Seymour weather in August

In August, Seymour sees average daytime highs of 84°F and overnight lows near 66°F, with 3.1 in of rain across 9.3 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 10th-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 38% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Seymour's 2nd-clearest and 12th-windiest month. For the whole year in context, see Seymour's year-round climate.

Daytime high
84°
2nd warmest
Overnight low
66°
11th coldest
Rainfall
3.1 in
9.3 wet days
Daylight
13 h 30 min
6:02 AM – 7:34 PM
Cloud cover
53%
2nd clearest
Wind
5 mph
12th windiest
Solar energy
5.68 kWh/m²
Travel score
5.6
out of 10

Seymour is city in Indiana, United States.

Density
629/km²
people per km²
Founded
1852

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 84°F through the month.

A typical August day in Seymour 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 77°F and 91°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18568
28567
38567
48567
58567
68567
78567
88567
98567
108567
118567
128467
138467
148467
158466
168466
178466
188466
198466
208466
218466
228466
238466
248466
258466
268465
278465
288465
298465
308365
318365

How August really feels in Seymour

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.

Seymour weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 25°3.39.33.49.60.0
Feb43° / 27°3.08.43.410.50.6
Mar53° / 36°4.2111.711.73.0
Apr65° / 46°4.912.50.2135.5
May74° / 56°5.112.7014.16.3
Jun82° / 65°4.211.6014.75.7
Jul86° / 68°3.511.4014.55.0
Aug84° / 66°3.19.3013.55.6
Sep79° / 59°2.98.1012.37.0
Oct66° / 47°3.28.10116.3
Nov53° / 37°3.49.10.89.93.1
Dec43° / 29°3.69.92.99.30.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45842
55842
65743
75743
85644
95644
105545
115545
125545
135545
145545
155644
165644
175644
185743
195743
205842
215842
225743
235842
245842
255941
265941
275941
285941
296040
306040
316040

Chance of precipitation in August

Any precipitation

Seymour gets around 3.1 in of rain over 9.3 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 34% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
134
233
333
433
533
633
732
832
932
1032
1132
1232
1332
1432
1531
1630
1730
1829
1929
2028
2128
2228
2328
2428
2528
2628
2728
2827
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 28% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16172329240
27172329231
37172329231
47182329221
57182329221
67182329211
77182329211
88192328211
98192328212
108192327212
119192326212
129192326212
139192326212
149192426202
159192426202
169192526202
179192526192
189192526192
199192526192
209192527192
219192527191
229182528191
239182428191
249182429191
2510182429181
2610182329181
2711192330170
2812192230170
2913192230160
3014202129160
3114202129150

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 h 06 min 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 72 minutes over August. Sunrise moves from 5:48 AM to 6:16 AM, and sunset from 7:51 PM to 7:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:487:51
214.05:497:50
314.05:507:49
414.05:517:48
513.95:517:47
613.95:527:46
713.95:537:45
813.85:547:44
913.85:557:43
1013.85:567:41
1113.75:577:40
1213.75:587:39
1313.65:597:38
1413.66:007:36
1513.66:017:35
1613.56:027:34
1713.56:037:32
1813.56:037:31
1913.46:047:30
2013.46:057:28
2113.36:067:27
2213.36:077:25
2313.36:087:24
2413.26:097:22
2513.26:107:21
2613.16:117:19
2713.16:127:18
2813.16:137:16
2913.06:147:15
3013.06:157:13
3112.96:167:12

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 1.73 kWh/m² to a high of 6.23 kWh/m² in June across the year — August's 5.68 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
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
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
315.2Bright
Planning a trip in August

Is August a good time to visit Seymour?

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

5.6
Sightseeing
5th-best month of the year
7.2
Beach & pool
1st-best month of the year

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

What to pack for Seymour in August

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

In August, Seymour sees daytime highs around 84°F and nights near 66°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Seymour in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Seymour peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Seymour 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 Seymour is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1316 µg/m³Oct 237 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr11Good
May13Moderate
Jun15Moderate
Jul17Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Seymour?

Seymour sits at 39.0°N, 85.9°W, 604 ft above sea level, in United States. The nearest listed city is Columbus, 17 mi away.

Topography around Seymour

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

Within 2 miles, the terrain around Seymour has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 587 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 489 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 810 ft.

The land around Seymour is covered by cropland (35%), grassland (25%) and artificial surfaces (22%) within 2 miles, cropland (53%) and trees (32%) within 10 miles, and trees (53%) and cropland (32%) within 50 miles.

2 miles
98 ft
10 miles
489 ft
50 miles
810 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Columbus 17 mi · Bloomington 37 mi · Franklin 37 mi · Shelbyville 39 mi · Clarksville 47 mi · New Albany 47 mi · Greenwood 47 mi · Jeffersonville 48 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 Seymour (38.9592°, -85.8902°, elevation 604 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).