Geneva weather in July

In July, Geneva sees average daytime highs of 82°F and overnight lows near 65°F, with 3.7 in of rain across 11.2 wet days and about 14.7 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 32% of the time in July, and the air most often feels muggy.

Daylight stretches from about 15 hours at the start of July to 14 h 18 min by month's end. Set against the rest of the year, July is Geneva's 3rd-clearest and 11th-windiest month. For the whole year in context, see Geneva's year-round climate.

Daytime high
82°
1st warmest
Overnight low
65°
12th coldest
Rainfall
3.7 in
11.2 wet days
Daylight
14 h 48 min
4:36 AM – 7:22 PM
Cloud cover
56%
3rd clearest
Wind
6 mph
11th windiest
Solar energy
6.19 kWh/m²
Travel score
6.1
out of 10

Geneva is city and county seat of Kane County, Illinois, United States.

Density
843/km²
people per km²
Founded
1835

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 Geneva reaches about 82°F in the afternoon and slips back to 65°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 90°F. Set against its neighbours, July runs about 4°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18264
28264
38264
48264
58264
68264
78264
88264
98264
108265
118265
128365
138365
148365
158365
168365
178365
188365
198365
208365
218265
228265
238265
248265
258265
268265
278265
288264
298264
308264
318264

How July really feels in Geneva

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.

Geneva 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
Jan30° / 16°2.17.95.79.30.0
Feb34° / 20°1.974.910.30.0
Mar46° / 29°2.69.63.111.71.4
Apr58° / 39°4.512113.14.1
May69° / 50°4.612.5014.36.0
Jun79° / 60°4.212.30156.3
Jul82° / 65°3.711.2014.76.1
Aug80° / 62°3.710.6013.76.5
Sep74° / 55°3.18.4012.37.1
Oct61° / 43°3.190.210.95.2
Nov47° / 32°2.481.59.61.5
Dec35° / 22°2.284.490.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35446
45446
55545
65446
75446
85446
95446
105347
115347
125347
135248
145248
155248
165248
175149
185149
195149
205149
215149
225149
235149
245149
255248
265248
275248
285248
295248
305248
315248

Chance of precipitation in July

Any precipitation

Geneva gets around 3.7 in of rain over 11.2 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 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
338
438
537
637
737
837
937
1037
1137
1237
1337
1437
1537
1636
1736
1836
1936
2036
2136
2236
2336
2436
2536
2636
2736
2835
2935
3035
3134

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 28% 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 (%)
12120222890
22020222890
32020222890
420202228100
520202328100
619192328100
719192429100
818192429101
917192429101
1016192530101
1115182530111
1215182530111
1314182530121
1413182530121
1513182530131
1613182530131
1712182530141
1812182529141
1912182529152
2012182429152
2112182429162
2211192428162
2311192428161
2411202427161
2511212427151
2611222427151
2711222426151
2811232426141
2912242426131
3012242426131
3112252525131

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
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
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 hours at the start of July to 14 h 18 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 4:26 AM to 4:50 AM, and sunset from 7:27 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.04:267:27
215.04:277:27
315.04:277:27
415.04:287:27
515.04:287:26
615.04:297:26
714.94:297:26
814.94:307:26
914.94:317:25
1014.94:317:25
1114.94:327:24
1214.94:337:24
1314.84:347:23
1414.84:347:23
1514.84:357:22
1614.84:367:22
1714.74:377:21
1814.74:387:21
1914.74:387:20
2014.74:397:19
2114.64:407:18
2214.64:417:18
2314.64:427:17
2414.64:437:16
2514.54:447:15
2614.54:457:14
2714.54:467:13
2814.44:477:12
2914.44:487:11
3014.44:497:10
3114.34:507:09

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.19 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 6.19 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
296.0Bright
305.9Bright
315.9Bright
Planning a trip in July

Is July a good time to visit Geneva?

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

6.1
Sightseeing
4th-best month of the year
6.6
Beach & pool
1st-best month of the year

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

What to pack for Geneva in July

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

In July, Geneva sees daytime highs around 82°F and nights near 65°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

Sea temperature near Geneva in July

The nearest coast averages about 70°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 35 mi away) is warmest in August at about 73°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 13 to Sep 15 — about 2.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May45Bracing
Jun57Bracing
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Geneva 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 Geneva peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 20UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Geneva 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 Geneva is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1817 µg/m³Oct 229 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar16Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov10Good
Dec11Good
Location & terrain

Where is Geneva?

Geneva sits at 41.9°N, 88.3°W, 712 ft above sea level, in United States. The nearest listed city is St. Charles, 1.9 mi away.

Topography around Geneva

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

Within 2 miles, the terrain around Geneva has only modest variations in elevation — a maximum elevation change of 220 ft around an average of 751 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 407 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 876 ft.

The land around Geneva is covered by trees (46%), artificial surfaces (27%) and grassland (21%) within 2 miles, trees (34%), grassland (27%) and artificial surfaces (20%) within 10 miles, and cropland (44%) and trees (20%) within 50 miles.

2 miles
220 ft
10 miles
407 ft
50 miles
876 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: St. Charles 1.9 mi · Batavia 2.5 mi · West Chicago 5.0 mi · North Aurora 5.6 mi · Wasco 6.2 mi · South Elgin 7.5 mi · Aurora 8.7 mi · Carol Stream 8.7 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 Geneva (41.8875°, -88.3054°, elevation 712 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).