Mentor climate — normals and trends
Mentor (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.9 °C and it receives 1,242 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (23.0 °C on average) and the coldest is February (-3.1 °C). Rainfall peaks in November.
Mentor averages 96 frost days, 3 hot days (≥ 30 °C) and 162 rainy days per year.
Mentor has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 110 to 82 per year over the period.
The hottest day of the period reached 34.9 °C (on 16 July 1988) and the coldest -27.3 °C (on 19 January 1994).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MentorOhio
- coords
- 41.67°, -81.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.9°C
Average daily high
12.5°C
Average daily low
7.6°C
Annual rainfall
1,242mm
Sunshine / day
8.6h
Mean relative humidity
76%
Average peak wind
25.8km/h
Seasonal range
26.1°C
Frost days (< 0 °C)
96 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
162 d/yr
Annual snowfall
121.1 cm
Average feels-like high
10.2 °C
Average feels-like low
3.9 °C
Average peak gust
40.2 km/h
Tropical nights (≥ 20 °C)
50 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.22 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
34.9 °C
16 July 1988
Coldest day
-27.3 °C
19 January 1994
Wettest day
77 mm
19 June 2014
Windiest day
70.3 km/h
12 February 2009
Strongest gust
115.9 km/h
26 January 1978
Hottest feels-like
39.5 °C
16 July 1988
Coldest feels-like
-35.7 °C
20 January 1985
Snowiest day
28.1 cm
25 November 1950
Sunniest day
15.0 h
27 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.3 °C | -1.0 °C | 75 mm | -20 mm |
| Feb | 0.6 °C | +0.7 °C | 103 mm | +24 mm |
| Mar | 8.0 °C | +4.5 °C | 70 mm | -27 mm |
| Apr | 10.6 °C | +1.2 °C | 129 mm | +24 mm |
| May | 15.3 °C | -1.6 °C | 151 mm | +47 mm |
| Jun | 22.6 °C | -0.5 °C | 103 mm | -15 mm |
| Jul | 26.3 °C | +1.0 °C | 76 mm | -34 mm |
| Aug | 23.7 °C | -0.8 °C | 91 mm | -14 mm |
| Sep | 21.8 °C | +0.7 °C | 45 mm | -52 mm |
| Oct | 16.1 °C | +1.2 °C | 148 mm | +47 mm |
| Nov | 8.2 °C | -0.2 °C | 109 mm | -10 mm |
| Dec | 2.5 °C | -0.3 °C | 117 mm | +5 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Mentor?
Mentor has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.9 °C and it receives 1,242 mm of precipitation per year.
What is the hottest day ever recorded in Mentor?
The hottest day measured in Mentor between 1940 and 2025 was 16 July 1988, reaching 34.9 °C.
What is the coldest day in Mentor?
The coldest day measured in Mentor between 1940 and 2025 was 19 January 1994, at -27.3 °C.
Does it snow in Mentor?
Yes. Mentor gets on average 121.1 cm of snow per year and has around 96 frost days.
Has the climate of Mentor warmed?
Yes: Mentor warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mentor?
The wettest day measured in Mentor between 1940 and 2025 was 19 June 2014, with 77 mm of rain in 24 hours.
What was the windiest day in Mentor?
The windiest day measured in Mentor between 1940 and 2025 was 12 February 2009, with winds reaching 70.3 km/h.
What is the warmest month in Mentor?
The warmest month in Mentor is July (23.0 °C on average); the coldest is February (-3.1 °C).
How much does it rain in Mentor?
Mentor receives on average 1,242 mm of precipitation per year, spread over about 162 rainy days.
Is it sunny in Mentor?
Mentor gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mentor?
The heaviest 24-hour snowfall measured in Mentor between 1940 and 2025 was 25 November 1950, with 28.1 cm.
Are there tropical nights in Mentor?
Yes: Mentor has on average 50 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mentor?
In Mentor, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 16 July 1988, and the lowest was -35.7 °C on 20 January 1985.
Compare Mentor with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mentor