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

50°F

10°C

Humidity 59%
Wind Speed Calm
Barometer 30.62 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 4 Oct 9:55 am MDT
Extended Forecast for

4 Miles W Saint Marys Glacier CO

  • Today

    Today: Sunny, with a high near 49. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. West northwest wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 49. Northwest wind 9 to 13 mph, with gusts as high as 25 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. West wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow showers after noon. Partly sunny, with a high near 48. West wind 6 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 20%.

    High: 48 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers after noon. Mostly sunny, with a high near 47. Chance of precipitation is 20%.

    High: 47 °F

    Sunny then
    Slight Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 49. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 36. West northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 49. Northwest wind 9 to 13 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 36. West wind 8 to 10 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of rain and snow showers after noon. Partly sunny, with a high near 48. West wind 6 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
A slight chance of rain and snow showers after noon. Mostly sunny, with a high near 47. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Sunny, with a high near 45.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Sunny, with a high near 44. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Saint Marys Glacier CO
 39.84°N 105.72°W (Elev. 12260 ft)
Last Update:
12:46 am MDT Oct 4, 2026
Forecast Valid:
10am MDT Oct 4, 2026-6pm MDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation