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

61°F

16°C

Humidity 41%
Wind Speed Calm
Barometer 30.49 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 13 Jul 9:15 am MDT
Extended Forecast for

3 Miles WNW 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 55. North northeast wind 6 to 9 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 30%.

    High: 55 °F

    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 44. East southeast wind around 10 mph becoming west after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 30%.

    Low: 44 °F

    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 59. Northwest wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

    High: 59 °F

    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 44. West southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Northwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.

    Low: 42 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 55.

    High: 55 °F

    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 55. North northeast wind 6 to 9 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph. 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 44. East southeast wind around 10 mph becoming west after midnight. Winds could gust as high as 16 mph. 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 59. Northwest wind 8 to 10 mph, with gusts as high as 16 mph. 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 44. West southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Northwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.
Wednesday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 55. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 40.
Thursday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 55.
Thursday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 56.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 43.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 56.
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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:
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