Rockford climate

Rockford Weather in August

NOAA 1991-2020 normals for Rockford 3 Ese, 4.6 km from Rockford

Average highs run from 88°F on August 1 to 86°F on August 31, and lows from 70°F to 67°F. Normal precipitation for the month is 5.07 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
87°F
Average low
69°F
Precipitation
5.07 in
Record high
105°FAug 11, 2007
Record low
53°FAug 14, 2004
Chance of a freeze
0%
Days of 90°F or more
12.2
Daylight
13 h 44 min to 12 h 52 min
Cloud cover
53%
Humidity
72%
Dew point
68°F
Wind
3.4 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°F70°F102°F 198658°F 199734%0%
Aug 288°F70°F101°F 201059°F 199734%0%
Aug 388°F70°F98°F 198762°F 198234%0%
Aug 488°F70°F98°F 198162°F 198533%0%
Aug 588°F69°F100°F 200661°F 198533%0%
Aug 688°F69°F98°F 198162°F 198533%0%
Aug 788°F69°F100°F 198059°F 200433%0%
Aug 888°F69°F102°F 200760°F 200433%0%
Aug 988°F69°F102°F 200758°F 197633%0%
Aug 1088°F69°F104°F 200760°F 198933%0%
Aug 1188°F69°F105°F 200760°F 198933%0%
Aug 1288°F69°F104°F 200760°F 198933%0%
Aug 1388°F69°F101°F 200757°F 200433%0%
Aug 1487°F69°F101°F 200753°F 200433%0%
Aug 1587°F69°F102°F 200754°F 200432%0%
Aug 1687°F69°F103°F 200758°F 200432%0%
Aug 1787°F69°F103°F 200759°F 198332%0%
Aug 1887°F69°F102°F 199561°F 199232%0%
Aug 1987°F69°F102°F 200059°F 197632%0%
Aug 2087°F69°F100°F 199561°F 197631%0%
Aug 2187°F69°F100°F 198358°F 199131%0%
Aug 2287°F68°F102°F 198359°F 199131%0%
Aug 2387°F68°F104°F 200758°F 199731%0%
Aug 2487°F68°F101°F 200758°F 199730%0%
Aug 2587°F68°F101°F 198355°F 198430%0%
Aug 2686°F68°F101°F 198357°F 201530%0%
Aug 2786°F68°F100°F 201157°F 202529%0%
Aug 2886°F68°F99°F 199057°F 202529%0%
Aug 2986°F68°F100°F 199054°F 199229%0%
Aug 3086°F67°F98°F 199855°F 199228%0%
Aug 3186°F67°F97°F 199856°F 199228%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 (CDT).

August 1
sunrise 5:59 AM, sunset 7:43 PM
August 31
sunrise 6:19 AM, sunset 7:11 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00017020 (Rockford 3 Ese), public domain. Records: NOAA GHCN-Daily, station USC00010160, 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.