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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Partly Cloudy

29°F

-2°C

Humidity 93%
Wind Speed E 3 mph
Barometer 30.17 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 21 May 5:35 am MDT
Extended Forecast for

Brainard Lake CO

  • Today

    Today: A 40 percent chance of snow showers, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 47. West southwest wind 7 to 13 mph, with gusts as high as 22 mph. Little or no snow accumulation expected.

    High: 47 °F

    Chance Snow
    Showers

  • Tonight

    Tonight: Snow showers likely, mainly between 9pm and midnight. Some thunder is also possible. Mostly cloudy, with a low around 26. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Snow Showers
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 46. West wind 7 to 13 mph becoming south in the afternoon. Winds could gust as high as 26 mph.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Little or no snow accumulation expected.

    Low: 28 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: A 40 percent chance of snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 50. Breezy, with a west wind 13 to 16 mph, with gusts as high as 29 mph.

    High: 50 °F

    Breezy.
    Mostly Sunny
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Breezy.

    Low: 31 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 59. Breezy.

    High: 59 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 35.

    Low: 35 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61.

    High: 61 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of snow showers, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 47. West southwest wind 7 to 13 mph, with gusts as high as 22 mph. Little or no snow accumulation expected.
Tonight
Snow showers likely, mainly between 9pm and midnight. Some thunder is also possible. Mostly cloudy, with a low around 26. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 46. West wind 7 to 13 mph becoming south in the afternoon. Winds could gust as high as 26 mph.
Friday Night
A 40 percent chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Little or no snow accumulation expected.
Saturday
A 40 percent chance of snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 50. Breezy, with a west wind 13 to 16 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 31. Breezy.
Sunday
Sunny, with a high near 59. Breezy.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 35.
Memorial Day
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61.
Monday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 37.
Tuesday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 58.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 35.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brainard Lake CO
 40.07°N 105.57°W (Elev. 10561 ft)
Last Update:
12:46 am MDT May 21, 2026
Forecast Valid:
5am MDT May 21, 2026-6pm MDT May 27, 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