Chistyye Bory climate — normals and trends
Chistyye Bory (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.4 °C and it receives 675 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 (17.9 °C on average) and the coldest is January (-11.4 °C). Rainfall peaks in July.
Chistyye Bory averages 174 frost days, 2 hot days (≥ 30 °C) and 139 rainy days per year.
Chistyye Bory has warmed by +2.7 °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 184 to 164 per year over the period.
The hottest day of the period reached 35.6 °C (on 8 August 2010) and the coldest -45.3 °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
Chistyye BoryKostroma Oblast
- coords
- 58.37°, 41.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.4°C
Average daily high
6.9°C
Average daily low
-0.4°C
Annual rainfall
675mm
Sunshine / day
6.7h
Mean relative humidity
78%
Average peak wind
16.8km/h
Seasonal range
29.3°C
Frost days (< 0 °C)
174 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
156.7 cm
Average feels-like high
3.6 °C
Average feels-like low
-4.0 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
35.6 °C
8 August 2010
Coldest day
-45.3 °C
31 December 1978
Wettest day
51 mm
24 August 1998
Windiest day
45.1 km/h
13 November 1983
Strongest gust
93.6 km/h
27 August 1986
Hottest feels-like
38.5 °C
8 August 2010
Coldest feels-like
-50.4 °C
17 January 1940
Snowiest day
15.5 cm
16 February 2016
Sunniest day
17.2 h
12 June 1941
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 | -1.0 °C | +7.7 °C | 53 mm | +15 mm |
| Feb | -3.9 °C | +3.0 °C | 13 mm | -20 mm |
| Mar | 5.4 °C | +5.9 °C | 39 mm | +1 mm |
| Apr | 10.2 °C | +2.1 °C | 54 mm | +11 mm |
| May | 17.0 °C | +1.3 °C | 90 mm | +28 mm |
| Jun | 19.5 °C | -0.5 °C | 78 mm | +2 mm |
| Jul | 25.0 °C | +2.8 °C | 55 mm | -28 mm |
| Aug | 20.2 °C | 0.0 °C | 115 mm | +40 mm |
| Sep | 16.9 °C | +3.1 °C | 30 mm | -36 mm |
| Oct | 7.5 °C | +1.6 °C | 46 mm | -17 mm |
| Nov | 3.0 °C | +4.4 °C | 62 mm | +11 mm |
| Dec | -1.9 °C | +4.1 °C | 44 mm | -2 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 Chistyye Bory?
Chistyye Bory has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.4 °C and it receives 675 mm of precipitation per year.
What is the hottest day ever recorded in Chistyye Bory?
The hottest day measured in Chistyye Bory between 1940 and 2025 was 8 August 2010, reaching 35.6 °C.
What is the coldest day in Chistyye Bory?
The coldest day measured in Chistyye Bory between 1940 and 2025 was 31 December 1978, at -45.3 °C.
Does it snow in Chistyye Bory?
Yes. Chistyye Bory gets on average 156.7 cm of snow per year and has around 174 frost days.
Has the climate of Chistyye Bory warmed?
Yes: Chistyye Bory warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chistyye Bory?
The wettest day measured in Chistyye Bory between 1940 and 2025 was 24 August 1998, with 51 mm of rain in 24 hours.
What was the windiest day in Chistyye Bory?
The windiest day measured in Chistyye Bory between 1940 and 2025 was 13 November 1983, with winds reaching 45.1 km/h.
What is the warmest month in Chistyye Bory?
The warmest month in Chistyye Bory is July (17.9 °C on average); the coldest is January (-11.4 °C).
How much does it rain in Chistyye Bory?
Chistyye Bory receives on average 675 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Chistyye Bory?
Chistyye Bory 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 Chistyye Bory?
The heaviest 24-hour snowfall measured in Chistyye Bory between 1940 and 2025 was 16 February 2016, with 15.5 cm.
Are there tropical nights in Chistyye Bory?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Chistyye Bory.
What was the most extreme apparent temperature in Chistyye Bory?
In Chistyye Bory, between 1940 and 2025, the highest apparent temperature reached 38.5 °C on 8 August 2010, and the lowest was -50.4 °C on 17 January 1940.
Compare Chistyye Bory with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chistyye Bory