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

62°F

17°C

Humidity 39%
Wind Speed W 12 G 16 mph
Barometer 29.96 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 11 Oct 6:55 pm MDT
Extended Forecast for

2 Miles SW Saint Marys Glacier CO

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. Windy, with a west southwest wind 10 to 15 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 44 mph.

    Low: 36 °F

    Slight Chance
    Showers and
    Windy

  • Columbus Day

    Columbus Day: Sunny, with a high near 50. Breezy, with a west southwest wind 19 to 24 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 43 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 33. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Partly sunny, with a high near 45. Breezy, with a west southwest wind 9 to 15 mph becoming east in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 45 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain showers likely before 9pm, then rain and snow showers between 9pm and 3am, then snow showers after 3am. Low around 29. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 29 °F

    Rain/Snow

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 32. Breezy. Chance of precipitation is 90%.

    High: 32 °F

    Snow Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before midnight. Some thunder is also possible. Low around 25. Chance of precipitation is 80%.

    Low: 25 °F

    Snow Showers
    then Chance
    Snow Showers

  • Thursday

    Thursday: A chance of snow showers. Partly sunny, with a high near 32.

    High: 32 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. Windy, with a west southwest wind 10 to 15 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 44 mph.
Columbus Day
Sunny, with a high near 50. Breezy, with a west southwest wind 19 to 24 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 43 mph.
Monday Night
Mostly clear, with a low around 33. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Tuesday
A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Partly sunny, with a high near 45. Breezy, with a west southwest wind 9 to 15 mph becoming east in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
Rain showers likely before 9pm, then rain and snow showers between 9pm and 3am, then snow showers after 3am. Low around 29. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Wednesday
Snow showers. Some thunder is also possible. High near 32. Breezy. Chance of precipitation is 90%.
Wednesday Night
Snow showers, mainly before midnight. Some thunder is also possible. Low around 25. Chance of precipitation is 80%.
Thursday
A chance of snow showers. Partly sunny, with a high near 32.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 23.
Friday
A slight chance of snow showers before noon. Sunny, with a high near 36.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 44. Breezy.
Saturday Night
Mostly clear, with a low around 30. Breezy.
Sunday
Sunny, with a high near 44. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Saint Marys Glacier CO
 39.82°N 105.69°W (Elev. 10909 ft)
Last Update:
12:46 pm MDT Oct 11, 2026
Forecast Valid:
7pm MDT Oct 11, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation