Willoughby weather in August

In August, Willoughby sees average daytime highs of 76°F and overnight lows near 70°F, with 4.0 in of rain across 12.3 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 76°F through the month. The sky is clear or mostly clear about 47% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Willoughby's 1st-clearest and 12th-windiest month. For the whole year in context, see Willoughby's year-round climate.

Daytime high
76°
2nd warmest
Overnight low
70°
11th coldest
Rainfall
4.0 in
12.3 wet days
Daylight
13 h 42 min
5:39 AM – 7:20 PM
Cloud cover
46%
1st clearest
Wind
10 mph
12th windiest
Solar energy
5.63 kWh/m²
Travel score
6.8
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 August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 76°F through the month.

A typical August day in Willoughby reaches about 76°F in the afternoon and slips back to 70°F overnight — a 7°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 82°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°70°80°151015202531
Avg high (°F)Avg low (°F)
17871
27871
37771
47771
57771
67771
77771
87771
97771
107771
117770
127770
137770
147670
157670
167670
177670
187670
197670
207669
217669
227669
237669
247669
257669
267669
277669
287569
297568
307568
317568

How August really feels in Willoughby

Once humidity and wind are folded in, August 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

August 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 August compares with the rest of the year at a glance. August is the 2nd-warmest and 7th-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56436
66535
76436
86337
96337
106337
116337
126436
136436
146535
156535
166535
176535
186634
196535
206535
216634
226634
236535
246634
256634
266535
276535
286535
296535
306535
316436

Chance of precipitation in August

Any precipitation

Willoughby gets around 4.0 in of rain over 12.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
240
340
440
541
641
741
842
942
1042
1143
1243
1343
1443
1543
1643
1742
1842
1941
2041
2140
2239
2338
2437
2536
2635
2734
2833
2933
3032
3132

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16162931171
26162931161
36162931161
46172931151
56172931151
67172931151
77172931151
87172832141
98172832141
108172832141
118182832131
128182832131
138182832131
148182932121
158182932121
168182932121
178192932121
188192932121
198192832111
208192832111
218192933110
228202832110
238202832110
248202932110
259212831110
269212830110
279212830110
2810222730110
2910222729110
3011222729110
3112222728110

Wind in August

Winds average 10 mph in August, the calmest month.

Across August, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2511light breeze
2611light breeze
2711light breeze
2811light breeze
2911light breeze
3011light breeze
3111light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 5:24 AM to 5:55 AM, and sunset from 7:40 PM to 6:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:247:40
214.25:257:39
314.25:267:38
414.25:277:36
514.15:287:35
614.15:297:34
714.15:307:33
814.05:317:31
914.05:327:30
1013.95:337:29
1113.95:347:27
1213.95:357:26
1313.85:367:25
1413.85:377:23
1513.75:387:22
1613.75:397:20
1713.65:407:19
1813.65:417:17
1913.65:427:16
2013.55:437:14
2113.55:447:13
2213.45:457:11
2313.45:467:10
2413.35:477:08
2513.35:497:06
2613.35:507:05
2713.25:517:03
2813.25:527:02
2913.15:537:00
3013.15:546:58
3113.05:556:56

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.63 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 — August's 5.63 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.0Intense
36.0Intense
46.0Intense
56.0Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.6Bright
195.5Bright
205.5Bright
215.5Bright
225.4Bright
235.4Bright
245.4Bright
255.3Bright
265.3Bright
275.3Bright
285.2Bright
295.2Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Willoughby?

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

6.8
Sightseeing
1st-best month of the year
6.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Willoughby for sightseeing.

What to pack for Willoughby in August

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

In August, Willoughby sees daytime highs around 76°F and nights near 70°F. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Willoughby in August

The nearest coast averages about 75°F in August — 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 August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 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 August

GoodModeratePoorUnhealthyVery unhealthy

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