Mentor in Summer

In summer (June, July and August), Mentor sees average daytime highs around 76°F and overnight lows near 67°F, with 13.5 in of rain over about 39 wet days across the season. It is the warmest season of the year and the wettest season of the year.

Over the season highs climb from about 70°F in early June to 75°F by late August. The sky is clear or mostly clear about 43% of the time across summer, and the air most often feels muggy.

Summer is Mentor's best season of the year to visit on our travel score. For the whole year in context, see Mentor's year-round climate.

Avg daytime high: 76°F; warmest season of the year
Avg overnight low: 67°F
Rainfall: 13.5 in; 39 wet days
Avg wind: 9 mph
Travel score: 6.6; best season of the year
Months: Jun · Jul · Aug

← Spring Mentor year-round climate Fall →

Spring Summer Fall Winter

Temperature in Mentor in Summer

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 70°F in early June to 75°F by late August.

A typical summer day in Mentor reaches about 76°F and drops to 67°F overnight. The warmest of the three months is July, the coolest June.

How summer really feels in Mentor

Once humidity and wind are folded in, summer brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Mentor weather by month

How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	33° / 24°	3.9	15.4	12.1	9.3	0.0
Feb	33° / 23°	2.9	11.4	7.9	10.3	0.0
Mar	39° / 29°	3.6	12.3	5.6	11.7	0.1
Apr	50° / 40°	4.3	13.5	1.6	13.1	2.0
May	63° / 54°	4.0	13.1	0	14.3	5.0
Jun	73° / 65°	4.9	13.2	0	15	6.4
Jul	78° / 69°	4.4	12.8	0	14.7	6.6
Aug	76° / 68°	4.1	12.6	0	13.7	6.8
Sep	70° / 61°	4.0	10.4	0	12.3	6.6
Oct	59° / 50°	4.3	13.2	0	10.9	4.2
Nov	47° / 40°	4.5	14.4	3.6	9.7	1.4
Dec	38° / 31°	4.3	16.1	9.9	9	0.0

Cloud cover in Summer

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time across summer.

Chance of precipitation in Summer

Any precipitation

Mentor gets around 13.5 in of rain over 39 wet days across summer. The line is the day-by-day chance of measurable precipitation.

Humidity in Summer

DryComfortableHumidMuggyOppressiveMiserable

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

Wind in Summer

Winds average 9 mph across summer.

Sunrise & sunset in Summer

DaylightNight

Daylight runs from about 14 h 48 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.

Solar energy in Summer

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across summer, about 6.1 kWh/m².

Planning a trip in summer

Is summer a good time to visit Mentor?

Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

6.6

Sightseeing

1st-best month of the year

5.6

Beach & pool

1st-best month of the year

summer is a reasonable time to visit Mentor for sightseeing.

What to pack for Mentor in Summer

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

In summer, Mentor sees daytime highs around 76°F and nights near 67°F. Pack sun protection. Worth having: light clothes and rain gear. About 39 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Mentor in Summer

The nearest coast averages about 70°F across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 mi away) is warmest in August at about 74°F and coldest in February near 33°F.

It's comfortable for a long swim from Jul 2 to Sep 23 — about 2.8 months when the water holds above 68°F.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°F)	36	33	34	40	50	63	73	74	70	61	51	42
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Refreshing	Refreshing	Refreshing	Cool	Bracing	Bracing

	Sea temperature (°F)	Comfort
Jan	36	Bracing
Feb	33	Bracing
Mar	34	Bracing
Apr	40	Bracing
May	50	Bracing
Jun	63	Cool
Jul	73	Refreshing
Aug	74	Refreshing
Sep	70	Refreshing
Oct	61	Cool
Nov	51	Bracing
Dec	42	Bracing

UV index in Mentor in Summer

LowModerateHighVery highExtreme

Clear-sky midday UV across summer averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mentor peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	2	4	6	8	9	9	7	6	3	2	2
Level	Low	Moderate	Moderate	High	Very high	Very high	Very high	High	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	2	Moderate
Mar	4	Moderate
Apr	6	High
May	8	Very high
Jun	9	Very high
Jul	9	Very high
Aug	7	High
Sep	6	High
Oct	3	Moderate
Nov	2	Moderate
Dec	2	Low

Location & terrain

Where is Mentor?

Mentor sits at 41.7°N, 81.3°W, 692 ft above sea level, in United States. The nearest listed city is Willoughby, 3.7 mi away.

Topography around Mentor

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

Within 2 miles, the terrain around Mentor has only modest variations in elevation — a maximum elevation change of 253 ft around an average of 705 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 856 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 879 ft.

The land around Mentor is covered by trees (53%), artificial surfaces (24%) and grassland (22%) within 2 miles, trees (47%) and water (30%) within 10 miles, and water (47%) and trees (34%) within 50 miles.

2 miles

253 ft

trees 53%

10 miles

856 ft

trees 47%

50 miles

879 ft

water 47%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Spring Mentor year-round climate Fall →

Summer weather nearby: Willoughby 3.7 mi · Eastlake 5.6 mi · Painesville 6.2 mi · Euclid 11 mi · Mayfield Heights 12 mi · South Euclid 14 mi · Collinwood 14 mi · Cleveland Heights 15 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

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 Mentor (41.6662°, -81.3396°, elevation 692 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.