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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Helemano Intake 881 Threshold Days by Year

5 fixed thresholds counted per year at Helemano Intake 881 (USC00511384): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Helemano Intake 881 Thresholds

  • Helemano Intake 881: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1948 with 83.
  • Helemano Intake 881: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1951 with 25.
  • Helemano Intake 881: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1951 with 13.
  • Helemano Intake 881: days with 100 mm (3.94 in) or more of precipitation in 12 years, most in 1949 with 3.
  • 5 fixed thresholds have at least one qualifying day at Helemano Intake 881.
16 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Helemano Intake 881 Days per year at Helemano Intake 881 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 83 in 1948. 02550751001943: 511944: 471948: 831949: 371950: 591951: 471952: 481953: 261954: 571955: 581957: 421958: 371959: 321960: 451961: 421962: 3719431948195019521954195719591961
Days per year at Helemano Intake 881 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 83 in 1948.
Days with 10 mm (0.39 in) or more of precipitation per year at Helemano Intake 881
YearDaysDecade average
19435154.5
19444754.5
19488354.5
19493754.5
19505945.1
19514745.1
19524845.1
19532645.1
19545745.1
19555845.1
19574245.1
19583745.1
19593245.1
19604541.3
19614241.3
19623741.3
First to last qualifying date each year at Helemano Intake 881 For each year, a bar from the first to the last day at Helemano Intake 881 meeting 10 mm (0.39 in). 1943: 1 January 1943 to 28 December 19431944: 2 January 1944 to 25 December 19441948: 1 January 1948 to 31 December 19481949: 7 January 1949 to 30 December 19491950: 7 January 1950 to 30 December 19501951: 1 January 1951 to 31 December 19511952: 4 January 1952 to 5 December 19521953: 7 January 1953 to 27 December 19531954: 1 January 1954 to 31 December 19541955: 4 January 1955 to 21 December 19551957: 7 January 1957 to 28 December 19571958: 28 January 1958 to 29 December 19581959: 12 January 1959 to 17 December 19591960: 5 January 1960 to 29 December 19601961: 1 January 1961 to 13 December 19611962: 7 January 1962 to 24 December 196219431948195019521954195719591961JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Helemano Intake 881 meeting 10 mm (0.39 in).
First to last qualifying date each year at Helemano Intake 881
YearFirst dateLast date
19431943-01-011943-12-28
19441944-01-021944-12-25
19481948-01-011948-12-31
19491949-01-071949-12-30
19501950-01-071950-12-30
19511951-01-011951-12-31
19521952-01-041952-12-05
19531953-01-071953-12-27
19541954-01-011954-12-31
19551955-01-041955-12-21
19571957-01-071957-12-28
19581958-01-281958-12-29
19591959-01-121959-12-17
19601960-01-051960-12-29
19611961-01-011961-12-13
19621962-01-071962-12-24

Every Fixed Threshold

Fixed thresholds at Helemano Intake 881
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1683194837
25 mm (0.98 in): Days with 25 mm or more rain1625195112
50 mm (1.97 in): Days with 50 mm or more rain161319517
100 mm (3.94 in): Days with 100 mm or more rain12319492
200 mm (7.87 in): Days with 200 mm or more rain2119541

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

  • Data for Helemano Intake 881 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).