Dubuque climate

Dubuque Weather in August

NOAA 1991-2020 normals for Dubuque L&d 11, 4.6 km from Dubuque

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 64°F to 60°F. Normal precipitation for the month is 3.75 in over about 9 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 Dubuque, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
62°F
Precipitation
3.75 in
Record high
100°FAug 1, 1988
Record low
40°FAug 28, 1986
Chance of a freeze
0%
Days of 90°F or more
3.9
Daylight
14 h 27 min to 13 h 11 min
Cloud cover
53%
Humidity
74%
Dew point
61°F
Wind
7.8 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 184°F64°F100°F 198851°F 199229%0%
Aug 284°F64°F98°F 198850°F 200929%0%
Aug 384°F64°F98°F 198848°F 197629%0%
Aug 484°F64°F97°F 198843°F 197829%0%
Aug 583°F64°F90°F 196547°F 197829%0%
Aug 683°F64°F93°F 198449°F 200429%0%
Aug 783°F64°F95°F 198446°F 198929%0%
Aug 883°F64°F97°F 198347°F 198929%0%
Aug 983°F63°F96°F 200547°F 196630%0%
Aug 1083°F63°F96°F 198349°F 202430%0%
Aug 1183°F63°F92°F 198848°F 202430%0%
Aug 1283°F63°F94°F 199547°F 197730%0%
Aug 1383°F63°F93°F 199545°F 200430%0%
Aug 1483°F63°F93°F 198846°F 200430%0%
Aug 1582°F63°F98°F 198845°F 197930%0%
Aug 1682°F63°F99°F 198847°F 199230%0%
Aug 1782°F63°F99°F 198848°F 198130%0%
Aug 1882°F62°F93°F 195546°F 196330%0%
Aug 1982°F62°F99°F 198347°F 198530%0%
Aug 2082°F62°F96°F 195544°F 196730%0%
Aug 2182°F62°F95°F 195541°F 200430%0%
Aug 2281°F62°F94°F 196849°F 195230%0%
Aug 2381°F61°F97°F 202345°F 195230%0%
Aug 2481°F61°F94°F 202345°F 195830%0%
Aug 2581°F61°F92°F 200342°F 195830%0%
Aug 2681°F61°F95°F 200344°F 196430%0%
Aug 2781°F61°F94°F 202444°F 198630%0%
Aug 2880°F60°F97°F 198440°F 198630%0%
Aug 2980°F60°F99°F 198443°F 198630%0%
Aug 3080°F60°F93°F 195345°F 197430%0%
Aug 3180°F60°F96°F 195342°F 196730%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dubuque, 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 5:55 AM, sunset 8:22 PM
August 31
sunrise 6:27 AM, sunset 7:38 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00132364 (Dubuque L&d 11), public domain. Records: NOAA GHCN-Daily, station USW00094908, 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.