Pervomaysk climate — normals and trends
Pervomaysk (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.6 °C and it receives 618 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 (-10.5 °C). Rainfall peaks in July.
Pervomaysk averages 164 frost days, 7 hot days (≥ 30 °C) and 129 rainy days per year.
Pervomaysk has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 176 to 152 per year over the period.
The hottest day of the period reached 38.4 °C (on 29 July 2010) and the coldest -42.9 °C (on 31 December 1978).
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
PervomayskNizhny Novgorod Oblast
- coords
- 54.87°, 43.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.6°C
Average daily high
8.4°C
Average daily low
0.8°C
Annual rainfall
618mm
Sunshine / day
7.1h
Mean relative humidity
76%
Average peak wind
17.2km/h
Seasonal range
29.7°C
Frost days (< 0 °C)
164 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
138.3 cm
Average feels-like high
5.2 °C
Average feels-like low
-2.8 °C
Average peak gust
35.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
10.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.47 · 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
38.4 °C
29 July 2010
Coldest day
-42.9 °C
31 December 1978
Wettest day
44 mm
9 July 2003
Windiest day
44.8 km/h
24 March 1971
Strongest gust
90.7 km/h
24 March 1994
Hottest feels-like
39.8 °C
2 August 2010
Coldest feels-like
-48.4 °C
31 December 1978
Snowiest day
16.8 cm
2 October 1998
Sunniest day
16.1 h
28 June 2022
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 | -0.6 °C | +7.2 °C | 57 mm | +18 mm |
| Feb | -5.1 °C | +1.3 °C | 22 mm | -14 mm |
| Mar | 6.9 °C | +7.1 °C | 36 mm | +0 mm |
| Apr | 14.3 °C | +4.1 °C | 32 mm | -10 mm |
| May | 19.3 °C | +1.2 °C | 30 mm | -24 mm |
| Jun | 21.4 °C | -0.6 °C | 69 mm | +6 mm |
| Jul | 26.1 °C | +2.2 °C | 56 mm | -19 mm |
| Aug | 22.5 °C | +0.1 °C | 78 mm | +17 mm |
| Sep | 17.9 °C | +1.9 °C | 8 mm | -48 mm |
| Oct | 10.4 °C | +2.8 °C | 49 mm | -8 mm |
| Nov | 5.6 °C | +5.9 °C | 66 mm | +16 mm |
| Dec | -2.2 °C | +3.0 °C | 46 mm | -3 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 Pervomaysk?
Pervomaysk has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.6 °C and it receives 618 mm of precipitation per year.
What is the hottest day ever recorded in Pervomaysk?
The hottest day measured in Pervomaysk between 1940 and 2025 was 29 July 2010, reaching 38.4 °C.
What is the coldest day in Pervomaysk?
The coldest day measured in Pervomaysk between 1940 and 2025 was 31 December 1978, at -42.9 °C.
Does it snow in Pervomaysk?
Yes. Pervomaysk gets on average 138.3 cm of snow per year and has around 164 frost days.
Has the climate of Pervomaysk warmed?
Yes: Pervomaysk warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pervomaysk?
The wettest day measured in Pervomaysk between 1940 and 2025 was 9 July 2003, with 44 mm of rain in 24 hours.
What was the windiest day in Pervomaysk?
The windiest day measured in Pervomaysk between 1940 and 2025 was 24 March 1971, with winds reaching 44.8 km/h.
What is the warmest month in Pervomaysk?
The warmest month in Pervomaysk is July (19.2 °C on average); the coldest is January (-10.5 °C).
How much does it rain in Pervomaysk?
Pervomaysk receives on average 618 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Pervomaysk?
Pervomaysk gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Pervomaysk?
The heaviest 24-hour snowfall measured in Pervomaysk between 1940 and 2025 was 2 October 1998, with 16.8 cm.
Are there tropical nights in Pervomaysk?
Yes: Pervomaysk has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pervomaysk?
In Pervomaysk, between 1940 and 2025, the highest apparent temperature reached 39.8 °C on 2 August 2010, and the lowest was -48.4 °C on 31 December 1978.
Compare Pervomaysk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Pervomaysk