Aleysk climate — normals and trends
Aleysk (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 2.7 °C and it receives 490 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 (20.5 °C on average) and the coldest is January (-16.0 °C). Rainfall peaks in July.
Aleysk averages 184 frost days, 14 hot days (≥ 30 °C) and 109 rainy days per year.
Aleysk has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 193 to 175 per year over the period.
The hottest day of the period reached 39.8 °C (on 15 July 1992) and the coldest -49.6 °C (on 7 January 2001).
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
AleyskAltai Krai
- coords
- 52.50°, 82.77°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.7°C
Average daily high
7.7°C
Average daily low
-2.2°C
Annual rainfall
490mm
Sunshine / day
8.6h
Mean relative humidity
69%
Average peak wind
19.4km/h
Seasonal range
36.5°C
Frost days (< 0 °C)
184 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
120.8 cm
Average feels-like high
4.0 °C
Average feels-like low
-6.2 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
12.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.29 · 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
39.8 °C
15 July 1992
Coldest day
-49.6 °C
7 January 2001
Wettest day
40 mm
20 August 1998
Windiest day
62.3 km/h
23 February 1942
Strongest gust
111.6 km/h
22 April 1985
Hottest feels-like
43.0 °C
22 July 1953
Coldest feels-like
-54.5 °C
7 January 2001
Snowiest day
25.4 cm
30 March 2002
Sunniest day
15.9 h
22 June 1963
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -5.0 °C | +7.0 °C | 45 mm | +19 mm |
| Feb | -6.6 °C | +3.4 °C | 14 mm | -10 mm |
| Mar | 1.8 °C | +3.8 °C | 25 mm | -2 mm |
| Apr | 16.9 °C | +7.0 °C | 38 mm | +3 mm |
| May | 22.2 °C | +3.1 °C | 43 mm | -4 mm |
| Jun | 28.3 °C | +3.9 °C | 54 mm | +3 mm |
| Jul | 26.5 °C | +0.6 °C | 54 mm | -8 mm |
| Aug | 22.0 °C | -1.7 °C | 117 mm | +67 mm |
| Sep | 18.7 °C | +0.9 °C | 45 mm | +7 mm |
| Oct | 6.3 °C | -2.3 °C | 22 mm | -24 mm |
| Nov | 1.1 °C | +3.9 °C | 68 mm | +21 mm |
| Dec | -6.5 °C | +3.2 °C | 55 mm | +17 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 Aleysk?
Aleysk has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 2.7 °C and it receives 490 mm of precipitation per year.
What is the hottest day ever recorded in Aleysk?
The hottest day measured in Aleysk between 1940 and 2025 was 15 July 1992, reaching 39.8 °C.
What is the coldest day in Aleysk?
The coldest day measured in Aleysk between 1940 and 2025 was 7 January 2001, at -49.6 °C.
Does it snow in Aleysk?
Yes. Aleysk gets on average 120.8 cm of snow per year and has around 184 frost days.
Has the climate of Aleysk warmed?
Yes: Aleysk warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aleysk?
The wettest day measured in Aleysk between 1940 and 2025 was 20 August 1998, with 40 mm of rain in 24 hours.
What was the windiest day in Aleysk?
The windiest day measured in Aleysk between 1940 and 2025 was 23 February 1942, with winds reaching 62.3 km/h.
What is the warmest month in Aleysk?
The warmest month in Aleysk is July (20.5 °C on average); the coldest is January (-16.0 °C).
How much does it rain in Aleysk?
Aleysk receives on average 490 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Aleysk?
Aleysk gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aleysk?
The heaviest 24-hour snowfall measured in Aleysk between 1940 and 2025 was 30 March 2002, with 25.4 cm.
Are there tropical nights in Aleysk?
Yes: Aleysk has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aleysk?
In Aleysk, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 22 July 1953, and the lowest was -54.5 °C on 7 January 2001.
Compare Aleysk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aleysk