Duluth climate

Duluth Weather in August

NOAA 1991-2020 normals for Atlanta Peachtree AP, 20.3 km from Duluth

Average highs run from 90°F on August 1 to 86°F on August 31, and lows from 70°F to 67°F. Normal precipitation for the month is 4.51 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 Duluth, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
88°F
Average low
69°F
Precipitation
4.51 in
Record high
103°FAug 22, 1983
Record low
51°FAug 28, 1983
Chance of a freeze
0%
Days of 90°F or more
15.7
Daylight
13 h 49 min to 12 h 54 min
Cloud cover
56%
Humidity
71%
Dew point
67°F
Wind
3.6 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 190°F70°F98°F 198056°F 198337%0%
Aug 290°F70°F102°F 199958°F 199237%0%
Aug 390°F70°F98°F 199956°F 198136%0%
Aug 489°F70°F96°F 195759°F 197636%0%
Aug 589°F70°F95°F 199956°F 197636%0%
Aug 689°F70°F99°F 195655°F 197636%0%
Aug 789°F70°F99°F 198056°F 197636%0%
Aug 889°F70°F101°F 198054°F 200436%0%
Aug 989°F70°F101°F 198054°F 200436%0%
Aug 1089°F70°F100°F 198054°F 200436%0%
Aug 1189°F70°F97°F 195659°F 198937%0%
Aug 1289°F70°F98°F 195658°F 196237%0%
Aug 1389°F70°F98°F 195952°F 196437%0%
Aug 1489°F70°F98°F 199552°F 196437%0%
Aug 1588°F69°F98°F 199553°F 197937%0%
Aug 1688°F69°F98°F 195653°F 196137%0%
Aug 1788°F69°F99°F 195654°F 197936%0%
Aug 1888°F69°F100°F 199558°F 196136%0%
Aug 1988°F69°F100°F 198358°F 197636%0%
Aug 2088°F69°F100°F 198359°F 197636%0%
Aug 2188°F69°F102°F 198356°F 199136%0%
Aug 2288°F69°F103°F 198355°F 198135%0%
Aug 2388°F68°F102°F 198356°F 196935%0%
Aug 2487°F68°F102°F 198354°F 199935%0%
Aug 2587°F68°F99°F 198757°F 195734%0%
Aug 2687°F68°F97°F 195954°F 198334%0%
Aug 2787°F68°F96°F 195953°F 198334%0%
Aug 2887°F68°F98°F 195951°F 198333%0%
Aug 2987°F67°F96°F 199053°F 196833%0%
Aug 3087°F67°F96°F 197054°F 196233%0%
Aug 3186°F67°F96°F 195756°F 196232%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Duluth, 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 (EDT).

August 1
sunrise 6:48 AM, sunset 8:37 PM
August 31
sunrise 7:10 AM, sunset 8:04 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00053863 (Atlanta Peachtree AP), public domain. Records: NOAA GHCN-Daily, station USC00099466, 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.