Dubuque weather in July

In July, Dubuque sees average daytime highs of 82°F and overnight lows near 65°F, with 3.8 in of rain across 9.9 wet days and about 14.8 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 36% of the time in July, and the air most often feels humid.

Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Dubuque's 3rd-clearest and 11th-windiest month. For the whole year in context, see Dubuque's year-round climate.

Daytime high
82°
1st warmest
Overnight low
65°
12th coldest
Rainfall
3.8 in
9.9 wet days
Daylight
14 h 48 min
4:43 AM – 7:33 PM
Cloud cover
53%
3rd clearest
Wind
6 mph
11th windiest
Solar energy
6.29 kWh/m²
Travel score
6.5
out of 10

Dubuque is city in and county seat of Dubuque, Iowa, United States.

Density
719/km²
people per km²
Founded
1788

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 82°F through the month.

A typical July day in Dubuque reaches about 82°F in the afternoon and slips back to 65°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 89°F. Set against its neighbours, July runs about 3°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18164
28164
38165
48165
58265
68265
78265
88265
98265
108265
118265
128265
138265
148266
158266
168266
178266
188266
198266
208266
218266
228265
238265
248265
258265
268265
278265
288265
298265
308165
318165

How July really feels in Dubuque

Once humidity and wind are folded in, July averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Dubuque weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 13°1.57.469.20.0
Feb32° / 17°1.76.6510.30.0
Mar45° / 29°2.593.411.61.1
Apr58° / 40°4.211.71.113.14.0
May69° / 51°4.412.7014.45.9
Jun78° / 61°4.712015.16.4
Jul82° / 65°3.89.9014.86.5
Aug80° / 63°3.89.7013.76.8
Sep73° / 55°3.68.3012.37.1
Oct60° / 42°2.78.60.410.84.9
Nov45° / 31°2.37.529.61.1
Dec33° / 20°1.97.75.48.90.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35644
45644
55743
65743
75743
85743
95743
105743
115743
125644
135644
145644
155545
165446
175446
185446
195347
205347
215347
225347
235347
245347
255446
265545
275644
285644
295743
305743
315743

Chance of precipitation in July

Any precipitation

Dubuque gets around 3.8 in of rain over 9.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
134
234
334
433
533
633
732
832
932
1033
1133
1233
1333
1434
1534
1634
1734
1834
1933
2033
2133
2233
2333
2433
2532
2632
2731
2831
2931
3030
3130

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 42% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
118202428100
217202428110
317202428110
417202528110
516192528110
616192628120
715192628120
814192728120
913182728121
1012182829131
1111182829131
1210182829141
1310182929141
149182928151
159182928151
169182828152
178182828162
188192827162
198192827162
208192727162
218202726172
228202726172
238212726172
248212725162
259222725162
269232724162
279232724151
289242823151
2910242823141
3010242823141
3110242923131

Wind in July

Winds average 6 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:34 AM to 4:57 AM, and sunset from 7:38 PM to 7:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:347:38
215.14:347:38
315.14:357:38
415.04:357:38
515.04:367:38
615.04:367:38
715.04:377:37
815.04:377:37
915.04:387:37
1015.04:397:36
1114.94:407:36
1214.94:407:35
1314.94:417:35
1414.94:427:34
1514.94:437:34
1614.84:437:33
1714.84:447:32
1814.84:457:32
1914.84:467:31
2014.74:477:30
2114.74:487:30
2214.74:497:29
2314.64:507:28
2414.64:517:27
2514.64:517:26
2614.54:527:25
2714.54:537:24
2814.54:547:23
2914.44:557:22
3014.44:567:21
3114.44:577:20

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.29 kWh/m².

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 6.3 kWh/m² in June across the year — July's 6.29 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.0Intense
Planning a trip in July

Is July a good time to visit Dubuque?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
3rd-best month of the year
6.8
Beach & pool
1st-best month of the year

July is a reasonable time to visit Dubuque for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Dubuque in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Dubuque sees daytime highs around 82°F and nights near 65°F. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Dubuque in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dubuque peaks around June 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Dubuque in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Dubuque is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1915 µg/m³Oct 227 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr11Good
May12Moderate
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov8Good
Dec9Good
Location & terrain

Where is Dubuque?

Dubuque sits at 42.5°N, 90.7°W, 620 ft above sea level, in United States. The nearest listed city is Clinton, 52 mi away.

Topography around Dubuque

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Dubuque.

Within 2 miles, the terrain around Dubuque has only modest variations in elevation — a maximum elevation change of 328 ft around an average of 715 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 633 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 896 ft.

The land around Dubuque is covered by artificial surfaces (36%) and trees (34%) within 2 miles, cropland (35%), trees (34%) and grassland (20%) within 10 miles, and cropland (57%) and trees (26%) within 50 miles.

2 miles
328 ft
10 miles
633 ft
50 miles
896 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Clinton 52 mi · Freeport 55 mi · Marion 58 mi · Cedar Rapids 60 mi · Davenport 68 mi · Bettendorf 68 mi · Fitchburg 68 mi · Rock Island 68 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Dubuque (42.5006°, -90.6646°, elevation 620 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).