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

42°F

6°C

Humidity 75%
Wind Speed E 6 mph
Barometer 30.11 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Oct 8:15 am MDT
Extended Forecast for

3 Miles WSW Saint Marys Glacier CO

  • Columbus Day

    Columbus Day: Sunny, with a high near 50. Breezy, with a west southwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: 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 3pm, then a chance of rain and snow showers. Partly sunny, with a high near 49. West wind 8 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 49 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain likely, possibly mixed with snow showers before 9pm, then snow showers. Low around 27. East southeast wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Rain/Snow
    Likely then
    Snow Showers

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 37. Breezy, with an east southeast wind 8 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 37 °F

    Snow Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before midnight. Low around 24. Chance of precipitation is 80%.

    Low: 24 °F

    Snow Showers
    then Chance
    Snow Showers

  • Thursday

    Thursday: A 50 percent chance of snow showers. Partly sunny, with a high near 30.

    High: 30 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers before midnight. Partly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

Detailed Forecast

Columbus Day
Sunny, with a high near 50. Breezy, with a west southwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 41 mph.
Tonight
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 3pm, then a chance of rain and snow showers. Partly sunny, with a high near 49. West wind 8 to 14 mph becoming southeast 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 likely, possibly mixed with snow showers before 9pm, then snow showers. Low around 27. East southeast wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
Snow showers. Some thunder is also possible. High near 37. Breezy, with an east southeast wind 8 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
Snow showers, mainly before midnight. Low around 24. Chance of precipitation is 80%.
Thursday
A 50 percent chance of snow showers. Partly sunny, with a high near 30.
Thursday Night
A chance of snow showers before midnight. Partly cloudy, with a low around 19.
Friday
Sunny, with a high near 36.
Friday Night
Mostly clear, with a low around 24. Breezy.
Saturday
Sunny, with a high near 42. Breezy.
Saturday Night
Mostly clear, with a low around 28. Blustery.
Sunday
Sunny, with a high near 43. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Saint Marys Glacier CO
 39.82°N 105.69°W (Elev. 10909 ft)
Last Update:
12:46 am MDT Oct 12, 2026
Forecast Valid:
8am MDT Oct 12, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
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