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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Quincy Regional Airport-Baldwin Field (KUIN)

Lat: 39.94°NLon: 91.2°WElev: 759ft.

Fair

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.11 in (1019.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 28 Aug 4:54 am CDT
Extended Forecast for

Clayton IL

  • Today

    Today: Sunny, with a high near 83. Calm wind.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. Calm wind becoming south around 5 mph after midnight.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 85. South wind 5 to 11 mph.

    High: 85 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then becoming clear, with a low around 69. South wind around 11 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 92. South wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 83. Calm wind.
Tonight
Mostly clear, with a low around 62. Calm wind becoming south around 5 mph after midnight.
Saturday
Increasing clouds, with a high near 85. South wind 5 to 11 mph.
Saturday Night
Mostly cloudy during the early evening, then becoming clear, with a low around 69. South wind around 11 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 92. South wind 11 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 74.
Monday
Mostly sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
A 20 percent chance of showers. Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clayton IL
 40.03°N 90.94°W (Elev. 728 ft)
Last Update:
5:21 am CDT Aug 28, 2026
Forecast Valid:
5am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation