National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Partly Cloudy

49°F

9°C

Humidity 99%
Wind Speed N 5 mph
Barometer 30.51 in
Dewpoint 48°F (9°C)
Visibility 7.00 mi
Wind Chill47°F (8°C)
Last update 23 Aug 6:15 am MDT
Extended Forecast for

2 Miles NW Saint Marys Glacier CO

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 63. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 63 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • 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 47. West wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 63. West wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 63 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 61. Northwest wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

    High: 61 °F

    Mostly Sunny
    then Showers
    Likely

  • 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. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

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

    Low: 44 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 63. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
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 47. West wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 63. West wind 6 to 13 mph, with gusts as high as 21 mph.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 61. Northwest wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.
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. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 62. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44.
Thursday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 63.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 64.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 45.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Saint Marys Glacier CO
 39.87°N 105.66°W (Elev. 10620 ft)
Last Update:
2:19 am MDT Aug 23, 2026
Forecast Valid:
6am MDT Aug 23, 2026-6pm MDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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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