Roberts County climate

Roberts County Weather in August

NOAA 1991-2020 normals for Sisseton Muni AP, 5.6 km from Roberts County

Average highs run from 83°F on August 1 to 78°F on August 31, and lows from 59°F to 54°F. Normal precipitation for the month is 2.61 in over about 10 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 Roberts County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
81°F
Average low
57°F
Precipitation
2.61 in
Record high
99°FAug 17, 2003
Record low
35°FAug 21, 2004
Chance of a freeze
0%
Days of 90°F or more
3.0
Daylight
14 h 45 min to 13 h 19 min
Cloud cover
49%
Humidity
63%
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 183°F59°F92°F 202352°F 200231%0%
Aug 283°F59°F96°F 202242°F 201831%0%
Aug 383°F59°F94°F 202447°F 202031%0%
Aug 483°F59°F93°F 200147°F 201531%0%
Aug 583°F59°F96°F 202247°F 201231%0%
Aug 682°F59°F92°F 200150°F 201631%0%
Aug 782°F59°F93°F 200151°F 199931%0%
Aug 882°F58°F95°F 200147°F 199931%0%
Aug 982°F58°F93°F 201650°F 202431%0%
Aug 1082°F58°F94°F 200045°F 201331%0%
Aug 1182°F58°F98°F 200046°F 201231%0%
Aug 1282°F58°F90°F 200947°F 200431%0%
Aug 1381°F58°F90°F 200744°F 200431%0%
Aug 1481°F58°F94°F 200043°F 200431%0%
Aug 1581°F57°F94°F 200350°F 200431%0%
Aug 1681°F57°F90°F 200346°F 200031%0%
Aug 1781°F57°F99°F 200342°F 201231%0%
Aug 1881°F57°F96°F 200341°F 200231%0%
Aug 1981°F57°F91°F 200341°F 200431%0%
Aug 2080°F56°F93°F 201339°F 200431%0%
Aug 2180°F56°F89°F 202035°F 200431%0%
Aug 2280°F56°F95°F 202344°F 200530%0%
Aug 2380°F56°F97°F 200346°F 200430%0%
Aug 2480°F56°F95°F 201243°F 200830%0%
Aug 2580°F55°F94°F 201342°F 201530%0%
Aug 2679°F55°F93°F 201344°F 201530%0%
Aug 2779°F55°F96°F 199948°F 202630%0%
Aug 2879°F55°F90°F 199846°F 200830%0%
Aug 2979°F54°F96°F 201342°F 201830%0%
Aug 3079°F54°F95°F 200037°F 200930%0%
Aug 3178°F54°F92°F 201343°F 200929%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Roberts County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:11 AM, sunset 8:56 PM
August 31
sunrise 6:48 AM, sunset 8:07 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094993 (Sisseton Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00094993, 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.