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

77°F

25°C

Humidity 19%
Wind Speed NW 5 mph
Barometer 30.55 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 12 Jul 10:55 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Sunny, with a high near 66. East wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. East southeast wind 10 to 14 mph becoming west southwest after midnight. Winds could gust as high as 22 mph.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 67. West wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 18 mph.

    High: 67 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. East wind 8 to 13 mph becoming west southwest after midnight. Winds could gust as high as 25 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. Breezy, with a south southwest wind 6 to 11 mph becoming east 15 to 20 mph in the morning. Winds could gust as high as 32 mph.

    High: 66 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Breezy.

    Low: 49 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67. Breezy.

    High: 67 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Breezy.

    Low: 49 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 67. Breezy.

    High: 67 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 66. East wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 49. East southeast wind 10 to 14 mph becoming west southwest after midnight. Winds could gust as high as 22 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 67. West wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 50. East wind 8 to 13 mph becoming west southwest after midnight. Winds could gust as high as 25 mph.
Tuesday
Sunny, with a high near 66. Breezy, with a south southwest wind 6 to 11 mph becoming east 15 to 20 mph in the morning. Winds could gust as high as 32 mph.
Tuesday Night
Mostly clear, with a low around 49. Breezy.
Wednesday
Sunny, with a high near 67. Breezy.
Wednesday Night
Mostly clear, with a low around 49. Breezy.
Thursday
Sunny, with a high near 67. Breezy.
Thursday Night
Mostly clear, with a low around 50. Breezy.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 67. Breezy.
Friday Night
Partly cloudy, with a low around 51. Breezy.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 65. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.66°W (Elev. 10981 ft)
Last Update:
12:46 am MDT Jul 12, 2026
Forecast Valid:
11am MDT Jul 12, 2026-6pm MDT Jul 18, 2026
 
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