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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Tower Hill Threshold Days by Year

4 fixed thresholds counted per year at Tower Hill (ASN00036115): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tower Hill Thresholds

  • Tower Hill: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1894 with 24.
  • Tower Hill: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1918 with 11.
  • Tower Hill: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1898 with 3.
  • Tower Hill: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1914 with 1.
  • 4 fixed thresholds have at least one qualifying day at Tower Hill.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Tower Hill Days per year at Tower Hill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1894. 01020301893: 111894: 241895: 151896: 191897: 101898: 141899: 161913: 141914: 121915: 61916: 161917: 151918: 161919: 91920: 231921: 131922: 121923: 31924: 151925: 131927: 181893189618991915191819211924
Days per year at Tower Hill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1894.
Days with 10 mm (0.39 in) or more of precipitation per year at Tower Hill
YearDaysDecade average
18931115.6
18942415.6
18951515.6
18961915.6
18971015.6
18981415.6
18991615.6
19131412.6
19141212.6
1915612.6
19161612.6
19171512.6
19181612.6
1919912.6
19202313.9
19211313.9
19221213.9
1923313.9
19241513.9
19251313.9
19271813.9
First to last qualifying date each year at Tower Hill For each year, a bar from the first to the last day at Tower Hill meeting 10 mm (0.39 in). 1893: 9 January 1893 to 22 December 18931894: 9 January 1894 to 15 December 18941895: 6 January 1895 to 5 December 18951896: 28 January 1896 to 21 December 18961897: 7 January 1897 to 23 November 18971898: 2 January 1898 to 8 November 18981899: 3 January 1899 to 25 October 18991913: 10 January 1913 to 19 December 19131914: 26 January 1914 to 26 December 19141915: 20 January 1915 to 28 December 19151916: 4 February 1916 to 31 December 19161917: 3 January 1917 to 13 December 19171918: 5 January 1918 to 15 March 19181919: 14 January 1919 to 26 December 19191920: 18 January 1920 to 7 December 19201921: 15 January 1921 to 26 December 19211922: 30 January 1922 to 27 December 19221923: 26 April 1923 to 26 December 19231924: 6 January 1924 to 15 December 19241925: 11 January 1925 to 30 December 19251927: 22 January 1927 to 24 December 19271893189618991915191819211924JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tower Hill meeting 10 mm (0.39 in).
First to last qualifying date each year at Tower Hill
YearFirst dateLast date
18931893-01-091893-12-22
18941894-01-091894-12-15
18951895-01-061895-12-05
18961896-01-281896-12-21
18971897-01-071897-11-23
18981898-01-021898-11-08
18991899-01-031899-10-25
19131913-01-101913-12-19
19141914-01-261914-12-26
19151915-01-201915-12-28
19161916-02-041916-12-31
19171917-01-031917-12-13
19181918-01-051918-03-15
19191919-01-141919-12-26
19201920-01-181920-12-07
19211921-01-151921-12-26
19221922-01-301922-12-27
19231923-04-261923-12-26
19241924-01-061924-12-15
19251925-01-111925-12-30
19271927-01-221927-12-24

Every Fixed Threshold

Fixed thresholds at Tower Hill
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2124189418
25 mm (0.98 in): Days with 25 mm or more rain211119187
50 mm (1.97 in): Days with 50 mm or more rain17318981
100 mm (3.94 in): Days with 100 mm or more rain2119141

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

  • Data for Tower Hill 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).