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

9°F

-13°C

Humidity 84%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Last update 2 Dec 1:15 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Partly cloudy, with a low around 3. Wind chill values as low as -17. Windy, with a west wind 24 to 26 mph, with gusts as high as 40 mph.

    Low: 3 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: Snow likely, mainly after 4pm. Increasing clouds, with a high near 14. Wind chill values as low as -17. Windy, with a west wind 22 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 14 °F

    Chance Snow
    and Windy
    then Snow
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: Snow. Low around 3. Wind chill values as low as -7. Blustery, with a west wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 3 °F

    Snow and
    Blustery

  • Wednesday

    Wednesday: Snow. High near 5. Wind chill values as low as -14. Southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 5 °F

    Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around -5. Breezy, with a west wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: -5 °F

    Chance Snow
    then Partly
    Cloudy and
    Breezy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 7. Breezy.

    High: 7 °F

    Cold and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after 11pm. Partly cloudy, with a low around 2. Breezy.

    Low: 2 °F

    Slight Chance
    Snow and
    Breezy

  • Friday

    Friday: A chance of snow. Partly sunny, with a high near 12. Windy.

    High: 12 °F

    Chance Snow
    and Windy

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 10. Windy.

    Low: 10 °F

    Chance Snow
    and Windy

Detailed Forecast

Overnight
Partly cloudy, with a low around 3. Wind chill values as low as -17. Windy, with a west wind 24 to 26 mph, with gusts as high as 40 mph.
Tuesday
Snow likely, mainly after 4pm. Increasing clouds, with a high near 14. Wind chill values as low as -17. Windy, with a west wind 22 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow. Low around 3. Wind chill values as low as -7. Blustery, with a west wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow. High near 5. Wind chill values as low as -14. Southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around -5. Breezy, with a west wind 9 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny and cold, with a high near 7. Breezy.
Thursday Night
A 20 percent chance of snow after 11pm. Partly cloudy, with a low around 2. Breezy.
Friday
A chance of snow. Partly sunny, with a high near 12. Windy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 10. Windy.
Saturday
Snow likely. Mostly cloudy, with a high near 15. Windy.
Saturday Night
Snow likely. Mostly cloudy, with a low around 8. Windy.
Sunday
A chance of snow. Partly sunny, with a high near 14. Breezy.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 5. Breezy.
Monday
A chance of snow. Partly sunny, with a high near 13. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
2:16 pm MST Dec 1, 2025
Forecast Valid:
1am MST Dec 2, 2025-6pm MST Dec 8, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation