Altoona weather in July

In July, Altoona sees average daytime highs of 84°F and overnight lows near 66°F, with 3.8 in of rain across 9.5 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 84°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 Altoona's 3rd-clearest and 11th-windiest month. For the whole year in context, see Altoona's year-round climate.

Daytime high
84°
1st warmest
Overnight low
66°
12th coldest
Rainfall
3.8 in
9.5 wet days
Daylight
14 h 42 min
4:57 AM – 7:42 PM
Cloud cover
50%
3rd clearest
Wind
7 mph
11th windiest
Solar energy
6.46 kWh/m²
Travel score
5.8
out of 10

Altoona is city in Polk County, Iowa, United States.

Density
699/km²
people per km²
Founded
1876

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 84°F through the month.

A typical July day in Altoona reaches about 84°F in the afternoon and slips back to 66°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 92°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)
18365
28365
38365
48365
58366
68366
78366
88366
98466
108466
118466
128466
138466
148466
158466
168467
178467
188466
198466
208466
218466
228466
238466
248466
258466
268366
278365
288365
298365
308365
318365

How July really feels in Altoona

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.

Altoona 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°1.26.34.99.30.0
Feb34° / 17°1.56.54.710.30.0
Mar47° / 29°2.68.82.811.71.7
Apr61° / 40°4.411.20.913.14.7
May71° / 52°5.513.70.114.36.0
Jun80° / 62°5.011.90156.2
Jul84° / 66°3.89.5014.75.8
Aug82° / 63°4.09.5013.76.6
Sep75° / 55°3.68.3012.37.2
Oct62° / 42°2.98.10.410.95.6
Nov47° / 30°2.16.71.39.71.8
Dec34° / 19°1.65.94.190.0

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 20% of July, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45842
55842
65842
75842
85941
95941
106040
115941
125941
136040
146040
156040
166139
176139
186139
196139
206238
216238
226238
236139
246139
256139
266238
276139
286139
296139
306139
316139

Chance of precipitation in July

Any precipitation

Altoona gets around 3.8 in of rain over 9.5 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 31% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
134
234
333
433
533
633
732
832
932
1032
1132
1232
1331
1431
1531
1631
1731
1831
1931
2030
2130
2230
2330
2429
2529
2629
2728
2828
2928
3028
3128

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 54% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
18192432160
28192432170
37192432170
47192432180
56192432180
66182432191
76172433191
85162433201
95152434201
105152434212
114142435212
124132435222
134132435223
144122434233
154122434233
164122433234
174122433234
184122432234
194132432234
204132431234
214132531234
224142530234
234152629234
244162628224
254162727224
264172827213
274182926203
285182926203
295183026192
305193025192
315193026182

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 4:48 AM to 5:11 AM, and sunset from 7:47 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.04:487:47
215.04:487:47
315.04:497:47
415.04:497:46
514.94:507:46
614.94:507:46
714.94:517:46
814.94:517:45
914.94:527:45
1014.94:537:45
1114.84:537:44
1214.84:547:44
1314.84:557:43
1414.84:567:43
1514.84:567:42
1614.74:577:42
1714.74:587:41
1814.74:597:40
1914.75:007:40
2014.65:017:39
2114.65:017:38
2214.65:027:38
2314.65:037:37
2414.55:047:36
2514.55:057:35
2614.55:067:34
2714.45:077:33
2814.45:087:32
2914.45:097:31
3014.35:107:30
3114.35:117:29

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.46 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.79 kWh/m² to a high of 6.46 kWh/m² in July across the year — July's 6.46 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
176.5Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
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 Altoona?

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

5.8
Sightseeing
5th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Altoona in July

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

In July, Altoona sees daytime highs around 84°F and nights near 66°F. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Altoona 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 Altoona 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 20UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Altoona 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 Altoona 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 2016 µg/m³Oct 217 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr11Good
May11Good
Jun12Moderate
Jul16Moderate
Aug14Moderate
Sep12Good
Oct7Good
Nov9Good
Dec10Good
Location & terrain

Where is Altoona?

Altoona sits at 41.6°N, 93.5°W, 955 ft above sea level, in United States. The nearest listed city is Des Moines, 8.1 mi away.

Topography around Altoona

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

Within 2 miles, the terrain around Altoona has only modest variations in elevation — a maximum elevation change of 144 ft around an average of 938 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 266 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 653 ft.

The land around Altoona is covered by grassland (32%), cropland (28%) and artificial surfaces (22%) within 2 miles, cropland (46%), grassland (22%) and trees (20%) within 10 miles, and cropland (64%) within 50 miles.

2 miles
144 ft
10 miles
266 ft
50 miles
653 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Des Moines 8.1 mi · Ankeny 9.3 mi · Johnston 12 mi · Urbandale 13 mi · West Des Moines 14 mi · Clive 14 mi · Indianola 21 mi · Waukee 22 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 Altoona (41.6442°, -93.4647°, elevation 955 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).