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Built 2026-10-18 (18 October 2026)

Heidelberg (Rosanna) Threshold Days by Year

4 fixed thresholds counted per year at Heidelberg (Rosanna) (ASN00086053): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heidelberg (Rosanna) Thresholds

  • Heidelberg (Rosanna): days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 1952 with 30.
  • Heidelberg (Rosanna): days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 1911 with 7.
  • Heidelberg (Rosanna): days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1911 with 3.
  • Heidelberg (Rosanna): days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1946 with 1.
  • 4 fixed thresholds have at least one qualifying day at Heidelberg (Rosanna).
61 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Heidelberg (Rosanna) Days per year at Heidelberg (Rosanna) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1952. 01020301903: 271904: 191905: 251908: 91909: 151910: 161911: 291912: 121913: 91914: 121915: 61916: 191917: 181918: 231919: 141920: 201921: 241922: 231923: 91924: 251925: 101926: 121927: 101928: 151929: 251930: 181931: 241932: 181933: 141934: 211935: 211936: 111937: 111938: 111939: 251940: 111941: 231942: 201943: 121944: 181945: 151946: 171947: 201950: 261951: 211952: 301953: 221954: 221955: 301956: 211957: 151958: 251959: 201960: 271961: 201962: 181963: 241964: 211965: 161966: 211967: 12190319121919192619331940194719561963
Days per year at Heidelberg (Rosanna) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1952.
Days with 10 mm (0.39 in) or more of precipitation per year at Heidelberg (Rosanna)
YearDaysDecade average
19032719
19041919
19052519
1908919
19091519
19101615.8
19112915.8
19121215.8
1913915.8
19141215.8
1915615.8
19161915.8
19171815.8
19182315.8
19191415.8
19202017.3
19212417.3
19222317.3
1923917.3
19242517.3
19251017.3
19261217.3
19271017.3
19281517.3
19292517.3
19301817.4
19312417.4
19321817.4
19331417.4
19342117.4
19352117.4
19361117.4
19371117.4
19381117.4
19392517.4
19401117
19412317
19422017
19431217
19441817
19451517
19461717
19472017
19502623.2
19512123.2
19523023.2
19532223.2
19542223.2
19553023.2
19562123.2
19571523.2
19582523.2
19592023.2
19602719.9
19612019.9
19621819.9
19632419.9
19642119.9
19651619.9
19662119.9
19671219.9
First to last qualifying date each year at Heidelberg (Rosanna) For each year, a bar from the first to the last day at Heidelberg (Rosanna) meeting 10 mm (0.39 in). 1903: 7 January 1903 to 29 December 19031904: 4 January 1904 to 2 November 19041905: 30 January 1905 to 31 December 19051908: 10 January 1908 to 27 November 19081909: 5 January 1909 to 1 December 19091910: 15 January 1910 to 10 December 19101911: 18 January 1911 to 13 December 19111912: 8 February 1912 to 8 December 19121913: 15 February 1913 to 13 November 19131914: 26 January 1914 to 26 December 19141915: 7 January 1915 to 23 October 19151916: 28 January 1916 to 12 December 19161917: 21 February 1917 to 31 December 19171918: 14 January 1918 to 27 December 19181919: 7 January 1919 to 28 December 19191920: 27 January 1920 to 17 December 19201921: 2 January 1921 to 5 December 19211922: 8 January 1922 to 26 December 19221923: 4 June 1923 to 18 November 19231924: 26 January 1924 to 27 December 19241925: 13 January 1925 to 23 November 19251926: 7 January 1926 to 20 December 19261927: 24 February 1927 to 28 December 19271928: 18 January 1928 to 6 November 19281929: 30 January 1929 to 30 December 19291930: 8 February 1930 to 26 December 19301931: 26 January 1931 to 21 November 