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Clayton MO Weather - Clear - 69°F
Clear
69°F
Updated 3:59 am
Feels Like 66°F
Humidity 65%
Wind ESE 6 mph
Barometer  30.08 in
Dew Point 57°F
Clayton MO Weather - Clear - 21°C
Clear
21°C
Updated 3:59 am
Feels Like 19°C
Humidity 65%
Wind ESE 10 km/h
Barometer  101.9 kPa
Dew Point 14°C
Clayton, MO Weather and Current Conditionsclayton mo weather forecast

Clayton, MO Weather Forecast

Clayton Missouri WeatherClayton, Missouri Weather Weather Forecast
14 day API forecast for Clayton, Missouri. Note. The 7-day weather forecast for Clayton, MO is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Clayton, MO Weather Forecast Dated: 359 AM Tue Sep 08 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate. Isolated storms at times.

Tuesday, September 8, 2026

Mid-Morning
Clayton Weather - 2026-09-08 - Morning - Sunny
76°F 24°C
Sunny
Mid-Afternoon
Clayton Weather - 2026-09-08 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Clayton Weather - 2026-09-08 - Evening - Overcast
93°F 34°C
Overcast
Very hot with temperatures reaching 97°F 36°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.

Wednesday, September 9, 2026

Mid-Morning
Clayton Weather - 2026-09-09 - Morning - Sunny
85°F 30°C
Sunny
Mid-Afternoon
Clayton Weather - 2026-09-09 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Clayton Weather - 2026-09-09 - Evening - Rain
79°F 26°C
Rain
Sweltering heat reaching 101°F 38°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds turning from the SW to the WSW at 6 mph 10 km/h.

Thursday, September 10, 2026

Mid-Morning
Clayton Weather - 2026-09-10 - Morning - Overcast
74°F 24°C
Overcast
Mid-Afternoon
Clayton Weather - 2026-09-10 - Afternoon - Light Showers
81°F 27°C
Light Showers
Early-Evening
Clayton Weather - 2026-09-10 - Evening - Light Showers
82°F 28°C
Light Showers
Very warm near 81°F 27°C, though humidity makes it feel like 86°F 30°C, dry early, with showers continuing through afternoon and evening, with lower humidity and steady pressure.

Friday, September 11, 2026

Mid-Morning
Clayton Weather - 2026-09-11 - Morning - Overcast
76°F 24°C
Overcast
Mid-Afternoon
Clayton Weather - 2026-09-11 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Clayton Weather - 2026-09-11 - Evening - Sunny
86°F 30°C
Sunny
Hot temperatures near 94°F 34°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.

Saturday, September 12, 2026

Mid-Morning
Clayton Weather - 2026-09-12 - Morning - Cloudy
78°F 26°C
Cloudy
Mid-Afternoon
Clayton Weather - 2026-09-12 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Clayton Weather - 2026-09-12 - Evening - Sunny
94°F 35°C
Sunny
Hot and sweltering around 96°F 36°C (heat index 101°F 38°C), cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the W to the SSE at 4 mph 7 km/h.

Sunday, September 13, 2026

Mid-Morning
Clayton Weather - 2026-09-13 - Morning - Cloudy
87°F 30°C
Cloudy
Mid-Afternoon
Clayton Weather - 2026-09-13 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Clayton Weather - 2026-09-13 - Evening - Sunny
97°F 36°C
Sunny
Sweltering heat reaching 101°F 38°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds SSW at 12 mph 19 km/h. Gusts up to 20 mph 33 km/h.

Monday, September 14, 2026

Mid-Morning
Clayton Weather - 2026-09-14 - Morning - Sunny
87°F 30°C
Sunny
Mid-Afternoon
Clayton Weather - 2026-09-14 - Afternoon - Partly Cloudy
98°F 37°C
Partly Cloudy
Early-Evening
Clayton Weather - 2026-09-14 - Evening - Partly Cloudy
88°F 31°C
Partly Cloudy
Sizzling hot near 98°F 37°C with a heat index reaching 101°F 38°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the SSW to the WSW at 8 mph 12 km/h.

Tuesday, September 15, 2026

Mid-Morning
Clayton Weather - 2026-09-15 - Morning - Scattered Showers
61°F 16°C
Scattered Showers
Mid-Afternoon
Clayton Weather - 2026-09-15 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Clayton Weather - 2026-09-15 - Evening - Sunny
67°F 19°C
Sunny
Enjoyable around 73°F 23°C, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the NNW to the SE at 10 mph 15 km/h.

Wednesday, September 16, 2026

Mid-Morning
Clayton Weather - 2026-09-16 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
Clayton Weather - 2026-09-16 - Afternoon - Partly Cloudy
72°F 22°C
Partly Cloudy
Early-Evening
Clayton Weather - 2026-09-16 - Evening - Cloudy
68°F 20°C
Cloudy
Mild temperatures up to 72°F 22°C, cloudy through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the N to the NE at 7 mph 11 km/h.

Thursday, September 17, 2026

Mid-Morning
Clayton Weather - 2026-09-17 - Morning - Cloudy
61°F 16°C
Cloudy
Mid-Afternoon
Clayton Weather - 2026-09-17 - Afternoon - Cloudy
77°F 25°C
Cloudy
Early-Evening
Clayton Weather - 2026-09-17 - Evening - Overcast
74°F 23°C
Overcast
Mild with a high of 77°F 25°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling.

Friday, September 18, 2026

Mid-Morning
Clayton Weather - 2026-09-18 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Clayton Weather - 2026-09-18 - Afternoon - Cloudy
89°F 32°C
Cloudy
Early-Evening
Clayton Weather - 2026-09-18 - Evening - Cloudy
86°F 30°C
Cloudy
Warm and summery near 89°F 32°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds switching from the SSE to the S at 11 mph 17 km/h. Gusts up to 23 mph 37 km/h.

Saturday, September 19, 2026

Mid-Morning
Clayton Weather - 2026-09-19 - Morning - Scattered Showers
58°F 15°C
Scattered Showers
Mid-Afternoon
Clayton Weather - 2026-09-19 - Afternoon - Light Showers
59°F 15°C
Light Showers
Early-Evening
Clayton Weather - 2026-09-19 - Evening - Light Showers
60°F 16°C
Light Showers
Cool with a high near 59°F 15°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds moving from the N to the NNE at 8 mph 13 km/h.

Sunday, September 20, 2026

Mid-Morning
Clayton Weather - 2026-09-20 - Morning - Overcast
56°F 14°C
Overcast
Mid-Afternoon
Clayton Weather - 2026-09-20 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Clayton Weather - 2026-09-20 - Evening - Sunny
68°F 20°C
Sunny
Enjoyable around 71°F 22°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the ENE to the E at 5 mph 8 km/h.

Monday, September 21, 2026

Mid-Morning
Clayton Weather - 2026-09-21 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Clayton Weather - 2026-09-21 - Afternoon - Sunny
76°F 24°C
Sunny
Early-Evening
Clayton Weather - 2026-09-21 - Evening - Sunny
71°F 22°C
Sunny
Mild temperatures up to 76°F 24°C, sunny throughout the day, with lower humidity and steady pressure.

