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.

Fair

78°F

26°C

Humidity 9%
Wind Speed S 7 G 20 mph
Barometer 30.34 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 3 Jul 2:35 pm MDT
Extended Forecast for

Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: Patchy smoke after 5pm. Mostly sunny, with a high near 58. West wind around 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Patchy Smoke

  • Tonight

    Tonight: Areas of smoke before 5am. Partly cloudy, with a low around 42. West wind 7 to 9 mph becoming east in the evening. Winds could gust as high as 16 mph.

    Low: 42 °F

    Areas Smoke

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Patchy smoke between noon and 4pm. Mostly sunny, with a high near 57. West wind 8 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 17 mph.

    High: 57 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. East northeast wind 8 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. West southwest wind 5 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 58 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny and
    Breezy then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 59.

    High: 59 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Patchy smoke after 5pm. Mostly sunny, with a high near 58. West wind around 10 mph, with gusts as high as 20 mph.
Tonight
Areas of smoke before 5am. Partly cloudy, with a low around 42. West wind 7 to 9 mph becoming east in the evening. Winds could gust as high as 16 mph.
Independence Day
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Patchy smoke between noon and 4pm. Mostly sunny, with a high near 57. West wind 8 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 17 mph.
Saturday Night
Partly cloudy, with a low around 40. East northeast wind 8 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. West southwest wind 5 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 44. Breezy.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Breezy.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 59.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45. Breezy.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 60. Breezy.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Breezy.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 60. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.84°N 105.66°W (Elev. 11798 ft)
Last Update:
12:46 pm MDT Jul 3, 2026
Forecast Valid:
2pm MDT Jul 3, 2026-6pm MDT Jul 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation