Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

69°F

21°C

Humidity 16%
Wind Speed W 14 G 26 mph
Barometer 29.93 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 28 Jun 8:15 pm MDT
Extended Forecast for

2 Miles NNE Saint Marys Glacier CO

Red Flag Warning June 29, 12:00pm until June 29, 09:00pm
Red Flag Warning June 28, 08:23pm until June 28, 09:00pm
Click here for hazard details and duration
Red Flag Warning
...
  •  
    Red Flag Warning June 28, 08:23pm until June 28, 09:00pm

    NOW until 9:00pm Sun

    Red Flag Warning

  • Tonight

    Low: 40 °F

    Areas Smoke
    and Breezy

  • Monday

    Monday: Patchy smoke before noon. Sunny, with a high near 58. Windy, with a west southwest wind 17 to 22 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 41 mph.

    High: 58 °F

    Windy. Patchy
    Smoke then
    Sunny

  • Monday Night

    Monday Night: Patchy smoke. Mostly clear, with a low around 42. Breezy, with a west southwest wind 11 to 21 mph, with gusts as high as 33 mph.

    Low: 42 °F

    Patchy Smoke
    and Breezy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon.  Patchy smoke before noon. Mostly sunny, with a high near 61. Breezy, with a west southwest wind 11 to 16 mph becoming south southeast in the morning. Winds could gust as high as 30 mph.

    High: 61 °F

    Breezy.
    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. Breezy, with a west wind 14 to 17 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Tonight
Areas of smoke before 3am. Mostly clear, with a low around 40. Breezy, with a southwest wind 16 to 21 mph, with gusts as high as 33 mph.
Monday
Patchy smoke before noon. Sunny, with a high near 58. Windy, with a west southwest wind 17 to 22 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 41 mph.
Monday Night
Patchy smoke. Mostly clear, with a low around 42. Breezy, with a west southwest wind 11 to 21 mph, with gusts as high as 33 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Patchy smoke before noon. Mostly sunny, with a high near 61. Breezy, with a west southwest wind 11 to 16 mph becoming south southeast in the morning. Winds could gust as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 40. Breezy, with a west wind 14 to 17 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 60. Breezy.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 43. Breezy.
Friday
Sunny, with a high near 66. Breezy.
Friday Night
Partly cloudy, with a low around 48. Breezy.
Independence Day
Mostly sunny, with a high near 64. Breezy.
Saturday Night
Partly cloudy, with a low around 44. Breezy.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 63.
Basemap Options
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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)
12:46 pm MDT Jun 28, 2026
8pm MDT Jun 28, 2026-6pm MDT Jul 5, 2026
 
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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