Dangerous Heat Continues; Monitoring Excessive Rainfall and Flash Flooding

The heat continues along and east of the Mississippi River. The most significant cumulative heat impacts are expected across the Mid-Atlantic through today and eastern Ohio Valley through Friday. Severe weather and heavy rainfall potential from the Southwest, Plains, upper Midwest, Great Lakes, mid-Atlantic and Northeast the next couple of days. A disturbance near the Marianas may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

46°F

8°C

Humidity 73%
Wind Speed Calm
Barometer 30.41 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 26 Jun 8:15 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Increasing clouds, with a high near 58. West wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 16 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 44. Breezy, with a north wind 9 to 17 mph becoming south in the evening. Winds could gust as high as 25 mph.

    Low: 44 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Increasing clouds, with a high near 62. Breezy, with a west southwest wind 8 to 16 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph.

    High: 62 °F

    Sunny and
    Breezy then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Breezy, with a southwest wind 8 to 17 mph, with gusts as high as 26 mph.

    Low: 47 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 63. Breezy, with a west wind 9 to 17 mph becoming east in the afternoon. Winds could gust as high as 26 mph.

    High: 63 °F

    Sunny and
    Breezy then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Showers and thunderstorms likely after noon.  Partly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 58. West wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 16 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 44. Breezy, with a north wind 9 to 17 mph becoming south in the evening. Winds could gust as high as 25 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 62. Breezy, with a west southwest wind 8 to 16 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Partly cloudy, with a low around 47. Breezy, with a southwest wind 8 to 17 mph, with gusts as high as 26 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 63. Breezy, with a west wind 9 to 17 mph becoming east in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 61.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.
Monday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 58.
Monday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 61.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 45. Breezy.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 61. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
4:01 am MDT Jun 26, 2025
8am MDT Jun 26, 2025-6pm MDT Jul 2, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database