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.

Partly Cloudy

65°F

18°C

Humidity 30%
Wind Speed NW 8 mph
Barometer 30.04 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 12 Oct 2:15 pm MDT
Extended Forecast for

2 Miles SSW Saint Marys Glacier CO

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 49. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 49 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain and snow showers between midnight and 3am, then a chance of snow showers. Partly cloudy, with a low around 34. Southwest wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Mostly Clear
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 47. West southwest wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 47 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow showers likely, becoming all snow after 9pm. Some thunder is also possible. Mostly cloudy, with a low around 29. South wind 8 to 13 mph becoming east southeast after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 29 °F

    Rain/Snow
    Likely then
    Snow Showers
    Likely

  • Wednesday

    Wednesday: Snow showers. High near 33. Breezy, with an east wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    High: 33 °F

    Snow Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow showers. Low around 26. Chance of precipitation is 90%.

    Low: 26 °F

    Snow Showers

  • Thursday

    Thursday: Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.

    High: 32 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Snow Showers
    Likely

  • Friday

    Friday: A slight chance of snow showers before noon. Sunny, with a high near 33.

    High: 33 °F

    Slight Chance
    Snow Showers
    then Sunny

Detailed Forecast

Columbus Day
Mostly sunny, with a high near 49. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Tonight
A slight chance of rain and snow showers between midnight and 3am, then a chance of snow showers. Partly cloudy, with a low around 34. Southwest wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday
A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 47. West southwest wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday Night
Rain and snow showers likely, becoming all snow after 9pm. Some thunder is also possible. Mostly cloudy, with a low around 29. South wind 8 to 13 mph becoming east southeast after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
Snow showers. High near 33. Breezy, with an east wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Wednesday Night
Snow showers. Low around 26. Chance of precipitation is 90%.
Thursday
Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 22.
Friday
A slight chance of snow showers before noon. Sunny, with a high near 33.
Friday Night
Mostly clear, with a low around 25. Breezy.
Saturday
Sunny, with a high near 42. Breezy.
Saturday Night
Mostly clear, with a low around 30. Breezy.
Sunday
Sunny, with a high near 41. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Saint Marys Glacier CO
 39.82°N 105.66°W (Elev. 10981 ft)
Last Update:
12:46 pm MDT Oct 12, 2026
Forecast Valid:
2pm MDT Oct 12, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation