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.

Overcast

19°F

-7°C

Humidity 80%
Wind Speed SE 6 mph
Barometer 30.32 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 7 Dec 9:35 pm MST
Extended Forecast for

4 Miles W Saint Marys Glacier CO

High Wind Watch December 9, 12:00am until December 10, 12:00am
Click here for hazard details and duration
High Wind Watch

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -16. Windy, with a west northwest wind 26 to 28 mph, with gusts as high as 37 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 9 °F

    Chance Snow
    and Windy

  • Monday

    Monday: A 30 percent chance of snow before 11am. Partly sunny, with a high near 12. Wind chill values as low as -13. Windy, with a west northwest wind 25 to 28 mph, with gusts as high as 41 mph. New snow accumulation of around an inch possible.

    High: 12 °F

    Windy. Chance
    Snow then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 10. Wind chill values as low as -13. Very windy, with a west wind 28 to 33 mph increasing to 36 to 41 mph after midnight. Winds could gust as high as 60 mph.

    Low: 10 °F

    Partly Cloudy
    and Very
    Windy

  • Tuesday

    Tuesday: A 20 percent chance of snow after 11am. Partly sunny, with a high near 21. Wind chill values as low as -13. Very windy, with a west wind 37 to 41 mph, with gusts as high as 60 mph.

    High: 21 °F

    Slight Chance
    Snow and Very
    Windy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 19. Very windy, with a west wind 29 to 37 mph, with gusts as high as 55 mph.

    Low: 19 °F

    Chance Snow
    and Very
    Windy

  • Wednesday

    Wednesday: A 50 percent chance of snow. Mostly cloudy, with a high near 27. Very windy.

    High: 27 °F

    Chance Snow
    and Very
    Windy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 19. Very windy.

    Low: 19 °F

    Chance Snow
    and Very
    Windy

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 23. Very windy.

    High: 23 °F

    Chance Snow
    and Very
    Windy

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 17. Windy.

    Low: 17 °F

    Chance Snow
    and Windy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a steady temperature around 9. Wind chill values as low as -16. Windy, with a west northwest wind 26 to 28 mph, with gusts as high as 37 mph. Total nighttime snow accumulation of less than a half inch possible.
Monday
A 30 percent chance of snow before 11am. Partly sunny, with a high near 12. Wind chill values as low as -13. Windy, with a west northwest wind 25 to 28 mph, with gusts as high as 41 mph. New snow accumulation of around an inch possible.
Monday Night
Partly cloudy, with a low around 10. Wind chill values as low as -13. Very windy, with a west wind 28 to 33 mph increasing to 36 to 41 mph after midnight. Winds could gust as high as 60 mph.
Tuesday
A 20 percent chance of snow after 11am. Partly sunny, with a high near 21. Wind chill values as low as -13. Very windy, with a west wind 37 to 41 mph, with gusts as high as 60 mph.
Tuesday Night
A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 19. Very windy, with a west wind 29 to 37 mph, with gusts as high as 55 mph.
Wednesday
A 50 percent chance of snow. Mostly cloudy, with a high near 27. Very windy.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19. Very windy.
Thursday
A chance of snow. Partly sunny, with a high near 23. Very windy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17. Windy.
Friday
A chance of snow, mainly before 11am. Partly sunny, with a high near 21. Breezy.
Friday Night
Partly cloudy, with a low around 13. Breezy.
Saturday
Mostly sunny, with a high near 21. Breezy.
Saturday Night
Mostly clear, with a low around 12. Breezy.
Sunday
Sunny, with a high near 22. 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:
1:27 pm MST Dec 7, 2025
Forecast Valid:
9pm MST Dec 7, 2025-6pm MST Dec 14, 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