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Built 2026-10-17 (17 October 2026)

Waipahu 750 Threshold Days by Year

9 fixed thresholds counted per year at Waipahu 750 (USC00519738): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waipahu 750 Thresholds

  • Waipahu 750: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1951 with 30.
  • Waipahu 750: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1916 with 14.
  • Waipahu 750: days with a maximum temperature at or above 30 C (86 F) in 18 years, most in 1907 with 137.
  • Waipahu 750: nights with a minimum temperature at or above 20 C (68 F) in 18 years, most in 1952 with 191.
  • 9 fixed thresholds have at least one qualifying day at Waipahu 750.
18 years with a qualifying day
Days at or above 30 C (86 F) per year at Waipahu 750 Days per year at Waipahu 750 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 137 in 1907. 0501001501907: 1371908: 961909: 1221910: 291911: 531912: 401913: 961914: 781915: 1201916: 141917: 711918: 611920: 1001921: 1281922: 531950: 961951: 1131952: 99190719091911191319151917192019221951
Days per year at Waipahu 750 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 137 in 1907.
Days at or above 30 C (86 F) per year at Waipahu 750
YearDaysDecade average
1907137118.3
190896118.3
1909122118.3
19102962.4
19115362.4
19124062.4
19139662.4
19147862.4
191512062.4
19161462.4
19177162.4
19186162.4
192010093.7
192112893.7
19225393.7
195096102.7
1951113102.7
195299102.7
First to last qualifying date each year at Waipahu 750 For each year, a bar from the first to the last day at Waipahu 750 meeting 30 C (86 F). 1907: 5 February 1907 to 8 December 19071908: 14 May 1908 to 19 November 19081909: 6 May 1909 to 28 November 19091910: 27 June 1910 to 13 November 19101911: 14 April 1911 to 1 November 19111912: 27 June 1912 to 4 October 19121913: 29 June 1913 to 19 November 19131914: 30 April 1914 to 17 November 19141915: 24 February 1915 to 15 October 19151916: 29 March 1916 to 7 October 19161917: 15 June 1917 to 18 November 19171918: 18 March 1918 to 30 October 19181920: 3 May 1920 to 7 November 19201921: 11 March 1921 to 16 December 19211922: 30 March 1922 to 14 November 19221950: 27 February 1950 to 23 November 19501951: 26 May 1951 to 7 November 19511952: 26 June 1952 to 11 December 1952190719101913191619201950JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Waipahu 750 meeting 30 C (86 F).
First to last qualifying date each year at Waipahu 750
YearFirst dateLast date
19071907-02-051907-12-08
19081908-05-141908-11-19
19091909-05-061909-11-28
19101910-06-271910-11-13
19111911-04-141911-11-01
19121912-06-271912-10-04
19131913-06-291913-11-19
19141914-04-301914-11-17
19151915-02-241915-10-15
19161916-03-291916-10-07
19171917-06-151917-11-18
19181918-03-181918-10-30
19201920-05-031920-11-07
19211921-03-111921-12-16
19221922-03-301922-11-14
19501950-02-271950-11-23
19511951-05-261951-11-07
19521952-06-261952-12-11

Every Fixed Threshold

Fixed thresholds at Waipahu 750
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days18137190799
90 F (32.2 C): Days11819077
20 C (68 F): Tropical nights (min181911952191
25 C (77 F): Days with min3219071
10 mm (0.39 in): Days with 10 mm or more rain243019519
25 mm (0.98 in): Days with 25 mm or more rain241419161
50 mm (1.97 in): Days with 50 mm or more rain17619184
100 mm (3.94 in): Days with 100 mm or more rain8219162
200 mm (7.87 in): Days with 200 mm or more rain1119201

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

  • Data for Waipahu 750 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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