Winona climate

Winona Weather in August

NOAA 1991-2020 normals for Winona 3 Sw, 6.5 km from Winona

Average highs run from 89°F on August 1 to 84°F on August 31, and lows from 64°F to 58°F. Normal precipitation for the month is 3.81 in.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Winona, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
87°F
Average low
62°F
Precipitation
3.81 in
Record high
108°FAug 3, 2011
Record low
47°FAug 12, 2004
Chance of a freeze
0%
Days of 90°F or more
9.6
Daylight
14 h 01 min to 13 h 00 min
Cloud cover
48%
Humidity
69%
Dew point
65°F
Wind
3.1 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 189°F64°F100°F 201257°F 19970%
Aug 289°F64°F104°F 201157°F 20250%
Aug 389°F64°F108°F 201153°F 20250%
Aug 489°F64°F102°F 201055°F 20170%
Aug 589°F64°F97°F 200853°F 20170%
Aug 689°F64°F99°F 201152°F 19970%
Aug 789°F64°F99°F 199950°F 20040%
Aug 889°F63°F98°F 201050°F 20040%
Aug 989°F63°F99°F 201055°F 20020%
Aug 1089°F63°F102°F 200759°F 20240%
Aug 1188°F63°F103°F 201055°F 20040%
Aug 1288°F63°F104°F 200747°F 20040%
Aug 1388°F63°F101°F 200747°F 20040%
Aug 1488°F62°F99°F 200748°F 20040%
Aug 1588°F62°F102°F 200750°F 20130%
Aug 1688°F62°F101°F 200751°F 20040%
Aug 1787°F62°F102°F 199954°F 20080%
Aug 1887°F61°F102°F 199952°F 20120%
Aug 1987°F61°F100°F 201053°F 20120%
Aug 2087°F61°F102°F 202353°F 20150%
Aug 2187°F61°F101°F 201055°F 19980%
Aug 2286°F60°F98°F 200054°F 19990%
Aug 2386°F60°F99°F 200052°F 20090%
Aug 2486°F60°F99°F 202352°F 20090%
Aug 2586°F60°F99°F 202353°F 20090%
Aug 2685°F59°F98°F 200053°F 20250%
Aug 2785°F59°F99°F 200048°F 20250%
Aug 2885°F59°F102°F 200053°F 20250%
Aug 2985°F58°F101°F 200047°F 20250%
Aug 3084°F58°F103°F 200051°F 20040%
Aug 3184°F58°F98°F 202650°F 19990%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Winona, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:11 AM, sunset 8:12 PM
August 31
sunrise 6:35 AM, sunset 7:35 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00239056 (Winona 3 Sw), public domain. Records: NOAA GHCN-Daily, station USW00053901, 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.