Slantsy climate — normals and trends
Slantsy (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.3 °C and it receives 690 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 (17.6 °C on average) and the coldest is January (-6.5 °C). Rainfall peaks in August.
Slantsy averages 143 frost days, 1 hot days (≥ 30 °C) and 141 rainy days per year.
Slantsy 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 165 to 121 per year over the period.
The hottest day of the period reached 33.3 °C (on 8 August 2010) and the coldest -37.7 °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
SlantsyLeningradskaya Oblast'
- coords
- 59.12°, 28.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.3°C
Average daily high
8.3°C
Average daily low
2.0°C
Annual rainfall
690mm
Sunshine / day
7.3h
Mean relative humidity
80%
Average peak wind
17.7km/h
Seasonal range
24.1°C
Frost days (< 0 °C)
143 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
124.6 cm
Average feels-like high
5.3 °C
Average feels-like low
-1.5 °C
Average peak gust
37.2 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
33.3 °C
8 August 2010
Coldest day
-37.7 °C
30 December 1978
Wettest day
63 mm
9 July 1978
Windiest day
46.5 km/h
7 August 1967
Strongest gust
97.2 km/h
27 February 1990
Hottest feels-like
35.7 °C
7 August 2010
Coldest feels-like
-43.7 °C
10 January 1987
Snowiest day
16.5 cm
23 April 1988
Sunniest day
17.8 h
22 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 | 1.4 °C | +5.7 °C | 121 mm | +75 mm |
| Feb | -1.8 °C | +2.0 °C | 18 mm | -18 mm |
| Mar | 5.7 °C | +4.7 °C | 38 mm | +0 mm |
| Apr | 10.2 °C | +1.9 °C | 54 mm | +13 mm |
| May | 13.7 °C | -1.4 °C | 99 mm | +46 mm |
| Jun | 17.9 °C | -1.5 °C | 156 mm | +79 mm |
| Jul | 24.5 °C | +3.1 °C | 100 mm | +16 mm |
| Aug | 19.2 °C | -0.8 °C | 131 mm | +45 mm |
| Sep | 18.0 °C | +3.3 °C | 43 mm | -20 mm |
| Oct | 9.5 °C | +1.3 °C | 40 mm | -20 mm |
| Nov | 4.3 °C | +2.4 °C | 60 mm | +4 mm |
| Dec | 2.4 °C | +4.2 °C | 46 mm | -6 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 Slantsy?
Slantsy has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.3 °C and it receives 690 mm of precipitation per year.
What is the hottest day ever recorded in Slantsy?
The hottest day measured in Slantsy between 1940 and 2025 was 8 August 2010, reaching 33.3 °C.
What is the coldest day in Slantsy?
The coldest day measured in Slantsy between 1940 and 2025 was 30 December 1978, at -37.7 °C.
Does it snow in Slantsy?
Yes. Slantsy gets on average 124.6 cm of snow per year and has around 143 frost days.
Has the climate of Slantsy warmed?
Yes: Slantsy warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Slantsy?
The wettest day measured in Slantsy between 1940 and 2025 was 9 July 1978, with 63 mm of rain in 24 hours.
What was the windiest day in Slantsy?
The windiest day measured in Slantsy between 1940 and 2025 was 7 August 1967, with winds reaching 46.5 km/h.
What is the warmest month in Slantsy?
The warmest month in Slantsy is July (17.6 °C on average); the coldest is January (-6.5 °C).
How much does it rain in Slantsy?
Slantsy receives on average 690 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in Slantsy?
Slantsy gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Slantsy?
The heaviest 24-hour snowfall measured in Slantsy between 1940 and 2025 was 23 April 1988, with 16.5 cm.
Are there tropical nights in Slantsy?
Yes: Slantsy has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Slantsy?
In Slantsy, between 1940 and 2025, the highest apparent temperature reached 35.7 °C on 7 August 2010, and the lowest was -43.7 °C on 10 January 1987.
Compare Slantsy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Slantsy