Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring critical fire weather to the southern High Plains Friday. A winter storm will track across the Great Lakes and Northeast U.S. Friday into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

4°F

-16°C

Humidity 83%
Wind Speed Calm
Barometer 29.72 in
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Last update 19 Feb 10:15 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 11pm.  Mostly cloudy, with a low around -6. Wind chill values as low as -26. Breezy, with a southwest wind 10 to 17 mph, with gusts as high as 24 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: -6 °F

    Chance Snow
    and Breezy

  • Friday

    Friday: Snow.  High near 7. Wind chill values as low as -19. Breezy, with a south southwest wind 9 to 14 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 7 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow, mainly before 11pm.  Low around -8. Wind chill values as low as -32. Blustery, with a west wind 16 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: -8 °F

    Blustery.
    Snow then
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 11am.  Sunny and cold, with a high near 8. Wind chill values as low as -33. Blustery, with a west northwest wind 17 to 23 mph, with gusts as high as 34 mph.

    High: 8 °F

    Blustery.
    Slight Chance
    Snow then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -2. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: -2 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 21. Breezy.

    High: 21 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 7. Breezy.

    Low: 7 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Partly sunny, with a high near 26. Breezy.

    High: 26 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 15. Breezy.

    Low: 15 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around -6. Wind chill values as low as -26. Breezy, with a southwest wind 10 to 17 mph, with gusts as high as 24 mph. Total nighttime snow accumulation of less than a half inch possible.
Friday
Snow. High near 7. Wind chill values as low as -19. Breezy, with a south southwest wind 9 to 14 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow, mainly before 11pm. Low around -8. Wind chill values as low as -32. Blustery, with a west wind 16 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday
A 20 percent chance of snow before 11am. Sunny and cold, with a high near 8. Wind chill values as low as -33. Blustery, with a west northwest wind 17 to 23 mph, with gusts as high as 34 mph.
Saturday Night
Mostly clear, with a low around -2. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 21. Breezy.
Sunday Night
Partly cloudy, with a low around 7. Breezy.
Monday
Partly sunny, with a high near 26. Breezy.
Monday Night
Mostly cloudy, with a low around 15. Breezy.
Tuesday
Partly sunny, with a high near 27. Windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 21. Windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 22. Windy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 14. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 21. Windy.
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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)
9:26 pm MST Feb 19, 2026
10pm MST Feb 19, 2026-6pm MST Feb 26, 2026
 
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Additional Resources

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