Zhengzhou climate — normals and trends
Zhengzhou (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °C and it receives 875 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 (27.4 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in July.
Zhengzhou averages 74 frost days, 75 hot days (≥ 30 °C) and 88 rainy days per year.
Zhengzhou has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 88 to 60 per year over the period.
The hottest day of the period reached 42.7 °C (on 5 July 1942) and the coldest -22.6 °C (on 13 January 1951).
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
ZhengzhouHenan
- coords
- 34.76°, 113.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.9°C
Average daily high
19.8°C
Average daily low
10.5°C
Annual rainfall
875mm
Sunshine / day
8.5h
Mean relative humidity
65%
Average peak wind
15.0km/h
Seasonal range
27.1°C
Frost days (< 0 °C)
74 d/yr
Hot days (≥ 30 °C)
75 d/yr
Rainy days (≥ 1 mm)
88 d/yr
Annual snowfall
24.7 cm
Average feels-like high
19.2 °C
Average feels-like low
9.2 °C
Average peak gust
30.9 km/h
Tropical nights (≥ 20 °C)
87 d/yr
Solar radiation
15.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
42.7 °C
5 July 1942
Coldest day
-22.6 °C
13 January 1951
Wettest day
214 mm
22 June 1955
Windiest day
45.3 km/h
2 May 1982
Strongest gust
88.9 km/h
2 May 1982
Hottest feels-like
46.5 °C
22 July 1958
Coldest feels-like
-27.7 °C
16 January 1958
Snowiest day
15.1 cm
19 November 1993
Sunniest day
13.9 h
17 June 1949
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 | 8.3 °C | +3.2 °C | 29 mm | +16 mm |
| Feb | 9.9 °C | +1.7 °C | 3 mm | -16 mm |
| Mar | 17.5 °C | +3.0 °C | 43 mm | +11 mm |
| Apr | 26.8 °C | +5.3 °C | 22 mm | -27 mm |
| May | 30.2 °C | +3.1 °C | 31 mm | -35 mm |
| Jun | 33.2 °C | +1.5 °C | 88 mm | -5 mm |
| Jul | 34.7 °C | +3.2 °C | 112 mm | -112 mm |
| Aug | 32.7 °C | +2.7 °C | 184 mm | +1 mm |
| Sep | 24.7 °C | -1.4 °C | 234 mm | +132 mm |
| Oct | 17.4 °C | -3.6 °C | 161 mm | +110 mm |
| Nov | 17.3 °C | +3.5 °C | 23 mm | -9 mm |
| Dec | 10.4 °C | +3.1 °C | 17 mm | +4 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 Zhengzhou?
Zhengzhou has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 875 mm of precipitation per year.
What is the hottest day ever recorded in Zhengzhou?
The hottest day measured in Zhengzhou between 1940 and 2025 was 5 July 1942, reaching 42.7 °C.
What is the coldest day in Zhengzhou?
The coldest day measured in Zhengzhou between 1940 and 2025 was 13 January 1951, at -22.6 °C.
Does it snow in Zhengzhou?
Yes. Zhengzhou gets on average 24.7 cm of snow per year and has around 74 frost days.
Has the climate of Zhengzhou warmed?
Yes: Zhengzhou warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zhengzhou?
The wettest day measured in Zhengzhou between 1940 and 2025 was 22 June 1955, with 214 mm of rain in 24 hours.
What was the windiest day in Zhengzhou?
The windiest day measured in Zhengzhou between 1940 and 2025 was 2 May 1982, with winds reaching 45.3 km/h.
What is the warmest month in Zhengzhou?
The warmest month in Zhengzhou is July (27.4 °C on average); the coldest is January (0.3 °C).
How much does it rain in Zhengzhou?
Zhengzhou receives on average 875 mm of precipitation per year, spread over about 88 rainy days.
Is it sunny in Zhengzhou?
Zhengzhou gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zhengzhou?
The heaviest 24-hour snowfall measured in Zhengzhou between 1940 and 2025 was 19 November 1993, with 15.1 cm.
Are there tropical nights in Zhengzhou?
Yes: Zhengzhou has on average 87 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zhengzhou?
In Zhengzhou, between 1940 and 2025, the highest apparent temperature reached 46.5 °C on 22 July 1958, and the lowest was -27.7 °C on 16 January 1958.
Compare Zhengzhou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zhengzhou