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.

Fair

38°F

3°C

Humidity 48%
Wind Speed Calm
Barometer 30.40 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 7 Oct 11:15 pm MDT
Extended Forecast for

Saint Marys Glacier CO

  • Tonight

    Tonight: Mostly clear, with a low around 33. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 52. Breezy, with a west wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 52 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. Breezy, with a west wind 8 to 18 mph, with gusts as high as 28 mph.

    Low: 37 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 53. Breezy, with a west wind 13 to 18 mph becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 53 °F

    Sunny and
    Breezy then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. South wind 6 to 13 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.

    Low: 41 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.

    High: 48 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 49. Breezy.

    High: 49 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 37. Breezy.

    Low: 37 °F

    Breezy.
    Chance
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 33. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 52. Breezy, with a west wind 10 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 37. Breezy, with a west wind 8 to 18 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 53. Breezy, with a west wind 13 to 18 mph becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 26 mph.
Thursday Night
Mostly cloudy, with a low around 41. South wind 6 to 13 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.
Friday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41. Breezy.
Saturday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 49. Breezy.
Saturday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 37. Breezy.
Sunday
A chance of snow showers, mainly after noon. Partly sunny, with a high near 42. Breezy.
Sunday Night
Mostly clear, with a low around 30.
Columbus Day
A slight chance of snow showers. Mostly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 31. Breezy.
Tuesday
A slight chance of snow showers. Mostly sunny, with a high near 45. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
2:26 pm MDT Oct 7, 2025
Forecast Valid:
11pm MDT Oct 7, 2025-6pm MDT Oct 14, 2025
 
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Additional Resources

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Chance of Precipitation