Grant County climate

Grant County Weather in August

NOAA 1991-2020 normals for Milbank, 12.9 km from Grant County

Average highs run from 81°F on August 1 to 76°F on August 31, and lows from 60°F to 54°F. Normal precipitation for the month is 3.21 in.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Grant County, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
79°F
Average low
57°F
Precipitation
3.21 in
Record high
97°FAug 23, 2023
Record low
45°FAug 26, 2015
Chance of a freeze
0%
Days of 90°F or more
2.1
Daylight
14 h 42 min to 13 h 18 min
Cloud cover
49%
Humidity
65%
Dew point
56°F
Wind
9.8 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 181°F60°F90°F 201054°F 20210%
Aug 281°F60°F93°F 201246°F 20180%
Aug 381°F60°F93°F 202249°F 20180%
Aug 481°F60°F92°F 202450°F 20200%
Aug 581°F60°F86°F 201052°F 20120%
Aug 681°F59°F92°F 202253°F 20240%
Aug 781°F59°F87°F 201253°F 20130%
Aug 881°F59°F91°F 201052°F 20220%
Aug 980°F59°F91°F 201050°F 20160%
Aug 1080°F59°F90°F 201049°F 20240%
Aug 1180°F59°F87°F 201847°F 20120%
Aug 1280°F58°F88°F 201051°F 20120%
Aug 1380°F58°F88°F 201049°F 20130%
Aug 1480°F58°F91°F 201848°F 20130%
Aug 1580°F58°F90°F 201550°F 20130%
Aug 1679°F58°F89°F 201551°F 20120%
Aug 1779°F57°F87°F 202147°F 20120%
Aug 1879°F57°F91°F 202150°F 20120%
Aug 1979°F57°F88°F 201151°F 20150%
Aug 2079°F57°F89°F 202147°F 20120%
Aug 2178°F56°F92°F 201346°F 20120%
Aug 2278°F56°F86°F 201050°F 20190%
Aug 2378°F56°F97°F 202348°F 20260%
Aug 2478°F56°F91°F 201047°F 20150%
Aug 2578°F55°F93°F 201346°F 20250%
Aug 2677°F55°F94°F 201345°F 20150%
Aug 2777°F55°F93°F 201347°F 20150%
Aug 2877°F55°F91°F 201349°F 20260%
Aug 2977°F54°F88°F 201045°F 20180%
Aug 3076°F54°F95°F 201346°F 20180%
Aug 3176°F54°F90°F 201052°F 20120%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grant County, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:12 AM, sunset 8:54 PM
August 31
sunrise 6:48 AM, sunset 8:06 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00395531 (Milbank), public domain. Records: NOAA GHCN-Daily, station USC00395531, 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.