Longcheng climate — normals and trends
Longcheng (China) has a warm-summer humid continental, dry winter climate (Dwb) under the Köppen-Geiger classification. Its mean annual temperature is 8.4 °C and it receives 760 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 (20.4 °C on average) and the coldest is January (-5.1 °C). Rainfall peaks in July.
Longcheng averages 131 frost days, 3 hot days (≥ 30 °C) and 109 rainy days per year.
Longcheng has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 140 to 122 per year over the period.
The hottest day of the period reached 33.8 °C (on 1 August 2021) and the coldest -27.8 °C (on 9 January 1955).
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
LongchengGansu
- coords
- 35.00°, 105.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.4°C
Average daily high
13.5°C
Average daily low
3.9°C
Annual rainfall
760mm
Sunshine / day
8.3h
Mean relative humidity
69%
Average peak wind
14.2km/h
Seasonal range
25.5°C
Frost days (< 0 °C)
131 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
39.8 cm
Average feels-like high
11.3 °C
Average feels-like low
1.3 °C
Average peak gust
31.0 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
33.8 °C
1 August 2021
Coldest day
-27.8 °C
9 January 1955
Wettest day
137 mm
22 July 1946
Windiest day
47.2 km/h
1 June 1946
Strongest gust
92.5 km/h
31 May 1946
Hottest feels-like
36.4 °C
4 August 2002
Coldest feels-like
-32.9 °C
9 January 1955
Snowiest day
11.8 cm
18 November 1961
Sunniest day
14.0 h
28 May 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 | 2.9 °C | +2.7 °C | 16 mm | +7 mm |
| Feb | 3.3 °C | +0.2 °C | 15 mm | +2 mm |
| Mar | 9.7 °C | +0.4 °C | 12 mm | -16 mm |
| Apr | 18.7 °C | +3.5 °C | 12 mm | -35 mm |
| May | 23.3 °C | +3.7 °C | 36 mm | -36 mm |
| Jun | 25.2 °C | +1.8 °C | 75 mm | -15 mm |
| Jul | 26.6 °C | +1.3 °C | 110 mm | -30 mm |
| Aug | 25.9 °C | +1.8 °C | 125 mm | -12 mm |
| Sep | 20.4 °C | +1.3 °C | 188 mm | +66 mm |
| Oct | 13.0 °C | -0.6 °C | 220 mm | +151 mm |
| Nov | 8.5 °C | +1.2 °C | 14 mm | -12 mm |
| Dec | 4.5 °C | +2.9 °C | 14 mm | +6 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 Longcheng?
Longcheng has a warm-summer humid continental, dry winter climate (Köppen Dwb). Over 1940-2025, the average annual temperature is 8.4 °C and it receives 760 mm of precipitation per year.
What is the hottest day ever recorded in Longcheng?
The hottest day measured in Longcheng between 1940 and 2025 was 1 August 2021, reaching 33.8 °C.
What is the coldest day in Longcheng?
The coldest day measured in Longcheng between 1940 and 2025 was 9 January 1955, at -27.8 °C.
Does it snow in Longcheng?
Yes. Longcheng gets on average 39.8 cm of snow per year and has around 131 frost days.
Has the climate of Longcheng warmed?
Yes: Longcheng warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longcheng?
The wettest day measured in Longcheng between 1940 and 2025 was 22 July 1946, with 137 mm of rain in 24 hours.
What was the windiest day in Longcheng?
The windiest day measured in Longcheng between 1940 and 2025 was 1 June 1946, with winds reaching 47.2 km/h.
What is the warmest month in Longcheng?
The warmest month in Longcheng is July (20.4 °C on average); the coldest is January (-5.1 °C).
How much does it rain in Longcheng?
Longcheng receives on average 760 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Longcheng?
Longcheng gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longcheng?
The heaviest 24-hour snowfall measured in Longcheng between 1940 and 2025 was 18 November 1961, with 11.8 cm.
Are there tropical nights in Longcheng?
Yes: Longcheng has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longcheng?
In Longcheng, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 4 August 2002, and the lowest was -32.9 °C on 9 January 1955.
Compare Longcheng with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longcheng