Rome climate — normals and trends
Rome (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 1,229 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 (26.0 °C on average) and the coldest is January (5.5 °C). Rainfall peaks in March.
Rome averages 44 frost days, 75 hot days (≥ 30 °C) and 127 rainy days per year.
Rome has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 48 to 40 per year over the period.
The hottest day of the period reached 40.5 °C (on 28 July 1952) and the coldest -21.4 °C (on 21 January 1985).
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
RomeGeorgia
- coords
- 34.26°, -85.16°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
21.8°C
Average daily low
11.3°C
Annual rainfall
1,229mm
Sunshine / day
9.1h
Mean relative humidity
71%
Average peak wind
13.5km/h
Seasonal range
20.5°C
Frost days (< 0 °C)
44 d/yr
Hot days (≥ 30 °C)
75 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
6.9 cm
Average feels-like high
21.9 °C
Average feels-like low
10.3 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
81 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °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
40.5 °C
28 July 1952
Coldest day
-21.4 °C
21 January 1985
Wettest day
108 mm
18 January 1987
Windiest day
47.9 km/h
29 October 2020
Strongest gust
121.7 km/h
5 October 1995
Hottest feels-like
44.6 °C
30 June 2012
Coldest feels-like
-27.1 °C
21 January 1985
Snowiest day
34.0 cm
13 March 1993
Sunniest day
13.9 h
25 June 2024
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 | 9.0 °C | -1.6 °C | 66 mm | -59 mm |
| Feb | 16.0 °C | +2.9 °C | 133 mm | +13 mm |
| Mar | 21.1 °C | +3.6 °C | 86 mm | -48 mm |
| Apr | 24.6 °C | +2.3 °C | 147 mm | +37 mm |
| May | 25.3 °C | -1.1 °C | 251 mm | +158 mm |
| Jun | 30.2 °C | +0.1 °C | 105 mm | +20 mm |
| Jul | 32.8 °C | +1.5 °C | 70 mm | -36 mm |
| Aug | 29.6 °C | -1.3 °C | 107 mm | +23 mm |
| Sep | 29.7 °C | +1.7 °C | 36 mm | -50 mm |
| Oct | 23.3 °C | +0.5 °C | 80 mm | +8 mm |
| Nov | 18.9 °C | +2.2 °C | 55 mm | -44 mm |
| Dec | 14.1 °C | +2.1 °C | 46 mm | -69 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 Rome?
Rome has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 1,229 mm of precipitation per year.
What is the hottest day ever recorded in Rome?
The hottest day measured in Rome between 1940 and 2025 was 28 July 1952, reaching 40.5 °C.
What is the coldest day in Rome?
The coldest day measured in Rome between 1940 and 2025 was 21 January 1985, at -21.4 °C.
Does it snow in Rome?
Yes. Rome gets on average 6.9 cm of snow per year and has around 44 frost days.
Has the climate of Rome warmed?
Yes: Rome warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rome?
The wettest day measured in Rome between 1940 and 2025 was 18 January 1987, with 108 mm of rain in 24 hours.
What was the windiest day in Rome?
The windiest day measured in Rome between 1940 and 2025 was 29 October 2020, with winds reaching 47.9 km/h.
What is the warmest month in Rome?
The warmest month in Rome is July (26.0 °C on average); the coldest is January (5.5 °C).
How much does it rain in Rome?
Rome receives on average 1,229 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Rome?
Rome 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 Rome?
The heaviest 24-hour snowfall measured in Rome between 1940 and 2025 was 13 March 1993, with 34.0 cm.
Are there tropical nights in Rome?
Yes: Rome has on average 81 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rome?
In Rome, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 30 June 2012, and the lowest was -27.1 °C on 21 January 1985.
Compare Rome with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rome