Built 2026-10-19 (19 October 2026)

Roma Ciampino Threshold Days by Year (IT000016239)

14 fixed thresholds counted per year at Roma Ciampino (IT000016239): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roma Ciampino Thresholds

  • Roma Ciampino: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1996 with 39.
  • Roma Ciampino: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1976 with 14.
  • Roma Ciampino: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1981 with 43.
  • Roma Ciampino: nights with a minimum temperature at or above 20 C (68 F) in 59 years, most in 1994 with 54.
  • 14 fixed thresholds have at least one qualifying day at Roma Ciampino.
49 years with a qualifying day
Days at or above 30 C (86 F) per year at Roma Ciampino Days per year at Roma Ciampino with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 1962. 0204060801951: 521952: 651953: 381954: 411955: 491956: 561957: 401958: 511959: 521960: 531961: 651962: 701963: 591964: 561965: 481966: 581967: 621968: 231969: 321970: 491971: 561972: 181973: 661974: 401975: 531976: 201977: 281978: 331979: 441980: 331981: 391982: 641983: 351984: 241985: 561986: 371987: 631988: 511989: 361990: 461991: 571992: 421993: 551994: 701995: 401996: 371997: 481998: 572025: 621951195619611966197119761981198619911996
Days per year at Roma Ciampino with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 1962.
Days at or above 30 C (86 F) per year at Roma Ciampino
YearDaysDecade average
19515249.3
19526549.3
19533849.3
19544149.3
19554949.3
19565649.3
19574049.3
19585149.3
19595249.3
19605352.6
19616552.6
19627052.6
19635952.6
19645652.6
19654852.6
19665852.6
19676252.6
19682352.6
19693252.6
19704940.7
19715640.7
19721840.7
19736640.7
19744040.7
19755340.7
19762040.7
19772840.7
19783340.7
19794440.7
19803343.8
19813943.8
19826443.8
19833543.8
19842443.8
19855643.8
19863743.8
19876343.8
19885143.8
19893643.8
19904650.2
19915750.2
19924250.2
19935550.2
19947050.2
19954050.2
19963750.2
19974850.2
19985750.2
20256262
First to last qualifying date each year at Roma Ciampino For each year, a bar from the first to the last day at Roma Ciampino meeting 30 C (86 F). 1951: 15 June 1951 to 15 September 19511952: 8 May 1952 to 2 September 19521953: 26 May 1953 to 27 September 19531954: 22 June 1954 to 15 September 19541955: 5 June 1955 to 5 September 19551956: 22 June 1956 to 14 September 19561957: 10 June 1957 to 9 September 19571958: 13 May 1958 to 10 October 19581959: 7 June 1959 to 28 August 19591960: 15 May 1960 to 16 September 19601961: 19 June 1961 to 24 September 19611962: 31 May 1962 to 15 September 19621963: 22 June 1963 to 16 September 19631964: 4 June 1964 to 16 September 19641965: 20 June 1965 to 21 August 19651966: 9 June 1966 to 6 October 19661967: 24 June 1967 to 3 September 19671968: 11 May 1968 to 29 August 19681969: 28 May 1969 to 2 September 19691970: 6 June 1970 to 22 September 19701971: 19 May 1971 to 7 September 19711972: 6 June 1972 to 15 August 19721973: 5 May 1973 to 24 September 19731974: 26 June 1974 to 13 September 19741975: 23 June 1975 to 19 September 19751976: 21 June 1976 to 29 August 19761977: 23 May 1977 to 29 August 19771978: 9 June 1978 to 26 August 19781979: 30 May 1979 to 17 August 19791980: 14 June 1980 to 24 August 19801981: 1 June 1981 to 22 September 19811982: 3 June 1982 to 18 September 19821983: 14 May 1983 to 21 August 19831984: 20 May 1984 to 3 September 19841985: 6 June 1985 to 24 September 19851986: 25 May 1986 to 19 September 19861987: 12 June 1987 to 26 September 19871988: 1 July 1988 to 7 September 19881989: 6 July 1989 to 27 August 19891990: 23 May 1990 to 31 August 19901991: 16 June 1991 to 30 August 19911992: 2 June 1992 to 29 August 19921993: 27 May 1993 to 21 September 19931994: 23 June 1994 to 26 September 19941995: 26 June 1995 to 16 August 19951996: 8 June 1996 to 21 August 19961997: 11 June 1997 to 9 September 19971998: 3 June 1998 to 9 September 19982025: 29 May 2025 to 23 August 20251951195819651972197919861993JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Roma Ciampino meeting 30 C (86 F).
First to last qualifying date each year at Roma Ciampino
YearFirst dateLast date
19511951-06-151951-09-15
19521952-05-081952-09-02
19531953-05-261953-09-27
19541954-06-221954-09-15
19551955-06-051955-09-05
19561956-06-221956-09-14
19571957-06-101957-09-09
19581958-05-131958-10-10
19591959-06-071959-08-28
19601960-05-151960-09-16
19611961-06-191961-09-24
19621962-05-311962-09-15
19631963-06-221963-09-16
19641964-06-041964-09-16
19651965-06-201965-08-21
19661966-06-091966-10-06
19671967-06-241967-09-03
19681968-05-111968-08-29
19691969-05-281969-09-02
19701970-06-061970-09-22
19711971-05-191971-09-07
19721972-06-061972-08-15
19731973-05-051973-09-24
19741974-06-261974-09-13
19751975-06-231975-09-19
19761976-06-211976-08-29
19771977-05-231977-08-29
19781978-06-091978-08-26
19791979-05-301979-08-17
19801980-06-141980-08-24
19811981-06-011981-09-22
19821982-06-031982-09-18
19831983-05-141983-08-21
19841984-05-201984-09-03
19851985-06-061985-09-24
19861986-05-251986-09-19
19871987-06-121987-09-26
19881988-07-011988-09-07
19891989-07-061989-08-27
19901990-05-231990-08-31
19911991-06-161991-08-30
19921992-06-021992-08-29
19931993-05-271993-09-21
19941994-06-231994-09-26
19951995-06-261995-08-16
19961996-06-081996-08-21
19971997-06-111997-09-09
19981998-06-031998-09-09
20252025-05-292025-08-23

Every Fixed Threshold

Fixed thresholds at Roma Ciampino
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4970196262
35 C (95 F): Days3910197418
40 C (104 F): Days1119811
90 F (32.2 C): Days4936196741
100 F (37.8 C): Days9319831
0 C (32 F): Ice days (max1419854
0 C (32 F): Frost days (min594319811
-10 C (14 F): Days with min1119851
20 C (68 F): Tropical nights (min5954199430
25 C (77 F): Days with min4119571
10 mm (0.39 in): Days with 10 mm or more rain6339199611
25 mm (0.98 in): Days with 25 mm or more rain621419761
50 mm (1.97 in): Days with 50 mm or more rain31419901
100 mm (3.94 in): Days with 100 mm or more rain2119511

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Roma Ciampino threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).