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Built 2026-10-19 (19 October 2026)

St.Clair Threshold Days by Year (ASN00061115)

4 fixed thresholds counted per year at St.Clair (ASN00061115): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St.Clair Thresholds

  • St.Clair: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1916 with 35.
  • St.Clair: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1913 with 13.
  • St.Clair: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1942 with 6.
  • St.Clair: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1903 with 1.
  • 4 fixed thresholds have at least one qualifying day at St.Clair.
36 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at St.Clair Days per year at St.Clair with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1916. 0102030401896: 311897: 301898: 281899: 291900: 251901: 181902: 151903: 321904: 231905: 171906: 221907: 181908: 271909: 261910: 301911: 291912: 321913: 291914: 341915: 181916: 351917: 341918: 181936: 211937: 241938: 181939: 221940: 161941: 161942: 261943: 311944: 131945: 281946: 191947: 301948: 24189619001904190819121916193719411945
Days per year at St.Clair with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1916.
Days with 10 mm (0.39 in) or more of precipitation per year at St.Clair
YearDaysDecade average
18963129.5
18973029.5
18982829.5
18992929.5
19002522.3
19011822.3
19021522.3
19033222.3
19042322.3
19051722.3
19062222.3
19071822.3
19082722.3
19092622.3
19103028.8
19112928.8
19123228.8
19132928.8
19143428.8
19151828.8
19163528.8
19173428.8
19181828.8
19362121.3
19372421.3
19381821.3
19392221.3
19401622.6
19411622.6
19422622.6
19433122.6
19441322.6
19452822.6
19461922.6
19473022.6
19482422.6
First to last qualifying date each year at St.Clair For each year, a bar from the first to the last day at St.Clair meeting 10 mm (0.39 in). 1896: 25 January 1896 to 14 December 18961897: 10 January 1897 to 21 December 18971898: 12 January 1898 to 25 December 18981899: 19 January 1899 to 10 December 18991900: 8 January 1900 to 23 December 19001901: 1 January 1901 to 6 December 19011902: 27 January 1902 to 17 December 19021903: 24 March 1903 to 21 December 19031904: 26 January 1904 to 12 December 19041905: 4 January 1905 to 1 December 19051906: 13 January 1906 to 25 December 19061907: 15 January 1907 to 19 December 19071908: 31 January 1908 to 12 December 19081909: 21 January 1909 to 26 December 19091910: 12 January 1910 to 18 December 19101911: 11 January 1911 to 3 December 19111912: 1 January 1912 to 15 December 19121913: 9 February 1913 to 19 December 19131914: 20 January 1914 to 31 December 19141915: 1 January 1915 to 18 December 19151916: 21 January 1916 to 21 December 19161917: 3 January 1917 to 12 December 19171918: 1 January 1918 to 27 November 19181936: 6 January 1936 to 27 December 19361937: 2 January 1937 to 29 December 19371938: 20 January 1938 to 31 December 19381939: 18 January 1939 to 23 December 19391940: 16 January 1940 to 21 December 19401941: 3 January 1941 to 2 December 19411942: 2 February 1942 to 16 November 19421943: 4 January 1943 to 29 December 19431944: 13 January 1944 to 24 August 19441945: 17 January 1945 to 28 December 19451946: 19 January 1946 to 15 December 19461947: 7 January 1947 to 25 December 19471948: 1 January 1948 to 31 December 194818961901190619111916193819431948JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St.Clair meeting 10 mm (0.39 in).
First to last qualifying date each year at St.Clair
YearFirst dateLast date
18961896-01-251896-12-14
18971897-01-101897-12-21
18981898-01-121898-12-25
18991899-01-191899-12-10
19001900-01-081900-12-23
19011901-01-011901-12-06
19021902-01-271902-12-17
19031903-03-241903-12-21
19041904-01-261904-12-12
19051905-01-041905-12-01
19061906-01-131906-12-25
19071907-01-151907-12-19
19081908-01-311908-12-12
19091909-01-211909-12-26
19101910-01-121910-12-18
19111911-01-111911-12-03
19121912-01-011912-12-15
19131913-02-091913-12-19
19141914-01-201914-12-31
19151915-01-011915-12-18
19161916-01-211916-12-21
19171917-01-031917-12-12
19181918-01-011918-11-27
19361936-01-061936-12-27
19371937-01-021937-12-29
19381938-01-201938-12-31
19391939-01-181939-12-23
19401940-01-161940-12-21
19411941-01-031941-12-02
19421942-02-021942-11-16
19431943-01-041943-12-29
19441944-01-131944-08-24
19451945-01-171945-12-28
19461946-01-191946-12-15
19471947-01-071947-12-25
19481948-01-011948-12-31

Every Fixed Threshold

Fixed thresholds at St.Clair
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3635191624
25 mm (0.98 in): Days with 25 mm or more rain361319137
50 mm (1.97 in): Days with 50 mm or more rain27619422
100 mm (3.94 in): Days with 100 mm or more rain5119031

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

  • Data for St.Clair 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).