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Built 2026-10-19 (19 October 2026)

Ulupalakua Rch 250 Threshold Days by Year

5 fixed thresholds counted per year at Ulupalakua Rch 250 (USC00518760): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ulupalakua Rch 250 Thresholds

  • Ulupalakua Rch 250: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1968 with 46.
  • Ulupalakua Rch 250: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1968 with 26.
  • Ulupalakua Rch 250: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1963 with 9.
  • Ulupalakua Rch 250: days with 100 mm (3.94 in) or more of precipitation in 7 years, most in 1959 with 3.
  • 5 fixed thresholds have at least one qualifying day at Ulupalakua Rch 250.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ulupalakua Rch 250 Days per year at Ulupalakua Rch 250 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1968. 02040601955: 181956: 281957: 91958: 201959: 171960: 191961: 251962: 221963: 311964: 161965: 351966: 191967: 331968: 461970: 211971: 201972: 231973: 131977: 91978: 131979: 231984: 152026: 2019551958196119641967197119771984
Days per year at Ulupalakua Rch 250 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1968.
Days with 10 mm (0.39 in) or more of precipitation per year at Ulupalakua Rch 250
YearDaysDecade average
19551818.4
19562818.4
1957918.4
19582018.4
19591718.4
19601927.3
19612527.3
19622227.3
19633127.3
19641627.3
19653527.3
19661927.3
19673327.3
19684627.3
19702117.4
19712017.4
19722317.4
19731317.4
1977917.4
19781317.4
19792317.4
19841515
20262020
First to last qualifying date each year at Ulupalakua Rch 250 For each year, a bar from the first to the last day at Ulupalakua Rch 250 meeting 10 mm (0.39 in). 1955: 22 January 1955 to 26 December 19551956: 1 January 1956 to 30 November 19561957: 19 January 1957 to 6 December 19571958: 8 January 1958 to 29 December 19581959: 8 January 1959 to 31 October 19591960: 28 January 1960 to 29 December 19601961: 1 January 1961 to 6 December 19611962: 8 January 1962 to 21 December 19621963: 7 January 1963 to 27 December 19631964: 8 January 1964 to 21 December 19641965: 8 January 1965 to 15 November 19651966: 21 January 1966 to 7 December 19661967: 12 January 1967 to 20 December 19671968: 17 January 1968 to 30 December 19681970: 2 January 1970 to 4 December 19701971: 5 January 1971 to 28 October 19711972: 24 January 1972 to 31 December 19721973: 8 January 1973 to 31 December 19731977: 4 February 1977 to 5 December 19771978: 1 March 1978 to 5 December 19781979: 12 January 1979 to 17 October 19791984: 12 January 1984 to 27 November 19842026: 15 January 2026 to 9 October 202619551958196119641967197119771984JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ulupalakua Rch 250 meeting 10 mm (0.39 in).
First to last qualifying date each year at Ulupalakua Rch 250
YearFirst dateLast date
19551955-01-221955-12-26
19561956-01-011956-11-30
19571957-01-191957-12-06
19581958-01-081958-12-29
19591959-01-081959-10-31
19601960-01-281960-12-29
19611961-01-011961-12-06
19621962-01-081962-12-21
19631963-01-071963-12-27
19641964-01-081964-12-21
19651965-01-081965-11-15
19661966-01-211966-12-07
19671967-01-121967-12-20
19681968-01-171968-12-30
19701970-01-021970-12-04
19711971-01-051971-10-28
19721972-01-241972-12-31
19731973-01-081973-12-31
19771977-02-041977-12-05
19781978-03-011978-12-05
19791979-01-121979-10-17
19841984-01-121984-11-27
20262026-01-152026-10-09

Every Fixed Threshold

Fixed thresholds at Ulupalakua Rch 250
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2346196820
25 mm (0.98 in): Days with 25 mm or more rain232619684
50 mm (1.97 in): Days with 50 mm or more rain21919632
100 mm (3.94 in): Days with 100 mm or more rain7319592
200 mm (7.87 in): Days with 200 mm or more rain2119591

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Ulupalakua Rch 250 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).