Grantsburg climate

Grantsburg Weather in August

NOAA 1991-2020 normals for Grantsburg, 0.6 km from Grantsburg

Average highs run from 82°F on August 1 to 78°F on August 31, and lows from 58°F to 53°F. Normal precipitation for the month is 4.45 in over about 11 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 Grantsburg, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
80°F
Average low
56°F
Precipitation
4.45 in
Record high
100°FAug 11, 2007
Record low
33°FAug 21, 2004
Chance of a freeze
0%
Days of 90°F or more
2.4
Daylight
14 h 45 min to 13 h 19 min
Cloud cover
54%
Humidity
70%
Dew point
57°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 182°F58°F98°F 200646°F 202535%0%
Aug 282°F58°F94°F 200745°F 201935%0%
Aug 382°F58°F92°F 200743°F 199235%0%
Aug 482°F58°F93°F 201038°F 199235%0%
Aug 582°F58°F93°F 201041°F 199435%0%
Aug 682°F57°F94°F 200139°F 199334%0%
Aug 782°F57°F96°F 200140°F 199334%0%
Aug 882°F57°F96°F 200747°F 201334%0%
Aug 982°F57°F95°F 200544°F 199434%0%
Aug 1081°F57°F95°F 201041°F 200834%0%
Aug 1181°F57°F100°F 200742°F 201234%0%
Aug 1281°F57°F94°F 201042°F 200434%0%
Aug 1381°F57°F91°F 200939°F 199734%0%
Aug 1481°F56°F90°F 201837°F 199234%0%
Aug 1581°F56°F94°F 200942°F 199234%0%
Aug 1681°F56°F91°F 200342°F 199234%0%
Aug 1781°F56°F91°F 200339°F 201234%0%
Aug 1880°F56°F91°F 200341°F 201234%0%
Aug 1980°F56°F94°F 200837°F 200434%0%
Aug 2080°F55°F90°F 202337°F 201234%0%
Aug 2180°F55°F93°F 201333°F 200434%0%
Aug 2280°F55°F89°F 201340°F 202233%0%
Aug 2380°F55°F94°F 202338°F 200533%0%
Aug 2479°F55°F95°F 200342°F 200833%0%
Aug 2579°F54°F93°F 201240°F 200833%0%
Aug 2679°F54°F99°F 201343°F 201533%0%
Aug 2779°F54°F98°F 201339°F 199633%0%
Aug 2879°F54°F92°F 199143°F 199233%0%
Aug 2978°F53°F92°F 199140°F 200433%0%
Aug 3078°F53°F96°F 201338°F 200933%0%
Aug 3178°F53°F94°F 199138°F 200933%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grantsburg, 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 5:54 AM, sunset 8:39 PM
August 31
sunrise 6:31 AM, sunset 7:50 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014995 (Grantsburg), public domain. Records: NOAA GHCN-Daily, station USC00218986, 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.