Custer County climate

Custer County Weather in August

NOAA 1991-2020 normals for Clinton, 15.5 km from Custer County

Average highs run from 96°F on August 1 to 92°F on August 31, and lows from 70°F to 67°F. Normal precipitation for the month is 4.16 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 Custer County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
94°F
Average low
69°F
Precipitation
4.16 in
Record high
115°FAug 11, 1936
Record low
49°FAug 21, 1956
Chance of a freeze
0%
Days of 90°F or more
23.4
Daylight
13 h 56 min to 12 h 57 min
Cloud cover
42%
Humidity
57%
Dew point
63°F
Wind
9.6 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 196°F70°F109°F 198058°F 196018%0%
Aug 296°F70°F109°F 198059°F 196518%0%
Aug 396°F70°F107°F 193760°F 194918%0%
Aug 496°F70°F109°F 196459°F 194918%0%
Aug 596°F70°F109°F 196459°F 194818%0%
Aug 696°F70°F113°F 196458°F 199018%0%
Aug 796°F70°F109°F 195155°F 199718%0%
Aug 896°F70°F110°F 193653°F 198918%0%
Aug 996°F69°F113°F 193655°F 198919%0%
Aug 1095°F69°F114°F 193661°F 196719%0%
Aug 1195°F69°F115°F 193656°F 196019%0%
Aug 1295°F69°F115°F 193654°F 196719%0%
Aug 1395°F69°F111°F 196956°F 196719%0%
Aug 1495°F69°F108°F 193656°F 200219%0%
Aug 1595°F69°F110°F 195256°F 199219%0%
Aug 1695°F69°F111°F 195251°F 199419%0%
Aug 1795°F69°F108°F 195158°F 194219%0%
Aug 1894°F69°F108°F 197856°F 199219%0%
Aug 1994°F69°F107°F 197055°F 195019%0%
Aug 2094°F69°F106°F 195250°F 195619%0%
Aug 2194°F68°F111°F 198449°F 195619%0%
Aug 2294°F68°F105°F 198356°F 194919%0%
Aug 2393°F68°F108°F 193653°F 196119%0%
Aug 2493°F68°F108°F 193653°F 196619%0%
Aug 2593°F68°F109°F 198852°F 196620%0%
Aug 2693°F68°F108°F 195252°F 196220%0%
Aug 2793°F68°F107°F 198453°F 196220%0%
Aug 2892°F67°F106°F 195155°F 198620%0%
Aug 2992°F67°F108°F 198451°F 198620%0%
Aug 3092°F67°F107°F 195151°F 194620%0%
Aug 3192°F67°F109°F 195252°F 195521%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Custer County, 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 6:44 AM, sunset 8:40 PM
August 31
sunrise 7:07 AM, sunset 8:04 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00341909 (Clinton), public domain. Records: NOAA GHCN-Daily, station USC00341909, 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.