Parma climate — normals and trends
Parma (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 1,075 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 January (-3.0 °C). Rainfall peaks in June.
Parma averages 99 frost days, 13 hot days (≥ 30 °C) and 151 rainy days per year.
Parma has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 85 per year over the period.
The hottest day of the period reached 37.7 °C (on 25 June 1988) and the coldest -28.3 °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
ParmaOhio
- coords
- 41.40°, -81.72°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
13.9°C
Average daily low
6.8°C
Annual rainfall
1,075mm
Sunshine / day
8.8h
Mean relative humidity
74%
Average peak wind
21.6km/h
Seasonal range
26.0°C
Frost days (< 0 °C)
99 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
98.6 cm
Average feels-like high
12.0 °C
Average feels-like low
3.7 °C
Average peak gust
38.9 km/h
Tropical nights (≥ 20 °C)
34 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
37.7 °C
25 June 1988
Coldest day
-28.3 °C
19 January 1994
Wettest day
87 mm
27 June 2013
Windiest day
57.4 km/h
12 November 1992
Strongest gust
106.6 km/h
25 March 1947
Hottest feels-like
40.8 °C
14 July 1995
Coldest feels-like
-36.0 °C
21 January 1985
Snowiest day
24.0 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 | -1.6 °C | -1.8 °C | 53 mm | -25 mm |
| Feb | 1.1 °C | -0.1 °C | 81 mm | +12 mm |
| Mar | 11.3 °C | +5.2 °C | 70 mm | -20 mm |
| Apr | 14.3 °C | +1.6 °C | 130 mm | +28 mm |
| May | 17.7 °C | -1.5 °C | 141 mm | +42 mm |
| Jun | 25.4 °C | +0.8 °C | 126 mm | +19 mm |
| Jul | 27.8 °C | +1.1 °C | 95 mm | -5 mm |
| Aug | 25.0 °C | -0.8 °C | 61 mm | -27 mm |
| Sep | 23.6 °C | +1.3 °C | 57 mm | -26 mm |
| Oct | 17.3 °C | +1.2 °C | 121 mm | +41 mm |
| Nov | 8.8 °C | -0.4 °C | 69 mm | -23 mm |
| Dec | 2.6 °C | -0.5 °C | 84 mm | -2 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 Parma?
Parma has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 1,075 mm of precipitation per year.
What is the hottest day ever recorded in Parma?
The hottest day measured in Parma between 1940 and 2025 was 25 June 1988, reaching 37.7 °C.
What is the coldest day in Parma?
The coldest day measured in Parma between 1940 and 2025 was 19 January 1994, at -28.3 °C.
Does it snow in Parma?
Yes. Parma gets on average 98.6 cm of snow per year and has around 99 frost days.
Has the climate of Parma warmed?
Yes: Parma warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Parma?
The wettest day measured in Parma between 1940 and 2025 was 27 June 2013, with 87 mm of rain in 24 hours.
What was the windiest day in Parma?
The windiest day measured in Parma between 1940 and 2025 was 12 November 1992, with winds reaching 57.4 km/h.
What is the warmest month in Parma?
The warmest month in Parma is July (23.0 °C on average); the coldest is January (-3.0 °C).
How much does it rain in Parma?
Parma receives on average 1,075 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Parma?
Parma gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Parma?
The heaviest 24-hour snowfall measured in Parma between 1940 and 2025 was 25 November 1950, with 24.0 cm.
Are there tropical nights in Parma?
Yes: Parma has on average 34 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Parma?
In Parma, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 14 July 1995, and the lowest was -36.0 °C on 21 January 1985.
Compare Parma with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Parma