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

35°F

2°C

Humidity 56%
Wind Speed W 8 G 21 mph
Barometer 30.29 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 8 Dec 2:15 pm MST
Extended Forecast for

Saint Marys Glacier CO

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

  • This Afternoon

    This Afternoon: A 20 percent chance of snow. Widespread blowing snow. Mostly sunny, with a high near 21. Wind chill values as low as -4. Very windy, with a west northwest wind around 43 mph, with gusts as high as 60 mph.

    High: 21 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Tonight

    Tonight: A 20 percent chance of snow. Widespread blowing snow. Partly cloudy, with a low around 17. Wind chill values as low as -7. Strong and damaging winds, with a west northwest wind 46 to 55 mph, with gusts as high as 95 mph.

    Low: 17 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Tuesday

    Tuesday: A 30 percent chance of snow. Widespread blowing snow. Partly sunny, with a high near 32. Wind chill values as low as -2. Strong and damaging winds, with a west wind 50 to 55 mph, with gusts as high as 100 mph. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Chance Snow
    and Blowing
    Snow

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Widespread blowing snow, mainly before 1am. Mostly cloudy, with a low around 25. Strong and damaging winds, with a west wind 50 to 55 mph decreasing to 36 to 41 mph after midnight. Winds could gust as high as 90 mph. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Chance Snow
    and Blowing
    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly before 11am. Widespread blowing snow. Partly sunny, with a high near 30. Very windy, with a west wind 37 to 44 mph, with gusts as high as 65 mph.

    High: 30 °F

    Chance Snow
    and Blowing
    Snow

  • Wednesday Night

    Wednesday Night: Widespread blowing snow. Partly cloudy, with a low around 28. Strong and damaging winds.

    Low: 28 °F

    Blowing Snow
    and Damaging
    Winds

  • Thursday

    Thursday: Widespread blowing snow, mainly before 9am. Sunny, with a high near 31. Very windy.

    High: 31 °F

    Very Windy.
    Blowing Snow
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. Very windy.

    Low: 22 °F

    Mostly Clear
    and Very
    Windy

  • Friday

    Friday: Sunny, with a high near 30. Windy.

    High: 30 °F

    Sunny and
    Windy

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Widespread blowing snow. Mostly sunny, with a high near 21. Wind chill values as low as -4. Very windy, with a west northwest wind around 43 mph, with gusts as high as 60 mph.
Tonight
A 20 percent chance of snow. Widespread blowing snow. Partly cloudy, with a low around 17. Wind chill values as low as -7. Strong and damaging winds, with a west northwest wind 46 to 55 mph, with gusts as high as 95 mph.
Tuesday
A 30 percent chance of snow. Widespread blowing snow. Partly sunny, with a high near 32. Wind chill values as low as -2. Strong and damaging winds, with a west wind 50 to 55 mph, with gusts as high as 100 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
A 40 percent chance of snow. Widespread blowing snow, mainly before 1am. Mostly cloudy, with a low around 25. Strong and damaging winds, with a west wind 50 to 55 mph decreasing to 36 to 41 mph after midnight. Winds could gust as high as 90 mph. New snow accumulation of less than one inch possible.
Wednesday
A 30 percent chance of snow, mainly before 11am. Widespread blowing snow. Partly sunny, with a high near 30. Very windy, with a west wind 37 to 44 mph, with gusts as high as 65 mph.
Wednesday Night
Widespread blowing snow. Partly cloudy, with a low around 28. Strong and damaging winds.
Thursday
Widespread blowing snow, mainly before 9am. Sunny, with a high near 31. Very windy.
Thursday Night
Mostly clear, with a low around 22. Very windy.
Friday
Sunny, with a high near 30. Windy.
Friday Night
Partly cloudy, with a low around 23. Windy.
Saturday
Mostly sunny, with a high near 31. Windy.
Saturday Night
Partly cloudy, with a low around 22. Windy.
Sunday
Mostly sunny, with a high near 32. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
2:11 pm MST Dec 8, 2025
Forecast Valid:
2pm MST Dec 8, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation