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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Partly Cloudy

46°F

8°C

Humidity 93%
Wind Speed Calm
Barometer 30.38 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 18 Sep 11:55 pm MDT
Extended Forecast for

Georgetown CO

  • Overnight

    Overnight: Partly cloudy, with a low around 45. West southwest wind around 7 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 69. West southwest wind 7 to 9 mph. Chance of precipitation is 70%.

    High: 69 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 41. West southwest wind 3 to 7 mph. Winds could gust as high as 15 mph.

    Low: 41 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 66. West wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 66 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. West northwest wind 5 to 10 mph becoming light west. Winds could gust as high as 18 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

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

    Low: 44 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. West southwest wind around 7 mph.
Saturday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 69. West southwest wind 7 to 9 mph. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 41. West southwest wind 3 to 7 mph. Winds could gust as high as 15 mph.
Sunday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 66. West wind 6 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 39. West northwest wind 5 to 10 mph becoming light west. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 69.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.
Wednesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 68.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 44.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 68.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 45.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Georgetown CO
 39.71°N 105.71°W (Elev. 8747 ft)
Last Update:
12:46 pm MDT Sep 18, 2026
Forecast Valid:
12am MDT Sep 19, 2026-6pm MDT Sep 25, 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