Clayton climate

Clayton Weather in July

NOAA 1991-2020 normals for St Louis Sci Ctr, 4.8 km from Clayton

Average highs run from 89°F on July 1 to 90°F on July 31, and lows from 71°F to 72°F. Normal precipitation for the month is 4.21 in.

July day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Clayton, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
90°F
Average low
72°F
Precipitation
4.21 in
Record high
115°FJul 14, 1954
Record low
51°FJul 6, 1972
Chance of a freeze
0%
Days of 90°F or more
15.9
Daylight
14 h 49 min to 14 h 11 min
Cloud cover
50%
Humidity
72%
Dew point
67°F
Wind
4.5 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Jul 189°F71°F105°F 198058°F 19480%
Jul 289°F71°F100°F 201256°F 19590%
Jul 389°F71°F101°F 201255°F 19450%
Jul 489°F71°F105°F 201252°F 19400%
Jul 589°F71°F105°F 201253°F 19720%
Jul 690°F71°F106°F 201251°F 19720%
Jul 790°F71°F107°F 201254°F 19830%
Jul 890°F71°F101°F 198058°F 19610%
Jul 990°F72°F102°F 198054°F 19610%
Jul 1090°F72°F104°F 196654°F 19610%
Jul 1190°F72°F106°F 196655°F 19630%
Jul 1290°F72°F110°F 195456°F 19750%
Jul 1390°F72°F106°F 196652°F 19750%
Jul 1490°F72°F115°F 195451°F 19670%
Jul 1590°F72°F107°F 198056°F 19670%
Jul 1690°F72°F103°F 202257°F 19670%
Jul 1790°F72°F103°F 201257°F 19760%
Jul 1890°F72°F112°F 195457°F 19760%
Jul 1990°F72°F105°F 195459°F 19840%
Jul 2090°F72°F105°F 195459°F 19700%
Jul 2190°F72°F104°F 201754°F 19440%
Jul 2290°F72°F108°F 201755°F 19470%
Jul 2390°F72°F106°F 201252°F 19470%
Jul 2490°F72°F107°F 201260°F 19470%
Jul 2590°F72°F108°F 201261°F 20000%
Jul 2690°F72°F104°F 195255°F 19620%
Jul 2790°F72°F103°F 195251°F 19620%
Jul 2890°F72°F102°F 194156°F 20130%
Jul 2990°F72°F103°F 194154°F 19710%
Jul 3090°F72°F104°F 195357°F 19710%
Jul 3190°F72°F103°F 197053°F 19710%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Clayton, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

July 1
sunrise 5:41 AM, sunset 8:30 PM
July 31
sunrise 6:02 AM, sunset 8:13 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00237452 (St Louis Sci Ctr), public domain. Records: NOAA GHCN-Daily, station USW00013994, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.