Alatri climate — normals and trends
Alatri (Italy) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 1,271 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 (21.5 °C on average) and the coldest is January (3.1 °C). Rainfall peaks in November.
Alatri averages 59 frost days, 14 hot days (≥ 30 °C) and 133 rainy days per year.
Alatri has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 76 to 42 per year over the period.
The hottest day of the period reached 37.4 °C (on 18 July 2023) and the coldest -22.1 °C (on 14 January 1968).
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
AlatriLazio
- coords
- 41.73°, 13.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.0°C
Average daily high
17.0°C
Average daily low
7.2°C
Annual rainfall
1,271mm
Sunshine / day
9.7h
Mean relative humidity
76%
Average peak wind
8.6km/h
Seasonal range
18.4°C
Frost days (< 0 °C)
59 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
31.3 cm
Average feels-like high
16.4 °C
Average feels-like low
5.6 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.48 · 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
37.4 °C
18 July 2023
Coldest day
-22.1 °C
14 January 1968
Wettest day
102 mm
3 September 1959
Windiest day
28.1 km/h
23 February 2019
Strongest gust
128.5 km/h
29 October 2018
Hottest feels-like
39.2 °C
18 July 2023
Coldest feels-like
-27.1 °C
14 January 1968
Snowiest day
25.9 cm
11 March 1956
Sunniest day
14.3 h
30 June 1942
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 | 10.2 °C | +2.5 °C | 82 mm | -24 mm |
| Feb | 11.9 °C | +2.9 °C | 91 mm | -24 mm |
| Mar | 14.4 °C | +2.5 °C | 183 mm | +73 mm |
| Apr | 18.0 °C | +2.8 °C | 141 mm | +20 mm |
| May | 20.8 °C | +1.2 °C | 140 mm | +38 mm |
| Jun | 30.2 °C | +6.4 °C | 22 mm | -49 mm |
| Jul | 29.9 °C | +2.8 °C | 39 mm | -5 mm |
| Aug | 29.0 °C | +1.7 °C | 87 mm | +30 mm |
| Sep | 25.2 °C | +2.2 °C | 149 mm | +46 mm |
| Oct | 18.6 °C | +0.4 °C | 98 mm | -38 mm |
| Nov | 14.1 °C | +1.4 °C | 127 mm | -43 mm |
| Dec | 11.8 °C | +3.0 °C | 48 mm | -91 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 Alatri?
Alatri has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,271 mm of precipitation per year.
What is the hottest day ever recorded in Alatri?
The hottest day measured in Alatri between 1940 and 2025 was 18 July 2023, reaching 37.4 °C.
What is the coldest day in Alatri?
The coldest day measured in Alatri between 1940 and 2025 was 14 January 1968, at -22.1 °C.
Does it snow in Alatri?
Yes. Alatri gets on average 31.3 cm of snow per year and has around 59 frost days.
Has the climate of Alatri warmed?
Yes: Alatri warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alatri?
The wettest day measured in Alatri between 1940 and 2025 was 3 September 1959, with 102 mm of rain in 24 hours.
What was the windiest day in Alatri?
The windiest day measured in Alatri between 1940 and 2025 was 23 February 2019, with winds reaching 28.1 km/h.
What is the warmest month in Alatri?
The warmest month in Alatri is July (21.5 °C on average); the coldest is January (3.1 °C).
How much does it rain in Alatri?
Alatri receives on average 1,271 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Alatri?
Alatri gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in Alatri?
The heaviest 24-hour snowfall measured in Alatri between 1940 and 2025 was 11 March 1956, with 25.9 cm.
Are there tropical nights in Alatri?
Yes: Alatri has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alatri?
In Alatri, between 1940 and 2025, the highest apparent temperature reached 39.2 °C on 18 July 2023, and the lowest was -27.1 °C on 14 January 1968.
Compare Alatri with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alatri