Blue Grass climate

Blue Grass Weather in August

NOAA 1991-2020 normals for Rock Island L&d 15, 16.8 km from Blue Grass

Average highs run from 84°F on August 1 to 81°F on August 31, and lows from 65°F to 60°F. Normal precipitation for the month is 4.03 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 Blue Grass, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
63°F
Precipitation
4.03 in
Record high
100°FAug 24, 2023
Record low
42°FAug 13, 2004
Chance of a freeze
0%
Days of 90°F or more
4.3
Daylight
14 h 22 min to 13 h 10 min
Cloud cover
50%
Humidity
71%
Dew point
62°F
Wind
7.8 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 184°F65°F94°F 200653°F 199629%0%
Aug 283°F65°F94°F 201150°F 200929%0%
Aug 383°F65°F95°F 201251°F 202129%0%
Aug 483°F65°F92°F 200851°F 201729%0%
Aug 583°F64°F91°F 202450°F 202029%0%
Aug 683°F64°F91°F 199650°F 200429%0%
Aug 783°F64°F91°F 201251°F 200430%0%
Aug 883°F64°F91°F 200549°F 201730%0%
Aug 983°F64°F94°F 200551°F 202430%0%
Aug 1083°F64°F93°F 202151°F 202430%0%
Aug 1183°F64°F89°F 201047°F 200430%0%
Aug 1283°F64°F91°F 201047°F 200430%0%
Aug 1383°F64°F89°F 201842°F 200430%0%
Aug 1483°F64°F89°F 200043°F 200430%0%
Aug 1583°F64°F90°F 202543°F 200430%0%
Aug 1683°F63°F92°F 202549°F 201330%0%
Aug 1783°F63°F93°F 202549°F 201230%0%
Aug 1882°F63°F91°F 202545°F 201230%0%
Aug 1982°F63°F89°F 201150°F 202030%0%
Aug 2082°F63°F94°F 200350°F 201230%0%
Aug 2182°F63°F90°F 200346°F 201230%0%
Aug 2282°F63°F92°F 202348°F 202430%0%
Aug 2382°F62°F98°F 202349°F 199730%0%
Aug 2482°F62°F100°F 202350°F 200530%0%
Aug 2582°F62°F93°F 200348°F 202530%0%
Aug 2682°F62°F93°F 202044°F 202530%0%
Aug 2781°F61°F98°F 202448°F 202530%0%
Aug 2881°F61°F94°F 201353°F 202330%0%
Aug 2981°F61°F92°F 201050°F 200430%0%
Aug 3081°F61°F97°F 201346°F 200930%0%
Aug 3181°F60°F93°F 200043°F 200930%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Blue Grass, 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 5:58 AM, sunset 8:20 PM
August 31
sunrise 6:28 AM, sunset 7:38 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00117391 (Rock Island L&d 15), public domain. Records: NOAA GHCN-Daily, station USW00094982, 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.