National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Overcast

32°F

0°C

Humidity 96%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 3 Jan 4:15 am MST
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Mostly sunny, with a high near 33. Breezy, with a west wind 14 to 18 mph, with gusts as high as 30 mph.

    High: 33 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 23. Windy, with a west wind 15 to 20 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 55 mph.

    Low: 23 °F

    Partly Cloudy
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 31. Windy, with a west wind 23 to 33 mph, with gusts as high as 55 mph.

    High: 31 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. Windy, with a west wind 21 to 26 mph, with gusts as high as 45 mph.

    Low: 21 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: A 50 percent chance of snow showers. Partly sunny, with a high near 25. Windy, with a west wind 23 to 26 mph, with gusts as high as 44 mph.

    High: 25 °F

    Chance Snow
    Showers and
    Windy

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 17. Windy.

    Low: 17 °F

    Chance Snow
    and Windy

  • Tuesday

    Tuesday: A 30 percent chance of snow. Partly sunny, with a high near 23. Windy.

    High: 23 °F

    Chance Snow
    and Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 16. Windy.

    Low: 16 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: A slight chance of snow after 11am. Partly sunny, with a high near 22. Windy.

    High: 22 °F

    Slight Chance
    Snow and
    Windy

Detailed Forecast

Today
Mostly sunny, with a high near 33. Breezy, with a west wind 14 to 18 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 23. Windy, with a west wind 15 to 20 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 55 mph.
Sunday
Sunny, with a high near 31. Windy, with a west wind 23 to 33 mph, with gusts as high as 55 mph.
Sunday Night
Partly cloudy, with a low around 21. Windy, with a west wind 21 to 26 mph, with gusts as high as 45 mph.
Monday
A 50 percent chance of snow showers. Partly sunny, with a high near 25. Windy, with a west wind 23 to 26 mph, with gusts as high as 44 mph.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17. Windy.
Tuesday
A 30 percent chance of snow. Partly sunny, with a high near 23. Windy.
Tuesday Night
Partly cloudy, with a low around 16. Windy.
Wednesday
A slight chance of snow after 11am. Partly sunny, with a high near 22. Windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 10. Breezy.
Thursday
Snow likely. Mostly cloudy, with a high near 11. Breezy.
Thursday Night
Snow likely. Mostly cloudy, with a low around 1. Breezy.
Friday
Snow likely. Mostly cloudy and cold, with a high near 5. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.66°W (Elev. 10981 ft)
Last Update:
3:41 am MST Jan 3, 2026
Forecast Valid:
4am MST Jan 3, 2026-6pm MST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation