Onawa climate

Onawa Weather in August

NOAA 1991-2020 normals for Onawa 3NW, 5.3 km from Onawa

Average highs run from 85°F on August 1 to 82°F on August 31, and lows from 62°F to 56°F. Normal precipitation for the month is 4.07 in over about 7 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 Onawa, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
59°F
Precipitation
4.07 in
Record high
101°FAug 30, 2000
Record low
42°FAug 14, 2004
Chance of a freeze
0%
Days of 90°F or more
6.1
Daylight
14 h 25 min to 13 h 10 min
Cloud cover
50%
Humidity
66%
Dew point
61°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 185°F62°F100°F 201254°F 200923%0%
Aug 285°F62°F100°F 202251°F 200223%0%
Aug 385°F62°F99°F 200250°F 201723%0%
Aug 485°F62°F96°F 200147°F 202023%0%
Aug 585°F62°F99°F 202452°F 201723%0%
Aug 685°F61°F100°F 202250°F 199723%0%
Aug 785°F61°F99°F 201257°F 199723%0%
Aug 885°F61°F95°F 200952°F 201723%0%
Aug 985°F61°F96°F 200550°F 202423%0%
Aug 1084°F61°F93°F 201647°F 202423%0%
Aug 1184°F61°F95°F 201045°F 200423%0%
Aug 1284°F60°F96°F 200050°F 200423%0%
Aug 1384°F60°F91°F 201046°F 200423%0%
Aug 1484°F60°F94°F 200042°F 200423%0%
Aug 1584°F60°F94°F 201248°F 200422%0%
Aug 1684°F60°F97°F 200351°F 200222%0%
Aug 1784°F60°F97°F 200347°F 201222%0%
Aug 1884°F59°F99°F 200347°F 200222%0%
Aug 1983°F59°F95°F 199842°F 200422%0%
Aug 2083°F59°F94°F 199850°F 201522%0%
Aug 2183°F59°F96°F 202348°F 200422%0%
Aug 2283°F58°F97°F 202349°F 200922%0%
Aug 2383°F58°F98°F 202351°F 200922%0%
Aug 2483°F58°F100°F 202345°F 201522%0%
Aug 2583°F58°F100°F 200345°F 202522%0%
Aug 2683°F57°F99°F 202448°F 202522%0%
Aug 2782°F57°F96°F 202052°F 200522%0%
Aug 2882°F57°F97°F 201250°F 201922%0%
Aug 2982°F57°F99°F 201245°F 200422%0%
Aug 3082°F56°F101°F 200047°F 200622%0%
Aug 3182°F56°F97°F 201244°F 200922%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Onawa, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:18 AM, sunset 8:43 PM
August 31
sunrise 6:49 AM, sunset 7:59 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00136243 (Onawa 3NW), public domain. Records: NOAA GHCN-Daily, station USW00094978, 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.