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.

Mostly Cloudy

83°F

28°C

Humidity 14%
Wind Speed SW 17 G 25 mph
Barometer 30.32 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Aug 3:35 pm MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

Red Flag Warning August 14, 12:00pm until August 14, 10:00pm
Click here for hazard details and duration
Red Flag Warning

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Areas of smoke. Mostly sunny, with a high near 59. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 59 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Areas of smoke. Partly cloudy, with a low around 45. West wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Areas Smoke

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after noon. Areas of smoke before noon. Increasing clouds, with a high near 59. West wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 59 °F

    Areas Smoke
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Areas of smoke. Cloudy during the early evening, then gradual clearing, with a low around 44. West wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers then
    Areas Smoke

  • Friday

    Friday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. West wind 9 to 11 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 70%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then showers and thunderstorms likely after noon. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.

    High: 53 °F

    Slight Chance
    Showers then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55.

    High: 55 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Areas of smoke. Mostly sunny, with a high near 59. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Tonight
Areas of smoke. Partly cloudy, with a low around 45. West wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Areas of smoke before noon. Increasing clouds, with a high near 59. West wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Areas of smoke. Cloudy during the early evening, then gradual clearing, with a low around 44. West wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. West wind 9 to 11 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Saturday
A slight chance of showers, then showers and thunderstorms likely after noon. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.
Sunday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 56.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 42.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
2:12 pm MDT Aug 13, 2025
Forecast Valid:
3pm MDT Aug 13, 2025-6pm MDT Aug 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation