Yankton climate

Yankton Weather in August

NOAA 1991-2020 normals for Yankton 2 E, 2.9 km from Yankton

Average highs run from 87°F on August 1 to 82°F on August 31, and lows from 64°F to 58°F. Normal precipitation for the month is 3.26 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 Yankton, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
62°F
Precipitation
3.26 in
Record high
112°FAug 4, 1934
Record low
41°FAug 30, 1935
Chance of a freeze
0%
Days of 90°F or more
7.9
Daylight
14 h 29 min to 13 h 13 min
Cloud cover
49%
Humidity
62%
Dew point
59°F
Wind
9.4 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 187°F64°F101°F 193651°F 193327%0%
Aug 287°F64°F105°F 193649°F 193327%0%
Aug 387°F64°F107°F 194745°F 193327%0%
Aug 487°F64°F112°F 193450°F 202027%0%
Aug 586°F64°F104°F 193451°F 202627%0%
Aug 686°F63°F101°F 193453°F 193327%0%
Aug 786°F63°F98°F 193755°F 194527%0%
Aug 886°F63°F102°F 193652°F 202627%0%
Aug 986°F63°F109°F 194748°F 202427%0%
Aug 1086°F63°F106°F 194749°F 202427%0%
Aug 1186°F63°F100°F 193654°F 201727%0%
Aug 1286°F63°F99°F 193650°F 193327%0%
Aug 1385°F62°F104°F 193854°F 193327%0%
Aug 1485°F62°F98°F 193746°F 193327%0%
Aug 1585°F62°F108°F 193751°F 202327%0%
Aug 1685°F62°F100°F 193752°F 193327%0%
Aug 1785°F62°F107°F 193644°F 194327%0%
Aug 1885°F61°F103°F 193446°F 194326%0%
Aug 1985°F61°F100°F 194249°F 194326%0%
Aug 2084°F61°F102°F 194750°F 194026%0%
Aug 2184°F61°F100°F 194748°F 193926%0%
Aug 2284°F61°F106°F 193851°F 193926%0%
Aug 2384°F60°F102°F 193649°F 194226%0%
Aug 2484°F60°F111°F 193643°F 193426%0%
Aug 2583°F60°F95°F 202049°F 193426%0%
Aug 2683°F60°F94°F 202048°F 194726%0%
Aug 2783°F59°F92°F 194548°F 194126%0%
Aug 2883°F59°F96°F 193743°F 193526%0%
Aug 2983°F59°F100°F 194742°F 194626%0%
Aug 3082°F58°F99°F 194141°F 193525%0%
Aug 3182°F58°F95°F 193645°F 193525%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Yankton, 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 8:50 PM
August 31
sunrise 6:53 AM, sunset 8:06 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094911 (Yankton 2 E), public domain. Records: NOAA GHCN-Daily, station USW00094911, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.