Baiyin climate — normals and trends
Baiyin (China) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 8.5 °C and it receives 361 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 (21.5 °C on average) and the coldest is January (-6.5 °C). Rainfall peaks in August.
Baiyin averages 142 frost days, 19 hot days (≥ 30 °C) and 65 rainy days per year.
Baiyin has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 149 to 135 per year over the period.
The hottest day of the period reached 38.5 °C (on 30 July 2010) and the coldest -26.5 °C (on 28 January 2008).
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
BaiyinGansu
- coords
- 36.55°, 104.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
14.3°C
Average daily low
3.1°C
Annual rainfall
361mm
Sunshine / day
9.8h
Mean relative humidity
54%
Average peak wind
15.8km/h
Seasonal range
28.0°C
Frost days (< 0 °C)
142 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
65 d/yr
Annual snowfall
23.5 cm
Average feels-like high
11.3 °C
Average feels-like low
0.3 °C
Average peak gust
32.6 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
38.5 °C
30 July 2010
Coldest day
-26.5 °C
28 January 2008
Wettest day
109 mm
12 July 1946
Windiest day
45.1 km/h
8 April 2001
Strongest gust
95.4 km/h
2 November 2012
Hottest feels-like
38.4 °C
28 July 2010
Coldest feels-like
-31.6 °C
28 January 2008
Snowiest day
10.8 cm
15 October 1994
Sunniest day
14.0 h
31 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 | 1.8 °C | +2.2 °C | 8 mm | +5 mm |
| Feb | 3.1 °C | -0.3 °C | 7 mm | +1 mm |
| Mar | 9.8 °C | -0.5 °C | 7 mm | -5 mm |
| Apr | 19.0 °C | +2.2 °C | 5 mm | -16 mm |
| May | 23.8 °C | +2.1 °C | 21 mm | -9 mm |
| Jun | 26.1 °C | +0.6 °C | 40 mm | -2 mm |
| Jul | 29.4 °C | +2.3 °C | 51 mm | -22 mm |
| Aug | 25.4 °C | +0.1 °C | 101 mm | +22 mm |
| Sep | 22.5 °C | +2.5 °C | 47 mm | -10 mm |
| Oct | 12.8 °C | -1.4 °C | 63 mm | +34 mm |
| Nov | 7.5 °C | +0.5 °C | 12 mm | +4 mm |
| Dec | 4.0 °C | +3.2 °C | 4 mm | +1 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 Baiyin?
Baiyin has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 361 mm of precipitation per year.
What is the hottest day ever recorded in Baiyin?
The hottest day measured in Baiyin between 1940 and 2025 was 30 July 2010, reaching 38.5 °C.
What is the coldest day in Baiyin?
The coldest day measured in Baiyin between 1940 and 2025 was 28 January 2008, at -26.5 °C.
Does it snow in Baiyin?
Yes. Baiyin gets on average 23.5 cm of snow per year and has around 142 frost days.
Has the climate of Baiyin warmed?
Yes: Baiyin warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Baiyin?
The wettest day measured in Baiyin between 1940 and 2025 was 12 July 1946, with 109 mm of rain in 24 hours.
What was the windiest day in Baiyin?
The windiest day measured in Baiyin between 1940 and 2025 was 8 April 2001, with winds reaching 45.1 km/h.
What is the warmest month in Baiyin?
The warmest month in Baiyin is July (21.5 °C on average); the coldest is January (-6.5 °C).
How much does it rain in Baiyin?
Baiyin receives on average 361 mm of precipitation per year, spread over about 65 rainy days.
Is it sunny in Baiyin?
Baiyin gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Baiyin?
The heaviest 24-hour snowfall measured in Baiyin between 1940 and 2025 was 15 October 1994, with 10.8 cm.
Are there tropical nights in Baiyin?
Yes: Baiyin has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Baiyin?
In Baiyin, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 28 July 2010, and the lowest was -31.6 °C on 28 January 2008.
Compare Baiyin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Baiyin