Dayton climate

Dayton Weather in August

NOAA 1991-2020 normals for Dayton, 0.2 km from Dayton

Average highs run from 87°F on August 1 to 80°F on August 31, and lows from 53°F to 45°F. Normal precipitation for the month is 0.88 in over about 6 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 Dayton, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
50°F
Precipitation
0.88 in
Record high
106°FAug 7, 1983
Record low
30°FAug 23, 2015
Chance of a freeze
8%
Days of 90°F or more
8.4
Daylight
14 h 40 min to 13 h 18 min
Cloud cover
45%
Humidity
44%
Dew point
42°F
Wind
5.6 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°F53°F104°F 202642°F 196820%0%
Aug 287°F53°F105°F 202445°F 197520%0%
Aug 387°F53°F103°F 200145°F 197420%0%
Aug 487°F53°F101°F 202239°F 198020%0%
Aug 587°F53°F102°F 196137°F 198020%0%
Aug 687°F52°F105°F 194944°F 199620%0%
Aug 787°F52°F106°F 198342°F 201719%0%
Aug 886°F52°F104°F 198339°F 196619%0%
Aug 986°F52°F101°F 200640°F 199519%0%
Aug 1086°F52°F104°F 202241°F 197719%0%
Aug 1186°F51°F104°F 198339°F 200419%0%
Aug 1286°F51°F104°F 201840°F 198519%0%
Aug 1385°F51°F102°F 200041°F 200219%0%
Aug 1485°F51°F104°F 201539°F 200519%0%
Aug 1585°F50°F100°F 200338°F 197419%0%
Aug 1685°F50°F102°F 200341°F 200219%0%
Aug 1784°F50°F101°F 202032°F 200219%0%
Aug 1884°F50°F100°F 198840°F 198719%0%
Aug 1984°F49°F101°F 202539°F 200219%0%
Aug 2084°F49°F100°F 198840°F 195019%0%
Aug 2183°F49°F102°F 202438°F 197419%0%
Aug 2283°F48°F100°F 200635°F 196619%0%
Aug 2383°F48°F98°F 196930°F 201519%0%
Aug 2482°F48°F100°F 195338°F 196619%0%
Aug 2582°F47°F102°F 199136°F 196419%0%
Aug 2682°F47°F100°F 199438°F 196019%0%
Aug 2781°F46°F98°F 198335°F 197619%0%
Aug 2881°F46°F99°F 201237°F 196219%0%
Aug 2981°F46°F102°F 201239°F 201819%0%
Aug 3080°F45°F101°F 194836°F 199219%0%
Aug 3180°F45°F103°F 195433°F 199320%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dayton, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 5:55 AM, sunset 8:35 PM
August 31
sunrise 6:30 AM, sunset 7:48 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00482399 (Dayton), public domain. Records: NOAA GHCN-Daily, station USW00024029, 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.