Ozerniy climate — normals and trends
Ozerniy (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.2 °C and it receives 686 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 (17.4 °C on average) and the coldest is January (-8.9 °C). Rainfall peaks in July.
Ozerniy averages 161 frost days, 1 hot days (≥ 30 °C) and 143 rainy days per year.
Ozerniy has warmed by +2.8 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 174 to 148 per year over the period.
The hottest day of the period reached 36.0 °C (on 4 August 2010) and the coldest -43.1 °C (on 30 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
OzerniyTver Oblast
- coords
- 57.87°, 33.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.2°C
Average daily high
7.7°C
Average daily low
0.7°C
Annual rainfall
686mm
Sunshine / day
6.6h
Mean relative humidity
79%
Average peak wind
17.6km/h
Seasonal range
26.3°C
Frost days (< 0 °C)
161 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
135.8 cm
Average feels-like high
4.4 °C
Average feels-like low
-3.0 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.44 · 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
36.0 °C
4 August 2010
Coldest day
-43.1 °C
30 December 1978
Wettest day
74 mm
9 August 2019
Windiest day
45.5 km/h
3 December 1961
Strongest gust
99.7 km/h
4 August 1988
Hottest feels-like
37.8 °C
7 August 2010
Coldest feels-like
-48.5 °C
30 December 1978
Snowiest day
22.3 cm
19 October 1992
Sunniest day
17.2 h
21 June 2012
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 | 0.9 °C | +7.3 °C | 69 mm | +32 mm |
| Feb | -2.9 °C | +2.2 °C | 17 mm | -15 mm |
| Mar | 6.4 °C | +5.9 °C | 43 mm | +7 mm |
| Apr | 10.8 °C | +2.2 °C | 46 mm | +2 mm |
| May | 15.9 °C | +0.2 °C | 65 mm | +1 mm |
| Jun | 18.5 °C | -1.2 °C | 147 mm | +69 mm |
| Jul | 25.2 °C | +3.6 °C | 92 mm | +3 mm |
| Aug | 19.6 °C | -0.4 °C | 92 mm | +10 mm |
| Sep | 17.3 °C | +3.1 °C | 40 mm | -25 mm |
| Oct | 7.9 °C | +0.9 °C | 53 mm | -9 mm |
| Nov | 3.3 °C | +3.1 °C | 55 mm | +3 mm |
| Dec | 0.0 °C | +3.9 °C | 58 mm | +14 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 Ozerniy?
Ozerniy has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.2 °C and it receives 686 mm of precipitation per year.
What is the hottest day ever recorded in Ozerniy?
The hottest day measured in Ozerniy between 1940 and 2025 was 4 August 2010, reaching 36.0 °C.
What is the coldest day in Ozerniy?
The coldest day measured in Ozerniy between 1940 and 2025 was 30 December 1978, at -43.1 °C.
Does it snow in Ozerniy?
Yes. Ozerniy gets on average 135.8 cm of snow per year and has around 161 frost days.
Has the climate of Ozerniy warmed?
Yes: Ozerniy warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ozerniy?
The wettest day measured in Ozerniy between 1940 and 2025 was 9 August 2019, with 74 mm of rain in 24 hours.
What was the windiest day in Ozerniy?
The windiest day measured in Ozerniy between 1940 and 2025 was 3 December 1961, with winds reaching 45.5 km/h.
What is the warmest month in Ozerniy?
The warmest month in Ozerniy is July (17.4 °C on average); the coldest is January (-8.9 °C).
How much does it rain in Ozerniy?
Ozerniy receives on average 686 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Ozerniy?
Ozerniy gets on average 6.6 hours of sunshine per day, roughly 2,409 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ozerniy?
The heaviest 24-hour snowfall measured in Ozerniy between 1940 and 2025 was 19 October 1992, with 22.3 cm.
Are there tropical nights in Ozerniy?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Ozerniy.
What was the most extreme apparent temperature in Ozerniy?
In Ozerniy, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 7 August 2010, and the lowest was -48.5 °C on 30 December 1978.
Compare Ozerniy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ozerniy