Westerville weather in July

In July, Westerville sees average daytime highs of 83°F and overnight lows near 65°F, with 3.6 in of rain across 11.4 wet days and about 14.6 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 33% 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 Westerville's 3rd-clearest and 11th-windiest month. For the whole year in context, see Westerville's year-round climate.

Daytime high
83°
1st warmest
Overnight low
65°
12th coldest
Rainfall
3.6 in
11.4 wet days
Daylight
14 h 36 min
5:20 AM – 7:55 PM
Cloud cover
55%
3rd clearest
Wind
6 mph
11th windiest
Solar energy
6.14 kWh/m²
Travel score
5.9
out of 10

Westerville is city in Franklin and Delaware counties, Ohio, United States.

Density
1,175/km²
people per km²
Founded
1858

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 Westerville reaches about 83°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 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)
18264
28264
38265
48265
58265
68265
78365
88365
98365
108365
118365
128365
138365
148365
158366
168366
178366
188366
198366
208366
218366
228366
238366
248366
258366
268365
278365
288365
298265
308265
318265

How July really feels in Westerville

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.

Westerville 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° / 22°3.311.169.50.0
Feb39° / 24°2.79.24.610.40.0
Mar49° / 32°3.811.32.811.71.9
Apr62° / 42°4.512.70.8134.8
May71° / 53°4.413.5014.26.0
Jun80° / 62°4.111.9014.86.2
Jul83° / 65°3.611.4014.65.9
Aug81° / 64°2.99.6013.66.6
Sep75° / 56°2.98.8012.37.1
Oct63° / 45°2.99.20.210.95.6
Nov50° / 35°3.29.61.29.82.3
Dec40° / 27°3.410.23.99.20.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35347
45446
55545
65644
75644
85743
95842
105842
115842
125842
135842
145743
155743
165644
175644
185446
195446
205446
215347
225347
235347
245347
255446
265446
275446
285446
295545
305545
315545

Chance of precipitation in July

Any precipitation

Westerville gets around 3.6 in of rain over 11.4 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 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
237
337
437
536
636
735
835
934
1034
1134
1234
1334
1435
1535
1636
1736
1836
1937
2037
2138
2238
2338
2438
2538
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 32% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162025328
2162025328
3162024328
4152024329
5152024319
6152024319
7152025319
81420253110
91419253110
101319253210
111319263211
121218263211
131218263212
141218263312
151117263312
161117263313
171017263313
181017273314
19917273314
20917273314
21917273314
22818273314
23818273314
24818273313
25819273313
26819283213
27820283212
28820293211
29921293111
30921293010
311021293010

Wind in July

Winds average 6 mph in July.

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

0246810151015202531
Wind speed (mph)Feels
16calm
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 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 5:10 AM to 5:32 AM, and sunset from 8:00 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.85:108:00
214.85:118:00
314.85:118:00
414.85:127:59
514.85:127:59
614.85:137:59
714.85:137:59
814.75:147:58
914.75:157:58
1014.75:157:58
1114.75:167:57
1214.75:177:57
1314.75:177:57
1414.65:187:56
1514.65:197:56
1614.65:207:55
1714.65:207:55
1814.55:217:54
1914.55:227:53
2014.55:237:53
2114.55:247:52
2214.45:247:51
2314.45:257:50
2414.45:267:50
2514.45:277:49
2614.35:287:48
2714.35:297:47
2814.35:307:46
2914.25:317:45
3014.25:317:44
3114.25:327:43

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.14 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 6.22 kWh/m² in June across the year — July's 6.14 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.0Intense
226.0Intense
236.0Intense
246.0Bright
256.0Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in July

Is July a good time to visit Westerville?

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

5.9
Sightseeing
5th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Westerville in July

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

In July, Westerville sees daytime highs around 83°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

UV index in Westerville 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 Westerville peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 21UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Westerville 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 Westerville 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).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Moderate
Apr12Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Westerville?

Westerville sits at 40.1°N, 82.9°W, 869 ft above sea level, in United States. The nearest listed city is Gahanna, 8.1 mi away.

Topography around Westerville

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

Within 2 miles, the terrain around Westerville has only modest variations in elevation — a maximum elevation change of 210 ft around an average of 873 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 538 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,033 ft.

The land around Westerville is covered by trees (49%) and artificial surfaces (30%) within 2 miles, trees (46%) and grassland (22%) within 10 miles, and cropland (49%) and trees (32%) within 50 miles.

2 miles
210 ft
10 miles
538 ft
50 miles
1,033 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Gahanna 8.1 mi · Dublin 9.9 mi · Whitehall 11 mi · Upper Arlington 12 mi · Columbus 12 mi · Reynoldsburg 14 mi · Hilliard 14 mi · Delaware 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 Westerville (40.1262°, -82.9291°, elevation 869 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).