Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

20°F

-7°C

Humidity 39%
Wind Speed W 8 mph
Barometer 30.31 in
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 28 Dec 3:35 pm MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: A 20 percent chance of snow.  Widespread blowing snow. Mostly sunny and cold, with a high near 7. Wind chill values as low as -21. Windy, with a west northwest wind around 33 mph, with gusts as high as 47 mph.

    High: 7 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Tonight

    Tonight: Areas of blowing snow before 11pm. Mostly clear, with a low around -2. Wind chill values as low as -22. Blustery, with a west northwest wind 15 to 24 mph, with gusts as high as 40 mph.

    Low: -2 °F

    Blustery.
    Areas Blowing
    Snow then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 16. Wind chill values as low as -18. Blustery, with a west northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 16 °F

    Sunny and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 7. Wind chill values as low as -9. Breezy, with a west wind 16 to 18 mph, with gusts as high as 32 mph.

    Low: 7 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 22. Breezy, with a west wind 14 to 18 mph, with gusts as high as 31 mph.

    High: 22 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13. Breezy.

    Low: 13 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 26. Breezy.

    High: 26 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17. Breezy.

    Low: 17 °F

    Mostly Cloudy
    and Breezy

  • New Year's Day

    New Year's Day: A chance of snow after 11am.  Mostly cloudy, with a high near 25. Breezy.

    High: 25 °F

    Chance Snow
    and Breezy

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Widespread blowing snow. Mostly sunny and cold, with a high near 7. Wind chill values as low as -21. Windy, with a west northwest wind around 33 mph, with gusts as high as 47 mph.
Tonight
Areas of blowing snow before 11pm. Mostly clear, with a low around -2. Wind chill values as low as -22. Blustery, with a west northwest wind 15 to 24 mph, with gusts as high as 40 mph.
Monday
Sunny, with a high near 16. Wind chill values as low as -18. Blustery, with a west northwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 7. Wind chill values as low as -9. Breezy, with a west wind 16 to 18 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 22. Breezy, with a west wind 14 to 18 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly clear, with a low around 13. Breezy.
Wednesday
Mostly sunny, with a high near 26. Breezy.
Wednesday Night
Mostly cloudy, with a low around 17. Breezy.
New Year's Day
A chance of snow after 11am. Mostly cloudy, with a high near 25. Breezy.
Thursday Night
A chance of snow. Cloudy, with a low around 17. Breezy.
Friday
A chance of snow. Mostly cloudy, with a high near 21. Breezy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 14. Breezy.
Saturday
A chance of snow. Partly sunny, with a high near 21. Breezy.
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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)
2:26 pm MST Dec 28, 2025
3pm MST Dec 28, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database