Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

71°F

22°C

Humidity 37%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 4 Aug 10:55 am MDT
Extended Forecast for

3 Miles ENE Saint Marys Glacier CO

Fire Weather Watch August 5, 12:00pm until August 5, 07:00pm
Click here for hazard details and duration
Fire Weather Watch
  • Today

    Today: A 30 percent chance of showers and thunderstorms after noon.  Patchy smoke. Partly sunny, with a high near 67. South southwest wind around 7 mph becoming southeast in the afternoon.

    High: 67 °F

    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Patchy smoke before 2am. Partly cloudy, with a low around 45. Southeast wind 5 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Wednesday

    Wednesday: Sunny, with a high near 70. West northwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Northwest wind 5 to 9 mph becoming southwest in the evening. Winds could gust as high as 21 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after noon. Patchy smoke. Partly sunny, with a high near 67. South southwest wind around 7 mph becoming southeast in the afternoon.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Patchy smoke before 2am. Partly cloudy, with a low around 45. Southeast wind 5 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 70. West northwest wind 9 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 45. Northwest wind 5 to 9 mph becoming southwest in the evening. Winds could gust as high as 21 mph.
Thursday
Sunny, with a high near 72. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Clear, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 53.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Saint Marys Glacier CO
 39.85°N 105.61°W (Elev. 10203 ft)
1:02 am MDT Aug 4, 2026
11am MDT Aug 4, 2026-6pm MDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database