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Clayton, IL Weather Forecast

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Clayton, IL Weather Forecast

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Clayton IL weather - Mostly Clear - 85°F
Mostly Clear
85°F
Updated 3:13 pm
Feels Like 93°F
Humidity 57%
Wind E 9 mph
Barometer  30.03 in
Dew Point 68°F
Clayton IL weather - Mostly Clear - 29°C
Mostly Clear
29°C
Updated 3:13 pm
Feels Like 34°C
Humidity 57%
Wind E 14 km/h
Barometer  101.7 kPa
Dew Point 20°C
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Clayton Weather Forecast

THIS AFTERNOON TONIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT
Clayton, IL Weather - This Afternoon Mostly Sunny Clayton, IL Weather - Tonight Partly Cloudy Clayton, IL Weather - Labor Day Mostly Sunny Clayton, IL Weather - Monday Night Partly Cloudy Clayton, IL Weather - Tuesday Mostly Sunny Clayton, IL Weather - Tuesday Night Chance Of T-Storm Clayton, IL Weather - Wednesday Chance Of T-Storm Clayton, IL Weather - Wednesday Night Chance Of T-Storm Clayton, IL Weather - Thursday Chance Of Showers Clayton, IL Weather - Thursday Night Chance Of Showers Clayton, IL Weather - Friday Chance Of Showers Clayton, IL Weather - Friday Night Chance Of T-Storm
Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers Chance of T-Storm
Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 95°FHi: 35°C
 Lo: 75°FLo: 24°C Hi: 91°FHi: 33°C
Lo: 65°FLo: 18°C		 Hi: 91°FHi: 33°C
Lo: 65°FLo: 18°C		 Hi: 81°FHi: 27°C
 Hi: 85°FHi: 29°C
Lo: 60°FLo: 16°C		 Hi: 85°FHi: 29°C
Lo: 60°FLo: 16°C		 Lo: 65°FLo: 18°C
POP: 20% POP: 70% POP: 70% POP: 20% POP: 20% POP: 20% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Sun Sep 06 2026 Clayton, IL Weather - WeatherWorld.com

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Issued: 224 PM CDT Sun Sep 6 2026

Key Messages

  • Less humid air is in store for Labor Day before a (brief) return to well-above normal temperatures Tuesday through Wednesday.

Aviation

/18Z TAFS THROUGH 00Z TUESDAY/... Issued at 1222 PM CDT Sun Sep 6 2026

The NW-SE oriented stratus is quickly scattering as low-level dry air is advecting in from the northeast. VFR conditions are expected for the remainder of the period, with any threat for showers and thunderstorms stay to the west and south of the central Missouri sites.


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