Glen Ellyn climate

Glen Ellyn Weather in August

NOAA 1991-2020 normals for Wheaton 3 Se, 7.3 km from Glen Ellyn

Average highs run from 84°F on August 1 to 83°F on August 31, and lows from 63°F to 60°F. Normal precipitation for the month is 4.40 in over about 9 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 Glen Ellyn, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
62°F
Precipitation
4.40 in
Record high
102°FAug 1, 2006
Record low
38°FAug 31, 2009
Chance of a freeze
0%
Days of 90°F or more
7.0
Daylight
14 h 24 min to 13 h 10 min
Cloud cover
64%
Humidity
73%
Dew point
62°F
Wind
8.1 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 184°F63°F102°F 200652°F 199830%0%
Aug 284°F63°F101°F 200647°F 200930%0%
Aug 384°F63°F99°F 200654°F 199630%0%
Aug 484°F63°F96°F 200250°F 200030%0%
Aug 584°F63°F94°F 200147°F 199430%0%
Aug 684°F63°F93°F 200143°F 199430%0%
Aug 784°F63°F96°F 200147°F 199430%0%
Aug 884°F63°F97°F 200150°F 200630%0%
Aug 984°F63°F99°F 200548°F 199930%0%
Aug 1084°F63°F98°F 200151°F 199930%0%
Aug 1184°F63°F92°F 200251°F 200830%0%
Aug 1284°F63°F97°F 200246°F 200430%0%
Aug 1384°F63°F98°F 199544°F 200430%0%
Aug 1484°F63°F97°F 199547°F 200429%0%
Aug 1584°F63°F95°F 199542°F 200429%0%
Aug 1684°F63°F92°F 200946°F 200429%0%
Aug 1784°F62°F94°F 199549°F 200429%0%
Aug 1884°F62°F93°F 199551°F 200229%0%
Aug 1984°F62°F91°F 199550°F 200929%0%
Aug 2084°F62°F92°F 200550°F 200128%0%
Aug 2184°F62°F94°F 201046°F 199928%0%
Aug 2284°F62°F98°F 200346°F 200428%0%
Aug 2384°F62°F93°F 200745°F 199728%0%
Aug 2484°F62°F96°F 199847°F 200928%0%
Aug 2583°F61°F92°F 201149°F 200927%0%
Aug 2683°F61°F97°F 200351°F 200827%0%
Aug 2783°F61°F97°F 200349°F 200827%0%
Aug 2883°F61°F91°F 199552°F 200827%0%
Aug 2983°F60°F95°F 200349°F 199427%0%
Aug 3083°F60°F95°F 201044°F 200927%0%
Aug 3183°F60°F93°F 199538°F 200927%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Glen Ellyn, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 5:46 AM, sunset 8:10 PM
August 31
sunrise 6:17 AM, sunset 7:27 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00119221 (Wheaton 3 Se), public domain. Records: NOAA GHCN-Daily, station USC00118324, 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.