Ust'-Kut climate — normals and trends
Ust'-Kut (Russia) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is -3.3 °C and it receives 483 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 (17.5 °C on average) and the coldest is January (-24.9 °C). Rainfall peaks in July.
Ust'-Kut averages 234 frost days, 3 hot days (≥ 30 °C) and 119 rainy days per year.
Ust'-Kut 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 238 to 230 per year over the period.
The hottest day of the period reached 34.3 °C (on 2 July 2024) and the coldest -57.9 °C (on 3 January 1951).
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
Ust'-KutIrkutsk Oblast
- coords
- 56.80°, 105.79°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-3.3°C
Average daily high
1.8°C
Average daily low
-8.7°C
Annual rainfall
483mm
Sunshine / day
8.0h
Mean relative humidity
73%
Average peak wind
12.5km/h
Seasonal range
42.4°C
Frost days (< 0 °C)
234 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
128.1 cm
Average feels-like high
-1.6 °C
Average feels-like low
-12.5 °C
Average peak gust
32.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.1 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
34.3 °C
2 July 2024
Coldest day
-57.9 °C
3 January 1951
Wettest day
48 mm
29 June 1948
Windiest day
38.3 km/h
26 September 2013
Strongest gust
96.8 km/h
26 September 2013
Hottest feels-like
36.4 °C
22 July 2002
Coldest feels-like
-62.4 °C
3 January 1951
Snowiest day
10.7 cm
8 April 1968
Sunniest day
17.0 h
16 June 2016
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 | -14.2 °C | +6.6 °C | 20 mm | +5 mm |
| Feb | -14.5 °C | +1.3 °C | 26 mm | +13 mm |
| Mar | -1.9 °C | +3.2 °C | 50 mm | +31 mm |
| Apr | 6.7 °C | +2.8 °C | 61 mm | +30 mm |
| May | 14.8 °C | +2.1 °C | 42 mm | -4 mm |
| Jun | 21.8 °C | +1.3 °C | 108 mm | +42 mm |
| Jul | 22.5 °C | -0.5 °C | 38 mm | -39 mm |
| Aug | 21.4 °C | +1.5 °C | 43 mm | -31 mm |
| Sep | 13.5 °C | +1.7 °C | 80 mm | +29 mm |
| Oct | -1.2 °C | -2.9 °C | 23 mm | -16 mm |
| Nov | -6.2 °C | +4.5 °C | 53 mm | +22 mm |
| Dec | -19.0 °C | +0.2 °C | 28 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 Ust'-Kut?
Ust'-Kut has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is -3.3 °C and it receives 483 mm of precipitation per year.
What is the hottest day ever recorded in Ust'-Kut?
The hottest day measured in Ust'-Kut between 1940 and 2025 was 2 July 2024, reaching 34.3 °C.
What is the coldest day in Ust'-Kut?
The coldest day measured in Ust'-Kut between 1940 and 2025 was 3 January 1951, at -57.9 °C.
Does it snow in Ust'-Kut?
Yes. Ust'-Kut gets on average 128.1 cm of snow per year and has around 234 frost days.
Has the climate of Ust'-Kut warmed?
Yes: Ust'-Kut warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ust'-Kut?
The wettest day measured in Ust'-Kut between 1940 and 2025 was 29 June 1948, with 48 mm of rain in 24 hours.
What was the windiest day in Ust'-Kut?
The windiest day measured in Ust'-Kut between 1940 and 2025 was 26 September 2013, with winds reaching 38.3 km/h.
What is the warmest month in Ust'-Kut?
The warmest month in Ust'-Kut is July (17.5 °C on average); the coldest is January (-24.9 °C).
How much does it rain in Ust'-Kut?
Ust'-Kut receives on average 483 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Ust'-Kut?
Ust'-Kut gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ust'-Kut?
The heaviest 24-hour snowfall measured in Ust'-Kut between 1940 and 2025 was 8 April 1968, with 10.7 cm.
Are there tropical nights in Ust'-Kut?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Ust'-Kut.
What was the most extreme apparent temperature in Ust'-Kut?
In Ust'-Kut, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 22 July 2002, and the lowest was -62.4 °C on 3 January 1951.
Compare Ust'-Kut with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ust'-Kut