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.

Mostly Cloudy

42°F

6°C

Humidity 76%
Wind Speed E 5 mph
Barometer 30.20 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 20 May 7:55 pm MDT
Extended Forecast for

Brainard Lake CO

  • Tonight

    Tonight: A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 24. West southwest wind 5 to 8 mph.

    Low: 24 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Thursday

    Thursday: A 50 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 46. West southwest wind 7 to 10 mph, with gusts as high as 16 mph. Little or no snow accumulation expected.

    High: 46 °F

    Mostly Sunny
    then Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 26. West wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Snow Showers
    Likely

  • Friday

    Friday: A 30 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 45. West wind 8 to 14 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of snow showers before midnight. Partly cloudy, with a low around 28. Light southwest wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 22 mph.

    Low: 28 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 50. Breezy.

    High: 50 °F

    Breezy.
    Mostly Sunny
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Breezy.

    Low: 28 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 58. Breezy.

    High: 58 °F

    Sunny and
    Breezy then
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 24. West southwest wind 5 to 8 mph.
Thursday
A 50 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 46. West southwest wind 7 to 10 mph, with gusts as high as 16 mph. Little or no snow accumulation expected.
Thursday Night
Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 26. West wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
A 30 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 45. West wind 8 to 14 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow showers before midnight. Partly cloudy, with a low around 28. Light southwest wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 22 mph.
Saturday
A 30 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 50. Breezy.
Saturday Night
Mostly clear, with a low around 28. Breezy.
Sunday
Sunny, with a high near 58. Breezy.
Sunday Night
Partly cloudy, 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 slight chance of showers and thunderstorms. Partly cloudy, with a low around 37.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, 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. Partly sunny, with a high near 55.
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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 pm MDT May 20, 2026
Forecast Valid:
8pm MDT May 20, 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