Climate - Zhengzhou (China)

The climate of Zhengzhou (formerly Zhengxian) is continental, with cold, dry winters and hot, muggy and rainy summers.
The city is the capital of the Henan province and is located in the east of China, at 34 degrees north latitude, on the south bank of the Yellow River (or Huang He). To the southwest is Mount Song, 1,512 meters (4,961 feet) high, one of the five sacred mountains of China, while to the east is the North China Plain (or Yellow Plain), considered as the cradle of Chinese civilization.
Winter is dry and quite sunny. Sometimes fog can form. Given the low temperatures, precipitation, even though it is not abundant, can occur in the form of snow. Sometimes there can be cold spells, during which the temperature drops to -10 °C (14 °F) or even below. In January 1990, it dropped to -18 °C (-0.5 °F).
Summer is the only season when the rains are quite abundant. Sometimes there can be particularly heavy rains, which can cause flooding, as happened in July 2021.
In periods of good weather, there can be heat waves, during which the temperature can reach or exceed 40 °C (104 °F).

The average temperature of the coldest month (January) is of 0.9 °C (33.6 °F), that of the warmest month (July) is of 27.6 °C (81.6 °F). Here are the average temperatures.
Precipitation amounts to 640 millimeters (25.2 inches) per year: so, it is at an intermediate level. It ranges from 9 mm (0.4 in) in the driest month (December) to 145 mm (5.7 in) in the wettest one (July). Here is the average precipitation.
On average, there are around 2185 sunshine hours per year. Here are the average sunshine hours per day.

Zhengzhou - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

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In January, the coldest month of the year, the average temperature in Zhengzhou is of 0.9 °C (34 °F), with a minimum of -4.2 °C (24.5 °F) and a maximum of 5.9 °C (42.7 °F).
On the coldest nights of the month, the temperature usually drops to around -9 °C (16 °F). However, in January 1993, it dropped to -14.3 °C (6.3 °F).
On the warmest days of the month, the temperature usually reaches around 15 °C (59.5 °F). However, in January 2002, it reached 19.9 °C (67.8 °F).
Precipitation amounts to 10 mm (0.4 in), distributed over 3 days.
On average, there are 145 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 55%.
The average wind speed is 8 kph (5 kph).

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In February, the average temperature in Zhengzhou is of 4.2 °C (40 °F), with a minimum of -1.4 °C (29.5 °F) and a maximum of 9.7 °C (49.5 °F).
On the coldest nights of the month, the temperature usually drops to around -7 °C (19.5 °F). However, in February 1996, it dropped to -10.9 °C (12.4 °F).
On the warmest days of the month, the temperature usually reaches around 19 °C (66 °F). However, in February 1993, it reached 25.2 °C (77.4 °F).
Precipitation amounts to 12 mm (0.5 in), distributed over 4 days.
On average, there are 140 hours of sunshine per month, i.e. 5 hours per day.
The average humidity is 55%.
The average wind speed is 9 kph (6 kph).

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In March, the average temperature in Zhengzhou is of 9.6 °C (49 °F), with a minimum of 3.7 °C (38.7 °F) and a maximum of 15.5 °C (59.9 °F).
On the coldest nights of the month, the temperature usually drops to around -2 °C (28.5 °F). However, in March 1992, it dropped to -7.5 °C (18.5 °F).
On the warmest days of the month, the temperature usually reaches around 26.5 °C (79.5 °F). However, in March 2013, it reached 33 °C (91.4 °F).
Precipitation amounts to 25 mm (1 in), distributed over 6 days.
On average, there are 165 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 53%.
The average wind speed is 10 kph (6 kph).

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In April, the average temperature in Zhengzhou is of 15.9 °C (61 °F), with a minimum of 9.6 °C (49.3 °F) and a maximum of 22.1 °C (71.9 °F).
On the coldest nights of the month, the temperature usually drops to around 2.5 °C (37 °F). However, in April 1995, it dropped to -1.4 °C (29.5 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in April 2006, it reached 38.7 °C (101.7 °F).
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
On average, there are 205 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 56%.
The average wind speed is 10 kph (6 kph).

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In May, the average temperature in Zhengzhou is of 21.5 °C (71 °F), with a minimum of 15.3 °C (59.5 °F) and a maximum of 27.7 °C (81.9 °F).
On the coldest nights of the month, the temperature usually drops to around 9 °C (48 °F). However, in May 1991, it dropped to 5.7 °C (42.3 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (96 °F). However, in May 2020, it reached 40.8 °C (105.4 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 7 days.
On average, there are 235 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 56%.
The average wind speed is 9 kph (6 kph).

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In June, the average temperature in Zhengzhou is of 26.1 °C (79 °F), with a minimum of 20.3 °C (68.6 °F) and a maximum of 31.9 °C (89.4 °F).
On the coldest nights of the month, the temperature usually drops to around 16 °C (60.5 °F). However, in June 2017, it dropped to 14 °C (57.2 °F).
On the warmest days of the month, the temperature usually reaches around 38 °C (101 °F). However, in June 2011, it reached 42.5 °C (108.5 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 8 days.
On average, there are 230 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 59%.
The average wind speed is 8 kph (5 kph).

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In July, the warmest month of the year, the average temperature in Zhengzhou is of 27.6 °C (82 °F), with a minimum of 23 °C (73.4 °F) and a maximum of 32.2 °C (89.9 °F).
On the coldest nights of the month, the temperature usually drops to around 19.5 °C (67 °F). However, in July 1993, it dropped to 17.4 °C (63.3 °F).
On the warmest days of the month, the temperature usually reaches around 37.5 °C (100 °F). However, in July 2002, it reached 41.6 °C (106.9 °F).
Precipitation amounts to 145 mm (5.7 in), distributed over 12 days.
On average, there are 200 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 75%.
The average wind speed is 8 kph (5 kph).

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In August, the average temperature in Zhengzhou is of 26.2 °C (79 °F), with a minimum of 21.8 °C (71.2 °F) and a maximum of 30.6 °C (87.2 °F).
On the coldest nights of the month, the temperature usually drops to around 16.5 °C (61.5 °F). However, in August 2009, it dropped to 12 °C (53.6 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (96.5 °F). However, in August 2013, it reached 39 °C (102.2 °F).
Precipitation amounts to 140 mm (5.5 in), distributed over 10 days.
On average, there are 200 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 77%.
The average wind speed is 7 kph (5 kph).

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In September, the average temperature in Zhengzhou is of 21.6 °C (71 °F), with a minimum of 16.4 °C (61.4 °F) and a maximum of 26.9 °C (80.3 °F).
On the coldest nights of the month, the temperature usually drops to around 10 °C (50 °F). However, in September 1995, it dropped to 6.8 °C (44.2 °F).
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92.5 °F). However, in September 1997, it reached 37.9 °C (100.2 °F).
Precipitation amounts to 75 mm (3 in), distributed over 8 days.
On average, there are 180 hours of sunshine per month, i.e. 6 hours per day.
The average humidity is 71%.
The average wind speed is 7 kph (4 kph).

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In October, the average temperature in Zhengzhou is of 15.8 °C (60 °F), with a minimum of 10 °C (50 °F) and a maximum of 21.7 °C (71 °F).
On the coldest nights of the month, the temperature usually drops to around 2.5 °C (37 °F). However, in October 1991, it dropped to -0.5 °C (31.1 °F).
On the warmest days of the month, the temperature usually reaches around 29 °C (84.5 °F). However, in October 1998, it reached 34 °C (93.2 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 7 days.
On average, there are 180 hours of sunshine per month, i.e. 6 hours per day.
The average humidity is 63%.
The average wind speed is 7 kph (4 kph).

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In November, the average temperature in Zhengzhou is of 8.6 °C (47 °F), with a minimum of 2.9 °C (37.2 °F) and a maximum of 14.2 °C (57.6 °F).
On the coldest nights of the month, the temperature usually drops to around -3.5 °C (26 °F). However, in November 1993, it dropped to -13.1 °C (8.4 °F).
On the warmest days of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, in November 2003, it reached 28.1 °C (82.6 °F).
Precipitation amounts to 25 mm (1 in), distributed over 5 days.
On average, there are 160 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 60%.
The average wind speed is 8 kph (5 kph).

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In December, the average temperature in Zhengzhou is of 2.9 °C (37 °F), with a minimum of -2.3 °C (27.8 °F) and a maximum of 8.1 °C (46.6 °F).
On the coldest nights of the month, the temperature usually drops to around -7 °C (19 °F). However, in December 2008, it dropped to -11 °C (12.2 °F).
On the warmest days of the month, the temperature usually reaches around 16.5 °C (62 °F). However, in December 2010, it reached 21.8 °C (71.2 °F).
Precipitation amounts to only 9 mm (0.4 in), distributed over 4 days.
On average, there are 150 hours of sunshine per month, i.e. 5 hours per day.
The average humidity is 55%.
The average wind speed is 9 kph (5 kph).