Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Overcast

52°F

11°C

Humidity 91%
Wind Speed Calm
Barometer 30.49 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 18 Sep 1:35 am MDT
Extended Forecast for

6 Miles S Grand Lake CO

  • Overnight

    Overnight: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm.  Mostly cloudy, with a high near 65. Calm wind becoming south southwest around 6 mph in the afternoon.  Chance of precipitation is 60%.

    High: 65 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 42. South southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 63. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 50%.

    High: 63 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 38. West southwest wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 22 mph.  Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 58. Chance of precipitation is 40%.

    High: 58 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 48. Calm wind.
Friday
A chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 65. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 42. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 58. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 39.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S Grand Lake CO
 40.16°N 105.84°W (Elev. 8379 ft)
12:46 am MDT Sep 18, 2026
1am MDT Sep 18, 2026-6pm MDT Sep 24, 2026
 
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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