Chenggu climate — normals and trends
Chenggu (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.5 °C and it receives 1,465 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 (24.3 °C on average) and the coldest is January (1.8 °C). Rainfall peaks in July.
Chenggu averages 54 frost days, 22 hot days (≥ 30 °C) and 157 rainy days per year.
Chenggu 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 71 to 37 per year over the period.
The hottest day of the period reached 37.5 °C (on 16 July 2025) and the coldest -19.3 °C (on 9 February 1945).
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
ChengguShaanxi
- coords
- 33.15°, 107.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.5°C
Average daily high
17.5°C
Average daily low
9.9°C
Annual rainfall
1,465mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
6.5km/h
Seasonal range
22.5°C
Frost days (< 0 °C)
54 d/yr
Hot days (≥ 30 °C)
22 d/yr
Rainy days (≥ 1 mm)
157 d/yr
Annual snowfall
28.5 cm
Average feels-like high
18.0 °C
Average feels-like low
9.5 °C
Average peak gust
22.8 km/h
Tropical nights (≥ 20 °C)
50 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.55 · 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
37.5 °C
16 July 2025
Coldest day
-19.3 °C
9 February 1945
Wettest day
135 mm
11 July 1952
Windiest day
28.1 km/h
24 May 1946
Strongest gust
67.3 km/h
23 June 1946
Hottest feels-like
43.1 °C
16 July 2025
Coldest feels-like
-23.9 °C
9 February 1945
Snowiest day
15.2 cm
18 November 1993
Sunniest day
14.0 h
18 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 | 8.4 °C | +2.5 °C | 45 mm | +17 mm |
| Feb | 8.8 °C | +0.7 °C | 23 mm | -13 mm |
| Mar | 14.5 °C | +1.2 °C | 39 mm | -28 mm |
| Apr | 24.2 °C | +5.3 °C | 14 mm | -76 mm |
| May | 27.7 °C | +4.8 °C | 52 mm | -73 mm |
| Jun | 29.0 °C | +2.7 °C | 81 mm | -70 mm |
| Jul | 31.5 °C | +3.3 °C | 124 mm | -138 mm |
| Aug | 29.8 °C | +2.2 °C | 200 mm | -26 mm |
| Sep | 22.6 °C | +0.1 °C | 465 mm | +233 mm |
| Oct | 16.7 °C | -0.8 °C | 341 mm | +202 mm |
| Nov | 13.9 °C | +1.7 °C | 49 mm | -27 mm |
| Dec | 9.8 °C | +2.6 °C | 28 mm | -3 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 Chenggu?
Chenggu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.5 °C and it receives 1,465 mm of precipitation per year.
What is the hottest day ever recorded in Chenggu?
The hottest day measured in Chenggu between 1940 and 2025 was 16 July 2025, reaching 37.5 °C.
What is the coldest day in Chenggu?
The coldest day measured in Chenggu between 1940 and 2025 was 9 February 1945, at -19.3 °C.
Does it snow in Chenggu?
Yes. Chenggu gets on average 28.5 cm of snow per year and has around 54 frost days.
Has the climate of Chenggu warmed?
Yes: Chenggu warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chenggu?
The wettest day measured in Chenggu between 1940 and 2025 was 11 July 1952, with 135 mm of rain in 24 hours.
What was the windiest day in Chenggu?
The windiest day measured in Chenggu between 1940 and 2025 was 24 May 1946, with winds reaching 28.1 km/h.
What is the warmest month in Chenggu?
The warmest month in Chenggu is July (24.3 °C on average); the coldest is January (1.8 °C).
How much does it rain in Chenggu?
Chenggu receives on average 1,465 mm of precipitation per year, spread over about 157 rainy days.
Is it sunny in Chenggu?
Chenggu gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chenggu?
The heaviest 24-hour snowfall measured in Chenggu between 1940 and 2025 was 18 November 1993, with 15.2 cm.
Are there tropical nights in Chenggu?
Yes: Chenggu has on average 50 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chenggu?
In Chenggu, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 16 July 2025, and the lowest was -23.9 °C on 9 February 1945.
Compare Chenggu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chenggu