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.

Fair

41°F

5°C

Humidity 71%
Wind Speed NW 3 mph
Barometer 30.14 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 21 May 9:35 am MDT
Extended Forecast for

5 Miles SSE Trail Ridge CO

  • Today

    Today: A 50 percent chance of snow showers, mainly after noon. Some thunder is also possible.  Partly sunny, with a high near 39. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.  Total daytime snow accumulation of less than a half inch possible.

    High: 39 °F

    Slight Chance
    Snow Showers
    then Chance
    Snow Showers

  • Tonight

    Tonight: Snow showers likely, mainly before midnight. Some thunder is also possible.  Mostly cloudy, with a low around 23. West wind 10 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 38. West wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow showers.  Mostly cloudy, with a low around 24. West southwest wind 5 to 10 mph, with gusts as high as 17 mph.  Little or no snow accumulation expected.

    Low: 24 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: A 30 percent chance of snow showers, mainly after noon. Some thunder is also possible.  Mostly sunny, with a high near 41. Breezy, with a west wind 11 to 15 mph, with gusts as high as 26 mph.

    High: 41 °F

    Chance Snow
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Breezy.

    Low: 27 °F

    Mostly Clear
    then Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 50. Breezy.

    High: 50 °F

    Sunny and
    Breezy then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 58.

    High: 58 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of snow showers, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. West southwest wind 11 to 13 mph, with gusts as high as 23 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 23. West wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Mostly sunny, with a high near 38. West wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 24. West southwest wind 5 to 10 mph, with gusts as high as 17 mph. Little or no snow accumulation expected.
Saturday
A 30 percent chance of snow showers, mainly after noon. Some thunder is also possible. Mostly sunny, with a high near 41. Breezy, with a west wind 11 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 27. Breezy.
Sunday
Sunny, with a high near 50. Breezy.
Sunday Night
Mostly clear, with a low around 34.
Memorial Day
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58.
Monday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 36.
Tuesday
Showers and possibly a thunderstorm. Partly sunny, with a high near 55.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 33.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Trail Ridge CO
 40.37°N 105.72°W (Elev. 10899 ft)
12:46 am MDT May 21, 2026
10am MDT May 21, 2026-6pm MDT May 27, 2026
 
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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