National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Light Snow and Breezy

28°F

-2°C

Humidity 75%
Wind Speed W 21 G 28 mph
Barometer 29.60 in
Dewpoint 21°F (-6°C)
Visibility 2.50 mi
Wind Chill14°F (-10°C)
Last update 17 Feb 1:35 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Weather Advisory February 17, 01:43pm until February 18, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 17, 01:43pm until February 18, 11:00pm

    NOW until 11:00pm Wed

    Winter Weather Advisory

  • This Afternoon

    High: 9 °F

    Snow and
    Blowing Snow

  • Tonight

    Tonight: Snow. Widespread blowing snow, mainly before 11pm. Low around 6. Wind chill values as low as -16. Windy, with a west wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 6 °F

    Snow and
    Blowing Snow

  • Wednesday

    Wednesday: Snow. Widespread blowing snow, mainly between 11am and 2pm. High near 14. Wind chill values as low as -14. Windy, with a west southwest wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 14 °F

    Snow and
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Snow. Widespread blowing snow, mainly after 8pm. Low around -6. Wind chill values as low as -34. Very windy, with a west wind 32 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: -6 °F

    Snow and
    Blowing Snow
    then Snow
    Likely and
    Blowing Snow

  • Thursday

    Thursday: Snow likely, mainly after 11am. Widespread blowing snow. Mostly cloudy and cold, with a high near 1. Windy, with a west wind 22 to 29 mph, with gusts as high as 44 mph. Chance of precipitation is 70%.

    High: 1 °F

    Snow Likely
    and Blowing
    Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around -8. Breezy.

    Low: -8 °F

    Chance Snow
    and Breezy

  • Friday

    Friday: Snow. High near 6. Breezy. Chance of precipitation is 90%.

    High: 6 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow. Mostly cloudy, with a low around -8. Breezy.

    Low: -8 °F

    Snow and
    Breezy

Detailed Forecast

This Afternoon
Snow. Widespread blowing snow. Steady temperature around 9. Wind chill values as low as -17. Very windy, with a west wind 37 to 39 mph, with gusts as high as 65 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Snow. Widespread blowing snow, mainly before 11pm. Low around 6. Wind chill values as low as -16. Windy, with a west wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow. Widespread blowing snow, mainly between 11am and 2pm. High near 14. Wind chill values as low as -14. Windy, with a west southwest wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow. Widespread blowing snow, mainly after 8pm. Low around -6. Wind chill values as low as -34. Very windy, with a west wind 32 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow likely, mainly after 11am. Widespread blowing snow. Mostly cloudy and cold, with a high near 1. Windy, with a west wind 22 to 29 mph, with gusts as high as 44 mph. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around -8. Breezy.
Friday
Snow. High near 6. Breezy. Chance of precipitation is 90%.
Friday Night
Snow. Mostly cloudy, with a low around -8. Breezy.
Saturday
A chance of snow. Partly sunny and cold, with a high near 7. Breezy.
Saturday Night
Mostly clear, with a low around -4. Breezy.
Sunday
Mostly sunny, with a high near 19. Breezy.
Sunday Night
Partly cloudy, with a low around 7. Breezy.
Monday
Mostly sunny, with a high near 24. Blustery.
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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:
11:47 am MST Feb 17, 2026
Forecast Valid:
1pm MST Feb 17, 2026-6pm MST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation