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

30°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 22 Nov 2:35 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Partly cloudy, with a low around 16. West northwest wind around 13 mph, with gusts as high as 21 mph.

    Low: 16 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 28. West northwest wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 28 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 17. West wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 17 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 27. West wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 20 mph. New snow accumulation of around an inch possible.

    High: 27 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 13. Breezy, with a west wind 13 to 21 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.

    Low: 13 °F

    Snow Showers
    Likely and
    Breezy

  • Monday

    Monday: A 20 percent chance of snow showers before 11am. Mostly sunny, with a high near 18. Windy.

    High: 18 °F

    Windy. Slight
    Chance Snow
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 3. Breezy.

    Low: 3 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of snow showers, mainly before 11am. Partly sunny, with a high near 11. Breezy.

    High: 11 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after 11pm. Partly cloudy, with a low around 3. Breezy.

    Low: 3 °F

    Slight Chance
    Snow Showers
    and Breezy

Detailed Forecast

Overnight
Partly cloudy, with a low around 16. West northwest wind around 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 28. West northwest wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Increasing clouds, with a low around 17. West wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday
A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 27. West wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 20 mph. New snow accumulation of around an inch possible.
Sunday Night
Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 13. Breezy, with a west wind 13 to 21 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.
Monday
A 20 percent chance of snow showers before 11am. Mostly sunny, with a high near 18. Windy.
Monday Night
A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 3. Breezy.
Tuesday
A chance of snow showers, mainly before 11am. Partly sunny, with a high near 11. Breezy.
Tuesday Night
A slight chance of snow showers after 11pm. Partly cloudy, with a low around 3. Breezy.
Wednesday
A slight chance of snow showers before 11am. Partly sunny, with a high near 15. Breezy.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 13. Breezy.
Thanksgiving Day
A chance of snow showers. Partly sunny, with a high near 21. Breezy.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 15. Breezy.
Friday
A chance of snow showers. Partly sunny, with a high near 24. 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:
6:52 pm MST Nov 21, 2025
Forecast Valid:
2am MST Nov 22, 2025-6pm MST Nov 28, 2025
 
Forecast Discussion
 
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Additional Resources

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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