Iernut climate — normals and trends
Iernut (Romania) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 709 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 (20.4 °C on average) and the coldest is January (-3.2 °C). Rainfall peaks in June.
Iernut averages 104 frost days, 15 hot days (≥ 30 °C) and 125 rainy days per year.
Iernut 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 119 to 89 per year over the period.
The hottest day of the period reached 39.1 °C (on 25 August 2012) and the coldest -32.9 °C (on 23 January 1963).
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
IernutMureș County
- coords
- 46.45°, 24.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
14.5°C
Average daily low
5.2°C
Annual rainfall
709mm
Sunshine / day
9.1h
Mean relative humidity
75%
Average peak wind
12.4km/h
Seasonal range
23.6°C
Frost days (< 0 °C)
104 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
44.3 cm
Average feels-like high
13.0 °C
Average feels-like low
3.0 °C
Average peak gust
25.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.45 · 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
39.1 °C
25 August 2012
Coldest day
-32.9 °C
23 January 1963
Wettest day
57 mm
17 September 1955
Windiest day
41.0 km/h
3 February 1985
Strongest gust
86.4 km/h
9 April 2011
Hottest feels-like
41.0 °C
6 July 1988
Coldest feels-like
-37.8 °C
23 January 1963
Snowiest day
14.6 cm
19 February 1958
Sunniest day
15.0 h
3 July 1940
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 | 5.5 °C | +5.2 °C | 22 mm | -8 mm |
| Feb | 5.2 °C | +1.7 °C | 14 mm | -17 mm |
| Mar | 14.6 °C | +5.0 °C | 65 mm | +24 mm |
| Apr | 17.6 °C | +1.7 °C | 47 mm | -20 mm |
| May | 18.1 °C | -2.7 °C | 145 mm | +55 mm |
| Jun | 28.4 °C | +4.3 °C | 20 mm | -82 mm |
| Jul | 28.7 °C | +2.7 °C | 131 mm | +37 mm |
| Aug | 28.1 °C | +2.0 °C | 84 mm | +6 mm |
| Sep | 24.0 °C | +2.2 °C | 59 mm | +4 mm |
| Oct | 13.7 °C | -1.9 °C | 78 mm | +34 mm |
| Nov | 11.8 °C | +3.4 °C | 69 mm | +29 mm |
| Dec | 5.5 °C | +3.1 °C | 6 mm | -31 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 Iernut?
Iernut has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 709 mm of precipitation per year.
What is the hottest day ever recorded in Iernut?
The hottest day measured in Iernut between 1940 and 2025 was 25 August 2012, reaching 39.1 °C.
What is the coldest day in Iernut?
The coldest day measured in Iernut between 1940 and 2025 was 23 January 1963, at -32.9 °C.
Does it snow in Iernut?
Yes. Iernut gets on average 44.3 cm of snow per year and has around 104 frost days.
Has the climate of Iernut warmed?
Yes: Iernut warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Iernut?
The wettest day measured in Iernut between 1940 and 2025 was 17 September 1955, with 57 mm of rain in 24 hours.
What was the windiest day in Iernut?
The windiest day measured in Iernut between 1940 and 2025 was 3 February 1985, with winds reaching 41.0 km/h.
What is the warmest month in Iernut?
The warmest month in Iernut is July (20.4 °C on average); the coldest is January (-3.2 °C).
How much does it rain in Iernut?
Iernut receives on average 709 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Iernut?
Iernut gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Iernut?
The heaviest 24-hour snowfall measured in Iernut between 1940 and 2025 was 19 February 1958, with 14.6 cm.
Are there tropical nights in Iernut?
Yes: Iernut has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Iernut?
In Iernut, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 6 July 1988, and the lowest was -37.8 °C on 23 January 1963.
Compare Iernut with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Iernut