Indianola weather in August

In August, Indianola sees average daytime highs of 83°F and overnight lows near 64°F, with 3.5 in of rain across 9.4 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 6th-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 44% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Indianola's 2nd-clearest and 12th-windiest month. For the whole year in context, see Indianola's year-round climate.

Daytime high
83°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.5 in
9.4 wet days
Daylight
13 h 42 min
5:28 AM – 7:09 PM
Cloud cover
49%
2nd clearest
Wind
7 mph
12th windiest
Solar energy
5.68 kWh/m²
Travel score
6.4
out of 10

Indianola is city in Warren County, Iowa, United States.

Density
531/km²
people per km²
Founded
1849

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 83°F through the month.

A typical August day in Indianola reaches about 83°F in the afternoon and slips back to 64°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 91°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18466
28465
38365
48365
58365
68365
78365
88365
98365
108364
118364
128364
138364
148264
158264
168264
178264
188264
198264
208264
218264
228264
238263
248263
258263
268263
278263
288263
298262
308162
318162

How August really feels in Indianola

Once humidity and wind are folded in, August 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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Indianola weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan31° / 15°1.26.14.49.40.0
Feb35° / 19°1.66.64.610.30.0
Mar49° / 30°2.792.511.72.0
Apr61° / 41°4.311.2113.14.9
May71° / 53°5.313.20.114.36.1
Jun81° / 63°4.911.6014.96.1
Jul84° / 67°3.89.8014.75.6
Aug83° / 64°3.59.4013.76.4
Sep76° / 55°3.68.3012.37.2
Oct63° / 43°2.87.80.310.95.8
Nov48° / 31°2.16.81.49.72.0
Dec36° / 20°1.663.79.10.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26436
36436
46535
56535
66535
76535
86337
96337
106337
116337
126337
136337
146337
156238
166238
176238
186238
196238
206238
216337
226337
236337
246337
256436
266436
276436
286436
296634
306634
316634

Chance of precipitation in August

Any precipitation

Indianola gets around 3.5 in of rain over 9.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
831
931
1031
1131
1231
1331
1431
1531
1631
1731
1831
1931
2031
2131
2230
2330
2430
2529
2628
2728
2828
2927
3027
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 44% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16193025191
26183025191
37183026181
47182926181
57182926181
68182926171
78182927171
89172927171
99172927161
1010172928161
1110172828161
1210172828151
1311172829151
1411172829141
1511172730141
1611172730131
1711172731131
1812172632131
1911172633120
2011182533120
2111182534120
2211182534120
2311192434110
2412192434110
2512202433110
2613202433110
2713212332100
2815212331100
291622233090
301722232990
311923222880

Wind in August

Winds average 7 mph in August, the calmest month.

Across August, 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:13 AM to 5:44 AM, and sunset from 7:28 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:137:28
214.25:147:27
314.25:157:25
414.15:167:24
514.15:177:23
614.15:187:22
714.05:197:21
814.05:207:19
914.05:217:18
1013.95:227:17
1113.95:237:15
1213.85:247:14
1313.85:257:13
1413.85:267:11
1513.75:277:10
1613.75:287:09
1713.65:297:07
1813.65:307:06
1913.55:317:04
2013.55:327:03
2113.55:337:01
2213.45:346:59
2313.45:356:58
2413.35:366:56
2513.35:386:55
2613.25:396:53
2713.25:406:51
2813.25:416:50
2913.15:426:48
3013.15:436:46
3113.05:446:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.68 kWh/m².

For context, solar energy here swings from a low near 1.84 kWh/m² to a high of 6.47 kWh/m² in July across the year — August's 5.68 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Bright
75.9Bright
85.9Bright
95.9Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in August

Is August a good time to visit Indianola?

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

6.4
Sightseeing
2nd-best month of the year
7.1
Beach & pool
2nd-best month of the year

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

What to pack for Indianola in August

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

In August, Indianola sees daytime highs around 83°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Indianola in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Indianola 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 highHighModerateJun 20UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Indianola in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Indianola is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1915 µg/m³Oct 217 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb14Moderate
Mar13Moderate
Apr10Good
May11Good
Jun12Moderate
Jul16Moderate
Aug14Moderate
Sep12Good
Oct7Good
Nov8Good
Dec10Good
Location & terrain

Where is Indianola?

Indianola sits at 41.4°N, 93.6°W, 968 ft above sea level, in United States. The nearest listed city is Des Moines, 17 mi away.

Topography around Indianola

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

Within 2 miles, the terrain around Indianola has only modest variations in elevation — a maximum elevation change of 190 ft around an average of 912 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 305 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 741 ft.

The land around Indianola is covered by grassland (34%), trees (25%) and cropland (24%) within 2 miles, cropland (43%), grassland (30%) and trees (25%) within 10 miles, and cropland (53%) and grassland (26%) within 50 miles.

2 miles
190 ft
10 miles
305 ft
50 miles
741 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Des Moines 17 mi · West Des Moines 17 mi · Clive 19 mi · Urbandale 21 mi · Altoona 21 mi · Johnston 23 mi · Waukee 24 mi · Ankeny 26 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 Indianola (41.358°, -93.5574°, elevation 968 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).