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

50°F

10°C

Humidity 31%
Wind Speed Calm
Barometer 30.43 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 8 Nov 11:55 am MST
Extended Forecast for

Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: Sunny, with a high near 45. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 29. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.

    Low: 29 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 46. Breezy, with a northwest wind 12 to 17 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 46 °F

    Sunny and
    Breezy then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Breezy, with a west wind 10 to 17 mph, with gusts as high as 29 mph.

    Low: 31 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. Breezy, with a west wind 18 to 20 mph, with gusts as high as 33 mph.

    High: 40 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. Breezy.

    Low: 27 °F

    Mostly Clear
    and Breezy

  • Veterans Day

    Veterans Day: Sunny, with a high near 40. Windy.

    High: 40 °F

    Sunny and
    Windy then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28. Breezy.

    Low: 28 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 44. Breezy.

    High: 44 °F

    Sunny and
    Breezy then
    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 45. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 29. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.
Monday
Sunny, with a high near 46. Breezy, with a northwest wind 12 to 17 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 29 mph.
Monday Night
Partly cloudy, with a low around 31. Breezy, with a west wind 10 to 17 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 40. Breezy, with a west wind 18 to 20 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly clear, with a low around 27. Breezy.
Veterans Day
Sunny, with a high near 40. Windy.
Wednesday Night
Mostly clear, with a low around 28. Breezy.
Thursday
Sunny, with a high near 44. Breezy.
Thursday Night
Mostly clear, with a low around 29. Breezy.
Friday
Sunny, with a high near 45. Breezy.
Friday Night
Partly cloudy, with a low around 29. Breezy.
Saturday
Mostly sunny, with a high near 42. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
11:46 am MST Nov 8, 2026
Forecast Valid:
12pm MST Nov 8, 2026-6pm MST Nov 14, 2026
 
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