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.

Fair

32°F

0°C

Humidity 57%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 28 Feb 1:55 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Mostly clear, with a low around 15. Wind chill values as low as -2. Breezy, with a west wind around 24 mph, with gusts as high as 40 mph.

    Low: 15 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Patchy blowing snow after 5pm. Sunny, with a high near 28. Wind chill values as low as -3. Windy, with a west wind 18 to 25 mph, with gusts as high as 43 mph.

    High: 28 °F

    Windy. Sunny
    then Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly after 11pm. Patchy blowing snow before 8pm. Mostly cloudy, with a low around 18. Breezy, with a west wind 15 to 18 mph, with gusts as high as 31 mph. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Sunday

    Sunday: Snow likely, mainly before 11am. Patchy blowing snow. Mostly cloudy, with a high near 31. Breezy, with a west wind 18 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 31 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 19. Breezy, with a west southwest wind 13 to 16 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Slight Chance
    Snow and
    Breezy

  • Monday

    Monday: A 30 percent chance of snow after 11am. Partly sunny, with a high near 30. Breezy.

    High: 30 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Snow likely. Mostly cloudy, with a low around 16. Breezy. Chance of precipitation is 70%.

    Low: 16 °F

    Snow Likely
    and Breezy

  • Tuesday

    Tuesday: Snow. Some thunder is also possible. Cloudy, with a high near 25. Blustery.

    High: 25 °F

    Snow and
    Blustery

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 11. Breezy.

    Low: 11 °F

    Snow Likely
    and Breezy

Detailed Forecast

Overnight
Mostly clear, with a low around 15. Wind chill values as low as -2. Breezy, with a west wind around 24 mph, with gusts as high as 40 mph.
Saturday
Patchy blowing snow after 5pm. Sunny, with a high near 28. Wind chill values as low as -3. Windy, with a west wind 18 to 25 mph, with gusts as high as 43 mph.
Saturday Night
A 40 percent chance of snow, mainly after 11pm. Patchy blowing snow before 8pm. Mostly cloudy, with a low around 18. Breezy, with a west wind 15 to 18 mph, with gusts as high as 31 mph. New snow accumulation of less than one inch possible.
Sunday
Snow likely, mainly before 11am. Patchy blowing snow. Mostly cloudy, with a high near 31. Breezy, with a west wind 18 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 19. Breezy, with a west southwest wind 13 to 16 mph, with gusts as high as 28 mph.
Monday
A 30 percent chance of snow after 11am. Partly sunny, with a high near 30. Breezy.
Monday Night
Snow likely. Mostly cloudy, with a low around 16. Breezy. Chance of precipitation is 70%.
Tuesday
Snow. Some thunder is also possible. Cloudy, with a high near 25. Blustery.
Tuesday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 11. Breezy.
Wednesday
A chance of snow. Mostly sunny, with a high near 25. Breezy.
Wednesday Night
A slight chance of snow. Partly cloudy, with a low around 13. Breezy.
Thursday
Snow likely. Mostly cloudy, with a high near 23. Breezy.
Thursday Night
Snow. Mostly cloudy, with a low around 10. Breezy.
Friday
Snow. Cloudy, with a high near 15. Breezy.
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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:
11:46 pm MST Feb 27, 2026
Forecast Valid:
2am MST Feb 28, 2026-6pm MST Mar 6, 2026
 
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