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

32°F

0°C

Humidity 60%
Wind Speed SE 6 mph
Barometer 30.18 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 15 May 4:55 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Sunny, with a high near 56. Breezy, with a west wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 56 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Breezy, with a west northwest wind 9 to 16 mph, with gusts as high as 28 mph.

    Low: 37 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: A chance of rain and snow showers after noon. Some thunder is also possible. Increasing clouds, with a high near 54. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 54 °F

    Breezy.
    Mostly Sunny
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before 9pm, then a chance of rain showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 34. Breezy, with a west wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Breezy.
    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Snow showers, mainly after noon. Some thunder is also possible. High near 49. Breezy, with a west southwest wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.

    High: 49 °F

    Breezy.
    Chance Snow
    Showers then
    Snow Showers

  • Sunday Night

    Sunday Night: Snow showers. Some thunder is also possible. Low around 27. Chance of precipitation is 80%.

    Low: 27 °F

    Snow Showers

  • Monday

    Monday: Snow showers. Some thunder is also possible. High near 33. Breezy. Chance of precipitation is 90%.

    High: 33 °F

    Snow Showers
    and Breezy

  • Monday Night

    Monday Night: A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday

    Tuesday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 33.

    High: 33 °F

    Snow Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 56. Breezy, with a west wind 11 to 16 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 37. Breezy, with a west northwest wind 9 to 16 mph, with gusts as high as 28 mph.
Saturday
A chance of rain and snow showers after noon. Some thunder is also possible. Increasing clouds, with a high near 54. Breezy, with a southwest wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
A chance of rain and snow showers before 9pm, then a chance of rain showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 34. Breezy, with a west wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow showers, mainly after noon. Some thunder is also possible. High near 49. Breezy, with a west southwest wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.
Sunday Night
Snow showers. Some thunder is also possible. Low around 27. Chance of precipitation is 80%.
Monday
Snow showers. Some thunder is also possible. High near 33. Breezy. Chance of precipitation is 90%.
Monday Night
A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Breezy.
Tuesday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 33.
Tuesday Night
A chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 21.
Wednesday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 40. Breezy.
Wednesday Night
A slight chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 25. Breezy.
Thursday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 48. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
12:46 am MDT May 15, 2026
Forecast Valid:
5am MDT May 15, 2026-6pm MDT May 21, 2026
 
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Additional Resources

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Chance of Precipitation