National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Boulder Municipal Airport (KBDU)

Lat: 40.04°NLon: 105.23°WElev: 5288ft.

Rain

41°F

5°C

Humidity 100%
Wind Speed N 14 mph
Barometer 30.02 in
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Wind Chill33°F (1°C)
Last update 18 May 6:15 pm MDT
Extended Forecast for

Allenspark CO

Winter Weather Advisory May 18, 06:37pm until May 18, 09:00pm
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory May 18, 06:37pm until May 18, 09:00pm

    NOW until 9:00pm Mon

    Winter Weather Advisory

  • Tonight

    Low: 25 °F

    Snow Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: Snow showers likely, mainly after 3pm. Some thunder is also possible. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 37. Calm wind becoming east southeast around 6 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 37 °F

    Snow Showers
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Snow showers, mainly before 9pm. Low around 30. Light and variable wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Snow Showers
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: A slight chance of snow showers before noon, then rain showers. Some thunder is also possible. High near 51. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 51 °F

    Slight Chance
    Snow Showers
    then Showers

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of rain showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 32. Light and variable wind. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers likely before 9pm, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.

    Low: 34 °F

    Rain/Snow
    Likely

  • Friday

    Friday: A slight chance of snow showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of rain showers after noon. Some thunder is also possible. Partly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain/Snow
    then Chance
    T-storms

Detailed Forecast

Tonight
Snow showers likely, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 25. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.
Tuesday
Snow showers likely, mainly after 3pm. Some thunder is also possible. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 37. Calm wind becoming east southeast around 6 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday Night
Snow showers, mainly before 9pm. Low around 30. Light and variable wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
A slight chance of snow showers before noon, then rain showers. Some thunder is also possible. High near 51. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of rain showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 32. Light and variable wind. Chance of precipitation is 20%.
Thursday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 70%.
Thursday Night
Rain showers likely before 9pm, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.
Friday
A slight chance of snow showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of rain showers after noon. Some thunder is also possible. Partly sunny, with a high near 58.
Friday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 32.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 40.
Memorial Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Allenspark CO
 40.18°N 105.52°W (Elev. 8527 ft)
Last Update:
12:46 pm MDT May 18, 2026
Forecast Valid:
6pm MDT May 18, 2026-6pm MDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation