Newton weather in July

In July, Newton sees average daytime highs of 83°F and overnight lows near 65°F, with 3.9 in of rain across 10 wet days and about 14.7 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 40% 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 Newton's 3rd-clearest and 11th-windiest month. For the whole year in context, see Newton's year-round climate.

Daytime high
83°
1st warmest
Overnight low
65°
12th coldest
Rainfall
3.9 in
10 wet days
Daylight
14 h 42 min
4:55 AM – 7:40 PM
Cloud cover
50%
3rd clearest
Wind
7 mph
11th windiest
Solar energy
6.45 kWh/m²
Travel score
6.0
out of 10

Newton is city in and the county seat of Jasper County, Iowa, United States.

Density
519/km²
people per km²
Founded
1850

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 Newton 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 91°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)
18265
28265
38265
48265
58365
68365
78365
88365
98366
108366
118366
128366
138366
148366
158366
168366
178366
188366
198366
208366
218366
228366
238366
248365
258365
268365
278365
288365
298365
308265
318265

How July really feels in Newton

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.

Newton 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
Jan29° / 13°1.36.64.89.30.0
Feb34° / 17°1.66.64.710.30.0
Mar47° / 29°2.78.82.711.71.6
Apr60° / 40°4.411.2113.14.7
May71° / 52°5.413.50.114.36.0
Jun80° / 62°5.211.60156.3
Jul83° / 65°3.910014.76.0
Aug81° / 63°4.09.4013.76.7
Sep75° / 55°3.88.3012.37.2
Oct62° / 42°2.98.30.410.95.5
Nov47° / 30°2.26.91.69.61.7
Dec34° / 19°1.66.44.390.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% 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 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85842
95842
105743
115842
125842
135842
145842
155842
165941
175941
185941
195941
205941
215941
226040
236040
246040
256040
266040
276040
286040
296040
306040
316040

Chance of precipitation in July

Any precipitation

Newton gets around 3.9 in of rain over 10 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
233
333
433
533
633
733
833
933
1033
1133
1233
1333
1433
1533
1633
1733
1833
1933
2033
2133
2233
2332
2432
2532
2631
2731
2831
2931
3031
3131

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 30% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19192431170
29192430170
38192530180
48192530180
57182530190
67182531191
76172531201
86172532201
96162532201
105152433212
115142433222
125142433222
134142433232
144132433233
154132432233
164132432243
174132431243
184132431243
194132431243
204132530243
214142529243
225142528243
235152528243
245162627243
255162726233
265172726233
275182825222
285182825212
296182925202
306182925202
316182925192

Wind in July

Winds average 7 mph in July.

Across July, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
87light breeze
97light breeze
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 4:46 AM to 5:09 AM, and sunset from 7:45 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.04:467:45
215.04:467:45
315.04:477:45
415.04:477:45
514.94:487:45
614.94:487:44
714.94:497:44
814.94:507:44
914.94:507:44
1014.94:517:43
1114.94:527:43
1214.84:527:42
1314.84:537:42
1414.84:547:41
1514.84:557:41
1614.74:557:40
1714.74:567:40
1814.74:577:39
1914.74:587:38
2014.64:597:38
2114.65:007:37
2214.65:017:36
2314.65:017:35
2414.55:027:34
2514.55:037:33
2614.55:047:33
2714.45:057:32
2814.45:067:31
2914.45:077:30
3014.35:087:29
3114.35:097:28

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.45 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.78 kWh/m² to a high of 6.45 kWh/m² in July across the year — July's 6.45 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in July

Is July a good time to visit Newton?

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

6.0
Sightseeing
4th-best month of the year
7.0
Beach & pool
1st-best month of the year

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

What to pack for Newton in July

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

In July, Newton sees daytime highs around 83°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 Newton 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 Newton peaks around June 19 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 19UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Newton 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 Newton 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).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1916 µg/m³Oct 218 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr11Good
May12Good
Jun13Moderate
Jul16Moderate
Aug15Moderate
Sep12Good
Oct7Good
Nov9Good
Dec10Good
Location & terrain

Where is Newton?

Newton sits at 41.7°N, 93.0°W, 951 ft above sea level, in United States. The nearest listed city is Altoona, 22 mi away.

Topography around Newton

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

Within 2 miles, the terrain around Newton has only modest variations in elevation — a maximum elevation change of 200 ft around an average of 922 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 282 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 587 ft.

The land around Newton is covered by grassland (28%), cropland (26%) and trees (25%) within 2 miles, cropland (73%) within 10 miles, and cropland (68%) within 50 miles.

2 miles
200 ft
10 miles
282 ft
50 miles
587 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Altoona 22 mi · Marshalltown 25 mi · Ankeny 29 mi · Des Moines 30 mi · Johnston 34 mi · Urbandale 35 mi · West Des Moines 35 mi · Indianola 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 Newton (41.6997°, -93.048°, elevation 951 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).