New Castle weather in July

In July, New Castle sees average daytime highs of 82°F and overnight lows near 66°F, with 3.4 in of rain across 11.4 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 82°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 New Castle's 3rd-clearest and 11th-windiest month. For the whole year in context, see New Castle's year-round climate.

Daytime high
82°
1st warmest
Overnight low
66°
12th coldest
Rainfall
3.4 in
11.4 wet days
Daylight
14 h 36 min
5:30 AM – 8:04 PM
Cloud cover
55%
3rd clearest
Wind
7 mph
11th windiest
Solar energy
6.27 kWh/m²
Travel score
6.1
out of 10

New Castle is city in Indiana, United States.

Density
930/km²
people per km²
Founded
1822

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 New Castle reaches about 82°F in the afternoon and slips back to 66°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 89°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)
18265
28265
38265
48265
58265
68266
78266
88266
98266
108266
118266
128266
138366
148366
158366
168366
178366
188366
198366
208366
218266
228266
238266
248266
258266
268266
278266
288266
298265
308265
318265

How July really feels in New Castle

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.

New Castle 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°3.29.85.39.50.0
Feb38° / 24°2.68.84.610.40.0
Mar49° / 32°3.810.92.711.72.0
Apr62° / 43°4.712.50.7134.8
May71° / 53°4.613.6014.26.0
Jun79° / 63°4.212.2014.86.2
Jul82° / 66°3.411.4014.56.1
Aug81° / 64°3.09.8013.66.6
Sep76° / 56°2.97.9012.37.2
Oct63° / 45°3.28.80.210.95.7
Nov50° / 35°3.48.71.19.82.3
Dec39° / 26°3.210.33.99.20.1

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 (%)
15446
25446
35545
45545
55644
65644
75644
85644
95644
105743
115644
125644
135644
145644
155545
165545
175446
185446
195446
205347
215347
225347
235347
245446
255446
265545
275545
285545
295644
305545
315644

Chance of precipitation in July

Any precipitation

New Castle gets around 3.4 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 37% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
437
537
637
737
836
936
1036
1136
1236
1336
1436
1537
1637
1737
1837
1937
2037
2138
2238
2338
2437
2537
2637
2737
2836
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 48% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11419233310
21419233311
31419233311
41419233312
51319233312
61319233212
71319233213
81219233213
91218233314
101118233314
111118233315
121018233316
131017233316
141017233317
15917223318
16917223318
17917223319
18817223320
19817223220
20817223221
21818223121
22718223121
23719223021
24720223021
25720232921
26721232820
27722242720
28722252619
29823252618
30823262518
31923262517

Wind in July

Winds average 7 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
137calm
147calm
157calm
167calm
177calm
187calm
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 5:21 AM to 5:43 AM, and sunset from 8:09 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.85:218:09
214.85:218:09
314.85:228:09
414.85:228:09
514.85:238:08
614.75:238:08
714.75:248:08
814.75:248:08
914.75:258:07
1014.75:268:07
1114.75:268:07
1214.75:278:06
1314.65:288:06
1414.65:288:05
1514.65:298:05
1614.65:308:04
1714.65:318:04
1814.55:318:03
1914.55:328:03
2014.55:338:02
2114.55:348:01
2214.45:358:00
2314.45:368:00
2414.45:367:59
2514.35:377:58
2614.35:387:57
2714.35:397:56
2814.35:407:55
2914.25:417:55
3014.25:427:54
3114.25:437:53

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.27 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 6.27 kWh/m² in July across the year — July's 6.27 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
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in July

Is July a good time to visit New Castle?

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
6.7
Beach & pool
2nd-best month of the year

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

What to pack for New Castle in July

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

In July, New Castle sees daytime highs around 82°F and nights near 66°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in New Castle 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 New Castle peaks around June 20 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 20UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in New Castle 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 New Castle 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 1317 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Good
Apr12Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is New Castle?

New Castle sits at 39.9°N, 85.4°W, 1,063 ft above sea level, in United States. The nearest listed city is Muncie, 18 mi away.

Topography around New Castle

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

Within 2 miles, the terrain around New Castle has only modest variations in elevation — a maximum elevation change of 187 ft around an average of 1,050 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 338 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 860 ft.

The land around New Castle is covered by trees (38%), cropland (22%) and grassland (21%) within 2 miles, cropland (68%) within 10 miles, and cropland (69%) and trees (20%) within 50 miles.

2 miles
187 ft
10 miles
338 ft
50 miles
860 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Muncie 18 mi · Anderson 21 mi · Greenfield 24 mi · Richmond 26 mi · Fishers 34 mi · Noblesville 35 mi · Lawrence 35 mi · Shelbyville 35 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 New Castle (39.9289°, -85.3702°, elevation 1,063 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).