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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Roma Threshold Days by Year (SWE00138124)

3 fixed thresholds counted per year at Roma (SWE00138124): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roma Thresholds

  • Roma: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1960 with 21.
  • Roma: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1983 with 4.
  • Roma: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1962 with 1.
  • 3 fixed thresholds have at least one qualifying day at Roma.
42 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Roma Days per year at Roma with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1960. 01020301945: 111946: 121947: 151948: 131949: 141950: 141951: 91952: 161953: 141954: 71955: 171956: 141957: 161958: 181959: 81960: 211961: 111962: 111963: 151964: 131965: 161966: 151967: 111968: 141969: 81970: 181972: 101973: 151974: 161975: 121976: 131977: 151978: 101979: 141980: 131981: 131982: 101983: 141984: 181988: 201989: 91990: 16194519501955196019651970197619811989
Days per year at Roma with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1960.
Days with 10 mm (0.39 in) or more of precipitation per year at Roma
YearDaysDecade average
19451113
19461213
19471513
19481313
19491413
19501413.3
1951913.3
19521613.3
19531413.3
1954713.3
19551713.3
19561413.3
19571613.3
19581813.3
1959813.3
19602113.5
19611113.5
19621113.5
19631513.5
19641313.5
19651613.5
19661513.5
19671113.5
19681413.5
1969813.5
19701813.7
19721013.7
19731513.7
19741613.7
19751213.7
19761313.7
19771513.7
19781013.7
19791413.7
19801313.9
19811313.9
19821013.9
19831413.9
19841813.9
19882013.9
1989913.9
19901616
First to last qualifying date each year at Roma For each year, a bar from the first to the last day at Roma meeting 10 mm (0.39 in). 1945: 18 January 1945 to 7 November 19451946: 23 March 1946 to 28 October 19461947: 7 March 1947 to 28 December 19471948: 5 January 1948 to 9 November 19481949: 13 March 1949 to 26 December 19491950: 13 April 1950 to 30 December 19501951: 7 January 1951 to 4 December 19511952: 3 January 1952 to 21 December 19521953: 15 January 1953 to 30 September 19531954: 19 January 1954 to 2 November 19541955: 10 January 1955 to 28 December 19551956: 18 January 1956 to 21 December 19561957: 6 January 1957 to 8 December 19571958: 16 February 1958 to 29 December 19581959: 10 January 1959 to 22 October 19591960: 5 January 1960 to 10 December 19601961: 8 January 1961 to 11 November 19611962: 22 January 1962 to 26 October 19621963: 10 January 1963 to 18 December 19631964: 30 January 1964 to 13 December 19641965: 21 January 1965 to 30 December 19651966: 5 February 1966 to 18 December 19661967: 13 January 1967 to 11 November 19671968: 26 January 1968 to 31 December 19681969: 19 May 1969 to 27 September 19691970: 5 March 1970 to 20 November 19701972: 29 January 1972 to 1 December 19721973: 12 February 1973 to 6 December 19731974: 15 January 1974 to 12 December 19741975: 16 March 1975 to 29 November 19751976: 1 January 1976 to 19 December 19761977: 20 February 1977 to 26 December 19771978: 11 January 1978 to 5 October 19781979: 1 January 1979 to 26 November 19791980: 30 January 1980 to 20 December 19801981: 14 January 1981 to 24 December 19811982: 25 January 1982 to 20 December 19821983: 18 January 1983 to 8 December 19831984: 8 January 1984 to 23 November 19841988: 1 January 1988 to 26 December 19881989: 26 February 1989 to 27 November 19891990: 26 January 1990 to 21 December 19901945195119571963196919761982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Roma meeting 10 mm (0.39 in).
First to last qualifying date each year at Roma
YearFirst dateLast date
19451945-01-181945-11-07
19461946-03-231946-10-28
19471947-03-071947-12-28
19481948-01-051948-11-09
19491949-03-131949-12-26
19501950-04-131950-12-30
19511951-01-071951-12-04
19521952-01-031952-12-21
19531953-01-151953-09-30
19541954-01-191954-11-02
19551955-01-101955-12-28
19561956-01-181956-12-21
19571957-01-061957-12-08
19581958-02-161958-12-29
19591959-01-101959-10-22
19601960-01-051960-12-10
19611961-01-081961-11-11
19621962-01-221962-10-26
19631963-01-101963-12-18
19641964-01-301964-12-13
19651965-01-211965-12-30
19661966-02-051966-12-18
19671967-01-131967-11-11
19681968-01-261968-12-31
19691969-05-191969-09-27
19701970-03-051970-11-20
19721972-01-291972-12-01
19731973-02-121973-12-06
19741974-01-151974-12-12
19751975-03-161975-11-29
19761976-01-011976-12-19
19771977-02-201977-12-26
19781978-01-111978-10-05
19791979-01-011979-11-26
19801980-01-301980-12-20
19811981-01-141981-12-24
19821982-01-251982-12-20
19831983-01-181983-12-08
19841984-01-081984-11-23
19881988-01-011988-12-26
19891989-02-261989-11-27
19901990-01-261990-12-21

Every Fixed Threshold

Fixed thresholds at Roma
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4221196016
25 mm (0.98 in): Days with 25 mm or more rain33419831
50 mm (1.97 in): Days with 50 mm or more rain2119621

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

  • Data for Roma 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).