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Has the climate in Velletri changed?

Velletri has warmed about 4.3°F between 1971 and 2024.

About 0.8°F per decade, measured from Velletri's official daily weather records, 1971–2024. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Velletri's warming is broadly in line with other cities in Italy — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
14 fewer nights
1970s
22 / yr
Recent
8 / yr
Milder winters — fewer frosts
Average temperature
+2.9°F
1970s
58.7°F
Recent
61.6°F
A steady upward drift
Hot days above 90°F
14 more days
1970s
21 / yr
Recent
35 / yr
More days of serious heat
Rainy days
50 fewer days
1970s
117 / yr
Recent
67 / yr
Drier on average

Velletri's temperature, year by year

Average temperature for each year from 1971 to 2024.

56°58°60°62°64°1971: 58.9°F1972: 59.1°F1973: 59.1°F1974: 58.8°F1975: 59.1°F1976: 58.5°F1977: 59.4°F1978: 57.7°F1979: 58.7°F1980: 57.3°F1981: 58.0°F1982: 59.5°F1983: 58.3°F1984: 57.4°F1985: 59.5°F1986: 59.0°F1987: 59.4°F1988: 59.4°F1989: 58.9°F1990: 59.7°F1991: 58.2°F1992: 59.8°F1993: 59.5°F1994: 61.5°F1995: 59.1°F1996: 59.2°F1997: 59.9°F1998: 59.6°F1999: 59.8°F2000: 60.2°F2001: 61.0°F2002: 61.0°F2003: 62.1°F2004: 59.8°F2005: 59.1°F2006: 60.6°F2007: 60.5°F2008: 60.8°F2009: 61.4°F2010: 60.0°F2011: 60.9°F2012: 61.3°F2013: 60.5°F2014: 61.3°F2015: 61.6°F2016: 61.7°F2017: 61.4°F2018: 62.1°F2019: 61.6°F2020: 62.1°F2021: 61.8°F2022: 63.2°F2023: 63.1°F2024: 63.6°Flong-term trend1971198019902000201020202024
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 7 fewer freezing nights a year and about 6 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-0.5°0.0°+0.5°+1.0°+1.5°+2.0°+2.5°January: +0.4°F+0.4JFebruary: -0.2°F-0.2FMarch: +1.4°F+1.4MApril: +2.1°F+2.1AMay: +1.8°F+1.8MJune: +2.5°F+2.5JJuly: +2.0°F+2.0JAugust: +2.4°F+2.4ASeptember: +1.3°F+1.3SOctober: +1.8°F+1.8ONovember: +2.1°F+2.1NDecember: +0.4°F+0.4D

June has warmed the most — about 2.5°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Latina, about 19 km from the city centre.

How we build these numbers →