Rockford climate

Rockford Weather in August

NOAA 1991-2020 normals for Knoxville Mcghee Tyson AP, 4.2 km from Rockford

Average highs run from 88°F on August 1 to 87°F on August 31, and lows from 69°F to 66°F. Normal precipitation for the month is 3.63 in over about 10 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 Rockford, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
88°F
Average low
68°F
Precipitation
3.63 in
Record high
102°FAug 23, 2007
Record low
49°FAug 31, 1946
Chance of a freeze
0%
Days of 90°F or more
11.2
Daylight
13 h 56 min to 12 h 57 min
Cloud cover
55%
Humidity
69%
Dew point
64°F
Wind
3.8 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°F69°F97°F 193559°F 191435%0%
Aug 288°F69°F97°F 194258°F 192535%0%
Aug 388°F69°F99°F 201158°F 197635%0%
Aug 488°F69°F99°F 193056°F 195035%0%
Aug 588°F69°F101°F 193057°F 192935%0%
Aug 688°F69°F99°F 193056°F 201735%0%
Aug 788°F68°F101°F 193554°F 200434%0%
Aug 888°F68°F101°F 193053°F 198934%0%
Aug 988°F68°F99°F 193056°F 198934%0%
Aug 1088°F68°F100°F 198058°F 197634%0%
Aug 1188°F68°F97°F 192557°F 196734%0%
Aug 1288°F68°F100°F 193557°F 193134%0%
Aug 1388°F68°F100°F 192553°F 196433%0%
Aug 1488°F68°F98°F 199558°F 196733%0%
Aug 1588°F68°F99°F 199556°F 196333%0%
Aug 1688°F68°F101°F 200757°F 199233%0%
Aug 1788°F68°F101°F 198859°F 197932%0%
Aug 1888°F68°F101°F 198859°F 194332%0%
Aug 1988°F67°F98°F 193657°F 194332%0%
Aug 2088°F67°F99°F 193656°F 194331%0%
Aug 2188°F67°F101°F 198358°F 193031%0%
Aug 2288°F67°F99°F 196853°F 195630%0%
Aug 2388°F67°F102°F 200754°F 193030%0%
Aug 2487°F67°F100°F 200754°F 199730%0%
Aug 2587°F67°F99°F 194354°F 192329%0%
Aug 2687°F66°F97°F 198753°F 191729%0%
Aug 2787°F66°F101°F 194353°F 202529%0%
Aug 2887°F66°F98°F 193654°F 192728%0%
Aug 2987°F66°F102°F 194853°F 196828%0%
Aug 3087°F66°F97°F 202454°F 199228%0%
Aug 3187°F66°F99°F 193249°F 194628%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Rockford, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:44 AM, sunset 8:40 PM
August 31
sunrise 7:07 AM, sunset 8:04 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013891 (Knoxville Mcghee Tyson AP), public domain. Records: NOAA GHCN-Daily, station USW00013891, 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.