As of 15:05 CDT

Weather in Clayton, MO

90°Current weather

Clayton, Saturday, 8 August, 15:05

Clear. Feels like 100°. High 90°, low 70°.

Pressure30.00 inHg
Wind3 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°

Monthly outlook for Clayton, MO: average high 89.3°, average low 71.5°. That is 1.8° above the climate normal for August. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (105.2°), the coolest 15 August (60.4°).

89.3°/71.5°
Average high / low
+1.8°
Above normal
4 / 5
Wet days / normal
2.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August91.4°85.9°+3°
18 August – 27 August85.7°86.1°-0.2°
28 August – 6 Septemberat normal83.9°

August records over 66 years

102.9°15 August 2007All-time high
49.6°29 August 1986All-time low
Sun, 0998° / 74°0Overcast
98 °Overcast

Clayton, Sunday, 9 August

Overcast. High 98°, low 74°.

Pressure29.94 inHg
Wind11.5 mph S
Humidity46%
Visibility6.2 mi
Dew point70°
Mon, 10103° / 78°0Clear
103 °Clear

Clayton, Monday, 10 August

Clear. High 103°, low 78°.

Pressure29.94 inHg
Wind11.3 mph SW
Humidity37%
Visibility6.2 mi
Dew point67°
Tue, 11105° / 80°0.02Light rain
105 °Light rain

Clayton, Tuesday, 11 August

Light rain. High 105°, low 80°.

Pressure29.88 inHg
Wind5.2 mph W
Humidity35%
Visibility6.2 mi
Dew point65°
Wed, 1292° / 79°0.01Light rain
92 °Light rain

Clayton, Wednesday, 12 August

Light rain. High 92°, low 79°.

Pressure29.83 inHg
Wind10.2 mph W
Humidity44%
Visibility6.2 mi
Dew point67°
Thu, 1385° / 71°0.53Rain
85 °Rain

Clayton, Thursday, 13 August

Rain. High 85°, low 71°.

Pressure29.85 inHg
Wind8.5 mph SE
Humidity65%
Visibility
Dew point70°
Fri, 1479° / 65°0.02Light rain
79 °Light rain

Clayton, Friday, 14 August

Light rain. High 79°, low 65°.

Pressure30.15 inHg
Wind10.2 mph NE
Humidity42%
Visibility
Dew point52°
Sat, 1582° / 60°0Overcast
82 °Overcast

Clayton, Saturday, 15 August

Overcast. High 82°, low 60°.

Pressure30.27 inHg
Wind8.8 mph E
Humidity39%
Visibility
Dew point49°
Sun, 1681° / 65°0.08Light rain
81 °Light rain

Clayton, Sunday, 16 August

Light rain. High 81°, low 65°.

Pressure30.18 inHg
Wind10.8 mph S
Humidity74%
Visibility
Dew point63°
Mon, 1798° / 72°0.3Rain
98 °Rain

Clayton, Monday, 17 August

Rain. High 98°, low 72°.

Pressure29.91 inHg
Wind13.4 mph S
Humidity43%
Visibility
Dew point66°
Tue, 1890° / 76°0Overcast
90 °Overcast

Clayton, Tuesday, 18 August

Overcast. High 90°, low 76°.

Pressure29.97 inHg
Wind8.6 mph NE
Humidity52%
Visibility
Dew point68°
Wed, 1997° / 75°0Partly cloudy
97 °Partly cloudy

Clayton, Wednesday, 19 August

Partly cloudy. High 97°, low 75°.

Pressure29.88 inHg
Wind7 mph SE
Humidity48%
Visibility
Dew point68°
Thu, 2087° / 74°1.07Heavy rain
87 °Heavy rain

Clayton, Thursday, 20 August

Heavy rain. High 87°, low 74°.

Pressure29.88 inHg
Wind10.2 mph NW
Humidity62%
Visibility
Dew point70°
Fri, 2181° / 71°0.04Light rain
81 °Light rain

Clayton, Friday, 21 August

Light rain. High 81°, low 71°.

Pressure29.91 inHg
Wind8.3 mph NE
Humidity68%
Visibility
Dew point67°
Sat, 2286° / 69°0Overcast
86 °Overcast

Clayton, Saturday, 22 August

Overcast. High 86°, low 69°.

Pressure29.94 inHg
Wind4.9 mph NE
Humidity44%
Visibility
Dew point59°
Sun, 2372° / 63°0.03Light rain
72 °Light rain

Clayton, Sunday, 23 August

Light rain. High 72°, low 63°.

Pressure30.12 inHg
Wind11.2 mph NE
Humidity57%
Visibility
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 68°0.09Climate normal
86 °Climate normal

Clayton, Monday, 24 August

Climate normal for this date — 60-year average.

Average high86°
Average low68°
Average precipitation0.09 in
Chance of precipitation30%
Record high99° (2023)
Record low57° (2015)
Tue, 2587° / 68°0.07Climate normal
87 °Climate normal

Clayton, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high87°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high100° (2023)
Record low56° (2015)
Wed, 2687° / 69°0.13Climate normal
87 °Climate normal

Clayton, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high87°
Average low69°
Average precipitation0.13 in
Chance of precipitation33%
Record high99° (1983)
Record low57° (2025)
Thu, 2786° / 69°0.13Climate normal
86 °Climate normal

Clayton, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high86°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (1983)
Record low56° (2015)
Fri, 2886° / 69°0.09Climate normal
86 °Climate normal

Clayton, Friday, 28 August

Climate normal for this date — 60-year average.

Average high86°
Average low69°
Average precipitation0.09 in
Chance of precipitation27%
Record high97° (1990)
Record low55° (1967)
Sat, 2985° / 68°0.07Climate normal
85 °Climate normal

Clayton, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1984)
Record low50° (1986)
Sun, 3084° / 68°0.13Climate normal
84 °Climate normal

Clayton, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (2013)
Record low52° (1986)
Mon, 3184° / 68°0.11Climate normal
84 °Climate normal

Clayton, Monday, 31 August

Climate normal for this date — 60-year average.

Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high101° (2013)
Record low56° (1967)
Tue, 0184° / 67°0.11Climate normal
84 °Climate normal

Clayton, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation33%
Record high99° (2011)
Record low52° (1967)
Wed, 0284° / 67°0.12Climate normal
84 °Climate normal

Clayton, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation35%
Record high98° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.1Climate normal
83 °Climate normal

Clayton, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation25%
Record high96° (2011)
Record low51° (1974)
Fri, 0483° / 66°0.12Climate normal
83 °Climate normal

Clayton, Friday, 4 September

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation28%
Record high97° (1960)
Record low51° (1974)
Sat, 0583° / 65°0.04Climate normal
83 °Climate normal

Clayton, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation15%
Record high97° (1998)
Record low51° (1974)
Sun, 0683° / 65°0.04Climate normal
83 °Climate normal

Clayton, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation23%
Record high98° (1990)
Record low52° (1988)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Clayton, MO are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Clayton, MO since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.