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.

Overcast

46°F

8°C

Humidity 74%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 23 Mar 7:35 pm MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Tonight

    Tonight: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 27. Blustery, with a west wind 20 to 23 mph, with gusts as high as 34 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow
    Showers and
    Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. Windy, with a west northwest wind 23 to 28 mph, with gusts as high as 41 mph.

    High: 42 °F

    Mostly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 31. Breezy, with a west wind 20 to 24 mph, with gusts as high as 37 mph.

    Low: 31 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: A 20 percent chance of snow showers after noon. Sunny, with a high near 48. Breezy, with a west wind around 23 mph, with gusts as high as 39 mph.

    High: 48 °F

    Breezy. Sunny
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32. Breezy, with a west wind 18 to 23 mph, with gusts as high as 39 mph.

    Low: 32 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: A 40 percent chance of snow showers after noon. Mostly sunny, with a high near 43. Windy.

    High: 43 °F

    Sunny and
    Breezy then
    Chance Snow
    Showers and
    Windy

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 18. Windy.

    Low: 18 °F

    Chance Snow
    and Windy

  • Friday

    Friday: A chance of snow. Partly sunny, with a high near 30. Blustery.

    High: 30 °F

    Chance Snow
    and Blustery

  • Friday Night

    Friday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 27. Blustery, with a west wind 20 to 23 mph, with gusts as high as 34 mph. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 42. Windy, with a west northwest wind 23 to 28 mph, with gusts as high as 41 mph.
Tuesday Night
Mostly clear, with a low around 31. Breezy, with a west wind 20 to 24 mph, with gusts as high as 37 mph.
Wednesday
A 20 percent chance of snow showers after noon. Sunny, with a high near 48. Breezy, with a west wind around 23 mph, with gusts as high as 39 mph.
Wednesday Night
Mostly clear, with a low around 32. Breezy, with a west wind 18 to 23 mph, with gusts as high as 39 mph.
Thursday
A 40 percent chance of snow showers after noon. Mostly sunny, with a high near 43. Windy.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 18. Windy.
Friday
A chance of snow. Partly sunny, with a high near 30. Blustery.
Friday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 18. Breezy.
Saturday
A chance of snow after noon. Partly sunny, with a high near 38. Breezy.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 24. Blustery.
Sunday
Snow likely. Mostly cloudy, with a high near 37. Breezy.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 23. Breezy.
Monday
Snow likely. Mostly cloudy, with a high near 36. Breezy.
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Forecast Area
Tiles ©ESRI

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 pm MDT Mar 23, 2026
Forecast Valid:
7pm MDT Mar 23, 2026-6pm MDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

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