Acheng climate — normals and trends
Acheng (China) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 3.7 °C and it receives 754 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 (22.6 °C on average) and the coldest is January (-19.2 °C). Rainfall peaks in July.
Acheng averages 178 frost days, 8 hot days (≥ 30 °C) and 101 rainy days per year.
Acheng has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 183 to 173 per year over the period.
The hottest day of the period reached 37.3 °C (on 26 June 2010) and the coldest -39.7 °C (on 11 January 2001).
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
AchengHeilongjiang
- coords
- 45.55°, 126.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.7°C
Average daily high
8.8°C
Average daily low
-1.5°C
Annual rainfall
754mm
Sunshine / day
9.1h
Mean relative humidity
68%
Average peak wind
16.9km/h
Seasonal range
41.8°C
Frost days (< 0 °C)
178 d/yr
Hot days (≥ 30 °C)
8 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
48.0 cm
Average feels-like high
6.0 °C
Average feels-like low
-4.8 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
37.3 °C
26 June 2010
Coldest day
-39.7 °C
11 January 2001
Wettest day
127 mm
13 July 1994
Windiest day
50.3 km/h
8 April 1992
Strongest gust
104.0 km/h
8 April 2010
Hottest feels-like
39.9 °C
3 August 1982
Coldest feels-like
-45.3 °C
12 January 1951
Snowiest day
21.8 cm
6 November 2023
Sunniest day
15.0 h
1 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 | -10.9 °C | +2.8 °C | 3 mm | -3 mm |
| Feb | -7.9 °C | +0.8 °C | 4 mm | -5 mm |
| Mar | 3.3 °C | +2.5 °C | 15 mm | -5 mm |
| Apr | 14.1 °C | +2.0 °C | 57 mm | +16 mm |
| May | 19.5 °C | +0.1 °C | 70 mm | -4 mm |
| Jun | 25.7 °C | +1.3 °C | 129 mm | +17 mm |
| Jul | 28.9 °C | +2.2 °C | 138 mm | -34 mm |
| Aug | 25.9 °C | +0.6 °C | 183 mm | +25 mm |
| Sep | 23.6 °C | +3.7 °C | 36 mm | -45 mm |
| Oct | 10.4 °C | -0.9 °C | 18 mm | -29 mm |
| Nov | 2.2 °C | +3.1 °C | 15 mm | -7 mm |
| Dec | -8.9 °C | +2.0 °C | 13 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 Acheng?
Acheng has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 3.7 °C and it receives 754 mm of precipitation per year.
What is the hottest day ever recorded in Acheng?
The hottest day measured in Acheng between 1940 and 2025 was 26 June 2010, reaching 37.3 °C.
What is the coldest day in Acheng?
The coldest day measured in Acheng between 1940 and 2025 was 11 January 2001, at -39.7 °C.
Does it snow in Acheng?
Yes. Acheng gets on average 48.0 cm of snow per year and has around 178 frost days.
Has the climate of Acheng warmed?
Yes: Acheng warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Acheng?
The wettest day measured in Acheng between 1940 and 2025 was 13 July 1994, with 127 mm of rain in 24 hours.
What was the windiest day in Acheng?
The windiest day measured in Acheng between 1940 and 2025 was 8 April 1992, with winds reaching 50.3 km/h.
What is the warmest month in Acheng?
The warmest month in Acheng is July (22.6 °C on average); the coldest is January (-19.2 °C).
How much does it rain in Acheng?
Acheng receives on average 754 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Acheng?
Acheng gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Acheng?
The heaviest 24-hour snowfall measured in Acheng between 1940 and 2025 was 6 November 2023, with 21.8 cm.
Are there tropical nights in Acheng?
Yes: Acheng has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Acheng?
In Acheng, between 1940 and 2025, the highest apparent temperature reached 39.9 °C on 3 August 1982, and the lowest was -45.3 °C on 12 January 1951.
Compare Acheng with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Acheng