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.

Partly Cloudy

21°F

-6°C

Humidity 64%
Wind Speed S 3 mph
Barometer 30.07 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 5 Dec 1:15 am MST
Extended Forecast for

3 Miles WNW 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

  • Overnight

    Overnight: A 40 percent chance of snow. Patchy blowing snow. Mostly cloudy, with a low around 3. Wind chill values as low as -19. Windy, with a west wind 23 to 25 mph, with gusts as high as 43 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 3 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow likely. Patchy blowing snow. Mostly cloudy, with a high near 11. Wind chill values as low as -15. Breezy, with a west wind around 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 11 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow, mainly after 11pm. 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 -11. Windy, with a west wind 23 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.

    Low: 9 °F⇑

    Heavy Snow
    and Blowing
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow. High near 14. Wind chill values as low as -13. Windy, with a west wind 29 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 14 °F

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Snow. Widespread blowing snow, mainly before 5am. Low around 4. Windy, with a west wind 25 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 80%.

    Low: 4 °F

    Snow and
    Blowing Snow

  • Sunday

    Sunday: A 50 percent chance of snow, mainly before 11am. Patchy blowing snow. Partly sunny and cold, with a high near 9. Breezy.

    High: 9 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Sunday Night

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

    Low: 6 °F

    Slight Chance
    Snow Showers
    and Windy

  • Monday

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

    High: 13 °F

    Chance Snow
    Showers and
    Windy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Windy.

    Low: 10 °F

    Mostly Cloudy
    and Windy

Detailed Forecast

Overnight
A 40 percent chance of snow. Patchy blowing snow. Mostly cloudy, with a low around 3. Wind chill values as low as -19. Windy, with a west wind 23 to 25 mph, with gusts as high as 43 mph. Total nighttime snow accumulation of less than a half inch possible.
Friday
Snow likely. Patchy blowing snow. Mostly cloudy, with a high near 11. Wind chill values as low as -15. Breezy, with a west wind around 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow, mainly after 11pm. 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 -11. Windy, with a west wind 23 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow. High near 14. Wind chill values as low as -13. Windy, with a west wind 29 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow. Widespread blowing snow, mainly before 5am. Low around 4. Windy, with a west wind 25 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 80%.
Sunday
A 50 percent chance of snow, mainly before 11am. Patchy blowing snow. Partly sunny and cold, with a high near 9. Breezy.
Sunday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 6. Windy.
Monday
A chance of snow showers. Partly sunny, with a high near 13. Windy.
Monday Night
Mostly cloudy, with a low around 10. Windy.
Tuesday
A chance of snow showers, mainly after 11am. Partly sunny, with a high near 22. Windy.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Very windy.
Wednesday
Snow showers likely. Mostly cloudy, with a high near 22. Windy.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 17. Windy.
Thursday
A chance of snow showers. Partly sunny, with a high near 21. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Saint Marys Glacier CO
 39.86°N 105.69°W (Elev. 11962 ft)
Last Update:
2:21 pm MST Dec 4, 2025
Forecast Valid:
1am MST Dec 5, 2025-6pm MST Dec 11, 2025
 
Forecast Discussion
 
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