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Weather by the Numbers

Tue, 8th
Clayton MO Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 97°F 36°C
Lo: 66°F 19°C
Sunrise 06:36 AM
Sunset 07:21 PM
Wind S 6 mph10 km/h
Dew Point 47°F8°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 9% *
Humidity 23%
Wed, 9th
Clayton MO Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 101°F 38°C
Lo: 75°F 24°C
Sunrise 06:37 AM
Sunset 07:19 PM
Wind W 8 mph13 km/h
Dew Point 60°F16°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 31%
Thu, 10th
Clayton MO Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 84°F 29°C
Lo: 73°F 23°C
Sunrise 06:38 AM
Sunset 07:17 PM
Wind W 6 mph9 km/h
Dew Point 69°F20°C
uv Index 3
Barometric Pressure 29.97 in1015 mb
POP 19% *
Humidity 72%
Fri, 11th
Clayton MO Weather - Friday, Sep 11, 2026 - Cloudy
Hi: 94°F 35°C
Lo: 72°F 22°C
Sunrise 06:39 AM
Sunset 07:16 PM
Wind S 7 mph12 km/h
Dew Point 65°F18°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 8% *
Humidity 48%
Sat, 12th
Clayton MO Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 98°F 37°C
Lo: 73°F 23°C
Sunrise 06:40 AM
Sunset 07:14 PM
Wind SW 5 mph8 km/h
Dew Point 67°F20°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 49%
Sun, 13th
Clayton MO Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 101°F 39°C
Lo: 82°F 28°C
Sunrise 06:41 AM
Sunset 07:13 PM
Wind SSW 11 mph17 km/h
Dew Point 62°F17°C
uv Index 9
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 34%
Mon, 14th
Clayton MO Weather - Monday, Sep 14, 2026 - Sunny
Hi: 98°F 37°C
Lo: 76°F 24°C
Sunrise 06:42 AM
Sunset 07:11 PM
Wind SW 12 mph19 km/h
Dew Point 63°F17°C
uv Index 9
Barometric Pressure 29.91 in1013 mb
POP 2% *
Humidity 35%
Tue, 15th
Clayton MO Weather - Tuesday, Sep 15, 2026 - Overcast
Hi: 74°F 23°C
Lo: 60°F 15°C
Sunrise 06:43 AM
Sunset 07:09 PM
Wind NNW 12 mph19 km/h
Dew Point 40°F5°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 3% *
Humidity 38%
Wed, 16th
Clayton MO Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 73°F 23°C
Lo: 51°F 11°C
Sunrise 06:44 AM
Sunset 07:08 PM
Wind NNE 8 mph13 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 30.36 in1028 mb
POP 4% *
Humidity 34%
Thu, 17th
Clayton MO Weather - Thursday, Sep 17, 2026 - Partly Cloudy
Hi: 78°F 26°C
Lo: 56°F 13°C
Sunrise 06:44 AM
Sunset 07:06 PM
Wind E 6 mph10 km/h
Dew Point 37°F3°C
uv Index 6
Barometric Pressure 30.36 in1028 mb
POP 5% *
Humidity 30%
Fri, 18th
Clayton MO Weather - Friday, Sep 18, 2026 - Overcast
Hi: 90°F 32°C
Lo: 66°F 19°C
Sunrise 06:45 AM
Sunset 07:05 PM
Wind S 7 mph12 km/h
Dew Point 42°F6°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 7% *
Humidity 27%
Sat, 19th
Clayton MO Weather - Saturday, Sep 19, 2026 - Patchy Rain Nearby
Hi: 78°F 25°C
Lo: 57°F 14°C
Sunrise 06:46 AM
Sunset 07:03 PM
Wind SE 10 mph16 km/h
Dew Point 53°F12°C
uv Index 3
Barometric Pressure 30.21 in1023 mb
POP 63% *
Humidity 88%
Sun, 20th
Clayton MO Weather - Sunday, Sep 20, 2026 - Partly Cloudy
Hi: 72°F 22°C
Lo: 50°F 10°C
Sunrise 06:47 AM
Sunset 07:01 PM
Wind E 7 mph12 km/h
Dew Point 37°F3°C
uv Index 5
Barometric Pressure 30.21 in1023 mb
POP 2% *
Humidity 35%
Mon, 21st
Clayton MO Weather - Monday, Sep 21, 2026 - Sunny
Hi: 77°F 25°C
Lo: 55°F 13°C
Sunrise 06:48 AM
Sunset 07:00 PM
Wind E 4 mph7 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 0% *
Humidity 28%
* POP = Probability of Precipitation. Data for 12:00 PM.