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.

Fair

52°F

11°C

Humidity 58%
Wind Speed NE 5 mph
Barometer 30.56 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 25 Aug 12:55 am MDT
Extended Forecast for

2 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 47. West wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 59. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 59 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 44. West southwest wind around 8 mph.

    Low: 44 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between noon and 2pm, then showers likely and possibly a thunderstorm after 2pm. Sunny during the morning, then mostly cloudy during the afternoon, with a high near 60. West wind around 8 mph becoming east northeast in the afternoon. Chance of precipitation is 60%.

    High: 60 °F

    Mostly Sunny
    then Showers
    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 43. Breezy, with an east wind 8 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. Breezy.

    High: 58 °F

    Mostly Sunny
    and Breezy
    then Chance
    T-storms

  • Thursday Night

    Thursday 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 45. Breezy. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Friday

    Friday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Breezy.

    High: 60 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47. Breezy.

    Low: 47 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 47. West wind 10 to 13 mph, with gusts as high as 21 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 59. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 44. West southwest wind around 8 mph.
Wednesday
A slight chance of showers and thunderstorms between noon and 2pm, then showers likely and possibly a thunderstorm after 2pm. Sunny during the morning, then mostly cloudy during the afternoon, with a high near 60. West wind around 8 mph becoming east northeast in the afternoon. Chance of precipitation is 60%.
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 43. Breezy, with an east wind 8 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. Breezy.
Thursday 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 45. Breezy. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Breezy.
Friday Night
Mostly cloudy, with a low around 47. Breezy.
Saturday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Breezy.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 56. Breezy.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Saint Marys Glacier CO
 39.84°N 105.66°W (Elev. 11798 ft)
Last Update:
12:46 am MDT Aug 25, 2026
Forecast Valid:
1am MDT Aug 25, 2026-6pm MDT Aug 31, 2026
 
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