Built 2026-10-18 (18 October 2026)

Boolite Threshold Days by Year

3 fixed thresholds counted per year at Boolite (ASN00078050): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boolite Thresholds

  • Boolite: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1930 with 17.
  • Boolite: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 1903 with 4.
  • Boolite: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1933 with 2.
  • 3 fixed thresholds have at least one qualifying day at Boolite.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Boolite Days per year at Boolite with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1930. 051015201902: 31903: 111904: 141905: 141906: 111913: 101914: 51915: 111916: 111917: 101918: 71919: 91920: 111921: 101922: 121923: 81924: 111925: 71926: 61927: 61928: 91929: 31930: 171931: 111932: 81933: 16190219051914191719201923192619291932
Days per year at Boolite with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1930.
Days with 10 mm (0.39 in) or more of precipitation per year at Boolite
YearDaysDecade average
1902310.6
19031110.6
19041410.6
19051410.6
19061110.6
1913109
191459
1915119
1916119
1917109
191879
191999
1920118.3
1921108.3
1922128.3
192388.3
1924118.3
192578.3
192668.3
192768.3
192898.3
192938.3
19301713
19311113
1932813
19331613
First to last qualifying date each year at Boolite For each year, a bar from the first to the last day at Boolite meeting 10 mm (0.39 in). 1902: 26 March 1902 to 17 December 19021903: 5 April 1903 to 27 December 19031904: 3 January 1904 to 15 December 19041905: 3 January 1905 to 12 November 19051906: 11 March 1906 to 21 November 19061913: 14 February 1913 to 23 December 19131914: 13 March 1914 to 15 December 19141915: 11 April 1915 to 23 October 19151916: 3 June 1916 to 2 December 19161917: 21 February 1917 to 4 November 19171918: 19 February 1918 to 21 August 19181919: 17 February 1919 to 14 September 19191920: 10 May 1920 to 23 October 19201921: 2 January 1921 to 2 December 19211922: 2 May 1922 to 26 December 19221923: 6 May 1923 to 30 July 19231924: 1 February 1924 to 11 November 19241925: 13 January 1925 to 19 November 19251926: 5 April 1926 to 29 August 19261927: 5 February 1927 to 9 December 19271928: 20 January 1928 to 6 October 19281929: 22 February 1929 to 28 December 19291930: 20 February 1930 to 16 December 19301931: 13 March 1931 to 17 November 19311932: 27 March 1932 to 12 October 19321933: 22 January 1933 to 26 December 19331902190619161920192419281932JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Boolite meeting 10 mm (0.39 in).
First to last qualifying date each year at Boolite
YearFirst dateLast date
19021902-03-261902-12-17
19031903-04-051903-12-27
19041904-01-031904-12-15
19051905-01-031905-11-12
19061906-03-111906-11-21
19131913-02-141913-12-23
19141914-03-131914-12-15
19151915-04-111915-10-23
19161916-06-031916-12-02
19171917-02-211917-11-04
19181918-02-191918-08-21
19191919-02-171919-09-14
19201920-05-101920-10-23
19211921-01-021921-12-02
19221922-05-021922-12-26
19231923-05-061923-07-30
19241924-02-011924-11-11
19251925-01-131925-11-19
19261926-04-051926-08-29
19271927-02-051927-12-09
19281928-01-201928-10-06
19291929-02-221929-12-28
19301930-02-201930-12-16
19311931-03-131931-11-17
19321932-03-271932-10-12
19331933-01-221933-12-26

Every Fixed Threshold

Fixed thresholds at Boolite
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2617193016
25 mm (0.98 in): Days with 25 mm or more rain22419034
50 mm (1.97 in): Days with 50 mm or more rain3219332

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

  • Data for Boolite 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).