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

79°F

26°C

Humidity 20%
Wind Speed Calm
Barometer 30.34 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Jul 2:35 pm MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 58. West northwest wind 6 to 8 mph becoming south southwest. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Tonight

    Tonight: 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 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 58. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 58 °F

    Breezy. Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. West southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 43 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then showers and possibly a thunderstorm after noon. High near 57. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 57 °F

    Slight Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 41. Chance of precipitation is 50%.

    Low: 41 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Mostly Sunny
    then T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 58. West northwest wind 6 to 8 mph becoming south southwest. Chance of precipitation is 60%.
Tonight
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 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 58. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. West southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, then showers and possibly a thunderstorm after noon. High near 57. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 41. Chance of precipitation is 50%.
Thursday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 55. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Friday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 56.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 55.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 55.
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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 14, 2025
Forecast Valid:
2pm MDT Jul 14, 2025-6pm MDT Jul 20, 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