Custer County climate

Custer County Weather in August

NOAA 1991-2020 normals for Wind Cave, 13.7 km from Custer County

Average highs run from 85°F on August 1 to 81°F on August 31, and lows from 58°F to 51°F. Normal precipitation for the month is 2.30 in over about 9 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.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
55°F
Precipitation
2.30 in
Record high
95°FAug 5, 2022
Record low
31°FAug 31, 2020
Chance of a freeze
1%
Days of 90°F or more
7.5
Daylight
14 h 34 min to 13 h 14 min
Cloud cover
48%
Humidity
49%
Dew point
49°F
Wind
8.3 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°F58°F91°F 202240°F 200930%0%
Aug 285°F58°F94°F 202445°F 202030%0%
Aug 385°F57°F94°F 202442°F 201730%0%
Aug 485°F57°F93°F 202241°F 201730%0%
Aug 585°F57°F95°F 202241°F 201229%0%
Aug 685°F57°F89°F 201245°F 201829%0%
Aug 785°F57°F92°F 200147°F 201729%0%
Aug 885°F57°F92°F 202646°F 201729%0%
Aug 985°F57°F90°F 202244°F 200429%0%
Aug 1085°F56°F91°F 202637°F 200428%0%
Aug 1184°F56°F93°F 202236°F 200428%0%
Aug 1284°F56°F91°F 202039°F 200428%0%
Aug 1384°F56°F95°F 200736°F 200427%0%
Aug 1484°F56°F90°F 202539°F 200427%0%
Aug 1584°F55°F93°F 201542°F 200827%0%
Aug 1684°F55°F91°F 202139°F 200927%0%
Aug 1784°F55°F95°F 202132°F 200226%0%
Aug 1884°F55°F93°F 202337°F 200926%0%
Aug 1983°F54°F88°F 200138°F 200226%0%
Aug 2083°F54°F89°F 202535°F 201626%0%
Aug 2183°F54°F95°F 202338°F 200925%0%
Aug 2283°F54°F95°F 202339°F 201525%0%
Aug 2383°F54°F93°F 200635°F 201525%0%
Aug 2483°F53°F91°F 200039°F 201025%0%
Aug 2582°F53°F94°F 201142°F 200725%0%
Aug 2682°F53°F92°F 201042°F 200525%0%
Aug 2782°F52°F93°F 201038°F 200425%0%
Aug 2882°F52°F91°F 201236°F 200425%0%
Aug 2982°F52°F95°F 201237°F 202124%0%
Aug 3082°F52°F91°F 201542°F 200124%0%
Aug 3181°F51°F87°F 200831°F 202024%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.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 5:43 AM, sunset 8:17 PM
August 31
sunrise 6:17 AM, sunset 7:31 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00399347 (Wind Cave), public domain. Records: NOAA GHCN-Daily, station USW00094032, 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.