Charleston climate

Charleston Weather in July

NOAA 1991-2020 normals for Cairo 3N, 19.9 km from Charleston

Average highs run from 88°F on July 1 to 89°F on July 31, and lows from 69°F to 69°F. Normal precipitation for the month is 4.10 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 Charleston, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
89°F
Average low
70°F
Precipitation
4.10 in
Record high
107°FJul 1, 2012
Record low
48°FJul 27, 1962
Chance of a freeze
0%
Days of 90°F or more
15.0
Daylight
14 h 39 min to 14 h 03 min
Cloud cover
50%
Humidity
75%
Dew point
70°F
Wind
6.5 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 188°F69°F107°F 201257°F 19880%
Jul 289°F69°F107°F 201256°F 19880%
Jul 389°F69°F104°F 201256°F 19590%
Jul 489°F69°F102°F 201154°F 19680%
Jul 589°F69°F105°F 201255°F 19680%
Jul 689°F70°F102°F 196952°F 19720%
Jul 789°F70°F101°F 195453°F 19720%
Jul 889°F70°F104°F 201258°F 19600%
Jul 989°F70°F104°F 198058°F 19610%
Jul 1089°F70°F103°F 198055°F 19630%
Jul 1189°F70°F104°F 196654°F 19630%
Jul 1289°F70°F104°F 196657°F 19530%
Jul 1389°F70°F106°F 196655°F 19640%
Jul 1489°F70°F106°F 196654°F 19670%
Jul 1589°F70°F106°F 196655°F 19670%
Jul 1689°F70°F107°F 198057°F 19670%
Jul 1789°F70°F107°F 198059°F 19670%
Jul 1889°F70°F100°F 195459°F 19760%
Jul 1989°F70°F101°F 201259°F 20090%
Jul 2089°F70°F104°F 198061°F 19710%
Jul 2189°F70°F100°F 198058°F 19710%
Jul 2289°F70°F104°F 201156°F 19700%
Jul 2389°F70°F101°F 201156°F 19700%
Jul 2489°F70°F101°F 201158°F 20000%
Jul 2589°F70°F100°F 197658°F 19570%
Jul 2689°F70°F102°F 201258°F 20040%
Jul 2789°F70°F103°F 195248°F 19620%
Jul 2889°F70°F104°F 195253°F 19620%
Jul 2989°F70°F103°F 201158°F 19940%
Jul 3089°F69°F101°F 199956°F 19650%
Jul 3189°F69°F103°F 199952°F 19710%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Charleston, 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 5:42 AM, sunset 8:21 PM
July 31
sunrise 6:02 AM, sunset 8:05 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093809 (Cairo 3N), public domain. Records: NOAA GHCN-Daily, station USC00237772, 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.