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

44°F

7°C

Humidity 78%
Wind Speed NE 3 mph
Barometer 30.09 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 11 Oct 8:55 am MDT
Extended Forecast for

2 Miles SW Saint Marys Glacier CO

  • Today

    Today: A 20 percent chance of showers after noon. Partly sunny, with a high near 53. West southwest wind 8 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Breezy, with a west wind 7 to 12 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 44 mph.

    Low: 38 °F

    Partly Cloudy
    and Breezy

  • Columbus Day

    Columbus Day: Sunny, with a high near 51. Windy, with a west wind 21 to 26 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 47 mph.

    High: 51 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. West southwest wind 6 to 9 mph, with gusts as high as 17 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 47. Southwest wind 7 to 14 mph becoming east southeast in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%.

    High: 47 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow showers likely, becoming all snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.

    Low: 28 °F

    Rain/Snow
    Likely then
    Snow Showers
    Likely

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 31. Breezy. Chance of precipitation is 80%.

    High: 31 °F

    Snow Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Snow Showers
    Likely

  • Thursday

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

    High: 32 °F

    Chance Snow
    Showers

Detailed Forecast

Today
A 20 percent chance of showers after noon. Partly sunny, with a high near 53. West southwest wind 8 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 23 mph.
Tonight
Partly cloudy, with a low around 38. Breezy, with a west wind 7 to 12 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 44 mph.
Columbus Day
Sunny, with a high near 51. Windy, with a west wind 21 to 26 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 47 mph.
Monday Night
Partly cloudy, with a low around 35. West southwest wind 6 to 9 mph, with gusts as high as 17 mph.
Tuesday
A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 47. Southwest wind 7 to 14 mph becoming east southeast in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%.
Tuesday Night
Rain and snow showers likely, becoming all snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Wednesday
Snow showers. Some thunder is also possible. High near 31. Breezy. Chance of precipitation is 80%.
Wednesday Night
Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 27.
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 25.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 33.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 41.
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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 105.66°W (Elev. 10981 ft)
Last Update:
12:46 am MDT Oct 11, 2026
Forecast Valid:
9am MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation