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

22°F

-6°C

Humidity 86%
Wind Speed SW 6 mph
Barometer 30.13 in
Dewpoint 19°F (-7°C)
Visibility 5.00 mi
Wind Chill14°F (-10°C)
Last update 7 Dec 4:35 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: A 50 percent chance of snow. Areas of blowing snow. Mostly cloudy, with a steady temperature around 6. Wind chill values as low as -23. Very windy, with a west northwest wind around 45 mph, with gusts as high as 65 mph. Total nighttime snow accumulation of less than one inch possible.

    Low: 6 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Sunday

    Sunday: A 40 percent chance of snow before 11am. Widespread blowing snow, mainly before noon. Mostly sunny and cold, with a steady temperature around 6. Wind chill values as low as -22. Very windy, with a west northwest wind 31 to 36 mph decreasing to 25 to 30 mph in the afternoon. Winds could gust as high as 55 mph. New snow accumulation of less than a half inch possible.

    High: 6 °F

    Chance Snow
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a temperature rising to around 9 by 10pm. Wind chill values as low as -15. Windy, with a west wind 23 to 25 mph, with gusts as high as 45 mph.

    Low: 6 °F⇑

    Slight Chance
    Snow and
    Windy

  • Monday

    Monday: A 50 percent chance of snow, mainly before 11am. Partly sunny, with a high near 14. Wind chill values as low as -12. Windy, with a west wind 25 to 30 mph, with gusts as high as 47 mph. New snow accumulation of 1 to 3 inches possible.

    High: 14 °F

    Windy. Chance
    Snow then
    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Windy, with a west wind 29 to 31 mph, with gusts as high as 55 mph.

    Low: 10 °F

    Mostly Cloudy
    and Windy

  • Tuesday

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

    High: 22 °F

    Chance Snow
    and Very
    Windy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 19. Windy.

    Low: 19 °F

    Chance Snow
    and Windy

  • Wednesday

    Wednesday: Snow likely. Mostly cloudy, with a high near 24. Very windy.

    High: 24 °F

    Snow Likely
    and Very
    Windy

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 18. Very windy.

    Low: 18 °F

    Chance Snow
    and Very
    Windy

Detailed Forecast

Overnight
A 50 percent chance of snow. Areas of blowing snow. Mostly cloudy, with a steady temperature around 6. Wind chill values as low as -23. Very windy, with a west northwest wind around 45 mph, with gusts as high as 65 mph. Total nighttime snow accumulation of less than one inch possible.
Sunday
A 40 percent chance of snow before 11am. Widespread blowing snow, mainly before noon. Mostly sunny and cold, with a steady temperature around 6. Wind chill values as low as -22. Very windy, with a west northwest wind 31 to 36 mph decreasing to 25 to 30 mph in the afternoon. Winds could gust as high as 55 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a temperature rising to around 9 by 10pm. Wind chill values as low as -15. Windy, with a west wind 23 to 25 mph, with gusts as high as 45 mph.
Monday
A 50 percent chance of snow, mainly before 11am. Partly sunny, with a high near 14. Wind chill values as low as -12. Windy, with a west wind 25 to 30 mph, with gusts as high as 47 mph. New snow accumulation of 1 to 3 inches possible.
Monday Night
Mostly cloudy, with a low around 10. Windy, with a west wind 29 to 31 mph, with gusts as high as 55 mph.
Tuesday
A 30 percent chance of snow, mainly after 11am. Partly sunny, with a high near 22. Very windy.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19. Windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 24. Very windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 18. Very windy.
Thursday
Snow likely. Mostly cloudy, with a high near 19. Windy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14. Windy.
Friday
A chance of snow. Partly sunny, with a high near 19. Breezy.
Friday Night
Mostly cloudy, with a low around 12. Breezy.
Saturday
Mostly sunny, with a high near 21. Breezy.
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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:
4:26 am MST Dec 7, 2025
Forecast Valid:
4am MST Dec 7, 2025-6pm MST Dec 13, 2025
 
Forecast Discussion
 
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