Dexter climate

Dexter Weather in August

NOAA 1991-2020 normals for Winterset 1S, 28.5 km from Dexter

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 Dexter, 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
111°FAug 8, 1934
Record low
34°FAug 25, 1934
Chance of a freeze
0%
Days of 90°F or more
4.5
Daylight
14 h 22 min to 13 h 09 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°F104°F 198850°F 191130%0%
Aug 284°F62°F101°F 193047°F 192530%0%
Aug 384°F62°F107°F 193044°F 192730%0%
Aug 484°F62°F107°F 191845°F 197830%0%
Aug 584°F61°F110°F 193445°F 195730%0%
Aug 684°F61°F103°F 191848°F 199430%0%
Aug 783°F61°F98°F 202245°F 198930%0%
Aug 883°F61°F111°F 193444°F 190430%0%
Aug 983°F61°F102°F 191341°F 192730%0%
Aug 1083°F61°F101°F 191846°F 192729%0%
Aug 1183°F61°F99°F 194142°F 193029%0%
Aug 1283°F60°F102°F 193642°F 193129%0%
Aug 1383°F60°F98°F 196542°F 193129%0%
Aug 1483°F60°F100°F 193445°F 200429%0%
Aug 1583°F60°F104°F 198839°F 192928%0%
Aug 1683°F60°F106°F 198848°F 199428%0%
Aug 1782°F60°F105°F 198847°F 195328%0%
Aug 1882°F59°F110°F 193643°F 193328%0%
Aug 1982°F59°F99°F 198345°F 196727%0%
Aug 2082°F59°F98°F 194736°F 195027%0%
Aug 2182°F59°F102°F 193644°F 192527%0%
Aug 2282°F58°F99°F 191442°F 192327%0%
Aug 2382°F58°F97°F 191443°F 198427%0%
Aug 2481°F58°F106°F 193642°F 193426%0%
Aug 2581°F58°F106°F 193634°F 193426%0%
Aug 2681°F57°F102°F 200343°F 193426%0%
Aug 2781°F57°F100°F 195541°F 197126%0%
Aug 2881°F57°F97°F 195535°F 193526%0%
Aug 2980°F57°F98°F 194838°F 194626%0%
Aug 3080°F56°F98°F 195337°F 191526%0%
Aug 3180°F56°F101°F 201339°F 191526%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dexter, 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 6:12 AM, sunset 8:34 PM
August 31
sunrise 6:42 AM, sunset 7:51 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 USC00136566, 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.