Choibalsan climate — normals and trends
Choibalsan (Mongolia) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 1.4 °C and it receives 303 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 (20.9 °C on average) and the coldest is January (-20.1 °C). Rainfall peaks in July.
Choibalsan averages 204 frost days, 14 hot days (≥ 30 °C) and 56 rainy days per year.
Choibalsan 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 207 to 201 per year over the period.
The hottest day of the period reached 41.7 °C (on 12 July 1942) and the coldest -42.8 °C (on 1 January 1953).
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
ChoibalsanEast Aimak
- coords
- 48.07°, 114.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
1.4°C
Average daily high
7.3°C
Average daily low
-4.2°C
Annual rainfall
303mm
Sunshine / day
9.8h
Mean relative humidity
58%
Average peak wind
21.1km/h
Seasonal range
41.0°C
Frost days (< 0 °C)
204 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
56 d/yr
Annual snowfall
33.1 cm
Average feels-like high
3.0 °C
Average feels-like low
-8.6 °C
Average peak gust
36.9 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.17 · 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
41.7 °C
12 July 1942
Coldest day
-42.8 °C
1 January 1953
Wettest day
63 mm
2 September 1955
Windiest day
63.1 km/h
19 June 2009
Strongest gust
104.0 km/h
19 June 2009
Hottest feels-like
40.1 °C
12 July 1942
Coldest feels-like
-48.8 °C
1 January 1953
Snowiest day
31.2 cm
27 September 1993
Sunniest day
15.0 h
17 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 | -9.4 °C | +5.3 °C | 4 mm | +2 mm |
| Feb | -9.3 °C | +0.9 °C | 1 mm | -3 mm |
| Mar | 3.3 °C | +3.9 °C | 12 mm | +4 mm |
| Apr | 13.0 °C | +3.0 °C | 21 mm | +6 mm |
| May | 19.3 °C | +0.9 °C | 10 mm | -16 mm |
| Jun | 25.9 °C | +1.6 °C | 35 mm | -13 mm |
| Jul | 27.3 °C | +1.0 °C | 101 mm | +27 mm |
| Aug | 24.3 °C | +0.1 °C | 44 mm | -20 mm |
| Sep | 20.5 °C | +2.8 °C | 30 mm | -9 mm |
| Oct | 6.6 °C | -1.9 °C | 8 mm | -7 mm |
| Nov | -0.4 °C | +3.6 °C | 11 mm | +5 mm |
| Dec | -12.3 °C | +0.2 °C | 1 mm | -2 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 Choibalsan?
Choibalsan has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 1.4 °C and it receives 303 mm of precipitation per year.
What is the hottest day ever recorded in Choibalsan?
The hottest day measured in Choibalsan between 1940 and 2025 was 12 July 1942, reaching 41.7 °C.
What is the coldest day in Choibalsan?
The coldest day measured in Choibalsan between 1940 and 2025 was 1 January 1953, at -42.8 °C.
Does it snow in Choibalsan?
Yes. Choibalsan gets on average 33.1 cm of snow per year and has around 204 frost days.
Has the climate of Choibalsan warmed?
Yes: Choibalsan warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Choibalsan?
The wettest day measured in Choibalsan between 1940 and 2025 was 2 September 1955, with 63 mm of rain in 24 hours.
What was the windiest day in Choibalsan?
The windiest day measured in Choibalsan between 1940 and 2025 was 19 June 2009, with winds reaching 63.1 km/h.
What is the warmest month in Choibalsan?
The warmest month in Choibalsan is July (20.9 °C on average); the coldest is January (-20.1 °C).
How much does it rain in Choibalsan?
Choibalsan receives on average 303 mm of precipitation per year, spread over about 56 rainy days.
Is it sunny in Choibalsan?
Choibalsan 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 Choibalsan?
The heaviest 24-hour snowfall measured in Choibalsan between 1940 and 2025 was 27 September 1993, with 31.2 cm.
Are there tropical nights in Choibalsan?
Yes: Choibalsan has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Choibalsan?
In Choibalsan, between 1940 and 2025, the highest apparent temperature reached 40.1 °C on 12 July 1942, and the lowest was -48.8 °C on 1 January 1953.
Compare Choibalsan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Choibalsan