Sullivan climate

Sullivan Weather in August

NOAA 1991-2020 normals for Sullivan 3S, 4.4 km from Sullivan

Average highs run from 86°F on August 1 to 84°F on August 31, and lows from 64°F to 60°F. Normal precipitation for the month is 3.16 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 Sullivan, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
62°F
Precipitation
3.16 in
Record high
99°FAug 2, 2012
Record low
47°FAug 12, 2004
Chance of a freeze
0%
Days of 90°F or more
5.5
Daylight
14 h 13 min to 13 h 05 min
Cloud cover
48%
Humidity
73%
Dew point
64°F
Wind
7.4 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 186°F64°F94°F 200655°F 201924%0%
Aug 286°F64°F99°F 201255°F 202124%0%
Aug 386°F64°F94°F 201053°F 202524%0%
Aug 486°F64°F96°F 201055°F 200724%0%
Aug 586°F64°F92°F 200250°F 200923%0%
Aug 686°F64°F91°F 200649°F 200423%0%
Aug 786°F64°F95°F 200751°F 200423%0%
Aug 886°F64°F96°F 201254°F 200223%0%
Aug 986°F63°F94°F 200554°F 201723%0%
Aug 1086°F63°F96°F 201055°F 202423%0%
Aug 1185°F63°F96°F 201050°F 200423%0%
Aug 1285°F63°F98°F 200747°F 200422%0%
Aug 1385°F63°F95°F 201050°F 200422%0%
Aug 1485°F63°F93°F 201049°F 200122%0%
Aug 1585°F63°F96°F 200747°F 201122%0%
Aug 1685°F63°F94°F 202550°F 200422%0%
Aug 1785°F62°F94°F 200055°F 201022%0%
Aug 1885°F62°F92°F 202551°F 200722%0%
Aug 1985°F62°F92°F 202553°F 202022%0%
Aug 2085°F62°F91°F 201053°F 201222%0%
Aug 2185°F62°F95°F 200350°F 202422%0%
Aug 2285°F62°F95°F 200750°F 202422%0%
Aug 2385°F61°F97°F 200752°F 202422%0%
Aug 2485°F61°F99°F 202353°F 201522%0%
Aug 2585°F61°F99°F 202352°F 202522%0%
Aug 2685°F61°F95°F 200350°F 202522%0%
Aug 2785°F61°F95°F 200350°F 202522%0%
Aug 2884°F60°F94°F 200755°F 200722%0%
Aug 2984°F60°F97°F 200752°F 200922%0%
Aug 3084°F60°F95°F 201348°F 200922%0%
Aug 3184°F60°F95°F 201348°F 202322%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sullivan, 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 5:54 AM, sunset 8:07 PM
August 31
sunrise 6:22 AM, sunset 7:27 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00118389 (Sullivan 3S), public domain. Records: NOAA GHCN-Daily, station USW00053802, 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.