Saint Clair County climate

Saint Clair County Weather in July

NOAA 1991-2020 normals for Belleville Siu Rsch, 9 km from Saint Clair County

Average highs run from 90°F on July 1 to 90°F on July 31, and lows from 67°F to 68°F. Normal precipitation for the month is 4.03 in over about 7 wet days.

July day by day

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

Normal daily high and low temperature at Saint Clair County, 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
68°F
Precipitation
4.03 in
Record high
110°FJul 14, 1954
Record low
43°FJul 6, 1972
Chance of a freeze
0%
Days of 90°F or more
17.1
Daylight
14 h 49 min to 14 h 10 min
Cloud cover
50%
Humidity
74%
Dew point
68°F
Wind
6.0 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 190°F67°F104°F 198053°F 197627%0%
Jul 290°F67°F102°F 201253°F 201027%0%
Jul 390°F68°F100°F 195452°F 196727%0%
Jul 490°F68°F102°F 201247°F 196726%0%
Jul 590°F68°F104°F 201247°F 196726%0%
Jul 690°F68°F105°F 201243°F 197226%0%
Jul 790°F68°F105°F 201247°F 197226%0%
Jul 890°F68°F105°F 201250°F 198326%0%
Jul 990°F68°F106°F 196652°F 196325%0%
Jul 1090°F68°F108°F 196652°F 199625%0%
Jul 1190°F68°F100°F 198053°F 196325%0%
Jul 1290°F68°F106°F 195453°F 199925%0%
Jul 1390°F68°F104°F 196652°F 197525%0%
Jul 1490°F68°F110°F 195449°F 196725%0%
Jul 1590°F68°F104°F 198051°F 196725%0%
Jul 1690°F68°F105°F 198050°F 196724%0%
Jul 1790°F68°F102°F 198050°F 196724%0%
Jul 1890°F68°F104°F 201249°F 197624%0%
Jul 1990°F68°F105°F 201250°F 198424%0%
Jul 2090°F68°F104°F 195456°F 197924%0%
Jul 2190°F68°F101°F 198347°F 197024%0%
Jul 2290°F68°F102°F 198347°F 196624%0%
Jul 2390°F68°F102°F 201256°F 196624%0%
Jul 2490°F68°F105°F 201253°F 201424%0%
Jul 2590°F68°F105°F 201255°F 198024%0%
Jul 2690°F68°F105°F 195252°F 197724%0%
Jul 2790°F68°F104°F 195246°F 197124%0%
Jul 2890°F68°F103°F 195253°F 200424%0%
Jul 2990°F68°F103°F 199949°F 201424%0%
Jul 3090°F68°F102°F 199950°F 196524%0%
Jul 3190°F68°F102°F 198049°F 197124%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Saint Clair County, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

July 1
sunrise 5:39 AM, sunset 8:28 PM
July 31
sunrise 6:01 AM, sunset 8:11 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013802 (Belleville Siu Rsch), public domain. Records: NOAA GHCN-Daily, station USW00013802, 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.