Brown County climate

Brown County Weather in August

NOAA 1991-2020 normals for Hiawatha 1 S, 2.9 km from Brown County

Average highs run from 88°F on August 1 to 83°F on August 31, and lows from 66°F to 59°F. Normal precipitation for the month is 3.86 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 Brown County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
86°F
Average low
63°F
Precipitation
3.86 in
Record high
104°FAug 2, 2011
Record low
44°FAug 17, 2012
Chance of a freeze
0%
Days of 90°F or more
8.0
Daylight
14 h 14 min to 13 h 06 min
Cloud cover
49%
Humidity
68%
Dew point
64°F
Wind
8.3 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°F66°F100°F 201251°F 201430%0%
Aug 288°F66°F104°F 201154°F 200930%0%
Aug 388°F66°F101°F 201152°F 202130%0%
Aug 488°F66°F99°F 201047°F 201730%0%
Aug 588°F66°F97°F 200852°F 201729%0%
Aug 688°F66°F96°F 200756°F 201229%0%
Aug 788°F65°F97°F 202257°F 201729%0%
Aug 887°F65°F100°F 201254°F 201729%0%
Aug 987°F65°F100°F 201254°F 201729%0%
Aug 1087°F65°F99°F 201055°F 202229%0%
Aug 1187°F65°F99°F 201050°F 201228%0%
Aug 1287°F65°F100°F 201053°F 201228%0%
Aug 1387°F64°F102°F 201050°F 201428%0%
Aug 1487°F64°F100°F 202254°F 201428%0%
Aug 1586°F64°F99°F 200754°F 201228%0%
Aug 1686°F64°F100°F 200755°F 201228%0%
Aug 1786°F63°F90°F 200744°F 201228%0%
Aug 1886°F63°F92°F 201644°F 201228%0%
Aug 1986°F63°F91°F 201644°F 201228%0%
Aug 2085°F63°F91°F 201048°F 201227%0%
Aug 2185°F62°F92°F 200748°F 201227%0%
Aug 2285°F62°F97°F 201351°F 201227%0%
Aug 2385°F62°F95°F 201250°F 201727%0%
Aug 2485°F62°F95°F 201245°F 201527%0%
Aug 2584°F61°F95°F 201447°F 201526%0%
Aug 2684°F61°F93°F 202053°F 201526%0%
Aug 2784°F61°F95°F 202154°F 200826%0%
Aug 2884°F60°F96°F 200756°F 201526%0%
Aug 2983°F60°F95°F 202053°F 200826%0%
Aug 3083°F60°F94°F 201249°F 200926%0%
Aug 3183°F59°F99°F 201346°F 200926%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Brown County, 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 6:21 AM, sunset 8:35 PM
August 31
sunrise 6:49 AM, sunset 7:55 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00143634 (Hiawatha 1 S), public domain. Records: NOAA GHCN-Daily, station USC00143634, 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.