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.

Partly Cloudy

-3°F

-19°C

Humidity 80%
Wind Speed NE 3 mph
Barometer 29.86 in
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Last update 25 Jan 1:15 am MST
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Mostly cloudy, with a low around -13. Wind chill values as low as -37. Blustery, with a west northwest wind around 18 mph, with gusts as high as 26 mph.

    Low: -13 °F

    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Snow, mainly after 11am. Widespread blowing snow, mainly after noon. High near -4. Wind chill values as low as -38. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: -4 °F

    Snow and
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow likely before 11pm. Widespread blowing snow, mainly after 5am. Mostly cloudy, then gradually becoming mostly clear, with a low around -14. Wind chill values as low as -41. Windy, with a west northwest wind 22 to 26 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: -14 °F

    Snow Likely
    and Blowing
    Snow then
    Blowing Snow
    and Windy

  • Monday

    Monday: Sunny and cold, with a high near 6. Wind chill values as low as -39. Windy, with a west wind 28 to 33 mph, with gusts as high as 50 mph.

    High: 6 °F

    Cold and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around -1. Windy, with a west wind 23 to 29 mph, with gusts as high as 46 mph.

    Low: -1 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: A 20 percent chance of snow after 11am. Mostly sunny and cold, with a high near 9. Breezy.

    High: 9 °F

    Slight Chance
    Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 0. Breezy.

    Low: 0 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 15. Breezy.

    High: 15 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 4. Breezy.

    Low: 4 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around -13. Wind chill values as low as -37. Blustery, with a west northwest wind around 18 mph, with gusts as high as 26 mph.
Sunday
Snow, mainly after 11am. Widespread blowing snow, mainly after noon. High near -4. Wind chill values as low as -38. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
Snow likely before 11pm. Widespread blowing snow, mainly after 5am. Mostly cloudy, then gradually becoming mostly clear, with a low around -14. Wind chill values as low as -41. Windy, with a west northwest wind 22 to 26 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday
Sunny and cold, with a high near 6. Wind chill values as low as -39. Windy, with a west wind 28 to 33 mph, with gusts as high as 50 mph.
Monday Night
Partly cloudy, with a low around -1. Windy, with a west wind 23 to 29 mph, with gusts as high as 46 mph.
Tuesday
A 20 percent chance of snow after 11am. Mostly sunny and cold, with a high near 9. Breezy.
Tuesday Night
Partly cloudy, with a low around 0. Breezy.
Wednesday
Sunny, with a high near 15. Breezy.
Wednesday Night
Mostly cloudy, with a low around 4. Breezy.
Thursday
A slight chance of snow after 11am. Mostly cloudy, with a high near 16. Breezy.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 1.
Friday
A chance of snow. Mostly sunny, with a high near 14. Blustery.
Friday Night
Mostly cloudy, with a low around 4. Breezy.
Saturday
Mostly sunny, with a high near 17. 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:
12:56 pm MST Jan 24, 2026
Forecast Valid:
1am MST Jan 25, 2026-6pm MST Jan 31, 2026
 
Forecast Discussion
 
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Additional Resources

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