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

49°F

9°C

Humidity 35%
Wind Speed SE 8 mph
Barometer 30.40 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 8 Oct 8:55 pm MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • Tonight

    Tonight: Clear, with a low around 34. Breezy, with a west wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Clear then
    Clear and
    Breezy

  • Thursday

    Thursday: Increasing clouds, with a high near 46. West wind 6 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.

    High: 46 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 36. Southeast wind 7 to 9 mph becoming southwest after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow showers before 9am, then rain showers likely. Some thunder is also possible. Cloudy, with a high near 41. South southwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Chance
    Rain/Snow
    then Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers. Cloudy, with a low around 38. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 38 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.

    High: 42 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 30%.

    Low: 34 °F

    Chance
    Showers then
    Chance
    Rain/Snow and
    Breezy

  • Sunday

    Sunday: A chance of snow showers, mainly before noon. Some thunder is also possible. Mostly sunny, with a high near 37. Breezy.

    High: 37 °F

    Chance Snow
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 34. Breezy, with a west wind 11 to 15 mph, with gusts as high as 24 mph.
Thursday
Increasing clouds, with a high near 46. West wind 6 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 36. Southeast wind 7 to 9 mph becoming southwest after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 20%.
Friday
A chance of rain and snow showers before 9am, then rain showers likely. Some thunder is also possible. Cloudy, with a high near 41. South southwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 38. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Saturday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 30%.
Sunday
A chance of snow showers, mainly before noon. Some thunder is also possible. Mostly sunny, with a high near 37. Breezy.
Sunday Night
Partly cloudy, with a low around 26.
Columbus Day
A slight chance of snow showers after noon. Mostly sunny, with a high near 38.
Monday Night
A slight chance of snow showers. Partly cloudy, with a low around 29.
Tuesday
A chance of snow showers. Partly sunny, with a high near 41.
Tuesday Night
A slight chance of snow showers. Partly cloudy, with a low around 29.
Wednesday
A slight chance of snow showers. Mostly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
1:30 pm MDT Oct 8, 2025
Forecast Valid:
9pm MDT Oct 8, 2025-6pm MDT Oct 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation