Tue, 21 May: Low around 32, with Hazards – L: 32°, H: 41°

Boulder’s weather forecast for today, created at 5:16 AM on Tuesday, the 21st of May. Overnight, low around 32. Chance of precipitation is 90%. Total nighttime snow accumulation of around an inch possible. Then later, Tuesday, snow before 11am, then a chance of rain and snow between 11am and noon, then a chance of rain after noon. Some thunder is also possible. High near 41. Chance of precipitation is 90%. New snow accumulation of around an inch possible. Tuesday Night, a chance of rain and thunderstorms before midnight, then a slight chance of rain between midnight and 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 30%. Looking ahead, Wednesday, a 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 50. Sunrise today will be at 5:40 am and the sun will set at 8:14 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. Winter Storm Warning Mountains this afternoon through Tuesday evening. Winter Storm Warning northern Foothills tonight through Tuesday evening. Winter Weather Advisory southern Foothills tonight through Tuesday evening. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Light rain showers can be expected across the lower elevations and foothills into the early afternoon hours with scattered heavier showers and thunderstorms increasing in coverage by late afternoon. A few storms may bring brief heavy rainfall. Snow will also increase in coverage this afternoon in the mountains and high foothills and persist into the overnight period. Heavy snow will be possible above 8000 feet with 5 to 10 inches of snow possible. The snow level will gradually drop to around 5000 feet after midnight, with a few inches of wet snow possible, on grassy areas across the front range urban corridor. Over the Palmer Divide 2 to 6 inches of snow may occur above 6500 feet overnight. Days two through seven. Tuesday through Sunday. Widespread precipitation is expected on Tuesday into Tuesday night. Continued snowfall for the mountains and foothills with several inches of accumulation expected. Snow will become mixed in with rain at lower elevations with patchy fog early Tuesday. For Wednesday and Thursday there will be a chance of showers and afternoon thunderstorms both days. Temperatures will be cooler than normal through the week with highs mainly in the 40s and 50s. A warming trend will begin on Friday with highs reaching back into the 60s and into the 70s by the weekend with a slight chance of storms. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Mon, 20 May: A 50 percent chance of showers, with Hazards – L: 38°, H: 46°

Here is your local Boulder Colorado forecast, as of 5:15 AM on Monday, the 20th of May. Overnight, a 50 percent chance of showers. Cloudy, with a low around 38. Next, Monday, showers likely, then showers and possibly a thunderstorm after 1pm. High near 46. North northeast wind 7 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. Monday Night, showers and possibly a thunderstorm. Low around 36. North wind 8 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 90%. And then, Tuesday, showers before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 45. Breezy, with a northwest wind 8 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Sunrise today will be at 5:41 am and the sun will set at 8:14 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

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Stay tuned for weather updates since the weather’s always changing.

Sun, 19 May: Mostly cloudy, with Hazards – L: 35°, H: 55°

Here is your local Boulder Colorado forecast, as of 5:15 AM on Sunday, the 19th of May. Overnight, mostly cloudy, with a low around 35. Looking ahead, Sunday, a 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 55. Sunday Night, a chance of showers and thunderstorms. Mostly cloudy, with a low around 40. Chance of precipitation is 50%. Looking ahead, Monday, a chance of rain before 10am, then a chance of rain and thunderstorms between 10am and 1pm, then rain likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 47. Chance of precipitation is 60%. Sunrise today will be at 5:42 am and the sun will set at 8:13 pm.

There are 2 local weather hazards at the time of this report. Here are those local weather hazards.

Urgent – weather message. Frost advisory in effect from midnight tonight to 8 am Mountain Daylight Time sunday. The National Weather Service in Denver has issued a Frost Advisory, which is in effect from midnight tonight to 8 AM Mountain Daylight Time Sunday. Temperatures. Falling to 31 to 36 degrees. Timing. Late tonight and Sunday morning. Impacts. Frost could harm sensitive outdoor vegetation. Precautionary/preparedness actions. A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered.

Hazardous Weather Outlook. Winter Storm Watch Monday afternoon through Tuesday afternoon for the northern and central Mountains and northern Foothills. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. There will be a good chance of afternoon showers and thunderstorms over the higher terrain which will spread into the front range urban corridor by late afternoon. For tonight, showers and a few thunderstorms will continue especially across northern areas of the front range. Accumulating snow will occur in the northern mountains above 10000 feet with 2 to 6 inches possible. Days two through seven. Monday through Saturday. The next storm will bring a much cooler airmass and significant precipitation to the forecast area Monday through Tuesday night. Showers will become likely by late Monday for most of the forecast area with scattered afternoon thunderstorms on the plains. The storms may be strong over the Palmer Divide on Monday afternoon. Widespread precipitation is expected Monday night and Tuesday. There could be a significant snowfall in the mountains and foothills where 8 to 20 inches are possible. It could maybe get cold enough for some snow over the plains Monday night and Tuesday. Stay tuned for the latest forecasts. There will be a chance of showers over the mountains on Wednesday. Then all areas will be dry on Thursday and Friday. Late day showers and thunderstorms are possible on Saturday. Temperatures will be cold on Monday and Tuesday then warm up to near normal values by next weekend. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Sat, 18 May: A 40 percent chance of showers and thunderstorms, with Hazards – H: 62°, L: 38°

Today’s weather outlook for Boulder Colorado, created at 5:15 AM on Saturday, the 18th of May. Today, a 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 62. Winds could gust as high as 21 mph. Then, Tonight, a slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 11pm. Partly cloudy, with a low around 38. Winds could gust as high as 21 mph. Chance of precipitation is 20%. Sunday, a 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 57. And then, Sunday Night, a chance of showers and thunderstorms. Cloudy, with a low around 40. Chance of precipitation is 50%. Sunrise today will be at 5:43 am and the sun will set at 8:12 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Scattered showers and thunderstorms are expected to form over the mountains around midday then spread east onto the Front Range and eastern plains early this afternoon. The strongest storms may product small hail and gusty winds in the 40-50 mph range. Rain and snow chances across our area decrease significantly this evening. Days two through seven. Sunday through Friday. Sunday will have a chance of showers and storms mainly over the higher terrain. Sunday night into Monday will see an increasing chance of showers and a few storms with accumulating snow in the mountains above 10000 feet. Showers and a few storms will continue Monday night into Tuesday, with more snow in the mountains, as a storm system moves across the area. Some mountain areas may see several inches of snow. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Fri, 17 May: A 40 percent chance of showers and thunderstorms, with Hazards – H: 68°, L: 40°

Today’s Boulder Colorado weather outlook, as of 5:15 AM on Friday, the 17th of May. Today, a 40 percent chance of showers and thunderstorms, mainly after 11am. Mostly cloudy, with a high near 68. Breezy, with a west wind 8 to 13 mph becoming west northwest 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Then later, Tonight, a chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 40. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 30%. Saturday, a 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 61. Then, Saturday Night, a 20 percent chance of showers before midnight. Mostly cloudy, with a low around 38. Winds could gust as high as 17 mph. Sunrise today will be at 5:44 am and the sun will set at 8:11 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. This Afternoon and Tonight. Isolated high based showers and a few thunderstorms will develop this afternoon and track northeast. The main threats will be gusty winds to around 50 mph and cloud to ground lightning. Any rainfall will be light and short lived. The showers and storms will come to an end this evening. Days two through seven. Friday through Wednesday. A cooling trend will start on Friday with multiple upper level disturbances moving through the region. Showers and thunderstorms will develop on Friday over the mountains before noon and then move across the plains during the afternoon. A few severe storms may occur mainly near the Wyoming- Nebraska border area with large hail and strong winds possible Friday afternoon and evening. It will be cooler through the weekend with a chance of showers and thunderstorms. For Monday and Tuesday, it will remain cool and unsettled, with a good chance of showers as another weather system affects the area. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Thu, 16 May: Scattered showers and thunderstorms, with Hazards – H: 84°, L: 50°

Boulder’s forecast for today, created at 5:15 AM on Thursday, the 16th of May. Today, scattered showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 84. Chance of precipitation is 30%. Looking ahead, Tonight, scattered showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 50. Chance of precipitation is 30%. Friday, a 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 66. Then, Friday Night, a chance of showers and thunderstorms. Mostly cloudy, with a low around 41. West wind 6 to 14 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. Sunrise today will be at 5:45 am and the sun will set at 8:10 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Only isolated high based showers and a couple thunderstorms will develop this afternoon. The main threats will be gusty winds to around 45 mph, and thunderstorms producing cloud to ground lightning but little rainfall. Any showers and storms will come to an end by mid to late evening. Temperatures will be summerlike with highs climbing well into the 80s over most of the plains. Days two through seven. Thursday through Tuesday. Warm temperatures will continue through Thursday with isolated afternoon thunderstorms creating brief gusty winds over the mountains and foothills. Friday will see some cooling as an upper level weather disturbance moves over the state. Thunderstorms are expected over the mountains and northeast near the Wyoming border Friday afternoon and evening. The stronger storms will have the potential to create gusty winds, hail and brief heavy rain. Continued cooling is expected through the weekend as a series of weather disturbances aloft move over the state. Each afternoon will have a chance of showers and thunderstorms developing over the mountains and then spreading onto the plains. Monday and Tuesday are also expected to be cooler than normal with afternoon showers developing each day. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Wed, 15 May: A 10 percent chance of showers and thunderstorms after 2pm, with Hazards – H: 84°, L: 52°

Here is your local forecast for Boulder Colorado, created at 5:15 AM on Wednesday, the 15th of May. Today, a 10 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. And then, Tonight, a 10 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 52. Thursday, a 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 85. Then, Thursday Night, mostly cloudy, with a low around 49. Sunrise today will be at 5:45 am and the sun will set at 8:09 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Only isolated high based showers and a couple thunderstorms will develop this afternoon. The main threats will be gusty winds to around 45 mph, and thunderstorms producing cloud to ground lightning but little rainfall. Any showers and storms will come to an end by mid to late evening. Temperatures will be summerlike with highs climbing well into the 80s over most of the plains. Days two through seven. Thursday through Tuesday. Warm temperatures will continue through Thursday with isolated afternoon thunderstorms creating brief gusty winds over the mountains and foothills. Friday will see some cooling as an upper level weather disturbance moves over the state. Thunderstorms are expected over the mountains and near the Wyoming border Friday afternoon and evening. The stronger storms will have the potential to create gusty winds and small hail. Continued cooling is expected through the weekend as a series of weather disturbances aloft move over the state. Each afternoon will have a chance of showers and thunderstorms developing over the mountains and then spreading onto the plains. Monday and Tuesday are also expected to be cooler than normal with afternoon showers developing each day. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.

Tue, 14 May: A 10 percent chance of showers and thunderstorms after 2pm, with Hazards – H: 81°, L: 51°

Today’s weather conditions for Boulder Colorado, as of 5:15 AM on Tuesday, the 14th of May. Today, a 10 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Then, Tonight, a 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 51. Wednesday, mostly sunny, with a high near 82. Looking ahead, Wednesday Night, partly cloudy, with a low around 52. Sunrise today will be at 5:46 am and the sun will set at 8:08 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Isolated high based showers and thunderstorms will develop this afternoon and move southeast through early evening. The main threats will be gusty winds to around 45 mph, and thunderstorms producing cloud to ground lightning but little rainfall. Days two through seven. Wednesday through Monday. Warm temperatures will continue through Wednesday and Thursday with only isolated afternoon thunderstorm activity over the mountains and foothills. Friday will see slight cooling as an upper level weather disturbance begins moving over the state. Afternoon shower activity that develops over the mountains will have the chance to spread out onto the plains. Continued cooling is expected through the weekend as the weather disturbance aloft remains over the state. Each afternoon will have a chance of showers and thunderstorms developing over the mountains and then spreading onto the plains. Gusty winds, brief rain and small hail may accompany the thunderstorms, but no severe weather is expected at this time. Spotter information statement. Spotter activation will not be needed today or tonight.

See you tomorrow!

Mon, 13 May: A 10 percent chance of showers and thunderstorms after 4pm, with Hazards – H: 77°, L: 50°

Here is your local Boulder Colorado forecast, as of 5:15 AM on Monday, the 13th of May. Today, a 10 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 77. Next, Tonight, a 10 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 50. Tuesday, a 10 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. And then, Tuesday Night, a 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 49. Sunrise today will be at 5:47 am and the sun will set at 8:07 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. Isolated to scattered high based showers and thunderstorms will develop this afternoon and move southeast through early evening. The main threats will be gusty winds to around 40 mph, and thunderstorms producing cloud to ground lightning but little rainfall. Days two through seven. Tuesday through Sunday. No hazardous weather is expected at this time. Spotter information statement. Spotter activation will not be needed today or tonight.

See you tomorrow!

Sun, 12 May: Sunny, with Hazards – H: 71°, L: 47°

Today’s Boulder Colorado weather conditions, reported at 5:15 AM on Sunday, the 12th of May. Today, sunny, with a high near 71. Winds could gust as high as 16 mph. Then later, Tonight, partly cloudy, with a low around 47. Winds could gust as high as 17 mph. Monday, a 10 percent chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 76. Winds could gust as high as 16 mph. And then, Monday Night, a 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 48. Sunrise today will be at 5:48 am and the sun will set at 8:06 pm.

There is one local weather hazard at the time of this report. Here’s that local weather hazard.

Hazardous Weather Outlook. This hazardous weather outlook is for northeast and north central Colorado. Day one. Today and Tonight. We are still expecting isolated to scattered weak showers and even a thunderstorm or two across much of the forecast area this afternoon into early evening. The plains can expected north winds of 15 to 25 mph this afternoon. Precipitation should be done shortly after sunset if not sooner. Days two through seven. Sunday through Friday. No hazardous weather is expected at this time. Spotter information statement. Spotter activation will not be needed today or tonight.

Stay tuned for weather updates since the weather’s always changing.