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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Halawa Valley 542.9 Weather Records (USC00510961)

Record envelope, standing records and threshold days for Halawa Valley 542.9 (USC00510961), Hawaii, United States, with 93 years of record.

Key Facts for Halawa Valley 542.9

  • Halawa Valley 542.9 (USC00510961) is a weather station in Hawaii, United States at 21.16 latitude and -156.74 longitude, 3 m (10 ft) above sea level.
  • The station reports from 1905 to 1997, 93 years of record.
  • 0 records set at Halawa Valley 542.9 still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Hawaii, United States, 21.16 latitude, -156.74 longitude.
  • Elevation: 3 m (10 ft).
  • Period of record: 1905 to 1997, 93 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Halawa Valley 542.9, with 2026 drawn through them The band shows the record high and record low for each calendar day at Halawa Valley 542.9. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Halawa Valley 542.9. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Halawa Valley 542.9, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Halawa Valley 542.9 by the year they were set 0 records at Halawa Valley 542.9 still stand. 00000000000
0 records at Halawa Valley 542.9 still stand.
Standing records at Halawa Valley 542.9 by the year they were set
Year setStanding records

Wettest Day of Each Month

Mar: 220.0 mm (8.7 in)
Record daily precipitation for each month at Halawa Valley 542.9 The wettest day on record for each calendar month at Halawa Valley 542.9. The most was 220.0 mm (8.7 in) on 2 March 1990. 0100200300 Jan: 107.4 mm (4.2 in), 1 January 1988 Jan Feb: 106.2 mm (4.2 in), 15 February 1987 Feb Mar: 220.0 mm (8.7 in), 2 March 1990 Mar Apr: 66.0 mm (2.6 in), 8 April 1989 Apr May: 61.0 mm (2.4 in), 10 May 1996 May Jun: 43.2 mm (1.7 in), 27 June 1932 Jun Jul: 45.7 mm (1.8 in), 19 July 1986 Jul Aug: 31.8 mm (1.3 in), 9 August 1905 Aug Sep: 66.0 mm (2.6 in), 16 September 1905 Sep Oct: 92.7 mm (3.6 in), 16 October 1988 Oct Nov: 159.0 mm (6.3 in), 21 November 1992 Nov Dec: 133.9 mm (5.3 in), 5 December 1986 Dec
The wettest day on record for each calendar month at Halawa Valley 542.9. The most was 220.0 mm (8.7 in) on 2 March 1990.
Record daily precipitation for each month at Halawa Valley 542.9
MonthRecord daily precipitation (mm)Date
Jan107.4 mm (4.2 in)1 January 1988
Feb106.2 mm (4.2 in)15 February 1987
Mar220.0 mm (8.7 in)2 March 1990
Apr66.0 mm (2.6 in)8 April 1989
May61.0 mm (2.4 in)10 May 1996
Jun43.2 mm (1.7 in)27 June 1932
Jul45.7 mm (1.8 in)19 July 1986
Aug31.8 mm (1.3 in)9 August 1905
Sep66.0 mm (2.6 in)16 September 1905
Oct92.7 mm (3.6 in)16 October 1988
Nov159.0 mm (6.3 in)21 November 1992
Dec133.9 mm (5.3 in)5 December 1986

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1905 to 1997
Yearly extremes at Halawa Valley 542.9: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)220.0 mm (8.7 in)199061.0 mm (2.4 in)24
Wettest five days (Rx5day)277.2 mm (10.9 in)1989115.4 mm (4.5 in)24
Longest dry spell (CDD)50 days193413 days24

Wettest day (Rx1day)

Wettest day (Rx1day) at Halawa Valley 542.9 by year The wettest day of the year at Halawa Valley 542.9, 1905 to 1997. The record is 220.0 mm (8.7 in) in 1990, marked on the chart; the median year is 61.0 mm (2.4 in). 0501001502002501920194019601980Record: 220.0 mm (8.7 in) in 1990
The wettest day of the year at Halawa Valley 542.9, 1905 to 1997. The record is 220.0 mm (8.7 in) in 1990, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Halawa Valley 542.9 by year
YearWettest day (Rx1day)
190566.0 mm (2.6 in)
190663.5 mm (2.5 in)
190761.0 mm (2.4 in)
190829.2 mm (1.1 in)
193050.8 mm (2.0 in)
193150.8 mm (2.0 in)
193255.9 mm (2.2 in)
1933101.6 mm (4.0 in)
193450.8 mm (2.0 in)
198353.3 mm (2.1 in)
198440.6 mm (1.6 in)
198553.6 mm (2.1 in)
1986133.9 mm (5.3 in)
1987132.1 mm (5.2 in)
1988128.0 mm (5.0 in)
1989143.0 mm (5.6 in)
1990220.0 mm (8.7 in)
199178.7 mm (3.1 in)
1992159.0 mm (6.3 in)
199337.3 mm (1.5 in)
199496.5 mm (3.8 in)
199551.1 mm (2.0 in)
199661.0 mm (2.4 in)
199743.7 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Halawa Valley 542.9 by year The wettest five days of the year at Halawa Valley 542.9, 1905 to 1997. The record is 277.2 mm (10.9 in) in 1989, marked on the chart; the median year is 115.4 mm (4.5 in). 01002003001920194019601980Record: 277.2 mm (10.9 in) in 1989
The wettest five days of the year at Halawa Valley 542.9, 1905 to 1997. The record is 277.2 mm (10.9 in) in 1989, marked on the chart; the median year is 115.4 mm (4.5 in).
Wettest five days (Rx5day) at Halawa Valley 542.9 by year
YearWettest five days (Rx5day)
1905115.5 mm (4.5 in)
1906121.9 mm (4.8 in)
1907129.6 mm (5.1 in)
190859.6 mm (2.3 in)
1930110.5 mm (4.4 in)
193155.9 mm (2.2 in)
1932109.2 mm (4.3 in)
1933246.4 mm (9.7 in)
193453.6 mm (2.1 in)
198399.5 mm (3.9 in)
198485.5 mm (3.4 in)
1985115.2 mm (4.5 in)
1986142.3 mm (5.6 in)
1987193.6 mm (7.6 in)
1988184.3 mm (7.3 in)
1989277.2 mm (10.9 in)
199080.8 mm (3.2 in)
1991116.8 mm (4.6 in)
1992226.5 mm (8.9 in)
199358.6 mm (2.3 in)
1994159.1 mm (6.3 in)
199575.0 mm (3.0 in)
1996135.4 mm (5.3 in)
199793.3 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Halawa Valley 542.9 by year The longest dry spell of the year at Halawa Valley 542.9, 1905 to 1997. The record is 50 days in 1934, marked on the chart; the median year is 13 days. 02040601920194019601980Record: 50 days in 1934
The longest dry spell of the year at Halawa Valley 542.9, 1905 to 1997. The record is 50 days in 1934, marked on the chart; the median year is 13 days.
Longest dry spell (CDD) at Halawa Valley 542.9 by year
YearLongest dry spell (CDD)
190520 days
190610 days
190713 days
19089 days
193025 days
193131 days
193243 days
193348 days
193450 days
198313 days
198422 days
198510 days
198620 days
198712 days
198810 days
19898 days
19908 days
199115 days
199212 days
19935 days
199417 days
199524 days
199613 days
199712 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

  • Data for Halawa Valley 542.9 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Halawa Valley 542.9 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). Records are computed by this site and are not official.

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