Okoboji climate

Okoboji Weather in August

NOAA 1991-2020 normals for Milford 4 Nw, 2.9 km from Okoboji

Average highs run from 82°F on August 1 to 78°F on August 31, and lows from 62°F to 57°F. Normal precipitation for the month is 3.47 in over about 8 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 Okoboji, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
80°F
Average low
60°F
Precipitation
3.47 in
Record high
100°FAug 2, 2022
Record low
36°FAug 21, 2004
Chance of a freeze
0%
Days of 90°F or more
1.9
Daylight
14 h 32 min to 13 h 13 min
Cloud cover
51%
Humidity
69%
Dew point
59°F
Wind
8.9 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 182°F62°F96°F 201152°F 201325%0%
Aug 282°F62°F100°F 202246°F 200225%0%
Aug 382°F62°F95°F 200846°F 202025%0%
Aug 482°F62°F92°F 200147°F 201725%0%
Aug 581°F62°F93°F 200148°F 201725%0%
Aug 681°F62°F92°F 200147°F 202625%0%
Aug 781°F62°F94°F 200151°F 202425%0%
Aug 881°F61°F93°F 200547°F 202625%0%
Aug 981°F61°F96°F 200550°F 202425%0%
Aug 1081°F61°F93°F 201646°F 202425%0%
Aug 1181°F61°F91°F 200745°F 200425%0%
Aug 1281°F61°F92°F 200044°F 200425%0%
Aug 1380°F61°F92°F 202041°F 200425%0%
Aug 1480°F61°F91°F 200041°F 200424%0%
Aug 1580°F60°F91°F 200343°F 200424%0%
Aug 1680°F60°F97°F 200345°F 201224%0%
Aug 1780°F60°F97°F 200339°F 201224%0%
Aug 1880°F60°F97°F 200342°F 200224%0%
Aug 1980°F60°F93°F 202337°F 200424%0%
Aug 2080°F60°F91°F 200343°F 200424%0%
Aug 2179°F59°F94°F 202036°F 200424%0%
Aug 2279°F59°F98°F 202346°F 199724%0%
Aug 2379°F59°F97°F 202046°F 200823%0%
Aug 2479°F59°F99°F 202044°F 200823%0%
Aug 2579°F58°F99°F 202040°F 201523%0%
Aug 2679°F58°F97°F 202041°F 201523%0%
Aug 2779°F58°F95°F 202050°F 200523%0%
Aug 2878°F58°F94°F 201348°F 202623%0%
Aug 2978°F58°F94°F 201244°F 200423%0%
Aug 3078°F57°F96°F 200038°F 200923%0%
Aug 3178°F57°F89°F 201336°F 200923%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Okoboji, 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 6:11 AM, sunset 8:43 PM
August 31
sunrise 6:44 AM, sunset 7:57 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00135493 (Milford 4 Nw), public domain. Records: NOAA GHCN-Daily, station USW00014972, 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.