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Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

82°F

28°C

Humidity 14%
Wind Speed NW 15 G 22 mph
Barometer 30.44 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Aug 1:15 pm MDT
Extended Forecast for

Devils Thumb Park CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 74. West northwest wind around 6 mph becoming southeast.

    High: 74 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 50. East southeast wind 5 to 7 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. East wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Calm wind becoming east northeast 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 80.

    High: 80 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers before midnight. Partly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 74. West northwest wind around 6 mph becoming southeast.
Tonight
Mostly clear, with a low around 50. East southeast wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 76. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 51. East wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 79. Calm wind becoming east northeast 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 80.
Thursday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 52.
Friday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 73.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 49.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 72.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Devils Thumb Park CO
 39.95°N 105.76°W (Elev. 8848 ft)
Last Update:
4:00 am MDT Aug 18, 2025
Forecast Valid:
1pm MDT Aug 18, 2025-6pm MDT Aug 24, 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