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

62°F

17°C

Humidity 42%
Wind Speed SE 13 mph
Barometer 30.31 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 29 Sep 4:55 pm MDT
Extended Forecast for

Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 33. West wind around 6 mph. Chance of precipitation is 80%.

    High: 33 °F

    Showers

  • Tonight

    Tonight: A 40 percent chance of showers before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 33 °F

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 43. Breezy, with a west wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 43 °F

    Sunny and
    Breezy then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 34. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

    Low: 34 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 45. Breezy, with a west northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 45 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35. Breezy.

    Low: 35 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 49. Breezy.

    High: 49 °F

    Sunny and
    Breezy then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Breezy.

    Low: 37 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Friday

    Friday: A chance of showers after noon. Mostly sunny, with a high near 48. Breezy.

    High: 48 °F

    Sunny and
    Breezy then
    Chance
    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 33. West wind around 6 mph. Chance of precipitation is 80%.
Tonight
A 40 percent chance of showers before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 43. Breezy, with a west wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 34. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
Sunny, with a high near 45. Breezy, with a west northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 35. Breezy.
Thursday
Sunny, with a high near 49. Breezy.
Thursday Night
Mostly clear, with a low around 37. Breezy.
Friday
A chance of showers after noon. Mostly sunny, with a high near 48. Breezy.
Friday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 33.
Saturday
A chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 40.
Saturday Night
A chance of snow showers. Partly cloudy, with a low around 30. Breezy.
Sunday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 38. Breezy.
Sunday Night
A slight chance of snow showers. Partly cloudy, with a low around 29.
Monday
A chance of snow showers. Partly sunny, with a high near 36. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.84°N 105.66°W (Elev. 11798 ft)
Last Update:
2:11 pm MDT Sep 29, 2025
Forecast Valid:
5pm MDT Sep 29, 2025-6pm MDT Oct 6, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation