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.

Fair

16°C

61°F

Humidity 41%
Wind Speed Calm
Barometer 30.49 in
Dewpoint 3°C (37°F)
Visibility 16 km
Last update 13 Jul 9:15 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Today

    Today: A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 13. North northeast wind 10 to 14 km/h becoming east southeast in the afternoon. Winds could gust as high as 24 km/h. Chance of precipitation is 30%.

    High: 13 °C

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 7. East southeast wind 14 to 16 km/h becoming west after midnight. Winds could gust as high as 26 km/h. Chance of precipitation is 30%.

    Low: 7 °C

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Sunny through mid morning, then becoming mostly cloudy, with a high near 15. Northwest wind 13 to 16 km/h, with gusts as high as 26 km/h. Chance of precipitation is 70%.

    High: 15 °C

    Sunny then
    Showers
    Likely

  • Monday Night

    Monday Night: 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 7. West southwest wind 16 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 20%.

    Low: 7 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 14. Northwest wind 18 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 70%.

    High: 14 °C

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 6. Chance of precipitation is 50%.

    Low: 6 °C

    Chance
    Showers then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 13. Chance of precipitation is 90%.

    High: 13 °C

    Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 4.

    Low: 4 °C

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 13.

    High: 13 °C

    Partly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 13. North northeast wind 10 to 14 km/h becoming east southeast in the afternoon. Winds could gust as high as 24 km/h. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 7. East southeast wind 14 to 16 km/h becoming west after midnight. Winds could gust as high as 26 km/h. Chance of precipitation is 30%.
Monday
Showers likely and possibly a thunderstorm after noon. Sunny through mid morning, then becoming mostly cloudy, with a high near 15. Northwest wind 13 to 16 km/h, with gusts as high as 26 km/h. Chance of precipitation is 70%.
Monday Night
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 7. West southwest wind 16 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 20%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 14. Northwest wind 18 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 6. Chance of precipitation is 50%.
Wednesday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 13. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 4.
Thursday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 13.
Thursday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 6.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 13.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 6.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 13.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 m)
Last Update:
4:01 am MDT Jul 13, 2025
Forecast Valid:
9am MDT Jul 13, 2025-6pm MDT Jul 19, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation