Jiayuguan climate — normals and trends
Jiayuguan (China) has a cold desert climate (BWk) under the Köppen-Geiger classification. Its mean annual temperature is 7.0 °C and it receives 150 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 (21.3 °C on average) and the coldest is January (-8.8 °C). Rainfall peaks in August.
Jiayuguan averages 161 frost days, 12 hot days (≥ 30 °C) and 36 rainy days per year.
No statistically significant temperature trend emerges for Jiayuguan between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 37.1 °C (on 11 July 1942) and the coldest -26.7 °C (on 14 December 1975).
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
JiayuguanGansu
- coords
- 39.81°, 98.29°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.0°C
Average daily high
12.7°C
Average daily low
1.8°C
Annual rainfall
150mm
Sunshine / day
10.5h
Mean relative humidity
43%
Average peak wind
13.8km/h
Seasonal range
30.1°C
Frost days (< 0 °C)
161 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
36 d/yr
Annual snowfall
25.7 cm
Average feels-like high
9.3 °C
Average feels-like low
-2.1 °C
Average peak gust
28.6 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
No clear trend over this period
Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.
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
37.1 °C
11 July 1942
Coldest day
-26.7 °C
14 December 1975
Wettest day
53 mm
24 August 1955
Windiest day
47.5 km/h
5 May 1966
Strongest gust
97.2 km/h
24 April 2010
Hottest feels-like
36.4 °C
27 July 2010
Coldest feels-like
-32.6 °C
14 December 1975
Snowiest day
10.9 cm
24 October 2010
Sunniest day
14.8 h
24 June 1963
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 | -0.5 °C | +3.2 °C | 2 mm | -2 mm |
| Feb | 1.0 °C | +1.1 °C | 2 mm | -3 mm |
| Mar | 7.1 °C | -0.2 °C | 7 mm | -3 mm |
| Apr | 17.2 °C | +2.1 °C | 8 mm | -2 mm |
| May | 22.8 °C | +2.0 °C | 16 mm | +2 mm |
| Jun | 26.3 °C | +1.4 °C | 12 mm | -6 mm |
| Jul | 27.7 °C | +1.1 °C | 31 mm | +5 mm |
| Aug | 25.7 °C | +0.4 °C | 49 mm | +19 mm |
| Sep | 21.6 °C | +1.3 °C | 5 mm | -10 mm |
| Oct | 12.5 °C | -0.8 °C | 8 mm | +1 mm |
| Nov | 6.4 °C | +1.9 °C | 3 mm | -3 mm |
| Dec | 0.5 °C | +2.7 °C | 9 mm | +5 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 Jiayuguan?
Jiayuguan has a cold desert climate (Köppen BWk). Over 1940-2025, the average annual temperature is 7.0 °C and it receives 150 mm of precipitation per year.
What is the hottest day ever recorded in Jiayuguan?
The hottest day measured in Jiayuguan between 1940 and 2025 was 11 July 1942, reaching 37.1 °C.
What is the coldest day in Jiayuguan?
The coldest day measured in Jiayuguan between 1940 and 2025 was 14 December 1975, at -26.7 °C.
Does it snow in Jiayuguan?
Yes. Jiayuguan gets on average 25.7 cm of snow per year and has around 161 frost days.
Has the climate of Jiayuguan warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Jiayuguan.
What is the wettest day in Jiayuguan?
The wettest day measured in Jiayuguan between 1940 and 2025 was 24 August 1955, with 53 mm of rain in 24 hours.
What was the windiest day in Jiayuguan?
The windiest day measured in Jiayuguan between 1940 and 2025 was 5 May 1966, with winds reaching 47.5 km/h.
What is the warmest month in Jiayuguan?
The warmest month in Jiayuguan is July (21.3 °C on average); the coldest is January (-8.8 °C).
How much does it rain in Jiayuguan?
Jiayuguan receives on average 150 mm of precipitation per year, spread over about 36 rainy days.
Is it sunny in Jiayuguan?
Jiayuguan gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jiayuguan?
The heaviest 24-hour snowfall measured in Jiayuguan between 1940 and 2025 was 24 October 2010, with 10.9 cm.
Are there tropical nights in Jiayuguan?
Yes: Jiayuguan has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jiayuguan?
In Jiayuguan, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 27 July 2010, and the lowest was -32.6 °C on 14 December 1975.
Compare Jiayuguan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jiayuguan