Seymour weather in May

In May, Seymour sees average daytime highs of 74°F and overnight lows near 56°F, with 5.1 in of rain across 12.7 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 70°F in the first days to 78°F by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Seymour's 8th-clearest and 8th-windiest month. For the whole year in context, see Seymour's year-round climate.

Daytime high
74°
5th warmest
Overnight low
56°
8th coldest
Rainfall
5.1 in
12.7 wet days
Daylight
14 h 06 min
5:36 AM – 7:43 PM
Cloud cover
64%
8th clearest
Wind
7 mph
8th windiest
Solar energy
5.74 kWh/m²
Travel score
6.3
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 70°F in the first days to 78°F by the end.

A typical May day in Seymour reaches about 74°F in the afternoon and slips back to 56°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 85°F. Set against its neighbours, May runs about 9°F warmer than April and about 8°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16951
27052
37052
47153
57153
67153
77254
87254
97254
107355
117355
127355
137356
147356
157456
167456
177457
187457
197557
207558
217558
227658
237659
247659
257759
267760
277760
287860
297861
307861
317961

How May really feels in Seymour

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33862
43961
53961
63961
73862
83862
93961
103961
113961
123862
133961
143961
154060
163961
173961
183862
193961
204060
214060
224060
234060
244060
254159
264060
274159
284159
294258
304258
314258

Chance of precipitation in May

Any precipitation

Seymour gets around 5.1 in of rain over 12.7 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
241
341
441
541
641
741
841
941
1041
1141
1241
1341
1441
1541
1641
1741
1841
1941
2041
2141
2241
2341
2441
2541
2640
2740
2840
2940
3040
3140

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
174151010
272161110
370161220
468171320
565181430
664181530
762191540
861191640
959191750
1058191760
1156191870
1256191870
1354191980
1454181990
15521820100
16511820110
17511720120
18501720131
19491621131
20481621141
21461621151
22451622161
23441622171
24431622181
25421622192
26401722192
27391722202
28381722202
29371822212
30361822212
31351923222

Wind in May

Winds average 7 mph in May.

Across May, daily wind ranges from about 6 mph on the calmest days to 7 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
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:52 AM to 5:26 AM, and sunset from 7:29 PM to 7:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:527:29
213.65:517:30
313.75:507:31
413.75:497:32
513.85:487:33
613.85:467:34
713.85:457:35
813.95:447:36
913.95:437:37
1013.95:427:38
1114.05:417:39
1214.05:407:40
1314.05:397:41
1414.15:387:42
1514.15:377:43
1614.15:367:43
1714.25:357:44
1814.25:347:45
1914.25:347:46
2014.25:337:47
2114.35:327:48
2214.35:317:49
2314.35:317:50
2414.35:307:50
2514.45:297:51
2614.45:297:52
2714.45:287:53
2814.45:277:54
2914.55:277:55
3014.55:267:55
3114.55:267:56

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.74 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 — May's 5.74 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.6Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Bright
286.0Bright
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Is May a good time to visit Seymour?

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

6.3
Sightseeing
2nd-best month of the year
5.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Seymour for sightseeing.

What to pack for Seymour in May

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

In May, Seymour sees daytime highs around 74°F and nights near 56°F. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Seymour in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).