Jersey County climate

Jersey County Weather in August

NOAA 1991-2020 normals for Jerseyville 2 Sw, 2.2 km from Jersey County

Average highs run from 86°F on August 1 to 83°F on August 31, and lows from 65°F to 60°F. Normal precipitation for the month is 3.72 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 Jersey County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
63°F
Precipitation
3.72 in
Record high
103°FAug 12, 2007
Record low
48°FAug 13, 2004
Chance of a freeze
0%
Days of 90°F or more
8.1
Daylight
14 h 11 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 186°F65°F102°F 200255°F 201824%0%
Aug 286°F65°F102°F 201157°F 201424%0%
Aug 386°F65°F101°F 201057°F 200924%0%
Aug 486°F65°F100°F 201058°F 201724%0%
Aug 586°F65°F99°F 200254°F 201724%0%
Aug 686°F65°F99°F 201852°F 200424%0%
Aug 786°F65°F100°F 200754°F 200424%0%
Aug 886°F65°F100°F 200756°F 199724%0%
Aug 986°F65°F98°F 200156°F 201724%0%
Aug 1086°F64°F100°F 200554°F 202424%0%
Aug 1186°F64°F98°F 200754°F 200424%0%
Aug 1286°F64°F103°F 200749°F 200424%0%
Aug 1386°F64°F100°F 201048°F 200424%0%
Aug 1486°F64°F101°F 200748°F 200424%0%
Aug 1586°F64°F103°F 200748°F 200424%0%
Aug 1685°F64°F97°F 199751°F 200424%0%
Aug 1785°F63°F100°F 200056°F 200124%0%
Aug 1885°F63°F98°F 202554°F 201224%0%
Aug 1985°F63°F97°F 200555°F 200824%0%
Aug 2085°F63°F96°F 200353°F 201224%0%
Aug 2185°F63°F101°F 200355°F 199724%0%
Aug 2285°F63°F98°F 200151°F 202423%0%
Aug 2385°F62°F98°F 200752°F 199723%0%
Aug 2485°F62°F100°F 202353°F 201523%0%
Aug 2584°F62°F101°F 202353°F 201523%0%
Aug 2684°F62°F99°F 200349°F 202523%0%
Aug 2784°F61°F100°F 202450°F 202523%0%
Aug 2884°F61°F99°F 200754°F 202523%0%
Aug 2984°F61°F97°F 200056°F 200423%0%
Aug 3084°F61°F99°F 201354°F 200423%0%
Aug 3183°F60°F101°F 201153°F 202323%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Jersey County, 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 6:02 AM, sunset 8:13 PM
August 31
sunrise 6:29 AM, sunset 7:33 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00114489 (Jerseyville 2 Sw), public domain. Records: NOAA GHCN-Daily, station USW00053904, 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.