Semyonov climate — normals and trends
Semyonov (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.0 °C and it receives 651 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 (18.7 °C on average) and the coldest is January (-11.2 °C). Rainfall peaks in July.
Semyonov averages 169 frost days, 5 hot days (≥ 30 °C) and 133 rainy days per year.
Semyonov 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 181 to 157 per year over the period.
The hottest day of the period reached 37.0 °C (on 29 July 2010) and the coldest -46.7 °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
SemyonovNizhny Novgorod Oblast
- coords
- 56.79°, 44.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.0°C
Average daily high
7.6°C
Average daily low
0.2°C
Annual rainfall
651mm
Sunshine / day
6.9h
Mean relative humidity
77%
Average peak wind
16.9km/h
Seasonal range
29.9°C
Frost days (< 0 °C)
169 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
146.1 cm
Average feels-like high
4.4 °C
Average feels-like low
-3.4 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
9.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.46 · 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
37.0 °C
29 July 2010
Coldest day
-46.7 °C
31 December 1978
Wettest day
44 mm
20 August 2006
Windiest day
44.1 km/h
24 October 1989
Strongest gust
91.8 km/h
16 September 1986
Hottest feels-like
39.3 °C
6 August 2010
Coldest feels-like
-51.9 °C
31 December 1978
Snowiest day
23.8 cm
17 October 1971
Sunniest day
16.7 h
26 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 | -1.1 °C | +7.4 °C | 53 mm | +14 mm |
| Feb | -4.3 °C | +2.5 °C | 15 mm | -19 mm |
| Mar | 6.1 °C | +6.4 °C | 29 mm | -6 mm |
| Apr | 11.9 °C | +2.7 °C | 58 mm | +17 mm |
| May | 18.3 °C | +1.2 °C | 66 mm | +7 mm |
| Jun | 20.8 °C | -0.5 °C | 68 mm | -4 mm |
| Jul | 25.3 °C | +2.1 °C | 65 mm | -16 mm |
| Aug | 21.3 °C | 0.0 °C | 125 mm | +55 mm |
| Sep | 17.2 °C | +2.3 °C | 17 mm | -43 mm |
| Oct | 9.0 °C | +2.4 °C | 42 mm | -21 mm |
| Nov | 4.2 °C | +5.2 °C | 68 mm | +17 mm |
| Dec | -2.4 °C | +3.4 °C | 41 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 Semyonov?
Semyonov has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.0 °C and it receives 651 mm of precipitation per year.
What is the hottest day ever recorded in Semyonov?
The hottest day measured in Semyonov between 1940 and 2025 was 29 July 2010, reaching 37.0 °C.
What is the coldest day in Semyonov?
The coldest day measured in Semyonov between 1940 and 2025 was 31 December 1978, at -46.7 °C.
Does it snow in Semyonov?
Yes. Semyonov gets on average 146.1 cm of snow per year and has around 169 frost days.
Has the climate of Semyonov warmed?
Yes: Semyonov warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Semyonov?
The wettest day measured in Semyonov between 1940 and 2025 was 20 August 2006, with 44 mm of rain in 24 hours.
What was the windiest day in Semyonov?
The windiest day measured in Semyonov between 1940 and 2025 was 24 October 1989, with winds reaching 44.1 km/h.
What is the warmest month in Semyonov?
The warmest month in Semyonov is July (18.7 °C on average); the coldest is January (-11.2 °C).
How much does it rain in Semyonov?
Semyonov receives on average 651 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Semyonov?
Semyonov gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.
What is the biggest single-day snowfall in Semyonov?
The heaviest 24-hour snowfall measured in Semyonov between 1940 and 2025 was 17 October 1971, with 23.8 cm.
Are there tropical nights in Semyonov?
Yes: Semyonov has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Semyonov?
In Semyonov, between 1940 and 2025, the highest apparent temperature reached 39.3 °C on 6 August 2010, and the lowest was -51.9 °C on 31 December 1978.
Compare Semyonov with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Semyonov