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Built 2026-10-19 (19 October 2026)

Helvecia (Efbm) Threshold Days by Year (BR001739006)

4 fixed thresholds counted per year at Helvecia (Efbm) (BR001739006): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Helvecia (Efbm) Thresholds

  • Helvecia (Efbm): days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1947 with 85.
  • Helvecia (Efbm): days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1992 with 27.
  • Helvecia (Efbm): days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1984 with 12.
  • Helvecia (Efbm): days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1985 with 3.
  • 4 fixed thresholds have at least one qualifying day at Helvecia (Efbm).
43 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Helvecia (Efbm) Days per year at Helvecia (Efbm) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 85 in 1947. 02550751001942: 641943: 421944: 441945: 721947: 851948: 721949: 821950: 541953: 621954: 351955: 461958: 451959: 471960: 551962: 391964: 531967: 481968: 441969: 481971: 571973: 401974: 431975: 461976: 411977: 541978: 401979: 431980: 421981: 421982: 251984: 521985: 541986: 331987: 301989: 391990: 481992: 721993: 421996: 331997: 271998: 391999: 432000: 54194219481955196419731978198419901998
Days per year at Helvecia (Efbm) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 85 in 1947.
Days with 10 mm (0.39 in) or more of precipitation per year at Helvecia (Efbm)
YearDaysDecade average
19426465.9
19434265.9
19444465.9
19457265.9
19478565.9
19487265.9
19498265.9
19505448.2
19536248.2
19543548.2
19554648.2
19584548.2
19594748.2
19605547.8
19623947.8
19645347.8
19674847.8
19684447.8
19694847.8
19715745.5
19734045.5
19744345.5
19754645.5
19764145.5
19775445.5
19784045.5
19794345.5
19804239.6
19814239.6
19822539.6
19845239.6
19855439.6
19863339.6
19873039.6
19893939.6
19904843.4
19927243.4
19934243.4
19963343.4
19972743.4
19983943.4
19994343.4
20005454
First to last qualifying date each year at Helvecia (Efbm) For each year, a bar from the first to the last day at Helvecia (Efbm) meeting 10 mm (0.39 in). 1942: 3 January 1942 to 28 December 19421943: 11 January 1943 to 20 December 19431944: 19 January 1944 to 30 December 19441945: 3 January 1945 to 26 December 19451947: 24 January 1947 to 18 December 19471948: 6 January 1948 to 31 December 19481949: 1 January 1949 to 31 December 19491950: 13 January 1950 to 25 December 19501953: 4 January 1953 to 27 December 19531954: 6 February 1954 to 11 December 19541955: 2 January 1955 to 28 December 19551958: 7 January 1958 to 29 December 19581959: 1 January 1959 to 31 December 19591960: 1 January 1960 to 5 December 19601962: 1 January 1962 to 26 December 19621964: 12 January 1964 to 31 December 19641967: 18 January 1967 to 30 December 19671968: 10 January 1968 to 16 December 19681969: 15 January 1969 to 31 December 19691971: 7 January 1971 to 20 December 19711973: 16 January 1973 to 29 December 19731974: 3 January 1974 to 28 December 19741975: 4 January 1975 to 16 December 19751976: 16 February 1976 to 10 December 19761977: 11 January 1977 to 30 December 19771978: 12 January 1978 to 21 December 19781979: 7 January 1979 to 27 November 19791980: 3 January 1980 to 30 November 19801981: 24 January 1981 to 29 November 19811982: 6 January 1982 to 31 December 19821984: 1 January 1984 to 30 December 19841985: 3 January 1985 to 31 December 19851986: 3 January 1986 to 28 December 19861987: 19 January 1987 to 25 December 19871989: 26 January 1989 to 27 December 19891990: 16 February 1990 to 30 December 19901992: 4 January 1992 to 28 December 19921993: 19 January 1993 to 23 December 19931996: 15 February 1996 to 30 December 19961997: 2 January 1997 to 19 December 19971998: 11 January 1998 to 19 December 19981999: 4 January 1999 to 23 December 19992000: 8 January 2000 to 31 December 200019421949195919691977198419922000JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Helvecia (Efbm) meeting 10 mm (0.39 in).
First to last qualifying date each year at Helvecia (Efbm)
YearFirst dateLast date
19421942-01-031942-12-28
19431943-01-111943-12-20
19441944-01-191944-12-30
19451945-01-031945-12-26
19471947-01-241947-12-18
19481948-01-061948-12-31
19491949-01-011949-12-31
19501950-01-131950-12-25
19531953-01-041953-12-27
19541954-02-061954-12-11
19551955-01-021955-12-28
19581958-01-071958-12-29
19591959-01-011959-12-31
19601960-01-011960-12-05
19621962-01-011962-12-26
19641964-01-121964-12-31
19671967-01-181967-12-30
19681968-01-101968-12-16
19691969-01-151969-12-31
19711971-01-071971-12-20
19731973-01-161973-12-29
19741974-01-031974-12-28
19751975-01-041975-12-16
19761976-02-161976-12-10
19771977-01-111977-12-30
19781978-01-121978-12-21
19791979-01-071979-11-27
19801980-01-031980-11-30
19811981-01-241981-11-29
19821982-01-061982-12-31
19841984-01-011984-12-30
19851985-01-031985-12-31
19861986-01-031986-12-28
19871987-01-191987-12-25
19891989-01-261989-12-27
19901990-02-161990-12-30
19921992-01-041992-12-28
19931993-01-191993-12-23
19961996-02-151996-12-30
19971997-01-021997-12-19
19981998-01-111998-12-19
19991999-01-041999-12-23
20002000-01-082000-12-31

Every Fixed Threshold

Fixed thresholds at Helvecia (Efbm)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4385194754
25 mm (0.98 in): Days with 25 mm or more rain4327199219
50 mm (1.97 in): Days with 50 mm or more rain421219845
100 mm (3.94 in): Days with 100 mm or more rain9319851

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Helvecia (Efbm) 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).