Cass County climate

Cass County Weather in August

NOAA 1991-2020 normals for Deep Portage, 7.3 km from Cass County

Average highs run from 80°F on August 1 to 74°F on August 31, and lows from 58°F to 54°F.

August day by day

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

Normal daily high and low temperature at Cass County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
57°F
Record high
100°FAug 19, 1976
Record low
27°FAug 21, 2004
Chance of a freeze
0%
Days of 90°F or more
0.6
Daylight
14 h 52 min to 13 h 23 min
Cloud cover
52%
Humidity
65%
Dew point
55°F
Wind
10.1 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 180°F58°F97°F 200642°F 19980%
Aug 280°F58°F96°F 193038°F 19120%
Aug 380°F58°F95°F 195837°F 19120%
Aug 480°F58°F99°F 194739°F 19720%
Aug 580°F58°F94°F 200138°F 19230%
Aug 679°F58°F94°F 193039°F 19170%
Aug 779°F58°F94°F 193642°F 19020%
Aug 879°F58°F93°F 198341°F 19020%
Aug 979°F58°F95°F 195839°F 19320%
Aug 1079°F58°F97°F 194739°F 19670%
Aug 1179°F57°F96°F 193637°F 19140%
Aug 1279°F57°F90°F 197043°F 19900%
Aug 1379°F57°F95°F 197033°F 19240%
Aug 1478°F57°F95°F 192235°F 19640%
Aug 1578°F57°F94°F 201533°F 19290%
Aug 1678°F57°F96°F 198839°F 19760%
Aug 1778°F57°F96°F 198833°F 19240%
Aug 1878°F57°F97°F 197636°F 19150%
Aug 1977°F56°F100°F 197636°F 19320%
Aug 2077°F56°F98°F 197630°F 19340%
Aug 2177°F56°F92°F 197627°F 20040%
Aug 2277°F56°F93°F 194735°F 19670%
Aug 2376°F56°F94°F 192231°F 19400%
Aug 2476°F55°F92°F 194831°F 19770%
Aug 2576°F55°F92°F 197634°F 20040%
Aug 2676°F55°F94°F 201330°F 19150%
Aug 2775°F55°F94°F 199130°F 19410%
Aug 2875°F55°F93°F 198428°F 19340%
Aug 2975°F54°F93°F 198430°F 19170%
Aug 3075°F54°F91°F 193236°F 19030%
Aug 3174°F54°F91°F 193031°F 19060%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cass 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 5:57 AM, sunset 8:49 PM
August 31
sunrise 6:36 AM, sunset 7:59 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00212050 (Deep Portage), public domain. Records: NOAA GHCN-Daily, station USC00214652, 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.