Willoughby weather in May

In May, Willoughby sees average daytime highs of 62°F and overnight lows near 54°F, with 3.8 in of rain across 12.8 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 56°F in the first days to 67°F by the end. The sky is clear or mostly clear about 31% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 48 min by month's end. Set against the rest of the year, May is Willoughby's 5th-clearest and 8th-windiest month. For the whole year in context, see Willoughby's year-round climate.

Daytime high
62°
5th warmest
Overnight low
54°
8th coldest
Rainfall
3.8 in
12.8 wet days
Daylight
14 h 18 min
5:12 AM – 7:32 PM
Cloud cover
58%
5th clearest
Wind
12 mph
8th windiest
Solar energy
6.03 kWh/m²
Travel score
4.9
out of 10

Willoughby is city in Lake County, Ohio, United States.

Density
845/km²
people per km²
Founded
1798

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 56°F in the first days to 67°F by the end.

A typical May day in Willoughby reaches about 62°F in the afternoon and slips back to 54°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 72°F. Set against its neighbours, May runs about 14°F warmer than April and about 12°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
15547
25548
35648
45649
55749
65750
75850
85851
95951
105952
116052
126053
136053
146153
156154
166254
176255
186355
196355
206456
216456
226557
236557
246558
256658
266659
276759
286760
296760
306860
316861

How May really feels in Willoughby

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.

Willoughby weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 24°3.91511.79.30.0
Feb32° / 23°2.9117.510.30.0
Mar37° / 29°3.5125.211.70.0
Apr48° / 40°4.2131.313.11.6
May62° / 54°3.812.8014.34.9
Jun73° / 66°4.712.90156.4
Jul78° / 71°4.312.3014.76.6
Aug76° / 70°4.012.3013.76.8
Sep70° / 63°4.010.4012.36.6
Oct59° / 52°4.313010.94.3
Nov47° / 41°4.514.43.49.71.4
Dec38° / 32°4.415.89.290.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24654
34654
44753
54654
64654
74654
84654
94654
104753
114753
124753
134753
144654
154654
164654
174555
184654
194654
204555
214654
224753
234753
244753
254852
264852
274852
284951
294951
305050
315050

Chance of precipitation in May

Any precipitation

Willoughby gets around 3.8 in of rain over 12.8 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 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
341
441
541
641
741
842
942
1042
1142
1242
1342
1442
1542
1642
1742
1842
1942
2042
2141
2241
2341
2441
2541
2641
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 71% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1926200
2917200
3908200
4899200
58710300
68610310
78511310
88312410
98312410
108113510
118013520
127814620
137814620
147615720
157415830
167316830
177216930
1869171040
1967171141
2065181241
2163181351
2260191452
2359191462
2457201562
2555201672
2653211772
2751211783
2850211883
2948221893
3047221993
31452219103

Wind in May

Winds average 12 mph in May.

Across May, daily wind ranges from about 11 mph on the calmest days to 12 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2811light breeze
2911light breeze
3011light breeze
3111light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 48 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 5:30 AM to 5:00 AM, and sunset from 7:16 PM to 7:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:307:16
213.85:287:17
313.95:277:18
413.95:267:19
513.95:247:20
614.05:237:21
714.05:227:23
814.15:217:24
914.15:197:25
1014.15:187:26
1114.25:177:27
1214.25:167:28
1314.25:157:29
1414.35:147:30
1514.35:137:31
1614.35:127:32
1714.45:117:33
1814.45:107:34
1914.45:097:35
2014.55:087:36
2114.55:077:37
2214.55:067:38
2314.65:057:39
2414.65:057:40
2514.65:047:41
2614.65:037:42
2714.75:037:43
2814.75:027:43
2914.75:017:44
3014.75:017:45
3114.85:007:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.03 kWh/m².

For context, solar energy here swings from a low near 1.31 kWh/m² to a high of 6.54 kWh/m² in June across the year — May's 6.03 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in May

Is May a good time to visit Willoughby?

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

4.9
Sightseeing
5th-best month of the year
1.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Willoughby for sightseeing.

What to pack for Willoughby in May

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

In May, Willoughby sees daytime highs around 62°F and nights near 54°F. Pack sun protection. Worth having: a warm layer and rain gear. About 13 days see rain.

sun protectiona warm layerrain gear

Sea temperature near Willoughby in May

The nearest coast averages about 51°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 11 mi away) is warmest in August at about 75°F and coldest in February near 33°F.

It's comfortable for a long swim from Jun 28 to Sep 24 — about 2.9 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan36Bracing
Feb33Bracing
Mar35Bracing
Apr40Bracing
May51Bracing
Jun65Cool
Jul73Refreshing
Aug75Refreshing
Sep71Refreshing
Oct62Cool
Nov51Bracing
Dec42Bracing

UV index in Willoughby in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Willoughby peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 22UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Willoughby 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 Willoughby is worst in June — around 16 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1716 µg/m³Nov 156 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Good
Apr13Moderate
May15Moderate
Jun16Moderate
Jul15Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov6Good
Dec7Good
Location & terrain

Where is Willoughby?

Willoughby sits at 41.6°N, 81.4°W, 659 ft above sea level, in United States. The nearest listed city is Eastlake, 2.5 mi away.

Topography around Willoughby

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

Within 2 miles, the terrain around Willoughby has only modest variations in elevation — a maximum elevation change of 305 ft around an average of 673 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 853 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 879 ft.

The land around Willoughby is covered by trees (50%), artificial surfaces (25%) and grassland (23%) within 2 miles, trees (43%) and water (34%) within 10 miles, and water (47%) and trees (34%) within 50 miles.

2 miles
305 ft
10 miles
853 ft
50 miles
879 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Eastlake 2.5 mi · Mentor 3.7 mi · Euclid 6.8 mi · Mayfield Heights 8.7 mi · South Euclid 9.9 mi · Collinwood 9.9 mi · Painesville 9.9 mi · Cleveland Heights 11 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 Willoughby (41.6398°, -81.4065°, elevation 659 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).