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

70°F

21°C

Humidity 39%
Wind Speed SE 8 mph
Barometer 30.34 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 14 Jul 7:55 pm MDT
Extended Forecast for

3 Miles WNW Saint Marys Glacier CO

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 44. West southwest wind 8 to 13 mph, with gusts as high as 21 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 13 to 15 mph, with gusts as high as 24 mph.

    High: 58 °F

    Sunny then
    Chance
    T-storms and
    Breezy

  • 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 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 43 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 56. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 56 °F

    Mostly Sunny
    then T-storms
    Likely

  • 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. Northwest wind 9 to 11 mph becoming south in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    Low: 41 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    T-storms then
    Partly 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

  • Friday Night

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

    Low: 43 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 44. West southwest wind 8 to 13 mph, with gusts as high as 21 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 13 to 15 mph, with gusts as high as 24 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 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 56. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
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. Northwest wind 9 to 11 mph becoming south in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.
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 after noon. Partly sunny, with a high near 55.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 53.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 43. Breezy.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 54. Breezy.
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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:
3:23 pm MDT Jul 14, 2025
Forecast Valid:
8pm MDT Jul 14, 2025-6pm MDT Jul 21, 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