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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Mostly Cloudy and Breezy

75°F

24°C

Humidity 19%
Wind Speed W 21 G 25 mph
Barometer 30.42 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 17 Aug 12:35 pm MDT
Extended Forecast for

11 Miles SE Glendevey CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. West southwest wind 6 to 8 mph.

    High: 77 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 48. West southwest wind around 5 mph becoming light and variable.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. East wind around 6 mph becoming light and variable.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. Light and variable wind becoming east 5 to 7 mph in the morning. Winds could gust as high as 15 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. West southwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 48. West southwest wind around 5 mph becoming light and variable.
Monday
Sunny, with a high near 79. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 49. East wind around 6 mph becoming light and variable.
Tuesday
Sunny, with a high near 81. Light and variable wind becoming east 5 to 7 mph in the morning. Winds could gust as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 77.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SE Glendevey CO
 40.67°N 105.78°W (Elev. 8199 ft)
Last Update:
7:14 am MDT Aug 17, 2025
Forecast Valid:
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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