Box Elder climate

Box Elder Weather in August

NOAA 1991-2020 normals for Rapid City Rgnl AP, 7.8 km from Box Elder

Average highs run from 88°F on August 1 to 82°F on August 31, and lows from 59°F to 52°F. Normal precipitation for the month is 1.59 in over about 8 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 Box Elder, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
56°F
Precipitation
1.59 in
Record high
107°FAug 13, 2007
Record low
37°FAug 31, 2020
Chance of a freeze
0%
Days of 90°F or more
11.4
Daylight
14 h 36 min to 13 h 16 min
Cloud cover
46%
Humidity
52%
Dew point
51°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 188°F59°F102°F 195542°F 200929%0%
Aug 288°F59°F104°F 202647°F 197129%0%
Aug 388°F59°F103°F 202442°F 197829%0%
Aug 487°F59°F103°F 200143°F 202629%0%
Aug 587°F59°F103°F 202245°F 198028%0%
Aug 687°F59°F104°F 196150°F 198928%0%
Aug 787°F59°F105°F 197545°F 198928%0%
Aug 887°F58°F103°F 199248°F 202328%0%
Aug 987°F58°F102°F 195847°F 196728%0%
Aug 1087°F58°F103°F 200743°F 200427%0%
Aug 1187°F58°F103°F 200640°F 200427%0%
Aug 1286°F58°F105°F 196545°F 196427%0%
Aug 1386°F57°F107°F 200743°F 200427%0%
Aug 1486°F57°F100°F 200347°F 199526%0%
Aug 1586°F57°F106°F 198847°F 202326%0%
Aug 1686°F57°F101°F 197345°F 196826%0%
Aug 1786°F56°F105°F 202139°F 200226%0%
Aug 1885°F56°F104°F 195943°F 200225%0%
Aug 1985°F56°F104°F 198641°F 197825%0%
Aug 2085°F55°F104°F 197342°F 196425%0%
Aug 2185°F55°F99°F 196243°F 202124%0%
Aug 2285°F55°F104°F 194938°F 196624%0%
Aug 2384°F55°F104°F 194938°F 201524%0%
Aug 2484°F54°F102°F 202441°F 201524%0%
Aug 2584°F54°F103°F 199142°F 196424%0%
Aug 2684°F54°F103°F 199143°F 196724%0%
Aug 2783°F53°F103°F 199142°F 199223%0%
Aug 2883°F53°F100°F 201241°F 200423%0%
Aug 2983°F53°F107°F 201241°F 198823%0%
Aug 3083°F52°F102°F 194838°F 199223%0%
Aug 3182°F52°F103°F 195437°F 202023%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Box Elder, 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 5:40 AM, sunset 8:16 PM
August 31
sunrise 6:14 AM, sunset 7:30 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024090 (Rapid City Rgnl AP), public domain. Records: NOAA GHCN-Daily, station USW00024090, 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.