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.

Fair

25°F

-4°C

Humidity 63%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 14 Nov 12:55 am MST
Extended Forecast for

Saint Marys Glacier CO

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. West northwest wind 6 to 8 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after 2pm. Mostly cloudy, with a high near 35. South wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of snow, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 27. West northwest wind 5 to 10 mph, with gusts as high as 16 mph. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow

  • Sunday

    Sunday: Sunny, with a high near 38. West wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 46. Breezy.

    High: 46 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Breezy.

    High: 44 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after 11pm. Partly cloudy, with a low around 29.

    Low: 29 °F

    Slight Chance
    Snow Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. West northwest wind 6 to 8 mph.
Saturday
Snow likely, mainly after 2pm. Mostly cloudy, with a high near 35. South wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
A 50 percent chance of snow, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 27. West northwest wind 5 to 10 mph, with gusts as high as 16 mph. New snow accumulation of less than a half inch possible.
Sunday
Sunny, with a high near 38. West wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 46. Breezy.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 44. Breezy.
Tuesday Night
A slight chance of snow showers after 11pm. Partly cloudy, with a low around 29.
Wednesday
A chance of snow showers, mainly after 11am. Partly sunny, with a high near 33. Breezy.
Wednesday Night
A slight chance of snow showers. Partly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 24.
Friday
Snow showers likely. Partly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
11:46 pm MST Nov 13, 2026
Forecast Valid:
1am MST Nov 14, 2026-6pm MST Nov 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation