Pervomayskiy climate — normals and trends
Pervomayskiy (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 2.1 °C and it receives 456 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 (19.9 °C on average) and the coldest is January (-16.3 °C). Rainfall peaks in July.
Pervomayskiy averages 188 frost days, 9 hot days (≥ 30 °C) and 105 rainy days per year.
Pervomayskiy has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 195 to 181 per year over the period.
The hottest day of the period reached 37.4 °C (on 15 July 1992) and the coldest -46.8 °C (on 7 January 2001).
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
PervomayskiyAltai Krai
- coords
- 52.92°, 81.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.1°C
Average daily high
6.9°C
Average daily low
-2.6°C
Annual rainfall
456mm
Sunshine / day
8.4h
Mean relative humidity
71%
Average peak wind
17.8km/h
Seasonal range
36.2°C
Frost days (< 0 °C)
188 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
105 d/yr
Annual snowfall
120.7 cm
Average feels-like high
3.3 °C
Average feels-like low
-6.5 °C
Average peak gust
35.8 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
12.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.21 · 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
37.4 °C
15 July 1992
Coldest day
-46.8 °C
7 January 2001
Wettest day
39 mm
23 July 1982
Windiest day
51.1 km/h
22 April 1985
Strongest gust
119.5 km/h
22 April 1985
Hottest feels-like
42.4 °C
22 July 1953
Coldest feels-like
-52.1 °C
7 January 2001
Snowiest day
15.5 cm
26 March 2018
Sunniest day
16.2 h
23 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 | -5.9 °C | +6.7 °C | 39 mm | +13 mm |
| Feb | -6.1 °C | +4.6 °C | 16 mm | -5 mm |
| Mar | 1.3 °C | +4.4 °C | 26 mm | +1 mm |
| Apr | 15.5 °C | +6.8 °C | 36 mm | +6 mm |
| May | 21.0 °C | +2.8 °C | 35 mm | -4 mm |
| Jun | 27.1 °C | +3.5 °C | 73 mm | +25 mm |
| Jul | 25.4 °C | +0.3 °C | 43 mm | -18 mm |
| Aug | 21.5 °C | -1.3 °C | 124 mm | +78 mm |
| Sep | 18.3 °C | +1.5 °C | 24 mm | -13 mm |
| Oct | 5.7 °C | -1.8 °C | 24 mm | -19 mm |
| Nov | -0.2 °C | +3.5 °C | 95 mm | +51 mm |
| Dec | -6.6 °C | +3.6 °C | 47 mm | +12 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 warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 2.1 °C and it receives 456 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 15 July 1992, reaching 37.4 °C.
What is the coldest day in Pervomayskiy?
The coldest day measured in Pervomayskiy between 1940 and 2025 was 7 January 2001, at -46.8 °C.
Does it snow in Pervomayskiy?
Yes. Pervomayskiy gets on average 120.7 cm of snow per year and has around 188 frost days.
Has the climate of Pervomayskiy warmed?
Yes: Pervomayskiy warmed by +1.9 °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 23 July 1982, with 39 mm of rain in 24 hours.
What was the windiest day in Pervomayskiy?
The windiest day measured in Pervomayskiy between 1940 and 2025 was 22 April 1985, with winds reaching 51.1 km/h.
What is the warmest month in Pervomayskiy?
The warmest month in Pervomayskiy is July (19.9 °C on average); the coldest is January (-16.3 °C).
How much does it rain in Pervomayskiy?
Pervomayskiy receives on average 456 mm of precipitation per year, spread over about 105 rainy days.
Is it sunny in Pervomayskiy?
Pervomayskiy gets on average 8.4 hours of sunshine per day, roughly 3,066 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 26 March 2018, with 15.5 cm.
Are there tropical nights in Pervomayskiy?
Yes: Pervomayskiy has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pervomayskiy?
In Pervomayskiy, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 22 July 1953, and the lowest was -52.1 °C on 7 January 2001.
Compare Pervomayskiy with another city
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Nearby cities
The climate around Pervomayskiy