Winterset climate

Winterset Weather in August

NOAA 1991-2020 normals for Winterset 1S, 1.8 km from Winterset

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 62°F to 56°F. Normal precipitation for the month is 3.62 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 Winterset, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
59°F
Precipitation
3.62 in
Record high
108°FAug 16, 1983
Record low
40°FAug 20, 1950
Chance of a freeze
0%
Days of 90°F or more
4.5
Daylight
14 h 22 min to 13 h 08 min
Cloud cover
51%
Humidity
70%
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°F62°F101°F 198755°F 196830%0%
Aug 284°F62°F100°F 196453°F 195030%0%
Aug 384°F62°F102°F 194754°F 198630%0%
Aug 484°F62°F102°F 195451°F 197830%0%
Aug 584°F61°F100°F 194751°F 195730%0%
Aug 684°F61°F99°F 202253°F 198930%0%
Aug 783°F61°F100°F 198848°F 198930%0%
Aug 883°F61°F97°F 198853°F 197630%0%
Aug 983°F61°F100°F 194750°F 197230%0%
Aug 1083°F61°F101°F 198352°F 196729%0%
Aug 1183°F61°F98°F 194750°F 198629%0%
Aug 1283°F60°F99°F 197548°F 196429%0%
Aug 1383°F60°F99°F 196548°F 196429%0%
Aug 1483°F60°F104°F 198851°F 199429%0%
Aug 1583°F60°F104°F 198850°F 199228%0%
Aug 1683°F60°F108°F 198352°F 199228%0%
Aug 1782°F60°F104°F 198852°F 201228%0%
Aug 1882°F59°F104°F 198350°F 197728%0%
Aug 1982°F59°F101°F 198349°F 195027%0%
Aug 2082°F59°F100°F 194740°F 195027%0%
Aug 2182°F59°F99°F 194747°F 195027%0%
Aug 2282°F58°F98°F 194752°F 195127%0%
Aug 2382°F58°F100°F 202348°F 196627%0%
Aug 2481°F58°F100°F 200350°F 196626%0%
Aug 2581°F58°F101°F 198345°F 195826%0%
Aug 2681°F57°F104°F 198347°F 202526%0%
Aug 2781°F57°F99°F 195545°F 198626%0%
Aug 2881°F57°F100°F 198441°F 198626%0%
Aug 2980°F57°F99°F 198343°F 194626%0%
Aug 3080°F56°F104°F 201349°F 194626%0%
Aug 3180°F56°F97°F 200045°F 196726%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Winterset, 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 6:11 AM, sunset 8:33 PM
August 31
sunrise 6:42 AM, sunset 7:50 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00139132 (Winterset 1S), public domain. Records: NOAA GHCN-Daily, station USW00014933, 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.