Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Fair

66°F

19°C

Humidity 62%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 24 Jul 9:35 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 69. Northwest wind 6 to 13 mph becoming east in the afternoon. Winds could gust as high as 28 mph.

    High: 69 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 53. East wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 3pm.  Increasing clouds, with a high near 67. West wind 5 to 8 mph becoming calm. Winds could gust as high as 18 mph.  Chance of precipitation is 60%.

    High: 67 °F

    Sunny then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 57. Breezy, with a west southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm.  Partly sunny, with a high near 67. Breezy, with a west wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 60%.

    High: 67 °F

    Mostly Sunny
    and Breezy
    then T-storms
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 56. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Showers and possibly a thunderstorm after noon.  High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Partly Sunny
    then T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms after noon.  Mostly cloudy, with a high near 63.

    High: 63 °F

    Partly Sunny
    then T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 69. Northwest wind 6 to 13 mph becoming east in the afternoon. Winds could gust as high as 28 mph.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. East wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Saturday
Showers and thunderstorms likely, mainly after 3pm. Increasing clouds, with a high near 67. West wind 5 to 8 mph becoming calm. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 57. Breezy, with a west southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 67. Breezy, with a west wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Monday
Showers and possibly a thunderstorm after noon. High near 65. Chance of precipitation is 80%.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 54.
Tuesday
Showers and thunderstorms after noon. Mostly cloudy, with a high near 63.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 53.
Wednesday
Showers and thunderstorms. Partly sunny, with a high near 63.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Thursday
Showers and possibly a thunderstorm. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.66°W (Elev. 10981 ft)
3:51 am MDT Jul 24, 2026
9am MDT Jul 24, 2026-6pm MDT Jul 30, 2026
 
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Additional Resources

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