Lima weather in May

In May, Lima sees average daytime highs of 71°F and overnight lows near 52°F, with 4.2 in of rain across 13.3 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 75°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 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Lima's 6th-clearest and 8th-windiest month. For the whole year in context, see Lima's year-round climate.

Daytime high
71°
5th warmest
Overnight low
52°
8th coldest
Rainfall
4.2 in
13.3 wet days
Daylight
14 h 18 min
5:25 AM – 7:41 PM
Cloud cover
65%
6th clearest
Wind
9 mph
8th windiest
Solar energy
5.77 kWh/m²
Travel score
6.0
out of 10

Lima is city in and county seat of Allen County, Ohio, United States.

Density
1,060/km²
people per km²
Founded
1831

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 67°F in the first days to 75°F by the end.

A typical May day in Lima reaches about 71°F in the afternoon and slips back to 52°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 58°F and 83°F. Set against its neighbours, May runs about 10°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16647
26647
36748
46748
56749
66849
76849
86850
96950
106950
116951
127051
137051
147051
157052
167152
177152
187153
197253
207253
217254
227354
237355
247355
257455
267456
277456
287456
297557
307557
317557

How May really feels in Lima

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.

Lima 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
Jan34° / 21°2.910.45.99.40.0
Feb38° / 23°2.494.910.40.0
Mar48° / 31°3.411.13.411.71.7
Apr61° / 42°4.312.70.813.14.6
May71° / 52°4.213.3014.26.0
Jun79° / 62°4.011.8014.96.3
Jul82° / 65°3.411.1014.66.0
Aug81° / 63°3.39.9013.66.6
Sep75° / 56°2.68012.37.2
Oct63° / 45°2.89.10.210.95.6
Nov50° / 35°3.19.21.49.72.3
Dec39° / 26°2.9104.29.10.1

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 15% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33763
43763
53763
63763
73763
83763
93862
103862
113862
123862
133961
143961
153961
163862
173862
183862
193862
203862
213763
223961
233961
243961
253961
263961
273961
284060
294060
304060
314060

Chance of precipitation in May

Any precipitation

Lima gets around 4.2 in of rain over 13.3 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 43% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
244
344
444
544
644
744
844
944
1044
1144
1244
1344
1444
1544
1644
1744
1844
1944
2043
2143
2243
2342
2442
2542
2641
2741
2841
2941
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 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1889300
28610400
38511400
48411500
58212600
68212600
77913710
87813810
97813810
107614910
1174141020
1273151020
1372151120
1470161130
1569161230
1669161230
1766171340
1866171340
1964171450
2062181460
2161181560
2260181570
2357191680
2457191680
2555191790
2655191790
2754191890
28531918100
29521919100
30511919110
31501920111

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:42 AM to 5:14 AM, and sunset from 7:25 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:427:25
213.85:417:26
313.85:407:27
413.85:387:28
513.95:377:29
613.95:367:30
713.95:357:31
814.05:337:32
914.05:327:33
1014.15:317:35
1114.15:307:36
1214.15:297:37
1314.25:287:38
1414.25:277:39
1514.25:267:40
1614.35:257:41
1714.35:247:42
1814.35:237:43
1914.45:227:43
2014.45:217:44
2114.45:207:45
2214.45:197:46
2314.55:197:47
2414.55:187:48
2514.55:177:49
2614.65:177:50
2714.65:167:51
2814.65:157:52
2914.65:157:52
3014.75:147:53
3114.75:147:54

Solar energy in May

Daily solar energy (kWh/m²)

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

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 6.28 kWh/m² in June across the year — May's 5.77 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.7Bright
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
276.0Bright
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Is May a good time to visit Lima?

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

6.0
Sightseeing
4th-best month of the year
3.9
Beach & pool
5th-best month of the year

May is a reasonable time to visit Lima for sightseeing.

What to pack for Lima in May

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

In May, Lima sees daytime highs around 71°F and nights near 52°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Lima 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 Lima peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec1Low

Air quality in Lima 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 Lima is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1217 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Lima?

Lima sits at 40.7°N, 84.1°W, 879 ft above sea level, in United States. The nearest listed city is Findlay, 32 mi away.

Topography around Lima

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

Within 2 miles, the terrain around Lima has only modest variations in elevation — a maximum elevation change of 295 ft around an average of 873 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 466 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 988 ft.

The land around Lima is covered by artificial surfaces (37%), trees (35%) and grassland (23%) within 2 miles, cropland (61%) within 10 miles, and cropland (81%) within 50 miles.

2 miles
295 ft
10 miles
466 ft
50 miles
988 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Findlay 32 mi · Sidney 32 mi · Defiance 40 mi · Piqua 42 mi · Troy 49 mi · Bowling Green 50 mi · Marysville 52 mi · Marion 52 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 Lima (40.7426°, -84.1052°, elevation 879 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).