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

Granby-Grand County Airport (KGNB)

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

Fair

26°F

-3°C

Humidity 84%
Wind Speed E 5 mph
Barometer 30.80 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 16 Oct 2:15 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Mostly clear, with a low around 13. North northwest wind around 9 mph, with gusts as high as 15 mph.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 36. North wind 5 to 9 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

    High: 36 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 24. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 44. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Blustery, with a west wind 7 to 17 mph, with gusts as high as 30 mph.

    Low: 27 °F

    Mostly Clear
    and Blustery

  • Sunday

    Sunday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow showers after noon. Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 13. North northwest wind around 9 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 36. North wind 5 to 9 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Clear, with a low around 24. West wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 44. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 27. Blustery, with a west wind 7 to 17 mph, with gusts as high as 30 mph.
Sunday
Partly sunny, with a high near 43.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
A slight chance of snow showers after noon. Mostly sunny, with a high near 39.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
A slight chance of snow showers after noon. Mostly sunny, with a high near 41.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
A chance of snow showers. Partly sunny, with a high near 42.
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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:
12:46 am MDT Oct 16, 2026
Forecast Valid:
2am MDT Oct 16, 2026-6pm MDT Oct 22, 2026
 
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