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

23°F

-5°C

Humidity 85%
Wind Speed N 8 mph
Barometer 29.99 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 3 Dec 9:15 am MST
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • Today

    Today: Snow. Temperature falling to around -2 by 5pm. Wind chill values as low as -17. East southeast wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 2 to 4 inches possible.

    High: 6 °F⇓

    Snow

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around -1. Wind chill values as low as -19. Breezy, with a south wind 7 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.

    Low: -1 °F

    Chance Snow
    then Partly
    Cloudy and
    Breezy

  • Thursday

    Thursday: A 20 percent chance of snow after 11am. Patchy blowing snow before 4pm. Mostly sunny and cold, with a high near 7. Wind chill values as low as -22. Windy, with a west northwest wind 20 to 25 mph, with gusts as high as 38 mph.

    High: 7 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow after 11pm. Mostly cloudy, with a low around 2. Wind chill values as low as -22. Windy, with a west wind 22 to 26 mph, with gusts as high as 43 mph. New snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    and Windy

  • Friday

    Friday: Snow likely. Mostly cloudy and cold, with a high near 10. Breezy, with a west wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.

    High: 10 °F

    Snow Likely
    and Breezy

  • Friday Night

    Friday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 6. Windy. Chance of precipitation is 60%.

    Low: 6 °F

    Snow Likely
    and Windy

  • Saturday

    Saturday: Snow. High near 12. Windy. Chance of precipitation is 90%.

    High: 12 °F

    Snow and
    Windy

  • Saturday Night

    Saturday Night: Snow. Mostly cloudy, with a low around 8. Windy.

    Low: 8 °F

    Snow and
    Windy

  • Sunday

    Sunday: Snow likely, mainly before 11am. Partly sunny, with a high near 12. Windy.

    High: 12 °F

    Snow Likely
    and Windy

Detailed Forecast

Today
Snow. Temperature falling to around -2 by 5pm. Wind chill values as low as -17. East southeast wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
A 40 percent chance of snow, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around -1. Wind chill values as low as -19. Breezy, with a south wind 7 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.
Thursday
A 20 percent chance of snow after 11am. Patchy blowing snow before 4pm. Mostly sunny and cold, with a high near 7. Wind chill values as low as -22. Windy, with a west northwest wind 20 to 25 mph, with gusts as high as 38 mph.
Thursday Night
A 40 percent chance of snow after 11pm. Mostly cloudy, with a low around 2. Wind chill values as low as -22. Windy, with a west wind 22 to 26 mph, with gusts as high as 43 mph. New snow accumulation of less than a half inch possible.
Friday
Snow likely. Mostly cloudy and cold, with a high near 10. Breezy, with a west wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.
Friday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 6. Windy. Chance of precipitation is 60%.
Saturday
Snow. High near 12. Windy. Chance of precipitation is 90%.
Saturday Night
Snow. Mostly cloudy, with a low around 8. Windy.
Sunday
Snow likely, mainly before 11am. Partly sunny, with a high near 12. Windy.
Sunday Night
A slight chance of snow after 11pm. Mostly cloudy, with a low around 8. Breezy.
Monday
A chance of snow. Partly sunny, with a high near 15. Breezy.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 10. Breezy.
Tuesday
A slight chance of snow. Partly sunny, with a high near 19. Windy.
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Forecast Area
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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:
7:44 am MST Dec 3, 2025
Forecast Valid:
9am MST Dec 3, 2025-6pm MST Dec 9, 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