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.

Overcast

52°F

11°C

Humidity 31%
Wind Speed W 12 mph
Barometer 29.86 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 14 Nov 1:15 pm MST
Extended Forecast for

Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: Snow showers likely, mainly after 5pm. Cloudy, with a high near 35. East wind 5 to 7 mph becoming north northwest. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.

    High: 35 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers likely, mainly before 8pm. Mostly cloudy, with a low around 28. Northwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Snow Showers
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 38. West northwest wind 6 to 11 mph becoming light and variable in the afternoon. Winds could gust as high as 18 mph.

    High: 38 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. West wind 9 to 14 mph, with gusts as high as 26 mph.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 48. West wind 9 to 14 mph becoming light and variable in the afternoon. Winds could gust as high as 25 mph.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43. Breezy.

    High: 43 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after 11pm. Partly cloudy, with a low around 29.

    Low: 29 °F

    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: A slight chance of snow showers. Mostly sunny, with a high near 33. Breezy.

    High: 33 °F

    Slight Chance
    Snow Showers
    and Breezy

Detailed Forecast

This Afternoon
Snow showers likely, mainly after 5pm. Cloudy, with a high near 35. East wind 5 to 7 mph becoming north northwest. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow showers likely, mainly before 8pm. Mostly cloudy, with a low around 28. Northwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 38. West northwest wind 6 to 11 mph becoming light and variable in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 27. West wind 9 to 14 mph, with gusts as high as 26 mph.
Monday
Mostly sunny, with a high near 48. West wind 9 to 14 mph becoming light and variable in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 43. Breezy.
Tuesday Night
A slight chance of snow showers after 11pm. Partly cloudy, with a low around 29.
Wednesday
A slight chance of snow showers. Mostly sunny, with a high near 33. Breezy.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
A slight chance of snow showers. Partly cloudy, with a low around 25.
Friday
Snow showers likely. Partly sunny, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
11:46 am MST Nov 14, 2026
Forecast Valid:
1pm MST Nov 14, 2026-6pm MST Nov 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation