Vandalia climate

Vandalia Weather in August

NOAA 1991-2020 normals for Vandalia, 0.4 km from Vandalia

Average highs run from 87°F on August 1 to 84°F on August 31, and lows from 66°F to 62°F. Normal precipitation for the month is 3.24 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 Vandalia, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
86°F
Average low
64°F
Precipitation
3.24 in
Record high
105°FAug 20, 1983
Record low
44°FAug 13, 1964
Chance of a freeze
0%
Days of 90°F or more
9.0
Daylight
14 h 11 min to 13 h 04 min
Cloud cover
48%
Humidity
73%
Dew point
65°F
Wind
7.2 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°F66°F99°F 201252°F 199225%0%
Aug 286°F66°F100°F 198754°F 197725%0%
Aug 386°F66°F103°F 196451°F 196525%0%
Aug 486°F66°F101°F 196453°F 197425%0%
Aug 586°F66°F98°F 198352°F 201725%0%
Aug 686°F66°F97°F 196850°F 199425%0%
Aug 786°F66°F98°F 198048°F 199025%0%
Aug 886°F66°F99°F 198048°F 198925%0%
Aug 986°F65°F101°F 198051°F 198924%0%
Aug 1086°F65°F101°F 198052°F 198924%0%
Aug 1186°F65°F98°F 194453°F 196724%0%
Aug 1286°F65°F97°F 194350°F 196724%0%
Aug 1386°F65°F101°F 200744°F 196424%0%
Aug 1486°F65°F97°F 201051°F 200424%0%
Aug 1586°F65°F102°F 198849°F 196324%0%
Aug 1686°F65°F103°F 198851°F 200424%0%
Aug 1786°F65°F104°F 198853°F 200424%0%
Aug 1886°F65°F101°F 198852°F 196324%0%
Aug 1986°F64°F102°F 196252°F 197724%0%
Aug 2086°F64°F105°F 198352°F 196724%0%
Aug 2186°F64°F102°F 198349°F 196724%0%
Aug 2286°F64°F98°F 198350°F 196724%0%
Aug 2386°F64°F98°F 194353°F 196623%0%
Aug 2486°F63°F103°F 194351°F 196623%0%
Aug 2585°F63°F104°F 194348°F 195823%0%
Aug 2685°F63°F104°F 194349°F 195823%0%
Aug 2785°F63°F98°F 199050°F 196723%0%
Aug 2885°F63°F99°F 199048°F 196723%0%
Aug 2985°F62°F99°F 200745°F 196523%0%
Aug 3085°F62°F96°F 200045°F 198623%0%
Aug 3184°F62°F102°F 194348°F 196723%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Vandalia, 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 5:57 AM, sunset 8:08 PM
August 31
sunrise 6:24 AM, sunset 7:28 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00118781 (Vandalia), public domain. Records: NOAA GHCN-Daily, station USC00117636, 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.