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

27°F

-3°C

Humidity 66%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 14 Nov 8:15 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Today

    Today: Snow showers likely, mainly after 5pm. Mostly cloudy, with a high near 26. Southeast wind around 8 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 26 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers likely, mainly before 2am. Mostly cloudy, with a steady temperature around 24. West northwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Sunday

    Sunday: Sunny, with a high near 29. Northwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 29 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. Breezy, with a west wind 11 to 16 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 37. West wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers after 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: A chance of snow showers. Partly sunny, with a high near 24. Breezy.

    High: 24 °F

    Chance Snow
    Showers and
    Breezy

Detailed Forecast

Today
Snow showers likely, mainly after 5pm. Mostly cloudy, with a high near 26. Southeast wind around 8 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow showers likely, mainly before 2am. Mostly cloudy, with a steady temperature around 24. West northwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday
Sunny, with a high near 29. Northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 24. Breezy, with a west wind 11 to 16 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 37. West wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A chance of snow showers after 11pm. Mostly cloudy, with a low around 20.
Wednesday
A chance of snow showers. Partly sunny, with a high near 24. Breezy.
Wednesday Night
A slight chance of snow showers before 11pm. Partly cloudy, with a low around 15. Breezy.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 16.
Friday
Snow showers likely. Partly sunny, with a high near 22. Breezy.
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Forecast Area
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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:
4:13 am MST Nov 14, 2026
Forecast Valid:
8am MST Nov 14, 2026-6pm MST Nov 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

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