Evansville weather in August

In August, Evansville sees average daytime highs of 86°F and overnight lows near 69°F, with 3.0 in of rain across 8.2 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 86°F through the month. The sky is clear or mostly clear about 41% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Evansville's 3rd-clearest and 12th-windiest month. For the whole year in context, see Evansville's year-round climate.

Daytime high
86°
2nd warmest
Overnight low
69°
11th coldest
Rainfall
3.0 in
8.2 wet days
Daylight
13 h 30 min
5:10 AM – 6:39 PM
Cloud cover
51%
3rd clearest
Wind
5 mph
12th windiest
Solar energy
5.77 kWh/m²
Travel score
5.2
out of 10

Evansville is county seat of Vanderburgh County, Indiana, United States.

Density
968/km²
people per km²
Founded
1817

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 86°F through the month.

A typical August day in Evansville reaches about 86°F in the afternoon and slips back to 69°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 93°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18770
28770
38770
48770
58770
68770
78770
88670
98670
108669
118669
128669
138669
148669
158669
168669
178669
188669
198669
208669
218669
228669
238669
248668
258668
268668
278668
288668
298568
308567
318567

How August really feels in Evansville

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.

Evansville weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 27°3.79.12.29.70.2
Feb46° / 30°3.392.710.51.3
Mar56° / 39°4.411.61.111.73.8
Apr68° / 49°5.1120.1135.9
May76° / 59°4.8130146.3
Jun85° / 68°3.911.4014.65.3
Jul87° / 71°3.410.4014.44.7
Aug86° / 69°3.08.2013.55.2
Sep80° / 61°3.27.7012.36.9
Oct69° / 49°3.580.1116.8
Nov55° / 39°3.78.90.69.93.8
Dec45° / 31°4.010.229.41.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55941
65941
75941
85842
95743
105743
115743
125743
135743
145743
155743
165842
175842
185842
195842
205941
215842
225941
235941
245941
255941
266040
275941
286040
296139
306139
316139

Chance of precipitation in August

Any precipitation

Evansville gets around 3.0 in of rain over 8.2 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
629
729
829
929
1029
1128
1228
1328
1428
1527
1627
1726
1826
1925
2025
2125
2225
2325
2425
2525
2625
2725
2824
2924
3024
3124

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 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12132228322
23132228322
33132228312
43132328312
53132328302
63132428302
74132428292
84132428292
94132428293
104132328293
115132328283
125132328283
135132328283
145132329273
155132329273
165132429263
175132429263
185132430262
195132430262
205132430262
215132431262
225132431271
235122331271
245122331271
255132332261
266132332261
276132332260
287142332250
297142232240
308152231230
319162231220

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 4:57 AM to 5:23 AM, and sunset from 6:56 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.04:576:56
214.04:586:55
313.94:586:54
413.94:596:53
513.95:006:52
613.85:016:51
713.85:026:50
813.85:036:49
913.75:046:47
1013.75:056:46
1113.75:056:45
1213.65:066:44
1313.65:076:43
1413.65:086:41
1513.55:096:40
1613.55:106:39
1713.45:116:37
1813.45:126:36
1913.45:136:35
2013.35:136:33
2113.35:146:32
2213.35:156:31
2313.25:166:29
2413.25:176:28
2513.15:186:26
2613.15:196:25
2713.15:206:23
2813.05:216:22
2913.05:216:20
3012.95:226:19
3112.95:236:17

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.77 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 6.43 kWh/m² in June across the year — August's 5.77 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in August

Is August a good time to visit Evansville?

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

5.2
Sightseeing
6th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Evansville in August

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

In August, Evansville sees daytime highs around 86°F and nights near 69°F. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Evansville 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 Evansville peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 11UV 9Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Evansville 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 Evansville is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1419 µg/m³Oct 239 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar13Moderate
Apr12Moderate
May15Moderate
Jun18Moderate
Jul19Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Evansville?

Evansville sits at 38.0°N, 87.6°W, 387 ft above sea level, in United States. The nearest listed city is Henderson, 9.9 mi away.

Topography around Evansville

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

Within 2 miles, the terrain around Evansville has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 384 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 302 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 853 ft.

The land around Evansville is covered by artificial surfaces (50%) and trees (30%) within 2 miles, trees (39%) and cropland (34%) within 10 miles, and cropland (53%) and trees (36%) within 50 miles.

2 miles
115 ft
10 miles
302 ft
50 miles
853 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Henderson 9.9 mi · Owensboro 28 mi · Jasper 45 mi · Madisonville 45 mi · Vincennes 48 mi · Hopkinsville 76 mi · Mount Vernon 77 mi · Marion 77 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 Evansville (37.9748°, -87.5559°, elevation 387 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).