As of 07:49 CDT

Clayton, MO weather in September

75°

Clayton, Sunday, 9 August, 07:49

Clear. Feels like 77°. High 96°, low 73°.

Pressure30.00 inHg

Wind2 mph S

Humidity93%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

In September, Clayton, MO averages a high of 79° and a low of 61.7°. About 3.3 inches of precipitation fall over the month (8 wet days). The record high is 98.8° (2011) and the record low 37.9° (1995). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	83.8°	67.5°	33%	98.8° (2011)	52° (1967)
2	83.7°	66.9°	35%	97.7° (2011)	53.1° (1974)
3	83.5°	66.6°	25%	96.1° (2011)	50.5° (1974)
4	82.6°	66°	28%	97.2° (1960)	51.4° (1974)
5	82.9°	65.3°	15%	96.8° (1998)	50.7° (1974)
6	82.9°	65.3°	23%	98.1° (1990)	52° (1988)
7	82.9°	64.9°	22%	96.3° (1960)	48.6° (1988)
8	81°	64.6°	42%	96.8° (1960)	49.1° (1986)
9	81°	64°	30%	97.5° (2013)	49.6° (2024)
10	81.1°	63°	20%	97° (2013)	49.6° (1969)
11	81°	63.1°	27%	94.1° (2013)	52.2° (1993)
12	80.8°	63.3°	32%	93.2° (1980)	52.2° (1968)
13	80.6°	63.1°	17%	93.7° (2025)	45.7° (2014)
14	79.7°	62.2°	28%	96.8° (1971)	45.3° (2014)
15	77.7°	61.7°	27%	91.9° (1991)	48.4° (1974)
16	77.4°	61.7°	27%	92.5° (1997)	48.2° (1984)
17	77.9°	61.3°	33%	90.3° (2025)	48.4° (1984)
18	79.2°	61.7°	33%	92.3° (2025)	46.8° (1981)
19	79.3°	61.7°	32%	92.8° (1997)	47.1° (1973)
20	78.3°	61.7°	35%	95.5° (2022)	42.6° (1991)
21	77.5°	60.4°	23%	92.8° (2022)	43.5° (1991)
22	75.4°	59.2°	28%	92.1° (2005)	41° (1983)
23	74.3°	57.6°	27%	91° (1961)	37.9° (1995)
24	74.7°	57.6°	33%	88.5° (2017)	41.5° (1989)
25	75.2°	57.9°	33%	88.7° (2017)	41.9° (1965)
26	75.2°	57.4°	27%	88.9° (2017)	42.3° (2000)
27	75°	56.8°	22%	90.7° (2021)	41.7° (1985)
28	74.7°	56.5°	17%	89.1° (1986)	41.7° (1984)
29	74.8°	55.9°	22%	88° (1971)	41.9° (2003)
30	75.4°	56.5°	15%	90.5° (2019)	41.2° (1984)