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

28°F

-2°C

Humidity 92%
Wind Speed W 12 G 30 mph
Barometer 29.79 in
Dewpoint 26°F (-3°C)
Visibility 1.00 mi
Wind Chill18°F (-8°C)
Last update 6 Dec 2:55 am MST
Extended Forecast for

4 Miles W Saint Marys Glacier CO

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

    NOW until 11:00pm Sat

    Winter Storm Warning

  • Overnight

    Low: 15 °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. Windy, with a west northwest wind 32 to 34 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 15 °F⇓

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Snow. Widespread blowing snow, mainly after 4am. Low around 3. Wind chill values as low as -18. Windy, with a west northwest wind 24 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 3 °F

    Snow and
    Blowing Snow

  • Sunday

    Sunday: Snow likely, mainly before 11am. Widespread blowing snow, mainly before 7am. Partly sunny and cold, with a high near 6. Wind chill values as low as -19. Breezy, with a west wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 6 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 5. Breezy, with a west wind 20 to 23 mph, with gusts as high as 37 mph.

    Low: 5 °F

    Slight Chance
    Snow and
    Breezy

  • Monday

    Monday: A 50 percent chance of snow. Partly sunny, with a high near 11. Breezy.

    High: 11 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 8. Windy.

    Low: 8 °F

    Mostly Cloudy
    and Windy

  • Tuesday

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

    High: 22 °F

    Chance Snow
    and Windy

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Widespread blowing snow. Steady temperature around 15. Wind chill values as low as -8. Windy, with a west wind around 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Total nighttime 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. Windy, with a west northwest wind 32 to 34 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday Night
Snow. Widespread blowing snow, mainly after 4am. Low around 3. Wind chill values as low as -18. Windy, with a west northwest wind 24 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday
Snow likely, mainly before 11am. Widespread blowing snow, mainly before 7am. Partly sunny and cold, with a high near 6. Wind chill values as low as -19. Breezy, with a west wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. 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 5. Breezy, with a west wind 20 to 23 mph, with gusts as high as 37 mph.
Monday
A 50 percent chance of snow. Partly sunny, with a high near 11. Breezy.
Monday Night
Mostly cloudy, with a low around 8. Windy.
Tuesday
A chance of snow. Partly sunny, with a high near 22. Windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 16. Very windy.
Wednesday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 23. Windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 16. Windy.
Thursday
A chance of snow. Partly sunny, with a high near 21. Windy.
Thursday Night
Mostly cloudy, with a low around 15. Windy.
Friday
Mostly sunny, with a high near 19. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Saint Marys Glacier CO
 39.84°N 105.72°W (Elev. 12260 ft)
Last Update:
2:47 pm MST Dec 5, 2025
Forecast Valid:
3am MST Dec 6, 2025-6pm MST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation