Pervomayskiy climate — normals and trends
Pervomayskiy (Russia) has a dry-winter subarctic climate (Dwc) under the Köppen-Geiger classification. Its mean annual temperature is -1.4 °C and it receives 395 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 (19.2 °C on average) and the coldest is January (-24.5 °C). Rainfall peaks in July.
Pervomayskiy averages 221 frost days, 6 hot days (≥ 30 °C) and 65 rainy days per year.
Pervomayskiy has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.5 °C (on 27 June 2010) and the coldest -47.2 °C (on 1 January 2010).
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
PervomayskiyZabaykalskiy (Transbaikal) Kray
- coords
- 51.66°, 115.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-1.4°C
Average daily high
4.8°C
Average daily low
-7.3°C
Annual rainfall
395mm
Sunshine / day
9.6h
Mean relative humidity
64%
Average peak wind
14.7km/h
Seasonal range
43.7°C
Frost days (< 0 °C)
221 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
65 d/yr
Annual snowfall
39.3 cm
Average feels-like high
1.2 °C
Average feels-like low
-11.2 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.20 · 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
39.5 °C
27 June 2010
Coldest day
-47.2 °C
1 January 2010
Wettest day
61 mm
1 August 1951
Windiest day
45.1 km/h
28 March 1971
Strongest gust
92.5 km/h
17 May 2009
Hottest feels-like
39.7 °C
27 June 2010
Coldest feels-like
-52.2 °C
3 January 2010
Snowiest day
14.5 cm
9 October 1959
Sunniest day
15.9 h
14 June 1965
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 | -15.4 °C | +3.1 °C | 1 mm | -1 mm |
| Feb | -12.6 °C | -0.1 °C | 3 mm | +0 mm |
| Mar | -0.9 °C | +1.5 °C | 2 mm | -6 mm |
| Apr | 10.6 °C | +2.8 °C | 20 mm | +1 mm |
| May | 18.0 °C | +1.7 °C | 14 mm | -21 mm |
| Jun | 25.0 °C | +2.1 °C | 30 mm | -32 mm |
| Jul | 25.0 °C | +0.2 °C | 115 mm | +16 mm |
| Aug | 22.0 °C | -0.2 °C | 124 mm | +37 mm |
| Sep | 17.7 °C | +2.2 °C | 67 mm | +13 mm |
| Oct | 3.1 °C | -2.6 °C | 24 mm | +7 mm |
| Nov | -4.7 °C | +2.6 °C | 20 mm | +13 mm |
| Dec | -17.6 °C | -0.8 °C | 8 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 Pervomayskiy?
Pervomayskiy has a dry-winter subarctic climate (Köppen Dwc). Over 1940-2025, the average annual temperature is -1.4 °C and it receives 395 mm of precipitation per year.
What is the hottest day ever recorded in Pervomayskiy?
The hottest day measured in Pervomayskiy between 1940 and 2025 was 27 June 2010, reaching 39.5 °C.
What is the coldest day in Pervomayskiy?
The coldest day measured in Pervomayskiy between 1940 and 2025 was 1 January 2010, at -47.2 °C.
Does it snow in Pervomayskiy?
Yes. Pervomayskiy gets on average 39.3 cm of snow per year and has around 221 frost days.
Has the climate of Pervomayskiy warmed?
Yes: Pervomayskiy warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pervomayskiy?
The wettest day measured in Pervomayskiy between 1940 and 2025 was 1 August 1951, with 61 mm of rain in 24 hours.
What was the windiest day in Pervomayskiy?
The windiest day measured in Pervomayskiy between 1940 and 2025 was 28 March 1971, with winds reaching 45.1 km/h.
What is the warmest month in Pervomayskiy?
The warmest month in Pervomayskiy is July (19.2 °C on average); the coldest is January (-24.5 °C).
How much does it rain in Pervomayskiy?
Pervomayskiy receives on average 395 mm of precipitation per year, spread over about 65 rainy days.
Is it sunny in Pervomayskiy?
Pervomayskiy gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Pervomayskiy?
The heaviest 24-hour snowfall measured in Pervomayskiy between 1940 and 2025 was 9 October 1959, with 14.5 cm.
Are there tropical nights in Pervomayskiy?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Pervomayskiy.
What was the most extreme apparent temperature in Pervomayskiy?
In Pervomayskiy, between 1940 and 2025, the highest apparent temperature reached 39.7 °C on 27 June 2010, and the lowest was -52.2 °C on 3 January 2010.
Compare Pervomayskiy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Pervomayskiy