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

49°F

9°C

Humidity 23%
Wind Speed W 13 G 20 mph
Barometer 29.74 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 5 Mar 3:55 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Storm Warning March 6, 12:00am until March 7, 12:00am
Click here for hazard details and duration
Winter Storm Warning

  • This Afternoon

    This Afternoon: A 20 percent chance of snow. Partly sunny, with a steady temperature around 25. Breezy, with a west southwest wind around 15 mph, with gusts as high as 24 mph.

    High: 25 °F

    Slight Chance
    Snow and
    Breezy

  • Tonight

    Tonight: Snow, mainly after 11pm. The snow could be heavy at times. Low around 8. Wind chill values as low as -3. West southwest wind around 11 mph becoming southeast after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.

    Low: 8 °F

    Heavy Snow

  • Friday

    Friday: Snow. The snow could be heavy at times. Areas of blowing snow after 8am. Temperature falling to around 8 by 8am. Wind chill values as low as -10. Blustery, with a north northeast wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

    High: 10 °F⇓

    Heavy Snow
    and Areas
    Blowing Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 8pm. The snow could be heavy at times. Cloudy, then gradually becoming partly cloudy, with a low around -1. Wind chill values as low as -18. North wind 6 to 11 mph becoming light and variable. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: -1 °F

    Heavy Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 11am. Patchy blowing snow after 2pm. Mostly sunny, with a high near 15. Breezy, with a west wind 14 to 22 mph, with gusts as high as 36 mph.

    High: 15 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Patchy blowing snow. Mostly clear, with a low around 7. Breezy.

    Low: 7 °F

    Patchy
    Blowing Snow
    and Breezy

  • Sunday

    Sunday: Patchy blowing snow. Sunny, with a high near 24. Windy.

    High: 24 °F

    Patchy
    Blowing Snow
    and Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 14. Windy.

    Low: 14 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny, with a high near 29. Windy.

    High: 29 °F

    Sunny and
    Windy

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Partly sunny, with a steady temperature around 25. Breezy, with a west southwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Snow, mainly after 11pm. The snow could be heavy at times. Low around 8. Wind chill values as low as -3. West southwest wind around 11 mph becoming southeast after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.
Friday
Snow. The snow could be heavy at times. Areas of blowing snow after 8am. Temperature falling to around 8 by 8am. Wind chill values as low as -10. Blustery, with a north northeast wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Friday Night
Snow likely, mainly before 8pm. The snow could be heavy at times. Cloudy, then gradually becoming partly cloudy, with a low around -1. Wind chill values as low as -18. North wind 6 to 11 mph becoming light and variable. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 20 percent chance of snow before 11am. Patchy blowing snow after 2pm. Mostly sunny, with a high near 15. Breezy, with a west wind 14 to 22 mph, with gusts as high as 36 mph.
Saturday Night
Patchy blowing snow. Mostly clear, with a low around 7. Breezy.
Sunday
Patchy blowing snow. Sunny, with a high near 24. Windy.
Sunday Night
Mostly clear, with a low around 14. Windy.
Monday
Sunny, with a high near 29. Windy.
Monday Night
Mostly clear, with a low around 16. Windy.
Tuesday
A chance of snow. Partly sunny, with a high near 28. Windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 13. Windy.
Wednesday
A chance of snow. Mostly sunny, with a high near 23. Very windy.
Wednesday Night
Partly cloudy, with a low around 17. Windy.
Thursday
A slight chance of snow. Mostly sunny, with a high near 28. Very windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
11:49 am MST Mar 5, 2026
Forecast Valid:
4pm MST Mar 5, 2026-6pm MDT Mar 12, 2026
 
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