Built 2026-10-19 (19 October 2026)

Hornsby Junction (Thornleigh) Threshold Days by Year (ASN00066107)

4 fixed thresholds counted per year at Hornsby Junction (Thornleigh) (ASN00066107): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hornsby Junction (Thornleigh) Thresholds

  • Hornsby Junction (Thornleigh): days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1899 with 41.
  • Hornsby Junction (Thornleigh): days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1911 with 20.
  • Hornsby Junction (Thornleigh): days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1913 with 14.
  • Hornsby Junction (Thornleigh): days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 1904 with 3.
  • 4 fixed thresholds have at least one qualifying day at Hornsby Junction (Thornleigh).
32 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hornsby Junction (Thornleigh) Days per year at Hornsby Junction (Thornleigh) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1899. 02040601891: 391893: 311894: 281895: 221896: 291897: 301898: 251899: 411900: 381901: 241902: 251903: 381904: 301905: 231906: 231907: 281908: 301909: 241910: 271911: 341912: 361913: 361914: 321915: 231916: 371917: 351918: 201919: 331920: 301921: 351922: 261925: 2818911896190019041908191219161920
Days per year at Hornsby Junction (Thornleigh) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1899.
Days with 10 mm (0.39 in) or more of precipitation per year at Hornsby Junction (Thornleigh)
YearDaysDecade average
18913930.6
18933130.6
18942830.6
18952230.6
18962930.6
18973030.6
18982530.6
18994130.6
19003828.3
19012428.3
19022528.3
19033828.3
19043028.3
19052328.3
19062328.3
19072828.3
19083028.3
19092428.3
19102731.3
19113431.3
19123631.3
19133631.3
19143231.3
19152331.3
19163731.3
19173531.3
19182031.3
19193331.3
19203029.8
19213529.8
19222629.8
19252829.8
First to last qualifying date each year at Hornsby Junction (Thornleigh) For each year, a bar from the first to the last day at Hornsby Junction (Thornleigh) meeting 10 mm (0.39 in). 1891: 10 January 1891 to 28 November 18911893: 1 January 1893 to 14 November 18931894: 14 January 1894 to 30 December 18941895: 2 January 1895 to 30 December 18951896: 20 January 1896 to 7 December 18961897: 10 January 1897 to 20 December 18971898: 16 January 1898 to 25 December 18981899: 19 January 1899 to 18 November 18991900: 11 January 1900 to 25 December 19001901: 11 January 1901 to 6 November 19011902: 6 April 1902 to 18 December 19021903: 5 January 1903 to 12 December 19031904: 3 January 1904 to 19 December 19041905: 31 January 1905 to 28 December 19051906: 1 January 1906 to 24 December 19061907: 15 January 1907 to 28 December 19071908: 26 January 1908 to 3 December 19081909: 18 January 1909 to 24 December 19091910: 12 January 1910 to 19 December 19101911: 12 January 1911 to 31 December 19111912: 5 January 1912 to 13 December 19121913: 6 February 1913 to 23 September 19131914: 20 January 1914 to 23 December 19141915: 1 February 1915 to 18 December 19151916: 21 January 1916 to 27 December 19161917: 2 January 1917 to 13 December 19171918: 8 January 1918 to 14 November 19181919: 14 January 1919 to 30 December 19191920: 4 January 1920 to 13 December 19201921: 4 January 1921 to 31 December 19211922: 2 January 1922 to 11 December 19221925: 16 January 1925 to 31 December 192518911896190019041908191219161920JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hornsby Junction (Thornleigh) meeting 10 mm (0.39 in).
First to last qualifying date each year at Hornsby Junction (Thornleigh)
YearFirst dateLast date
18911891-01-101891-11-28
18931893-01-011893-11-14
18941894-01-141894-12-30
18951895-01-021895-12-30
18961896-01-201896-12-07
18971897-01-101897-12-20
18981898-01-161898-12-25
18991899-01-191899-11-18
19001900-01-111900-12-25
19011901-01-111901-11-06
19021902-04-061902-12-18
19031903-01-051903-12-12
19041904-01-031904-12-19
19051905-01-311905-12-28
19061906-01-011906-12-24
19071907-01-151907-12-28
19081908-01-261908-12-03
19091909-01-181909-12-24
19101910-01-121910-12-19
19111911-01-121911-12-31
19121912-01-051912-12-13
19131913-02-061913-09-23
19141914-01-201914-12-23
19151915-02-011915-12-18
19161916-01-211916-12-27
19171917-01-021917-12-13
19181918-01-081918-11-14
19191919-01-141919-12-30
19201920-01-041920-12-13
19211921-01-041921-12-31
19221922-01-021922-12-11
19251925-01-161925-12-31

Every Fixed Threshold

Fixed thresholds at Hornsby Junction (Thornleigh)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3241189928
25 mm (0.98 in): Days with 25 mm or more rain3220191116
50 mm (1.97 in): Days with 50 mm or more rain321419135
100 mm (3.94 in): Days with 100 mm or more rain19319041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1891.

Download the Data

  • Data for Hornsby Junction (Thornleigh) 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).