Iesi climate — normals and trends
Iesi (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.3 °C and it receives 747 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 (24.3 °C on average) and the coldest is January (5.2 °C). Rainfall peaks in November.
Iesi averages 21 frost days, 33 hot days (≥ 30 °C) and 114 rainy days per year.
Iesi has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 32 to 10 per year over the period.
The hottest day of the period reached 39.9 °C (on 4 August 2017) and the coldest -15.0 °C (on 15 February 1940).
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
IesiThe Marches
- coords
- 43.52°, 13.24°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.3°C
Average daily high
18.6°C
Average daily low
10.3°C
Annual rainfall
747mm
Sunshine / day
9.8h
Mean relative humidity
73%
Average peak wind
13.9km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
21 d/yr
Hot days (≥ 30 °C)
33 d/yr
Rainy days (≥ 1 mm)
114 d/yr
Annual snowfall
21.3 cm
Average feels-like high
17.9 °C
Average feels-like low
8.9 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
28 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.58 · 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
39.9 °C
4 August 2017
Coldest day
-15.0 °C
15 February 1940
Wettest day
69 mm
27 September 1973
Windiest day
48.5 km/h
27 February 1990
Strongest gust
103.7 km/h
27 February 1990
Hottest feels-like
43.1 °C
4 August 2017
Coldest feels-like
-20.6 °C
15 February 1940
Snowiest day
23.1 cm
31 December 1943
Sunniest day
14.5 h
30 June 2025
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 | 11.7 °C | +2.9 °C | 29 mm | -29 mm |
| Feb | 11.1 °C | +1.0 °C | 66 mm | +8 mm |
| Mar | 14.7 °C | +1.4 °C | 123 mm | +54 mm |
| Apr | 18.4 °C | +1.6 °C | 57 mm | -12 mm |
| May | 22.4 °C | +0.8 °C | 64 mm | -5 mm |
| Jun | 30.8 °C | +4.6 °C | 20 mm | -35 mm |
| Jul | 30.5 °C | +1.3 °C | 80 mm | +39 mm |
| Aug | 29.4 °C | +0.4 °C | 35 mm | -16 mm |
| Sep | 26.4 °C | +1.6 °C | 58 mm | -8 mm |
| Oct | 19.8 °C | +0.2 °C | 48 mm | -19 mm |
| Nov | 15.1 °C | +1.0 °C | 98 mm | +22 mm |
| Dec | 11.5 °C | +1.4 °C | 34 mm | -36 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 Iesi?
Iesi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.3 °C and it receives 747 mm of precipitation per year.
What is the hottest day ever recorded in Iesi?
The hottest day measured in Iesi between 1940 and 2025 was 4 August 2017, reaching 39.9 °C.
What is the coldest day in Iesi?
The coldest day measured in Iesi between 1940 and 2025 was 15 February 1940, at -15.0 °C.
Does it snow in Iesi?
Yes. Iesi gets on average 21.3 cm of snow per year and has around 21 frost days.
Has the climate of Iesi warmed?
Yes: Iesi warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Iesi?
The wettest day measured in Iesi between 1940 and 2025 was 27 September 1973, with 69 mm of rain in 24 hours.
What was the windiest day in Iesi?
The windiest day measured in Iesi between 1940 and 2025 was 27 February 1990, with winds reaching 48.5 km/h.
What is the warmest month in Iesi?
The warmest month in Iesi is July (24.3 °C on average); the coldest is January (5.2 °C).
How much does it rain in Iesi?
Iesi receives on average 747 mm of precipitation per year, spread over about 114 rainy days.
Is it sunny in Iesi?
Iesi gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Iesi?
The heaviest 24-hour snowfall measured in Iesi between 1940 and 2025 was 31 December 1943, with 23.1 cm.
Are there tropical nights in Iesi?
Yes: Iesi has on average 28 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Iesi?
In Iesi, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 4 August 2017, and the lowest was -20.6 °C on 15 February 1940.
Compare Iesi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Iesi