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

24°F

-4°C

Humidity 80%
Wind Speed W 7 mph
Barometer 30.02 in
Dewpoint 18°F (-8°C)
Visibility 4.00 mi
Wind Chill16°F (-9°C)
Last update 5 Dec 10:35 am 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

  • Today

    Today: Snow likely, mainly before 4pm. Patchy blowing snow. Mostly cloudy and cold, with a high near 9. Wind chill values as low as -15. Blustery, with a west northwest wind around 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 9 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow, mainly after 8pm. The snow could be heavy at times. Widespread blowing snow, mainly after 11pm. Temperature rising to around 15 by 5am. Wind chill values as low as -14. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.

    Low: 8 °F⇑

    Heavy Snow
    and Blowing
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow. Temperature falling to around 9 by 4pm. Wind chill values as low as -15. Very windy, with a west northwest wind 29 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 14 °F⇓

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Snow likely. Widespread blowing snow, mainly before 5am. Mostly cloudy, with a low around 3. Wind chill values as low as -18. Windy, with a west wind 24 to 29 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 3 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow before 11am. Areas of blowing snow. Partly sunny and cold, with a high near 8. Windy, with a west wind 23 to 28 mph, with gusts as high as 46 mph.

    High: 8 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 4. Windy.

    Low: 4 °F

    Slight Chance
    Snow and
    Windy

  • Monday

    Monday: A 40 percent chance of snow. Partly sunny, with a high near 13. Windy.

    High: 13 °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 slight chance of snow after 11am. Partly sunny, with a high near 21. Very windy.

    High: 21 °F

    Slight Chance
    Snow and Very
    Windy

Detailed Forecast

Today
Snow likely, mainly before 4pm. Patchy blowing snow. Mostly cloudy and cold, with a high near 9. Wind chill values as low as -15. Blustery, with a west northwest wind around 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly after 8pm. The snow could be heavy at times. Widespread blowing snow, mainly after 11pm. Temperature rising to around 15 by 5am. Wind chill values as low as -14. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow. Temperature falling to around 9 by 4pm. Wind chill values as low as -15. Very windy, with a west northwest wind 29 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Saturday Night
Snow likely. Widespread blowing snow, mainly before 5am. Mostly cloudy, with a low around 3. Wind chill values as low as -18. Windy, with a west wind 24 to 29 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday
A 40 percent chance of snow before 11am. Areas of blowing snow. Partly sunny and cold, with a high near 8. Windy, with a west wind 23 to 28 mph, with gusts as high as 46 mph.
Sunday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 4. Windy.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 13. Windy.
Monday Night
Mostly cloudy, with a low around 9. Windy.
Tuesday
A slight chance of snow after 11am. Partly sunny, with a high near 21. Very windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 12. Very windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 21. Windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 17. Windy.
Thursday
A chance of snow. Mostly cloudy, with a high near 19. Windy.
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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:
3:26 am MST Dec 5, 2025
Forecast Valid:
10am MST Dec 5, 2025-6pm MST Dec 11, 2025
 
Forecast Discussion
 
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