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.

Mostly Cloudy

29°F

-2°C

Humidity 34%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Last update 22 Jan 8:15 pm MST
Extended Forecast for

Saint Marys Glacier CO

Winter Weather Advisory January 23, 11:00am until January 24, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 12. Wind chill values as low as -1. West wind around 10 mph, with gusts as high as 16 mph.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Snow likely, mainly after 1pm. Increasing clouds, with a high near 22. Wind chill values as low as -1. West wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 22 °F

    Chance Snow
    then Snow
    Likely

  • Friday Night

    Friday Night: Snow. Low around 4. Wind chill values as low as -6. West wind 6 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 4 °F

    Snow

  • Saturday

    Saturday: Snow. High near 8. Wind chill values as low as -9. West wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 8 °F

    Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around -6. West wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: -6 °F

    Chance Snow

  • Sunday

    Sunday: Snow likely, mainly after 11am. Partly sunny and cold, with a high near 6. Blustery. Chance of precipitation is 60%.

    High: 6 °F

    Snow Likely
    and Blustery

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 11pm. Mostly clear, with a low around 0. Windy.

    Low: 0 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 19. Windy.

    High: 19 °F

    Sunny and
    Windy

  • Monday Night

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

    Low: 8 °F

    Mostly Clear
    and Windy

Detailed Forecast

Tonight
Partly cloudy, with a low around 12. Wind chill values as low as -1. West wind around 10 mph, with gusts as high as 16 mph.
Friday
Snow likely, mainly after 1pm. Increasing clouds, with a high near 22. Wind chill values as low as -1. West wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Friday Night
Snow. Low around 4. Wind chill values as low as -6. West wind 6 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday
Snow. High near 8. Wind chill values as low as -9. West wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around -6. West wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday
Snow likely, mainly after 11am. Partly sunny and cold, with a high near 6. Blustery. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of snow before 11pm. Mostly clear, with a low around 0. Windy.
Monday
Sunny, with a high near 19. Windy.
Monday Night
Mostly clear, with a low around 8. Windy.
Tuesday
Mostly sunny, with a high near 21. Breezy.
Tuesday Night
Partly cloudy, with a low around 10. Breezy.
Wednesday
Mostly sunny, with a high near 24. Breezy.
Wednesday Night
Partly cloudy, with a low around 11. Breezy.
Thursday
A slight chance of snow. Partly sunny, with a high near 24. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
2:16 pm MST Jan 22, 2026
Forecast Valid:
8pm MST Jan 22, 2026-6pm MST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation