Romny climate — normals and trends
Romny (Ukraine) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.3 °C and it receives 595 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 (20.0 °C on average) and the coldest is January (-6.2 °C). Rainfall peaks in July.
Romny averages 130 frost days, 9 hot days (≥ 30 °C) and 116 rainy days per year.
Romny 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 150 to 110 per year over the period.
The hottest day of the period reached 39.0 °C (on 8 August 2010) and the coldest -37.4 °C (on 22 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
RomnySumy
- coords
- 50.74°, 33.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.3°C
Average daily high
11.1°C
Average daily low
3.5°C
Annual rainfall
595mm
Sunshine / day
7.4h
Mean relative humidity
76%
Average peak wind
19.0km/h
Seasonal range
26.2°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
116 d/yr
Annual snowfall
92.9 cm
Average feels-like high
8.2 °C
Average feels-like low
0.1 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
11.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.49 · 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
39.0 °C
8 August 2010
Coldest day
-37.4 °C
22 January 1942
Wettest day
62 mm
26 June 2015
Windiest day
51.5 km/h
18 January 1970
Strongest gust
92.5 km/h
6 January 1985
Hottest feels-like
38.9 °C
17 July 2024
Coldest feels-like
-43.5 °C
22 January 1942
Snowiest day
21.0 cm
23 March 2013
Sunniest day
15.9 h
2 July 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 | 3.4 °C | +7.1 °C | 19 mm | -21 mm |
| Feb | -1.9 °C | +0.7 °C | 11 mm | -25 mm |
| Mar | 10.8 °C | +7.9 °C | 32 mm | -7 mm |
| Apr | 15.6 °C | +2.9 °C | 39 mm | -8 mm |
| May | 19.0 °C | -0.5 °C | 47 mm | -8 mm |
| Jun | 22.8 °C | -0.3 °C | 65 mm | -3 mm |
| Jul | 27.6 °C | +2.8 °C | 47 mm | -26 mm |
| Aug | 25.4 °C | +1.0 °C | 39 mm | -14 mm |
| Sep | 21.4 °C | +2.6 °C | 20 mm | -29 mm |
| Oct | 11.3 °C | +0.1 °C | 84 mm | +40 mm |
| Nov | 8.5 °C | +5.1 °C | 41 mm | -5 mm |
| Dec | 1.4 °C | +2.7 °C | 38 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 Romny?
Romny has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.3 °C and it receives 595 mm of precipitation per year.
What is the hottest day ever recorded in Romny?
The hottest day measured in Romny between 1940 and 2025 was 8 August 2010, reaching 39.0 °C.
What is the coldest day in Romny?
The coldest day measured in Romny between 1940 and 2025 was 22 January 1942, at -37.4 °C.
Does it snow in Romny?
Yes. Romny gets on average 92.9 cm of snow per year and has around 130 frost days.
Has the climate of Romny warmed?
Yes: Romny warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Romny?
The wettest day measured in Romny between 1940 and 2025 was 26 June 2015, with 62 mm of rain in 24 hours.
What was the windiest day in Romny?
The windiest day measured in Romny between 1940 and 2025 was 18 January 1970, with winds reaching 51.5 km/h.
What is the warmest month in Romny?
The warmest month in Romny is July (20.0 °C on average); the coldest is January (-6.2 °C).
How much does it rain in Romny?
Romny receives on average 595 mm of precipitation per year, spread over about 116 rainy days.
Is it sunny in Romny?
Romny gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Romny?
The heaviest 24-hour snowfall measured in Romny between 1940 and 2025 was 23 March 2013, with 21.0 cm.
Are there tropical nights in Romny?
Yes: Romny has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Romny?
In Romny, between 1940 and 2025, the highest apparent temperature reached 38.9 °C on 17 July 2024, and the lowest was -43.5 °C on 22 January 1942.
Compare Romny with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Romny