Jeffersontown weather in May

In May, Jeffersontown sees average daytime highs of 75°F and overnight lows near 57°F, with 5.0 in of rain across 13.2 wet days and about 14 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 71°F in the first days to 79°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 24 min by month's end. Set against the rest of the year, May is Jeffersontown's 8th-clearest and 8th-windiest month. For the whole year in context, see Jeffersontown's year-round climate.

Daytime high
75°
5th warmest
Overnight low
57°
8th coldest
Rainfall
5.0 in
13.2 wet days
Daylight
14 h 06 min
5:37 AM – 7:40 PM
Cloud cover
64%
8th clearest
Wind
6 mph
8th windiest
Solar energy
5.74 kWh/m²
Travel score
6.3
out of 10

Jeffersontown is human settlement in Jefferson County, Kentucky, United States of America.

Density
1,045/km²
people per km²
Founded
1797

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 71°F in the first days to 79°F by the end.

A typical May day in Jeffersontown reaches about 75°F in the afternoon and slips back to 57°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 85°F. Set against its neighbours, May runs about 8°F warmer than April and about 8°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17152
27153
37153
47254
57254
67254
77355
87355
97355
107356
117456
127456
137456
147457
157457
167557
177558
187558
197658
207659
217659
227659
237760
247760
257860
267861
277861
287861
297962
307962
317962

How May really feels in Jeffersontown

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.

Jeffersontown weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 27°3.710.239.60.1
Feb46° / 29°3.59.42.710.51.1
Mar55° / 37°4.611.61.411.73.5
Apr66° / 47°5.0120.2135.7
May75° / 57°5.013.20146.3
Jun83° / 66°4.012.1014.65.5
Jul86° / 69°3.911.6014.44.8
Aug85° / 67°2.89.5013.55.3
Sep80° / 60°3.07.6012.37.0
Oct68° / 48°3.48.20116.6
Nov55° / 38°3.69.30.69.93.5
Dec45° / 31°4.210.62.29.41.0

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 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34159
44159
53961
64060
74060
84060
94060
104060
114060
124159
134060
144060
154060
164060
174060
184060
193961
203961
214060
224060
234159
244159
254159
264159
274258
284357
294357
304456
314456

Chance of precipitation in May

Any precipitation

Jeffersontown gets around 5.0 in of rain over 13.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
245
345
444
544
644
743
843
943
1042
1142
1242
1342
1441
1541
1641
1741
1841
1941
2041
2142
2242
2342
2442
2542
2642
2742
2842
2942
3042
3142

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
166181420
265181520
363191620
462191630
559201740
657201850
757201850
854201970
953201980
1052201990
11502020100
12491920120
13481920130
14481820150
15471720160
16461720170
17461619190
18451619200
19441619211
20421519221
21411519231
22401619241
23391619251
24371619262
25361720262
26351720262
27331820263
28321820263
29311921273
30291921273
31282021274

Wind in May

Winds average 6 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
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
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 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:52 AM to 5:27 AM, and sunset from 7:26 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:527:26
213.65:517:27
313.65:507:28
413.75:497:29
513.75:487:30
613.75:477:31
713.85:467:32
813.85:447:33
913.85:437:34
1013.95:427:35
1113.95:417:36
1213.95:407:37
1314.05:397:38
1414.05:387:39
1514.05:387:39
1614.15:377:40
1714.15:367:41
1814.15:357:42
1914.15:347:43
2014.25:337:44
2114.25:337:45
2214.25:327:46
2314.35:317:46
2414.35:317:47
2514.35:307:48
2614.35:297:49
2714.35:297:50
2814.45:287:50
2914.45:287:51
3014.45:277:52
3114.45:277:53

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 1.78 kWh/m² to a high of 6.2 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
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Is May a good time to visit Jeffersontown?

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

6.3
Sightseeing
3rd-best month of the year
5.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Jeffersontown for sightseeing.

What to pack for Jeffersontown in May

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

In May, Jeffersontown sees daytime highs around 75°F and nights near 57°F. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Jeffersontown 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 Jeffersontown peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highHighModerateJun 22UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Jeffersontown 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 Jeffersontown 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 Jeffersontown?

Jeffersontown sits at 38.2°N, 85.6°W, 702 ft above sea level, in United States. The nearest listed city is Fern Creek, 2.5 mi away.

Topography around Jeffersontown

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

Within 2 miles, the terrain around Jeffersontown has only modest variations in elevation — a maximum elevation change of 207 ft around an average of 682 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 482 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 906 ft.

The land around Jeffersontown is covered by trees (44%), artificial surfaces (33%) and grassland (22%) within 2 miles, trees (51%) and grassland (27%) within 10 miles, and trees (54%) and grassland (27%) within 50 miles.

2 miles
207 ft
10 miles
482 ft
50 miles
906 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Fern Creek 2.5 mi · Highview 5.0 mi · Newburg 5.6 mi · Saint Matthews 6.2 mi · Okolona 7.5 mi · Jeffersonville 11 mi · Louisville 11 mi · Clarksville 13 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 Jeffersontown (38.1942°, -85.5644°, elevation 702 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).