Bolshoye Kozino climate — normals and trends
Bolshoye Kozino (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.4 °C and it receives 617 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 (19.1 °C on average) and the coldest is January (-10.7 °C). Rainfall peaks in July.
Bolshoye Kozino averages 163 frost days, 5 hot days (≥ 30 °C) and 130 rainy days per year.
Bolshoye Kozino 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 175 to 151 per year over the period.
The hottest day of the period reached 37.6 °C (on 29 July 2010) and the coldest -44.1 °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
Bolshoye KozinoNizhny Novgorod Oblast
- coords
- 56.40°, 43.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.4°C
Average daily high
7.9°C
Average daily low
0.7°C
Annual rainfall
617mm
Sunshine / day
6.9h
Mean relative humidity
77%
Average peak wind
17.5km/h
Seasonal range
29.8°C
Frost days (< 0 °C)
163 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
132.9 cm
Average feels-like high
4.7 °C
Average feels-like low
-2.9 °C
Average peak gust
34.5 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
10.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.46 · 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
37.6 °C
29 July 2010
Coldest day
-44.1 °C
31 December 1978
Wettest day
56 mm
22 July 2009
Windiest day
44.8 km/h
24 October 1989
Strongest gust
91.8 km/h
16 September 1986
Hottest feels-like
39.9 °C
6 August 2010
Coldest feels-like
-49.5 °C
31 December 1978
Snowiest day
21.8 cm
17 October 1971
Sunniest day
16.6 h
27 June 2009
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 | -0.7 °C | +7.5 °C | 52 mm | +15 mm |
| Feb | -4.1 °C | +2.5 °C | 16 mm | -16 mm |
| Mar | 6.5 °C | +6.8 °C | 28 mm | -4 mm |
| Apr | 12.2 °C | +2.8 °C | 56 mm | +17 mm |
| May | 18.6 °C | +1.2 °C | 65 mm | +10 mm |
| Jun | 21.0 °C | -0.6 °C | 68 mm | 0 mm |
| Jul | 25.8 °C | +2.3 °C | 50 mm | -24 mm |
| Aug | 21.7 °C | 0.0 °C | 111 mm | +44 mm |
| Sep | 17.5 °C | +2.3 °C | 16 mm | -43 mm |
| Oct | 9.3 °C | +2.3 °C | 41 mm | -20 mm |
| Nov | 4.6 °C | +5.3 °C | 68 mm | +20 mm |
| Dec | -1.8 °C | +3.6 °C | 36 mm | -9 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 Bolshoye Kozino?
Bolshoye Kozino has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.4 °C and it receives 617 mm of precipitation per year.
What is the hottest day ever recorded in Bolshoye Kozino?
The hottest day measured in Bolshoye Kozino between 1940 and 2025 was 29 July 2010, reaching 37.6 °C.
What is the coldest day in Bolshoye Kozino?
The coldest day measured in Bolshoye Kozino between 1940 and 2025 was 31 December 1978, at -44.1 °C.
Does it snow in Bolshoye Kozino?
Yes. Bolshoye Kozino gets on average 132.9 cm of snow per year and has around 163 frost days.
Has the climate of Bolshoye Kozino warmed?
Yes: Bolshoye Kozino warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bolshoye Kozino?
The wettest day measured in Bolshoye Kozino between 1940 and 2025 was 22 July 2009, with 56 mm of rain in 24 hours.
What was the windiest day in Bolshoye Kozino?
The windiest day measured in Bolshoye Kozino between 1940 and 2025 was 24 October 1989, with winds reaching 44.8 km/h.
What is the warmest month in Bolshoye Kozino?
The warmest month in Bolshoye Kozino is July (19.1 °C on average); the coldest is January (-10.7 °C).
How much does it rain in Bolshoye Kozino?
Bolshoye Kozino receives on average 617 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Bolshoye Kozino?
Bolshoye Kozino gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bolshoye Kozino?
The heaviest 24-hour snowfall measured in Bolshoye Kozino between 1940 and 2025 was 17 October 1971, with 21.8 cm.
Are there tropical nights in Bolshoye Kozino?
Yes: Bolshoye Kozino has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bolshoye Kozino?
In Bolshoye Kozino, between 1940 and 2025, the highest apparent temperature reached 39.9 °C on 6 August 2010, and the lowest was -49.5 °C on 31 December 1978.
Compare Bolshoye Kozino with another city
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Nearby cities
The climate around Bolshoye Kozino