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

72°F

22°C

Humidity 35%
Wind Speed Calm
Barometer 30.54 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 27 Aug 11:15 am MDT
Extended Forecast for

2 Miles NNE Saint Marys Glacier CO

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 62. West northwest wind 7 to 10 mph becoming east in the afternoon. Winds could gust as high as 16 mph.

    High: 62 °F

    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Breezy, with an east southeast wind 6 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.

    Low: 49 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 63. Breezy, with a west wind 13 to 16 mph, with gusts as high as 28 mph.

    High: 63 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51. Breezy, with a west wind 9 to 16 mph, with gusts as high as 25 mph.

    Low: 51 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Breezy, with a west wind 13 to 20 mph, with gusts as high as 33 mph.

    High: 63 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. Breezy. Chance of precipitation is 30%.

    Low: 50 °F

    Breezy.
    Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Breezy.

    High: 59 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 62. West northwest wind 7 to 10 mph becoming east in the afternoon. Winds could gust as high as 16 mph.
Tonight
Partly cloudy, with a low around 49. Breezy, with an east southeast wind 6 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.
Friday
Mostly sunny, with a high near 63. Breezy, with a west wind 13 to 16 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 51. Breezy, with a west wind 9 to 16 mph, with gusts as high as 25 mph.
Saturday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Breezy, with a west wind 13 to 20 mph, with gusts as high as 33 mph.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. Breezy. Chance of precipitation is 30%.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Breezy.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 46.
Monday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44. Breezy.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 57. Breezy.
Tuesday Night
Partly cloudy, with a low around 45. Breezy.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
7:53 am MDT Aug 27, 2026
Forecast Valid:
11am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation