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Built 2026-10-19 (19 October 2026)

Heidelberg I Threshold Days by Year (SF004766300)

4 fixed thresholds counted per year at Heidelberg I (SF004766300): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heidelberg I Thresholds

  • Heidelberg I: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1909 with 36.
  • Heidelberg I: days with 25 mm (0.98 in) or more of precipitation in 73 years, most in 1915 with 14.
  • Heidelberg I: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1917 with 5.
  • Heidelberg I: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1909 with 1.
  • 4 fixed thresholds have at least one qualifying day at Heidelberg I.
73 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Heidelberg I Days per year at Heidelberg I with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1909. 0102030401908: 191909: 361910: 211911: 181912: 191913: 211914: 311915: 201916: 241917: 291919: 221920: 281921: 271922: 201923: 181924: 231928: 191929: 361930: 211931: 211932: 161933: 261934: 261937: 161938: 201939: 301940: 231941: 191942: 321943: 251944: 251945: 161946: 241947: 301948: 191949: 251951: 211952: 211954: 241955: 321956: 211957: 241958: 231959: 221960: 251961: 211962: 181963: 261964: 231965: 241966: 211967: 331968: 211969: 311970: 231971: 361972: 151973: 261974: 241975: 291976: 261977: 251978: 311979: 271980: 321981: 291982: 131983: 241984: 191985: 221987: 221988: 191992: 131908191619281938194619561964197219801992
Days per year at Heidelberg I with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1909.
Days with 10 mm (0.39 in) or more of precipitation per year at Heidelberg I
YearDaysDecade average
19081927.5
19093627.5
19102122.8
19111822.8
19121922.8
19132122.8
19143122.8
19152022.8
19162422.8
19172922.8
19192222.8
19202824.4
19212724.4
19222024.4
19231824.4
19242324.4
19281924.4
19293624.4
19302122
19312122
19321622
19332622
19342622
19371622
19382022
19393022
19402323.8
19411923.8
19423223.8
19432523.8
19442523.8
19451623.8
19462423.8
19473023.8
19481923.8
19492523.8
19512123.5
19522123.5
19542423.5
19553223.5
19562123.5
19572423.5
19582323.5
19592223.5
19602524.3
19612124.3
19621824.3
19632624.3
19642324.3
19652424.3
19662124.3
19673324.3
19682124.3
19693124.3
19702326.2
19713626.2
19721526.2
19732626.2
19742426.2
19752926.2
19762626.2
19772526.2
19783126.2
19792726.2
19803222.5
19812922.5
19821322.5
19832422.5
19841922.5
19852222.5
19872222.5
19881922.5
19921313
First to last qualifying date each year at Heidelberg I For each year, a bar from the first to the last day at Heidelberg I meeting 10 mm (0.39 in). 1908: 27 January 1908 to 29 December 19081909: 6 January 1909 to 25 December 19091910: 10 January 1910 to 28 December 19101911: 7 January 1911 to 8 December 19111912: 3 January 1912 to 30 December 19121913: 19 January 1913 to 18 December 19131914: 4 January 1914 to 28 December 19141915: 5 January 1915 to 25 December 19151916: 14 January 1916 to 27 December 19161917: 20 January 1917 to 28 November 19171919: 2 January 1919 to 24 December 19191920: 6 January 1920 to 31 December 19201921: 3 January 1921 to 27 December 19211922: 11 January 1922 to 27 December 19221923: 1 January 1923 to 19 December 19231924: 10 January 1924 to 26 December 19241928: 5 January 1928 to 10 December 19281929: 9 January 1929 to 30 December 19291930: 4 January 1930 to 23 December 19301931: 8 January 1931 to 29 December 19311932: 19 January 1932 to 24 December 19321933: 10 January 1933 to 31 December 19331934: 16 January 1934 to 10 December 19341937: 3 January 1937 to 30 December 19371938: 24 January 1938 to 23 December 19381939: 1 January 1939 to 29 December 19391940: 5 January 1940 to 28 December 19401941: 9 January 1941 to 25 December 19411942: 2 January 1942 to 29 December 19421943: 15 January 1943 to 27 December 19431944: 2 January 1944 to 23 November 19441945: 17 January 1945 to 20 December 19451946: 2 January 1946 to 22 December 19461947: 3 January 1947 to 29 December 19471948: 4 January 1948 to 11 November 19481949: 18 January 1949 to 29 December 19491951: 2 January 1951 to 22 December 19511952: 4 January 1952 to 30 December 19521954: 2 January 1954 to 6 December 19541955: 2 January 1955 to 31 December 19551956: 14 January 1956 to 22 December 19561957: 11 January 1957 to 3 December 19571958: 10 January 1958 to 4 December 19581959: 6 January 1959 to 24 December 19591960: 23 January 1960 to 29 December 19601961: 14 January 1961 to 26 December 19611962: 20 January 1962 to 14 December 19621963: 5 January 1963 to 13 December 19631964: 5 January 1964 to 28 December 19641965: 6 January 1965 to 28 December 19651966: 9 January 1966 to 19 December 19661967: 10 January 1967 to 30 December 19671968: 13 January 1968 to 20 December 19681969: 6 January 1969 to 28 December 19691970: 8 January 1970 to 28 December 19701971: 2 January 1971 to 27 December 19711972: 11 January 1972 to 25 December 19721973: 6 January 1973 to 21 December 19731974: 4 January 1974 to 28 December 19741975: 13 January 1975 to 17 December 19751976: 4 January 1976 to 15 December 19761977: 8 January 1977 to 31 December 19771978: 1 January 1978 to 22 December 19781979: 12 January 1979 to 23 December 19791980: 6 January 1980 to 27 December 19801981: 8 January 1981 to 28 December 19811982: 9 January 1982 to 26 November 19821983: 5 January 1983 to 30 December 19831984: 1 January 1984 to 16 December 19841985: 8 January 1985 to 26 December 19851987: 27 February 1987 to 25 December 19871988: 4 January 1988 to 2 December 19881992: 15 January 1992 to 21 December 199219081919193219441956196619761987JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Heidelberg I meeting 10 mm (0.39 in).
First to last qualifying date each year at Heidelberg I
YearFirst dateLast date
19081908-01-271908-12-29
19091909-01-061909-12-25
19101910-01-101910-12-28
19111911-01-071911-12-08
19121912-01-031912-12-30
19131913-01-191913-12-18
19141914-01-041914-12-28
19151915-01-051915-12-25
19161916-01-141916-12-27
19171917-01-201917-11-28
19191919-01-021919-12-24
19201920-01-061920-12-31
19211921-01-031921-12-27
19221922-01-111922-12-27
19231923-01-011923-12-19
19241924-01-101924-12-26
19281928-01-051928-12-10
19291929-01-091929-12-30
19301930-01-041930-12-23
19311931-01-081931-12-29
19321932-01-191932-12-24
19331933-01-101933-12-31
19341934-01-161934-12-10
19371937-01-031937-12-30
19381938-01-241938-12-23
19391939-01-011939-12-29
19401940-01-051940-12-28
19411941-01-091941-12-25
19421942-01-021942-12-29
19431943-01-151943-12-27
19441944-01-021944-11-23
19451945-01-171945-12-20
19461946-01-021946-12-22
19471947-01-031947-12-29
19481948-01-041948-11-11
19491949-01-181949-12-29
19511951-01-021951-12-22
19521952-01-041952-12-30
19541954-01-021954-12-06
19551955-01-021955-12-31
19561956-01-141956-12-22
19571957-01-111957-12-03
19581958-01-101958-12-04
19591959-01-061959-12-24
19601960-01-231960-12-29
19611961-01-141961-12-26
19621962-01-201962-12-14
19631963-01-051963-12-13
19641964-01-051964-12-28
19651965-01-061965-12-28
19661966-01-091966-12-19
19671967-01-101967-12-30
19681968-01-131968-12-20
19691969-01-061969-12-28
19701970-01-081970-12-28
19711971-01-021971-12-27
19721972-01-111972-12-25
19731973-01-061973-12-21
19741974-01-041974-12-28
19751975-01-131975-12-17
19761976-01-041976-12-15
19771977-01-081977-12-31
19781978-01-011978-12-22
19791979-01-121979-12-23
19801980-01-061980-12-27
19811981-01-081981-12-28
19821982-01-091982-11-26
19831983-01-051983-12-30
19841984-01-011984-12-16
19851985-01-081985-12-26
19871987-02-271987-12-25
19881988-01-041988-12-02
19921992-01-151992-12-21

Every Fixed Threshold

Fixed thresholds at Heidelberg I
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain7336190913
25 mm (0.98 in): Days with 25 mm or more rain731419151
50 mm (1.97 in): Days with 50 mm or more rain53519171
100 mm (3.94 in): Days with 100 mm or more rain4119091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

  • Data for Heidelberg I 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).