National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Partly Cloudy

57°F

14°C

Humidity 38%
Wind Speed N 5 mph
Barometer 30.20 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 3 Oct 8:35 pm MDT
Extended Forecast for

4 Miles W Saint Marys Glacier CO

  • Tonight

    Tonight: A slight chance of rain showers before 9pm, then a slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 36. West southwest wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow showers before 2pm, then snow showers likely. Some thunder is also possible. Partly sunny, with a high near 41. Breezy, with a southwest wind 11 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 26. Breezy, with a west wind 15 to 23 mph, with gusts as high as 38 mph.

    Low: 26 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Sunday

    Sunday: A 20 percent chance of snow showers after noon. Increasing clouds, with a high near 37. West wind 9 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 25. Southeast wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Chance Snow
    Showers

  • Monday

    Monday: A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers, mainly after noon. Mostly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after midnight. Partly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Tonight
A slight chance of rain showers before 9pm, then a slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 36. West southwest wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday
A chance of rain and snow showers before 2pm, then snow showers likely. Some thunder is also possible. Partly sunny, with a high near 41. Breezy, with a southwest wind 11 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 26. Breezy, with a west wind 15 to 23 mph, with gusts as high as 38 mph.
Sunday
A 20 percent chance of snow showers after noon. Increasing clouds, with a high near 37. West wind 9 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 25. Southeast wind 7 to 13 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
A chance of snow showers, mainly after noon. Mostly sunny, with a high near 40.
Tuesday Night
A slight chance of snow showers after midnight. Partly cloudy, with a low around 30.
Wednesday
A slight chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 40.
Wednesday Night
Mostly clear, with a low around 30.
Thursday
Sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 30.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 40.
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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:
2:21 pm MDT Oct 3, 2025
Forecast Valid:
8pm MDT Oct 3, 2025-6pm MDT Oct 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation