Zionsville weather in July

In July, Zionsville sees average daytime highs of 83°F and overnight lows near 67°F, with 3.5 in of rain across 11.8 wet days and about 14.5 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 34% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 48 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Zionsville's 3rd-clearest and 11th-windiest month. For the whole year in context, see Zionsville's year-round climate.

Daytime high
83°
1st warmest
Overnight low
67°
12th coldest
Rainfall
3.5 in
11.8 wet days
Daylight
14 h 36 min
5:33 AM – 8:08 PM
Cloud cover
55%
3rd clearest
Wind
6 mph
11th windiest
Solar energy
6.29 kWh/m²
Travel score
5.6
out of 10

Zionsville is town in Boone County, Indiana, United States.

Density
189/km²
people per km²
Founded
1852

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 83°F through the month.

A typical July day in Zionsville reaches about 83°F in the afternoon and slips back to 67°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 90°F. Set against its neighbours, July runs about 3°F warmer than June and on par with August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18366
28366
38366
48366
58366
68366
78366
88367
98367
108367
118367
128367
138367
148367
158367
168367
178367
188367
198367
208367
218367
228367
238367
248367
258367
268367
278366
288366
298366
308366
318366

How July really feels in Zionsville

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.

Zionsville weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan35° / 21°3.19.54.79.50.0
Feb39° / 24°2.58.74.310.40.1
Mar50° / 33°3.710.92.411.72.2
Apr62° / 44°4.6120.4135.0
May72° / 54°4.813.7014.26.0
Jun80° / 64°4.312.1014.86.1
Jul83° / 67°3.511.8014.55.6
Aug82° / 65°3.09.1013.66.6
Sep76° / 57°2.87.8012.37.2
Oct64° / 46°3.390.110.95.8
Nov50° / 35°3.49.21.19.82.4
Dec39° / 26°2.99.63.59.20.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35743
45644
55644
65644
75644
85644
95644
105743
115644
125644
135545
145446
155446
165347
175347
185347
195248
205248
215248
225248
235248
245248
255446
265446
275446
285545
295545
305545
315545

Chance of precipitation in July

Any precipitation

Zionsville gets around 3.5 in of rain over 11.8 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 38% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
437
537
637
737
837
937
1037
1137
1237
1338
1438
1538
1638
1739
1839
1939
2039
2139
2239
2339
2439
2539
2638
2737
2837
2936
3035
3135

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
112182334130
212182333140
312182333140
411192333150
511192332150
611192332160
710192332160
810192332160
910192332170
109182233170
119182233180
128182233180
138182233190
147182233201
157182232211
167172232211
176172232221
186172232231
196172231231
206172230241
216172230241
226172229241
236182229251
246182328241
256192328241
266192327231
276202426231
287212426221
297212526211
307222525201
317222525201

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
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 14 h 48 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 5:24 AM to 5:46 AM, and sunset from 8:12 PM to 7:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.85:248:12
214.85:258:12
314.85:258:12
414.85:268:12
514.85:268:12
614.85:278:12
714.75:278:12
814.75:288:11
914.75:298:11
1014.75:298:11
1114.75:308:10
1214.75:318:10
1314.65:318:09
1414.65:328:09
1514.65:338:08
1614.65:338:08
1714.65:348:07
1814.55:358:07
1914.55:368:06
2014.55:378:05
2114.55:378:05
2214.45:388:04
2314.45:398:03
2414.45:408:03
2514.35:418:02
2614.35:428:01
2714.35:438:00
2814.35:437:59
2914.25:447:58
3014.25:457:57
3114.25:467:56

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 — the sunniest month for solar.

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.29 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
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.0Intense
316.0Intense
Planning a trip in July

Is July a good time to visit Zionsville?

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

5.6
Sightseeing
6th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Zionsville in July

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

In July, Zionsville sees daytime highs around 83°F and nights near 67°F. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

UV index in Zionsville in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Zionsville peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Zionsville 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 Zionsville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1416 µg/m³Oct 218 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar12Moderate
Apr12Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Zionsville?

Zionsville sits at 40.0°N, 86.3°W, 843 ft above sea level, in United States. The nearest listed city is Carmel, 8.1 mi away.

Topography around Zionsville

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

Within 2 miles, the terrain around Zionsville has only modest variations in elevation — a maximum elevation change of 167 ft around an average of 889 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 394 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 745 ft.

The land around Zionsville is covered by trees (50%) and grassland (29%) within 2 miles, trees (33%), cropland (28%) and grassland (23%) within 10 miles, and cropland (63%) and trees (24%) within 50 miles.

2 miles
167 ft
10 miles
394 ft
50 miles
745 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Carmel 8.1 mi · Broad Ripple 8.7 mi · Westfield 9.3 mi · Brownsburg 11 mi · Fairfield Heights 11 mi · Lebanon 13 mi · Fishers 13 mi · Indianapolis 14 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 Zionsville (39.9509°, -86.2619°, elevation 843 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).