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

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Light Snow

26°F

-3°C

Humidity 82%
Wind Speed SW 7 mph
Barometer 29.99 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 5 Dec 5:15 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Storm Warning December 5, 11:00pm until December 6, 11:00pm
Click here for hazard details and duration
Winter Storm Warning

  • This Afternoon

    This Afternoon: A 40 percent chance of snow. Widespread blowing snow. Mostly cloudy, with a high near 11. Wind chill values as low as -12. Windy, with a west northwest wind around 26 mph, with gusts as high as 40 mph. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 11 °F

    Chance Snow
    and Blowing
    Snow

  • Tonight

    Tonight: Snow, mainly after 9pm. The snow could be heavy at times. Widespread blowing snow, mainly after 9pm. Temperature rising to around 15 by 5am. Wind chill values as low as -14. Windy, with a west wind 30 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 10 °F⇑

    Heavy Snow
    and Blowing
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow. Temperature falling to around 8 by 4pm. Wind chill values as low as -16. Very windy, with a west northwest wind 34 to 39 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 14 °F⇓

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Snow. Widespread blowing snow. Low around 3. Wind chill values as low as -20. Windy, with a west northwest wind 28 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 3 °F

    Snow and
    Blowing Snow

  • Sunday

    Sunday: Snow likely, mainly before 11am. Widespread blowing snow, mainly before 11am. Partly sunny and cold, with a high near 7. Windy, with a west wind 23 to 29 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.

    High: 7 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 6. Windy.

    Low: 6 °F

    Slight Chance
    Snow and
    Windy

  • Monday

    Monday: A 50 percent chance of snow. Partly sunny, with a high near 12. Windy.

    High: 12 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Windy.

    Low: 9 °F

    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: A chance of snow. Partly sunny, with a high near 22. Very windy.

    High: 22 °F

    Chance Snow
    and Very
    Windy

Detailed Forecast

This Afternoon
A 40 percent chance of snow. Widespread blowing snow. Mostly cloudy, with a high near 11. Wind chill values as low as -12. Windy, with a west northwest wind around 26 mph, with gusts as high as 40 mph. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly after 9pm. The snow could be heavy at times. Widespread blowing snow, mainly after 9pm. Temperature rising to around 15 by 5am. Wind chill values as low as -14. Windy, with a west wind 30 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow. Temperature falling to around 8 by 4pm. Wind chill values as low as -16. Very windy, with a west northwest wind 34 to 39 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Saturday Night
Snow. Widespread blowing snow. Low around 3. Wind chill values as low as -20. Windy, with a west northwest wind 28 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow likely, mainly before 11am. Widespread blowing snow, mainly before 11am. Partly sunny and cold, with a high near 7. Windy, with a west wind 23 to 29 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 6. Windy.
Monday
A 50 percent chance of snow. Partly sunny, with a high near 12. Windy.
Monday Night
Mostly cloudy, with a low around 9. Windy.
Tuesday
A chance of snow. Partly sunny, with a high near 22. Very windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 16. Very windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 22. Very windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 18. Very windy.
Thursday
A chance of snow. Partly sunny, with a high near 22. Windy.
Thursday Night
Mostly cloudy, with a low around 15. Windy.
Friday
Mostly sunny, with a high near 21. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
2:47 pm MST Dec 5, 2025
Forecast Valid:
5pm MST Dec 5, 2025-6pm MST Dec 12, 2025
 
Forecast Discussion
 
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