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.

Partly Cloudy

60°F

16°C

Humidity 30%
Wind Speed SW 7 mph
Barometer 30.19 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 9 Oct 8:15 pm MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • Tonight

    Tonight: A 20 percent chance of snow showers before 9pm. Mostly clear, with a steady temperature around 38. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.

    Low: 38 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Saturday

    Saturday: A slight chance of snow showers between noon and 3pm, then a chance of rain and snow showers. Increasing clouds, with a high near 45. Breezy, with a west wind 13 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 45 °F

    Breezy. Sunny
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. Breezy, with a west southwest wind 11 to 16 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 46. South southwest wind 9 to 13 mph, with gusts as high as 26 mph.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Breezy, with a south southwest wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 43 mph.

    Low: 35 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Columbus Day

    Columbus Day: Sunny, with a high near 45. Breezy.

    High: 45 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of snow showers after noon. Mostly sunny, with a high near 41. Breezy.

    High: 41 °F

    Sunny then
    Slight Chance
    Snow Showers
    and Breezy

  • Tuesday Night

    Tuesday Night: Snow showers likely. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Snow Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of snow showers before 9pm. Mostly clear, with a steady temperature around 38. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.
Saturday
A slight chance of snow showers between noon and 3pm, then a chance of rain and snow showers. Increasing clouds, with a high near 45. Breezy, with a west wind 13 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 36. Breezy, with a west southwest wind 11 to 16 mph, with gusts as high as 29 mph.
Sunday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 46. South southwest wind 9 to 13 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 35. Breezy, with a south southwest wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 43 mph.
Columbus Day
Sunny, with a high near 45. Breezy.
Monday Night
Mostly clear, with a low around 32.
Tuesday
A slight chance of snow showers after noon. Mostly sunny, with a high near 41. Breezy.
Tuesday Night
Snow showers likely. Mostly cloudy, with a low around 27.
Wednesday
A chance of snow showers. Partly sunny, with a high near 31. Blustery.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 26. Breezy.
Thursday
A chance of snow showers. Partly sunny, with a high near 31. Blustery.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 23.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
12:46 pm MDT Oct 9, 2026
Forecast Valid:
8pm MDT Oct 9, 2026-6pm MDT Oct 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation