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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Waiahole 837 Threshold Days by Year

5 fixed thresholds counted per year at Waiahole 837 (USC00518964): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waiahole 837 Thresholds

  • Waiahole 837: days with 10 mm (0.39 in) or more of precipitation in 13 years, most in 1942 with 123.
  • Waiahole 837: days with 25 mm (0.98 in) or more of precipitation in 13 years, most in 1942 with 56.
  • Waiahole 837: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 1942 with 31.
  • Waiahole 837: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1942 with 11.
  • 5 fixed thresholds have at least one qualifying day at Waiahole 837.
13 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Waiahole 837 Days per year at Waiahole 837 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 123 in 1942. 0501001501942: 1231943: 1091944: 931945: 851946: 971947: 761948: 1031949: 641950: 761951: 831952: 911953: 651956: 1111942194419461948195019521956
Days per year at Waiahole 837 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 123 in 1942.
Days with 10 mm (0.39 in) or more of precipitation per year at Waiahole 837
YearDaysDecade average
194212393.8
194310993.8
19449393.8
19458593.8
19469793.8
19477693.8
194810393.8
19496493.8
19507685.2
19518385.2
19529185.2
19536585.2
195611185.2
First to last qualifying date each year at Waiahole 837 For each year, a bar from the first to the last day at Waiahole 837 meeting 10 mm (0.39 in). 1942: 25 January 1942 to 29 December 19421943: 2 January 1943 to 28 December 19431944: 12 January 1944 to 27 December 19441945: 16 January 1945 to 24 December 19451946: 7 January 1946 to 31 December 19461947: 2 January 1947 to 20 December 19471948: 1 January 1948 to 31 December 19481949: 8 January 1949 to 28 December 19491950: 7 January 1950 to 29 December 19501951: 1 January 1951 to 31 December 19511952: 1 January 1952 to 20 December 19521953: 2 January 1953 to 27 December 19531956: 1 January 1956 to 20 December 19561942194419461948195019521956JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Waiahole 837 meeting 10 mm (0.39 in).
First to last qualifying date each year at Waiahole 837
YearFirst dateLast date
19421942-01-251942-12-29
19431943-01-021943-12-28
19441944-01-121944-12-27
19451945-01-161945-12-24
19461946-01-071946-12-31
19471947-01-021947-12-20
19481948-01-011948-12-31
19491949-01-081949-12-28
19501950-01-071950-12-29
19511951-01-011951-12-31
19521952-01-011952-12-20
19531953-01-021953-12-27
19561956-01-011956-12-20

Every Fixed Threshold

Fixed thresholds at Waiahole 837
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain131231942111
25 mm (0.98 in): Days with 25 mm or more rain1356194240
50 mm (1.97 in): Days with 50 mm or more rain1331194215
100 mm (3.94 in): Days with 100 mm or more rain131119422
200 mm (7.87 in): Days with 200 mm or more rain6219421

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Waiahole 837 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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