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.

Mostly Cloudy

49°F

9°C

Humidity 59%
Wind Speed NE 3 mph
Barometer 30.19 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 4 Oct 12:55 am MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • Overnight

    Overnight: A slight chance of rain and snow showers. Mostly cloudy, with a low around 36. West southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow showers before 8am, then snow showers likely. Some thunder is also possible. Partly sunny, with a high near 43. Breezy, with a southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Breezy.
    Chance
    Rain/Snow
    then Snow
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 25. Breezy, with a west wind 14 to 23 mph, with gusts as high as 40 mph.

    Low: 25 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Sunday

    Sunday: A 20 percent chance of snow showers after noon. Increasing clouds, with a high near 37. West wind 10 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of snow showers. Cloudy, with a low around 25. Southeast wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Chance Snow
    Showers

  • Monday

    Monday: A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 27.

    Low: 27 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A chance of snow showers, mainly after noon. Mostly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    Showers

  • Tuesday Night

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

    Low: 29 °F

    Slight Chance
    Snow Showers

Detailed Forecast

Overnight
A slight chance of rain and snow showers. Mostly cloudy, with a low around 36. West southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday
A chance of rain and snow showers before 8am, then snow showers likely. Some thunder is also possible. Partly sunny, with a high near 43. Breezy, with a southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow showers before 9pm. Partly cloudy, with a low around 25. Breezy, with a west wind 14 to 23 mph, with gusts as high as 40 mph.
Sunday
A 20 percent chance of snow showers after noon. Increasing clouds, with a high near 37. West wind 10 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
A 50 percent chance of snow showers. Cloudy, with a low around 25. Southeast wind 7 to 11 mph, with gusts as high as 21 mph.
Monday
A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 35.
Monday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 27.
Tuesday
A chance of snow showers, mainly after noon. Mostly sunny, with a high near 40.
Tuesday Night
A slight chance of snow showers. Partly cloudy, with a low around 29.
Wednesday
A slight chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 41. Breezy.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Sunny, with a high near 41. Breezy.
Thursday Night
Partly cloudy, with a low around 30.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 41.
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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:
2:21 pm MDT Oct 3, 2025
Forecast Valid:
1am MDT Oct 4, 2025-6pm MDT Oct 10, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation