Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

75°F

24°C

Humidity 16%
Wind Speed SW 14 G 28 mph
Barometer 30.13 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Jun 11:35 am MDT
Extended Forecast for

3 Miles WSW Saint Marys Glacier CO

  • Today

    Today: Sunny, with a high near 69. Windy, with a west southwest wind around 26 mph, with gusts as high as 40 mph.

    High: 69 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 46. Windy, with a west wind 22 to 25 mph, with gusts as high as 38 mph.

    Low: 46 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny, with a high near 69. Windy, with a west wind 18 to 25 mph, with gusts as high as 43 mph.

    High: 69 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. Breezy, with a west southwest wind 18 to 23 mph, with gusts as high as 40 mph.

    Low: 44 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 62. Breezy, with a west southwest wind around 22 mph, with gusts as high as 38 mph.

    High: 62 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Breezy.

    Low: 38 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 55. Breezy.

    High: 55 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Chance
    T-storms and
    Breezy then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms likely after noon.  Partly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
Sunny, with a high near 69. Windy, with a west southwest wind around 26 mph, with gusts as high as 40 mph.
Tonight
Mostly clear, with a low around 46. Windy, with a west wind 22 to 25 mph, with gusts as high as 38 mph.
Saturday
Sunny, with a high near 69. Windy, with a west wind 18 to 25 mph, with gusts as high as 43 mph.
Saturday Night
Mostly clear, with a low around 44. Breezy, with a west southwest wind 18 to 23 mph, with gusts as high as 40 mph.
Sunday
Sunny, with a high near 62. Breezy, with a west southwest wind around 22 mph, with gusts as high as 38 mph.
Sunday Night
Mostly clear, with a low around 38. Breezy.
Monday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55. Breezy.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 41. Breezy.
Tuesday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 57.
Tuesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 42.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 55.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 39.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Saint Marys Glacier CO
 39.82°N 105.69°W (Elev. 10909 ft)
4:00 am MDT Jun 20, 2025
11am MDT Jun 20, 2025-6pm MDT Jun 26, 2025
 
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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