Karsun climate — normals and trends
Karsun (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 554 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 (19.3 °C on average) and the coldest is January (-11.3 °C). Rainfall peaks in July.
Karsun averages 166 frost days, 9 hot days (≥ 30 °C) and 119 rainy days per year.
Karsun has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 179 to 153 per year over the period.
The hottest day of the period reached 38.9 °C (on 1 August 2010) and the coldest -44.6 °C (on 21 January 1942).
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
KarsunUlyanovsk Oblast
- coords
- 54.20°, 46.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.4°C
Average daily high
8.3°C
Average daily low
0.4°C
Annual rainfall
554mm
Sunshine / day
7.3h
Mean relative humidity
75%
Average peak wind
17.7km/h
Seasonal range
30.6°C
Frost days (< 0 °C)
166 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
119.9 cm
Average feels-like high
5.0 °C
Average feels-like low
-3.2 °C
Average peak gust
35.4 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.48 · 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
38.9 °C
1 August 2010
Coldest day
-44.6 °C
21 January 1942
Wettest day
56 mm
5 July 2017
Windiest day
51.6 km/h
20 October 1973
Strongest gust
102.2 km/h
20 October 1973
Hottest feels-like
39.2 °C
1 August 2010
Coldest feels-like
-50.1 °C
21 January 1942
Snowiest day
18.1 cm
12 April 1953
Sunniest day
16.0 h
23 June 2023
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 | -1.2 °C | +7.4 °C | 51 mm | +19 mm |
| Feb | -5.4 °C | +1.8 °C | 16 mm | -12 mm |
| Mar | 6.9 °C | +7.7 °C | 28 mm | -5 mm |
| Apr | 15.8 °C | +5.5 °C | 39 mm | -3 mm |
| May | 20.0 °C | +1.5 °C | 58 mm | +7 mm |
| Jun | 22.4 °C | 0.0 °C | 77 mm | +16 mm |
| Jul | 26.4 °C | +2.2 °C | 53 mm | -15 mm |
| Aug | 23.9 °C | +1.1 °C | 54 mm | -6 mm |
| Sep | 18.2 °C | +1.8 °C | 10 mm | -42 mm |
| Oct | 10.7 °C | +3.2 °C | 32 mm | -19 mm |
| Nov | 5.7 °C | +6.3 °C | 44 mm | +4 mm |
| Dec | -3.0 °C | +2.8 °C | 41 mm | +4 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 Karsun?
Karsun has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.4 °C and it receives 554 mm of precipitation per year.
What is the hottest day ever recorded in Karsun?
The hottest day measured in Karsun between 1940 and 2025 was 1 August 2010, reaching 38.9 °C.
What is the coldest day in Karsun?
The coldest day measured in Karsun between 1940 and 2025 was 21 January 1942, at -44.6 °C.
Does it snow in Karsun?
Yes. Karsun gets on average 119.9 cm of snow per year and has around 166 frost days.
Has the climate of Karsun warmed?
Yes: Karsun warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Karsun?
The wettest day measured in Karsun between 1940 and 2025 was 5 July 2017, with 56 mm of rain in 24 hours.
What was the windiest day in Karsun?
The windiest day measured in Karsun between 1940 and 2025 was 20 October 1973, with winds reaching 51.6 km/h.
What is the warmest month in Karsun?
The warmest month in Karsun is July (19.3 °C on average); the coldest is January (-11.3 °C).
How much does it rain in Karsun?
Karsun receives on average 554 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Karsun?
Karsun 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 Karsun?
The heaviest 24-hour snowfall measured in Karsun between 1940 and 2025 was 12 April 1953, with 18.1 cm.
Are there tropical nights in Karsun?
Yes: Karsun has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Karsun?
In Karsun, between 1940 and 2025, the highest apparent temperature reached 39.2 °C on 1 August 2010, and the lowest was -50.1 °C on 21 January 1942.
Compare Karsun with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Karsun