19311932: 6 February 1932 to 24 December 19321933: 23 January 1933 to 15 December 19331934: 7 January 1934 to 1 December 19341935: 3 January 1935 to 21 December 19351936: 10 January 1936 to 10 December 19361937: 19 January 1937 to 19 October 19371938: 7 January 1938 to 4 November 19381939: 17 February 1939 to 27 November 19391940: 6 January 1940 to 20 December 19401941: 4 January 1941 to 8 December 19411942: 20 January 1942 to 19 December 19421943: 17 January 1943 to 18 November 19431944: 23 January 1944 to 21 December 19441945: 31 January 1945 to 21 November 19451946: 17 January 1946 to 23 December 19461947: 4 February 1947 to 21 December 19471950: 2 February 1950 to 30 December 19501951: 7 January 1951 to 14 December 19511952: 5 January 1952 to 27 December 19521953: 6 January 1953 to 11 December 19531954: 1 February 1954 to 13 December 19541955: 28 January 1955 to 31 December 19551956: 3 January 1956 to 16 November 19561957: 14 March 1957 to 26 December 19571958: 31 January 1958 to 11 December 19581959: 26 January 1959 to 25 December 19591960: 9 January 1960 to 4 December 19601961: 1 January 1961 to 19 December 19611962: 20 January 1962 to 12 December 19621963: 6 January 1963 to 6 December 19631964: 11 February 1964 to 28 December 19641965: 5 April 1965 to 3 December 19651966: 13 January 1966 to 16 December 19661967: 13 January 1967 to 30 December 196719031913192119291937194519551963JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Heidelberg (Rosanna) meeting 10 mm (0.39 in).
First to last qualifying date each year at Heidelberg (Rosanna)
YearFirst dateLast date
19031903-01-071903-12-29
19041904-01-041904-11-02
19051905-01-301905-12-31
19081908-01-101908-11-27
19091909-01-051909-12-01
19101910-01-151910-12-10
19111911-01-181911-12-13
19121912-02-081912-12-08
19131913-02-151913-11-13
19141914-01-261914-12-26
19151915-01-071915-10-23
19161916-01-281916-12-12
19171917-02-211917-12-31
19181918-01-141918-12-27
19191919-01-071919-12-28
19201920-01-271920-12-17
19211921-01-021921-12-05
19221922-01-081922-12-26
19231923-06-041923-11-18
19241924-01-261924-12-27
19251925-01-131925-11-23
19261926-01-071926-12-20
19271927-02-241927-12-28
19281928-01-181928-11-06
19291929-01-301929-12-30
19301930-02-081930-12-26
19311931-01-261931-11-21
19321932-02-061932-12-24
19331933-01-231933-12-15
19341934-01-071934-12-01
19351935-01-031935-12-21
19361936-01-101936-12-10
19371937-01-191937-10-19
19381938-01-071938-11-04
19391939-02-171939-11-27
19401940-01-061940-12-20
19411941-01-041941-12-08
19421942-01-201942-12-19
19431943-01-171943-11-18
19441944-01-231944-12-21
19451945-01-311945-11-21
19461946-01-171946-12-23
19471947-02-041947-12-21
19501950-02-021950-12-30
19511951-01-071951-12-14
19521952-01-051952-12-27
19531953-01-061953-12-11
19541954-02-011954-12-13
19551955-01-281955-12-31
19561956-01-031956-11-16
19571957-03-141957-12-26
19581958-01-311958-12-11
19591959-01-261959-12-25
19601960-01-091960-12-04
19611961-01-011961-12-19
19621962-01-201962-12-12
19631963-01-061963-12-06
19641964-02-111964-12-28
19651965-04-051965-12-03
19661966-01-131966-12-16
19671967-01-131967-12-30

Every Fixed Threshold

Fixed thresholds at Heidelberg (Rosanna)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6130195212
25 mm (0.98 in): Days with 25 mm or more rain59719111
50 mm (1.97 in): Days with 50 mm or more rain22319111
100 mm (3.94 in): Days with 100 mm or more rain3119461

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

  • Data for Heidelberg (Rosanna) 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).