Ostrovskoye climate — normals and trends
Ostrovskoye (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.6 °C and it receives 672 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 (18.2 °C on average) and the coldest is January (-11.2 °C). Rainfall peaks in July.
Ostrovskoye averages 172 frost days, 3 hot days (≥ 30 °C) and 137 rainy days per year.
Ostrovskoye 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 184 to 160 per year over the period.
The hottest day of the period reached 35.9 °C (on 7 August 2010) and the coldest -45.5 °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
OstrovskoyeKostroma Oblast
- coords
- 57.81°, 42.24°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.6°C
Average daily high
7.1°C
Average daily low
-0.2°C
Annual rainfall
672mm
Sunshine / day
6.7h
Mean relative humidity
78%
Average peak wind
17.1km/h
Seasonal range
29.4°C
Frost days (< 0 °C)
172 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
155.5 cm
Average feels-like high
3.9 °C
Average feels-like low
-3.8 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
9.6 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
35.9 °C
7 August 2010
Coldest day
-45.5 °C
31 December 1978
Wettest day
66 mm
24 August 1998
Windiest day
44.1 km/h
24 October 1989
Strongest gust
90.4 km/h
4 June 1947
Hottest feels-like
38.8 °C
7 August 2010
Coldest feels-like
-50.8 °C
31 December 1978
Snowiest day
17.6 cm
4 February 2018
Sunniest day
17.2 h
20 June 1950
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 | +7.7 °C | 46 mm | +6 mm |
| Feb | -3.5 °C | +3.4 °C | 13 mm | -22 mm |
| Mar | 5.8 °C | +6.3 °C | 37 mm | -1 mm |
| Apr | 10.8 °C | +2.5 °C | 49 mm | +7 mm |
| May | 17.1 °C | +1.1 °C | 99 mm | +37 mm |
| Jun | 19.8 °C | -0.6 °C | 81 mm | +5 mm |
| Jul | 25.3 °C | +2.7 °C | 54 mm | -29 mm |
| Aug | 20.4 °C | -0.2 °C | 107 mm | +37 mm |
| Sep | 17.1 °C | +2.9 °C | 25 mm | -41 mm |
| Oct | 7.9 °C | +1.7 °C | 49 mm | -14 mm |
| Nov | 3.3 °C | +4.5 °C | 58 mm | +6 mm |
| Dec | -1.8 °C | +4.1 °C | 42 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 Ostrovskoye?
Ostrovskoye has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.6 °C and it receives 672 mm of precipitation per year.
What is the hottest day ever recorded in Ostrovskoye?
The hottest day measured in Ostrovskoye between 1940 and 2025 was 7 August 2010, reaching 35.9 °C.
What is the coldest day in Ostrovskoye?
The coldest day measured in Ostrovskoye between 1940 and 2025 was 31 December 1978, at -45.5 °C.
Does it snow in Ostrovskoye?
Yes. Ostrovskoye gets on average 155.5 cm of snow per year and has around 172 frost days.
Has the climate of Ostrovskoye warmed?
Yes: Ostrovskoye warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ostrovskoye?
The wettest day measured in Ostrovskoye between 1940 and 2025 was 24 August 1998, with 66 mm of rain in 24 hours.
What was the windiest day in Ostrovskoye?
The windiest day measured in Ostrovskoye between 1940 and 2025 was 24 October 1989, with winds reaching 44.1 km/h.
What is the warmest month in Ostrovskoye?
The warmest month in Ostrovskoye is July (18.2 °C on average); the coldest is January (-11.2 °C).
How much does it rain in Ostrovskoye?
Ostrovskoye receives on average 672 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Ostrovskoye?
Ostrovskoye gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ostrovskoye?
The heaviest 24-hour snowfall measured in Ostrovskoye between 1940 and 2025 was 4 February 2018, with 17.6 cm.
Are there tropical nights in Ostrovskoye?
Yes: Ostrovskoye has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ostrovskoye?
In Ostrovskoye, between 1940 and 2025, the highest apparent temperature reached 38.8 °C on 7 August 2010, and the lowest was -50.8 °C on 31 December 1978.
Compare Ostrovskoye with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ostrovskoye