Saint Charles climate

Saint Charles Weather in August

NOAA 1991-2020 normals for St Charles Elm Pt, 4.4 km from Saint Charles

Average highs run from 88°F on August 1 to 85°F on August 31, and lows from 68°F to 63°F. Normal precipitation for the month is 4.07 in over about 7 wet days.

August day by day

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

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

August at a glance

Average high
87°F
Average low
66°F
Precipitation
4.07 in
Record high
107°FAug 29, 1984
Record low
47°FAug 29, 1965
Chance of a freeze
0%
Days of 90°F or more
10.0
Daylight
14 h 10 min to 13 h 04 min
Cloud cover
48%
Humidity
70%
Dew point
65°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
Aug 188°F68°F104°F 198057°F 196225%0%
Aug 288°F68°F103°F 198758°F 197325%0%
Aug 388°F68°F104°F 196454°F 195025%0%
Aug 488°F68°F102°F 194755°F 197425%0%
Aug 588°F68°F102°F 194756°F 194824%0%
Aug 688°F68°F104°F 194755°F 194824%0%
Aug 788°F68°F100°F 198055°F 197224%0%
Aug 888°F67°F102°F 198053°F 197624%0%
Aug 988°F67°F105°F 198055°F 197224%0%
Aug 1088°F67°F101°F 194154°F 197224%0%
Aug 1188°F67°F102°F 194156°F 196724%0%
Aug 1287°F67°F102°F 200751°F 196724%0%
Aug 1387°F67°F100°F 201050°F 196424%0%
Aug 1487°F66°F103°F 200756°F 196724%0%
Aug 1587°F66°F105°F 200751°F 199224%0%
Aug 1687°F66°F102°F 198856°F 196424%0%
Aug 1787°F66°F103°F 198858°F 194324%0%
Aug 1887°F66°F103°F 195454°F 196324%0%
Aug 1987°F66°F105°F 196255°F 195324%0%
Aug 2087°F65°F104°F 196252°F 195024%0%
Aug 2186°F65°F104°F 200350°F 194023%0%
Aug 2286°F65°F100°F 193855°F 195023%0%
Aug 2386°F65°F102°F 193854°F 196623%0%
Aug 2486°F64°F103°F 194751°F 194223%0%
Aug 2586°F64°F104°F 202352°F 195823%0%
Aug 2686°F64°F101°F 194355°F 194523%0%
Aug 2786°F64°F102°F 202451°F 196823%0%
Aug 2885°F63°F101°F 199048°F 198623%0%
Aug 2985°F63°F107°F 198447°F 196523%0%
Aug 3085°F63°F102°F 201351°F 194623%0%
Aug 3185°F63°F103°F 201149°F 196723%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Saint Charles, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:03 AM, sunset 8:13 PM
August 31
sunrise 6:30 AM, sunset 7:34 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00237397 (St Charles Elm Pt), 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.