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Built 2026-10-19 (19 October 2026)

Sylvan Loch Threshold Days by Year (ASN00009858)

4 fixed thresholds counted per year at Sylvan Loch (ASN00009858): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sylvan Loch Thresholds

  • Sylvan Loch: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1955 with 32.
  • Sylvan Loch: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1955 with 6.
  • Sylvan Loch: days with 50 mm (1.97 in) or more of precipitation in 7 years, most in 1937 with 2.
  • Sylvan Loch: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1955 with 1.
  • 4 fixed thresholds have at least one qualifying day at Sylvan Loch.
41 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Sylvan Loch Days per year at Sylvan Loch with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1955. 0102030401936: 151937: 191938: 201939: 271940: 81941: 181942: 291943: 261944: 131945: 271946: 261947: 211948: 171949: 211950: 221951: 181952: 151953: 201954: 191955: 321956: 221957: 161958: 231959: 161960: 191961: 231962: 171963: 311964: 251965: 251966: 161967: 221968: 151969: 121970: 221971: 191972: 141973: 161974: 301975: 181976: 16193619411946195119561961196619711976
Days per year at Sylvan Loch with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1955.
Days with 10 mm (0.39 in) or more of precipitation per year at Sylvan Loch
YearDaysDecade average
19361520.3
19371920.3
19382020.3
19392720.3
1940820.6
19411820.6
19422920.6
19432620.6
19441320.6
19452720.6
19462620.6
19472120.6
19481720.6
19492120.6
19502220.3
19511820.3
19521520.3
19532020.3
19541920.3
19553220.3
19562220.3
19571620.3
19582320.3
19591620.3
19601920.5
19612320.5
19621720.5
19633120.5
19642520.5
19652520.5
19661620.5
19672220.5
19681520.5
19691220.5
19702219.3
19711919.3
19721419.3
19731619.3
19743019.3
19751819.3
19761619.3
First to last qualifying date each year at Sylvan Loch For each year, a bar from the first to the last day at Sylvan Loch meeting 10 mm (0.39 in). 1936: 15 April 1936 to 28 December 19361937: 3 March 1937 to 21 October 19371938: 14 March 1938 to 1 November 19381939: 21 January 1939 to 17 November 19391940: 26 June 1940 to 1 December 19401941: 15 April 1941 to 16 November 19411942: 1 March 1942 to 21 October 19421943: 31 January 1943 to 8 December 19431944: 29 April 1944 to 29 August 19441945: 26 March 1945 to 22 September 19451946: 19 April 1946 to 15 November 19461947: 2 May 1947 to 28 October 19471948: 5 June 1948 to 23 December 19481949: 2 February 1949 to 7 November 19491950: 5 May 1950 to 27 December 19501951: 14 February 1951 to 4 December 19511952: 1 May 1952 to 14 October 19521953: 2 February 1953 to 27 October 19531954: 21 January 1954 to 7 November 19541955: 14 February 1955 to 17 October 19551956: 5 March 1956 to 5 December 19561957: 21 January 1957 to 29 August 19571958: 13 February 1958 to 21 December 19581959: 12 April 1959 to 31 December 19591960: 1 January 1960 to 23 September 19601961: 26 January 1961 to 3 September 19611962: 3 January 1962 to 6 December 19621963: 16 March 1963 to 31 October 19631964: 7 June 1964 to 19 December 19641965: 26 March 1965 to 20 December 19651966: 20 April 1966 to 23 October 19661967: 18 February 1967 to 2 September 19671968: 27 January 1968 to 1 December 19681969: 13 March 1969 to 4 November 19691970: 6 February 1970 to 4 November 19701971: 31 January 1971 to 23 November 19711972: 20 April 1972 to 28 October 19721973: 10 April 1973 to 24 September 19731974: 4 April 1974 to 18 November 19741975: 8 March 1975 to 17 November 19751976: 7 January 1976 to 28 November 19761936194219481954196019661972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sylvan Loch meeting 10 mm (0.39 in).
First to last qualifying date each year at Sylvan Loch
YearFirst dateLast date
19361936-04-151936-12-28
19371937-03-031937-10-21
19381938-03-141938-11-01
19391939-01-211939-11-17
19401940-06-261940-12-01
19411941-04-151941-11-16
19421942-03-011942-10-21
19431943-01-311943-12-08
19441944-04-291944-08-29
19451945-03-261945-09-22
19461946-04-191946-11-15
19471947-05-021947-10-28
19481948-06-051948-12-23
19491949-02-021949-11-07
19501950-05-051950-12-27
19511951-02-141951-12-04
19521952-05-011952-10-14
19531953-02-021953-10-27
19541954-01-211954-11-07
19551955-02-141955-10-17
19561956-03-051956-12-05
19571957-01-211957-08-29
19581958-02-131958-12-21
19591959-04-121959-12-31
19601960-01-011960-09-23
19611961-01-261961-09-03
19621962-01-031962-12-06
19631963-03-161963-10-31
19641964-06-071964-12-19
19651965-03-261965-12-20
19661966-04-201966-10-23
19671967-02-181967-09-02
19681968-01-271968-12-01
19691969-03-131969-11-04
19701970-02-061970-11-04
19711971-01-311971-11-23
19721972-04-201972-10-28
19731973-04-101973-09-24
19741974-04-041974-11-18
19751975-03-081975-11-17
19761976-01-071976-11-28

Every Fixed Threshold

Fixed thresholds at Sylvan Loch
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4132195516
25 mm (0.98 in): Days with 25 mm or more rain40619553
50 mm (1.97 in): Days with 50 mm or more rain7219371
100 mm (3.94 in): Days with 100 mm or more rain1119551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.

Download the Data

  • Data for Sylvan Loch 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).