Ust'-Donetskiy climate — normals and trends
Ust'-Donetskiy (Russia) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.3 °C and it receives 482 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 (23.5 °C on average) and the coldest is January (-5.2 °C). Rainfall peaks in December.
Ust'-Donetskiy averages 118 frost days, 33 hot days (≥ 30 °C) and 97 rainy days per year.
Ust'-Donetskiy has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 133 to 103 per year over the period.
The hottest day of the period reached 40.4 °C (on 13 July 2025) and the coldest -35.5 °C (on 9 January 1940).
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
Ust'-DonetskiyRostov Oblast
- coords
- 47.64°, 40.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.3°C
Average daily high
13.6°C
Average daily low
5.0°C
Annual rainfall
482mm
Sunshine / day
8.2h
Mean relative humidity
70%
Average peak wind
18.9km/h
Seasonal range
28.7°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
33 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
67.5 cm
Average feels-like high
10.7 °C
Average feels-like low
1.8 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
17 d/yr
Solar radiation
12.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.35 · 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
40.4 °C
13 July 2025
Coldest day
-35.5 °C
9 January 1940
Wettest day
41 mm
23 July 1988
Windiest day
55.5 km/h
12 April 1997
Strongest gust
96.8 km/h
24 September 2014
Hottest feels-like
41.1 °C
15 August 1948
Coldest feels-like
-42.5 °C
10 January 1940
Snowiest day
22.3 cm
6 February 2020
Sunniest day
15.0 h
15 June 2019
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 | 4.2 °C | +6.6 °C | 21 mm | -21 mm |
| Feb | -2.5 °C | -1.2 °C | 32 mm | -6 mm |
| Mar | 11.5 °C | +6.6 °C | 32 mm | -6 mm |
| Apr | 17.2 °C | +2.1 °C | 32 mm | -11 mm |
| May | 22.5 °C | +0.7 °C | 36 mm | -11 mm |
| Jun | 26.5 °C | +0.1 °C | 57 mm | +14 mm |
| Jul | 33.0 °C | +4.1 °C | 21 mm | -20 mm |
| Aug | 30.3 °C | +1.8 °C | 13 mm | -18 mm |
| Sep | 23.6 °C | +1.5 °C | 11 mm | -21 mm |
| Oct | 15.1 °C | +1.5 °C | 41 mm | +5 mm |
| Nov | 11.1 °C | +5.6 °C | 13 mm | -29 mm |
| Dec | 1.6 °C | +1.5 °C | 26 mm | -22 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 Ust'-Donetskiy?
Ust'-Donetskiy has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.3 °C and it receives 482 mm of precipitation per year.
What is the hottest day ever recorded in Ust'-Donetskiy?
The hottest day measured in Ust'-Donetskiy between 1940 and 2025 was 13 July 2025, reaching 40.4 °C.
What is the coldest day in Ust'-Donetskiy?
The coldest day measured in Ust'-Donetskiy between 1940 and 2025 was 9 January 1940, at -35.5 °C.
Does it snow in Ust'-Donetskiy?
Yes. Ust'-Donetskiy gets on average 67.5 cm of snow per year and has around 118 frost days.
Has the climate of Ust'-Donetskiy warmed?
Yes: Ust'-Donetskiy warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ust'-Donetskiy?
The wettest day measured in Ust'-Donetskiy between 1940 and 2025 was 23 July 1988, with 41 mm of rain in 24 hours.
What was the windiest day in Ust'-Donetskiy?
The windiest day measured in Ust'-Donetskiy between 1940 and 2025 was 12 April 1997, with winds reaching 55.5 km/h.
What is the warmest month in Ust'-Donetskiy?
The warmest month in Ust'-Donetskiy is July (23.5 °C on average); the coldest is January (-5.2 °C).
How much does it rain in Ust'-Donetskiy?
Ust'-Donetskiy receives on average 482 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Ust'-Donetskiy?
Ust'-Donetskiy gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ust'-Donetskiy?
The heaviest 24-hour snowfall measured in Ust'-Donetskiy between 1940 and 2025 was 6 February 2020, with 22.3 cm.
Are there tropical nights in Ust'-Donetskiy?
Yes: Ust'-Donetskiy has on average 17 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ust'-Donetskiy?
In Ust'-Donetskiy, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 15 August 1948, and the lowest was -42.5 °C on 10 January 1940.
Compare Ust'-Donetskiy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ust'-Donetskiy