Clayton, MO Climate

Clayton, MO enjoys a humid subtropical climate characterized by hot, humid summers and mild winters. Summers in Clayton usually reach an average high temperature of 88°F (31°C), while the average low temperature drops to about 66°F (19°C). Winters in Clayton are typically mild, with an average high temperature around 44°F (7°C) and an average low temperature of 28°F (-2°C). The area typically receives around 39 inches of precipitation annually, with most of it falling during the summer months.

Clayton, Missouri gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Clayton averages 16 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Clayton. The US average is 205 sunny days.

Clayton gets some kind of precipitation, on average, 105 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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Weather Highlights

Summer High: the July high is around 89 degrees
Winter Low: the January low is 23
Rain: averages 43 inches of rain a year
Snow: averages 16 inches of snow a year

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Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Clayton is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

7.3 Summer - 5.6 Winter

September, May and October are the most pleasant months in Clayton, while January and December are the least comfortable months.