Shelbyville weather in September

In September, Shelbyville sees average daytime highs of 79°F and overnight lows near 60°F, with 3.2 in of rain across 8.2 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 83°F in the first days to 75°F by the end. The sky is clear or mostly clear about 43% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Shelbyville's 1st-clearest and 9th-windiest month. For the whole year in context, see Shelbyville's year-round climate.

Daytime high
79°
4th warmest
Overnight low
60°
9th coldest
Rainfall
3.2 in
8.2 wet days
Daylight
12 h 12 min
6:28 AM – 6:43 PM
Cloud cover
49%
1st clearest
Wind
5 mph
9th windiest
Solar energy
4.62 kWh/m²
Travel score
6.9
out of 10

Shelbyville is city in Shelby County, Kentucky, United States.

Density
698/km²
people per km²
Founded
1792

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 83°F in the first days to 75°F by the end.

A typical September day in Shelbyville reaches about 79°F in the afternoon and slips back to 60°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 89°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18465
28465
38365
48364
58364
68364
78263
88263
98262
108162
118162
128161
138061
148060
158060
167960
177959
187959
197858
207858
217858
227757
237757
247656
257656
267656
277555
287555
297555
307454

How September really feels in Shelbyville

Once humidity and wind are folded in, September 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

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

Shelbyville weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 27°3.710.43.39.60.1
Feb46° / 30°3.69.6310.51.1
Mar55° / 37°4.611.91.511.73.4
Apr66° / 47°5.112.50.3135.6
May75° / 57°5.113.70146.2
Jun83° / 66°4.212.6014.65.5
Jul86° / 69°4.112.1014.44.8
Aug85° / 67°3.010.1013.55.3
Sep79° / 60°3.28.2012.36.9
Oct67° / 48°3.48.20116.5
Nov55° / 38°3.69.10.69.93.5
Dec45° / 31°4.3112.49.41.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35941
46040
56040
66040
76040
86040
95941
105941
115941
125941
135842
145743
155842
165842
175842
185842
195842
205842
215842
225842
235941
246040
256040
266139
276139
286139
296139
306139

Chance of precipitation in September

Any precipitation

Shelbyville gets around 3.2 in of rain over 8.2 wet days in September. 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 29% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
329
429
528
628
727
826
926
1025
1125
1225
1325
1425
1526
1626
1726
1827
1927
2028
2128
2228
2328
2428
2528
2628
2728
2827
2927
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11119223116
21220223115
31321233013
41421232912
51622232911
61723232810
7192323278
8202423267
9222423256
10232423246
11252423235
12272424224
13282423214
14302323203
15322323193
16342322183
17362222172
18382221172
19402121162
20422120152
21442119142
22472018141
23492017131
24512016121
25521916121
26541915111
27561914101
28571913101
2958191391
3059191291

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over September. Sunrise moves from 6:15 AM to 6:41 AM, and sunset from 7:07 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:157:07
212.86:157:05
312.86:167:04
412.76:177:02
512.76:187:00
612.76:196:59
712.66:206:57
812.66:216:56
912.56:226:54
1012.56:236:52
1112.56:236:51
1212.46:246:49
1312.46:256:47
1412.36:266:46
1512.36:276:44
1612.26:286:43
1712.26:296:41
1812.26:306:39
1912.16:316:38
2012.16:326:36
2112.06:326:34
2212.06:336:33
2311.96:346:31
2411.96:356:29
2511.96:366:28
2611.86:376:26
2711.86:386:25
2811.76:396:23
2911.76:406:21
3011.76:416:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 1.78 kWh/m² to a high of 6.19 kWh/m² in June across the year — September's 4.62 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
65.0Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
Planning a trip in September

Is September a good time to visit Shelbyville?

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

6.9
Sightseeing
1st-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Shelbyville in September

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

In September, Shelbyville sees daytime highs around 79°F and nights near 60°F. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Shelbyville in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Shelbyville peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 22UV 9Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Shelbyville in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Shelbyville is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1418 µg/m³Dec 118 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr11Good
May15Moderate
Jun17Moderate
Jul19Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Shelbyville?

Shelbyville sits at 38.2°N, 85.2°W, 761 ft above sea level, in United States. The nearest listed city is Jeffersontown, 19 mi away.

Topography around Shelbyville

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

Within 2 miles, the terrain around Shelbyville has only modest variations in elevation — a maximum elevation change of 148 ft around an average of 755 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 669 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,030 ft.

The land around Shelbyville is covered by grassland (34%) and trees (30%) within 2 miles, grassland (39%), trees (31%) and cropland (28%) within 10 miles, and trees (53%) and grassland (33%) within 50 miles.

2 miles
148 ft
10 miles
669 ft
50 miles
1,030 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Jeffersontown 19 mi · Frankfort 19 mi · Fern Creek 20 mi · Highview 22 mi · Saint Matthews 24 mi · Newburg 24 mi · Okolona 25 mi · Jeffersonville 28 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 Shelbyville (38.212°, -85.2236°, elevation 761 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).