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

29°F

-2°C

Humidity 92%
Wind Speed W 13 mph
Barometer 29.85 in
Dewpoint 28°F (-2°C)
Visibility 0.50 mi
Wind Chill19°F (-7°C)
Last update 6 Dec 12:15 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Storm Warning December 6, 12:38pm until December 6, 11:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 6, 12:38pm until December 6, 11:00pm

    NOW until 11:00pm Sat

    Winter Storm Warning

  • This Afternoon

    High: 14 °F⇓

    Snow and
    Blowing Snow

  • Tonight

    Tonight: Snow. Widespread blowing snow. Low around 3. Wind chill values as low as -18. 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: A 50 percent chance of snow before 11am. Widespread blowing snow, mainly before 11am. Partly sunny and cold, with a high near 8. Wind chill values as low as -20. Windy, with a west wind 23 to 29 mph, with gusts as high as 45 mph. New snow accumulation of less than one inch possible.

    High: 8 °F

    Chance Snow
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 4. Wind chill values as low as -18. Windy, with a west wind 23 to 26 mph, with gusts as high as 45 mph.

    Low: 4 °F

    Slight Chance
    Snow and
    Windy

  • Monday

    Monday: A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 13. Windy, with a west wind 26 to 29 mph, with gusts as high as 45 mph.

    High: 13 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Windy.

    Low: 11 °F

    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after 11am. Mostly cloudy, with a high near 22. Very windy.

    High: 22 °F

    Chance Snow
    and Very
    Windy

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 19. Windy.

    Low: 19 °F

    Chance Snow
    and Windy

Detailed Forecast

This Afternoon
Snow. Widespread blowing snow. Temperature falling to around 8 by 5pm. Wind chill values as low as -16. Very windy, with a west northwest wind 39 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 5 to 9 inches possible.
Tonight
Snow. Widespread blowing snow. Low around 3. Wind chill values as low as -18. 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
A 50 percent chance of snow before 11am. Widespread blowing snow, mainly before 11am. Partly sunny and cold, with a high near 8. Wind chill values as low as -20. Windy, with a west wind 23 to 29 mph, with gusts as high as 45 mph. New snow accumulation of less than one inch possible.
Sunday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 4. Wind chill values as low as -18. Windy, with a west wind 23 to 26 mph, with gusts as high as 45 mph.
Monday
A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 13. Windy, with a west wind 26 to 29 mph, with gusts as high as 45 mph.
Monday Night
Mostly cloudy, with a low around 11. Windy.
Tuesday
A 30 percent chance of snow, mainly after 11am. Mostly cloudy, with a high near 22. Very windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 19. Windy.
Wednesday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 25. Very windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 20. Windy.
Thursday
A chance of snow. Partly sunny, with a high near 22. Windy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 16. Windy.
Friday
A slight chance of snow. Partly sunny, with a high near 22. 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:
4:12 am MST Dec 6, 2025
Forecast Valid:
12pm MST Dec 6, 2025-6pm MST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation