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Manoa Lyon Arbo 785.2 Weather Records (USC00516128)

Record envelope, standing records and threshold days for Manoa Lyon Arbo 785.2 (USC00516128), Hawaii, United States, with 52 years of record.

Key Facts for Manoa Lyon Arbo 785.2

  • Manoa Lyon Arbo 785.2 (USC00516128) is a weather station in Hawaii, United States at 21.33 latitude and -157.80 longitude, 152 m (500 ft) above sea level.
  • The station reports from 1975 to 2026, 52 years of record.
  • 1,464 records set at Manoa Lyon Arbo 785.2 still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Manoa Lyon Arbo 785.2 set a daily record high maximum temperature of 31.7 C (89.1 F) on 30 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Hawaii, United States, 21.33 latitude, -157.80 longitude.
  • Elevation: 152 m (500 ft).
  • Period of record: 1975 to 2026, 52 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

5 days at or beyond a record
Daily record high and record low at Manoa Lyon Arbo 785.2, with 2026 drawn through them The band shows the record high and record low for each calendar day at Manoa Lyon Arbo 785.2. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 5101520253035 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Manoa Lyon Arbo 785.2. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Manoa Lyon Arbo 785.2, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.1 C (88.0 F)11.1 C (52.0 F)28.3 C (82.9 F)16.1 C (61.0 F)
Feb30.6 C (87.1 F)10.0 C (50.0 F)27.8 C (82.0 F)15.6 C (60.1 F)
Mar32.2 C (90.0 F)11.1 C (52.0 F)27.8 C (82.0 F)16.7 C (62.1 F)
Apr30.0 C (86.0 F)13.3 C (55.9 F)28.3 C (82.9 F)16.7 C (62.1 F)
May31.7 C (89.1 F)13.3 C (55.9 F)28.3 C (82.9 F)15.6 C (60.1 F)
Jun31.7 C (89.1 F)15.0 C (59.0 F)28.9 C (84.0 F)19.4 C (66.9 F)
Jul31.7 C (89.1 F)16.1 C (61.0 F)28.9 C (84.0 F)20.0 C (68.0 F)
Aug32.2 C (90.0 F)16.1 C (61.0 F)31.7 C (89.1 F)20.6 C (69.1 F)
Sep33.3 C (91.9 F)17.2 C (63.0 F)31.7 C (89.1 F)20.6 C (69.1 F)
Oct32.8 C (91.0 F)15.0 C (59.0 F)31.7 C (89.1 F)19.4 C (66.9 F)
Nov32.2 C (90.0 F)13.9 C (57.0 F)n/an/a
Dec31.1 C (88.0 F)9.4 C (48.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Manoa Lyon Arbo 785.2 by the year they were set 1,464 records at Manoa Lyon Arbo 785.2 still stand. 1983 holds the most, with 92. 02550751001975: 451976: 881977: 361978: 211979: 411980: 321981: 581982: 301983: 921984: 691985: 311986: 691987: 571988: 461989: 341990: 321991: 211992: 191993: 301994: 231995: 191996: 351997: 241998: 311999: 112000: 122001: 82002: 212003: 302004: 382005: 262006: 172007: 92008: 122009: 212010: 192011: 192012: 182013: 142014: 152015: 312016: 182017: 372018: 182019: 242020: 112021: 112022: 142023: 92024: 102025: 42026: 4197519811987199319992005201120172023
1,464 records at Manoa Lyon Arbo 785.2 still stand. 1983 holds the most, with 92.
Standing records at Manoa Lyon Arbo 785.2 by the year they were set
Year setStanding records
197545
197688
197736
197821
197941
198032
198158
198230
198392
198469
198531
198669
198757
198846
198934
199032
199121
199219
199330
199423
199519
199635
199724
199831
199911
200012
20018
200221
200330
200438
200526
200617
20079
200812
200921
201019
201119
201218
201314
201415
201531
201618
201737
201818
201924
202011
202111
202214
20239
202410
20254
20264

All-Time Record Progression

1 new records
When Manoa Lyon Arbo 785.2 set new all-time records 1 all-time records were set at Manoa Lyon Arbo 785.2 between 4 July 2017 and 4 July 2017. Each dot is a new record. Record high minimum temperature4 July 2017: Record high minimum temperature 25.0 C (77.0 F)
1 all-time records were set at Manoa Lyon Arbo 785.2 between 4 July 2017 and 4 July 2017. Each dot is a new record.
When Manoa Lyon Arbo 785.2 set new all-time records
DateKindDetail
2017-07-04Record high minimum temperatureRecord high minimum temperature 25.0 C (77.0 F)

Wettest Day of Each Month

Mar: 336.6 mm (13.3 in)
Record daily precipitation for each month at Manoa Lyon Arbo 785.2 The wettest day on record for each calendar month at Manoa Lyon Arbo 785.2. The most was 336.6 mm (13.3 in) on 25 March 1994. 0100200300400 Jan: 236.7 mm (9.3 in), 1 January 1988 Jan Feb: 158.8 mm (6.3 in), 28 February 1995 Feb Mar: 336.6 mm (13.3 in), 25 March 1994 Mar Apr: 197.6 mm (7.8 in), 20 April 1977 Apr May: 198.4 mm (7.8 in), 12 May 1988 May Jun: 140.7 mm (5.5 in), 5 June 2007 Jun Jul: 141.2 mm (5.6 in), 22 July 1993 Jul Aug: 152.4 mm (6.0 in), 24 August 2021 Aug Sep: 178.6 mm (7.0 in), 13 September 2018 Sep Oct: 280.7 mm (11.1 in), 31 October 2004 Oct Nov: 204.7 mm (8.1 in), 10 November 2013 Nov Dec: 212.1 mm (8.4 in), 31 December 1987 Dec
The wettest day on record for each calendar month at Manoa Lyon Arbo 785.2. The most was 336.6 mm (13.3 in) on 25 March 1994.
Record daily precipitation for each month at Manoa Lyon Arbo 785.2
MonthRecord daily precipitation (mm)Date
Jan236.7 mm (9.3 in)1 January 1988
Feb158.8 mm (6.3 in)28 February 1995
Mar336.6 mm (13.3 in)25 March 1994
Apr197.6 mm (7.8 in)20 April 1977
May198.4 mm (7.8 in)12 May 1988
Jun140.7 mm (5.5 in)5 June 2007
Jul141.2 mm (5.6 in)22 July 1993
Aug152.4 mm (6.0 in)24 August 2021
Sep178.6 mm (7.0 in)13 September 2018
Oct280.7 mm (11.1 in)31 October 2004
Nov204.7 mm (8.1 in)10 November 2013
Dec212.1 mm (8.4 in)31 December 1987

Period of Record Coverage

1975 to 2026
Days with data per year at Manoa Lyon Arbo 785.2 52 years of record at Manoa Lyon Arbo 785.2, 1975 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1975, 1992, 1999, 2026. 1975: 306 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 364 of 366 days1985: 364 of 365 days1986: 363 of 365 days1987: 362 of 365 days1988: 356 of 366 days1989: 361 of 365 days1990: 358 of 365 days1991: 354 of 365 days1992: 324 of 366 days1993: 356 of 365 days1994: 344 of 365 days1995: 348 of 365 days1996: 353 of 366 days1997: 357 of 365 days1998: 349 of 365 days1999: 326 of 365 days2000: 359 of 366 days2001: 345 of 365 days2002: 344 of 365 days2003: 342 of 365 days2004: 347 of 366 days2005: 357 of 365 days2006: 357 of 365 days2007: 362 of 365 days2008: 356 of 366 days2009: 349 of 365 days2010: 348 of 365 days2011: 347 of 365 days2012: 340 of 366 days2013: 340 of 365 days2014: 329 of 365 days2015: 340 of 365 days2016: 340 of 366 days2017: 353 of 365 days2018: 365 of 365 days2019: 364 of 365 days2020: 363 of 366 days2021: 346 of 365 days2022: 356 of 365 days2023: 348 of 365 days2024: 362 of 366 days2025: 359 of 365 days2026: 271 of 365 days19801990200020102020
52 years of record at Manoa Lyon Arbo 785.2, 1975 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1975, 1992, 1999, 2026.
Days with data per year at Manoa Lyon Arbo 785.2
YearDays with dataShare of yearComplete
197530684%No
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982364100%Yes
1983365100%Yes
198436499%Yes
1985364100%Yes
198636399%Yes
198736299%Yes
198835697%Yes
198936199%Yes
199035898%Yes
199135497%Yes
199232489%No
199335698%Yes
199434494%Yes
199534895%Yes
199635396%Yes
199735798%Yes
199834996%Yes
199932689%No
200035998%Yes
200134595%Yes
200234494%Yes
200334294%Yes
200434795%Yes
200535798%Yes
200635798%Yes
200736299%Yes
200835697%Yes
200934996%Yes
201034895%Yes
201134795%Yes
201234093%Yes
201334093%Yes
201432990%Yes
201534093%Yes
201634093%Yes
201735397%Yes
2018365100%Yes
2019364100%Yes
202036399%Yes
202134695%Yes
202235698%Yes
202334895%Yes
202436299%Yes
202535998%Yes
202627174%No

Latest Records

20
Latest records at Manoa Lyon Arbo 785.2
DateStationRecordValueBeat old record byOld record stoodSignificance
30 September 2026Manoa Lyon Arbo 785.2, USdaily high max (Provisional)31.7 C (89.1 F)0.6 C (1.1 F)40 years20 of 100 (Routine)
27 September 2026Manoa Lyon Arbo 785.2, USdaily low max (Tie, Provisional)25.0 C (77.0 F)tie11 years2 of 100 (Routine)
24 September 2026Manoa Lyon Arbo 785.2, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie12 years2 of 100 (Routine)
23 September 2026Manoa Lyon Arbo 785.2, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie28 years3 of 100 (Routine)
18 September 2026Manoa Lyon Arbo 785.2, USdaily high min (Provisional)23.3 C (73.9 F)0.5 C (0.9 F)39 years20 of 100 (Routine)
10 September 2026Manoa Lyon Arbo 785.2, USdaily high max (Tie, Provisional)31.7 C (89.1 F)tie44 years4 of 100 (Routine)
26 August 2026Manoa Lyon Arbo 785.2, USdaily high min (Provisional)23.3 C (73.9 F)0.5 C (0.9 F)40 years21 of 100 (Routine)
23 August 2026Manoa Lyon Arbo 785.2, USall-time high min (Tie, Provisional)25.0 C (77.0 F)tie9 years6 of 100 (Routine)
23 August 2026Manoa Lyon Arbo 785.2, USdaily high max (Tie, Provisional)31.7 C (89.1 F)tie39 years4 of 100 (Routine)
17 August 2026Manoa Lyon Arbo 785.2, USdaily rain (Provisional)71.1 mm (2.8 in)16.2 mm (0.6 in)48 years28 of 100 (Routine)
16 August 2026Manoa Lyon Arbo 785.2, USmonthly rain (Provisional)207.0 mm (8.1 in)54.6 mm (2.1 in)4 years49 of 100 (Notable)
31 July 2026Manoa Lyon Arbo 785.2, USdaily high min23.3 C (73.9 F)0.5 C (0.9 F)44 years22 of 100 (Routine)
28 July 2026Manoa Lyon Arbo 785.2, USdaily rain69.6 mm (2.7 in)27.4 mm (1.1 in)36 years31 of 100 (Routine)
1 July 2026Manoa Lyon Arbo 785.2, USdaily high min (Tie)22.2 C (72.0 F)tie20 years2 of 100 (Routine)
24 June 2026Manoa Lyon Arbo 785.2, USdaily high min (Tie)21.1 C (70.0 F)tie29 years3 of 100 (Routine)
20 June 2026Manoa Lyon Arbo 785.2, USdaily high min22.2 C (72.0 F)0.5 C (0.9 F)23 years15 of 100 (Routine)
19 June 2026Manoa Lyon Arbo 785.2, USdaily high min (Tie)22.2 C (72.0 F)tie7 years1 of 100 (Routine)
5 June 2026Manoa Lyon Arbo 785.2, USdaily low max (Tie)23.3 C (73.9 F)tie8 years1 of 100 (Routine)
3 June 2026Manoa Lyon Arbo 785.2, USdaily rain124.5 mm (4.9 in)73.7 mm (2.9 in)15 years49 of 100 (Notable)
31 May 2026Manoa Lyon Arbo 785.2, USdaily rain58.4 mm (2.3 in)16.5 mm (0.6 in)36 years25 of 100 (Routine)

Climate Trend

45 complete years, 1976 to 2025
Annual mean temperature at Manoa Lyon Arbo 785.2 as warming stripes, 1976 to 2025 One stripe for each of 45 complete years at Manoa Lyon Arbo 785.2, 1976 to 2025. Blue stripes are years cooler than the station's own mean of 22.7 C (72.9 F); red stripes are warmer. The coolest year was 1976, at 21.5 C (70.7 F), and the warmest was 1988, at 23.7 C (74.7 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1976: 21.5 C, -1.2 C from the station mean1977: 22.7 C, 0.0 C from the station mean1978: 22.5 C, -0.2 C from the station mean1979: 22.3 C, -0.4 C from the station mean1980: 22.7 C, 0.0 C from the station mean1981: 23.0 C, +0.3 C from the station mean1982: 22.6 C, -0.1 C from the station mean1983: 21.9 C, -0.9 C from the station mean1984: 22.7 C, 0.0 C from the station mean1986: 23.3 C, +0.6 C from the station mean1987: 23.0 C, +0.3 C from the station mean1988: 23.7 C, +1.0 C from the station mean1989: 23.3 C, +0.6 C from the station mean1990: 22.7 C, 0.0 C from the station mean1991: 22.7 C, -0.1 C from the station mean1993: 22.1 C, -0.6 C from the station mean1994: 22.4 C, -0.3 C from the station mean1995: 22.5 C, -0.2 C from the station mean1996: 22.9 C, +0.2 C from the station mean1997: 22.7 C, 0.0 C from the station mean1998: 22.2 C, -0.5 C from the station mean2000: 22.6 C, -0.1 C from the station mean2001: 22.7 C, 0.0 C from the station mean2002: 23.1 C, +0.3 C from the station mean2003: 23.2 C, +0.5 C from the station mean2004: 23.2 C, +0.4 C from the station mean2005: 22.9 C, +0.2 C from the station mean2006: 22.9 C, +0.2 C from the station mean2007: 22.8 C, +0.1 C from the station mean2008: 22.7 C, 0.0 C from the station mean2009: 22.7 C, 0.0 C from the station mean2010: 22.7 C, -0.1 C from the station mean2011: 22.6 C, -0.1 C from the station mean2013: 22.4 C, -0.3 C from the station mean2014: 22.7 C, 0.0 C from the station mean2015: 22.9 C, +0.2 C from the station mean2016: 22.8 C, +0.1 C from the station mean2017: 22.8 C, +0.1 C from the station mean2018: 22.6 C, -0.1 C from the station mean2019: 23.0 C, +0.2 C from the station mean2020: 22.9 C, +0.1 C from the station mean2022: 22.6 C, -0.1 C from the station mean2023: 22.4 C, -0.3 C from the station mean2024: 22.4 C, -0.3 C from the station mean2025: 23.0 C, +0.2 C from the station mean19761980198519901995200020052010201520202025
One stripe for each of 45 complete years at Manoa Lyon Arbo 785.2, 1976 to 2025. Blue stripes are years cooler than the station's own mean of 22.7 C (72.9 F); red stripes are warmer. The coolest year was 1976, at 21.5 C (70.7 F), and the warmest was 1988, at 23.7 C (74.7 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Manoa Lyon Arbo 785.2 as warming stripes, 1976 to 2025
YearAnnual mean temperatureDifference from the station mean
197621.5 C-1.20 C
197722.7 C-0.02 C
197822.5 C-0.18 C
197922.3 C-0.42 C
198022.7 C+0.03 C
198123.0 C+0.33 C
198222.6 C-0.10 C
198321.9 C-0.85 C
198422.7 C+0.03 C
198623.3 C+0.60 C
198723.0 C+0.34 C
198823.7 C+1.03 C
198923.3 C+0.59 C
199022.7 C-0.03 C
199122.7 C-0.05 C
199322.1 C-0.59 C
199422.4 C-0.30 C
199522.5 C-0.20 C
199622.9 C+0.19 C
199722.7 C-0.01 C
199822.2 C-0.52 C
200022.6 C-0.09 C
200122.7 C-0.04 C
200223.1 C+0.35 C
200323.2 C+0.46 C
200423.2 C+0.45 C
200522.9 C+0.22 C
200622.9 C+0.22 C
200722.8 C+0.09 C
200822.7 C0.00 C
200922.7 C0.00 C
201022.7 C-0.05 C
201122.6 C-0.09 C
201322.4 C-0.31 C
201422.7 C+0.02 C
201522.9 C+0.20 C
201622.8 C+0.07 C
201722.8 C+0.09 C
201822.6 C-0.14 C
201923.0 C+0.25 C
202022.9 C+0.15 C
202222.6 C-0.06 C
202322.4 C-0.26 C
202422.4 C-0.29 C
202523.0 C+0.25 C

The fitted trend in annual mean temperature here over 1976 to 2025 is 0.03 C (-0.04 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Manoa Lyon Arbo 785.2
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.03 C (-0.04 to 0.11) per decade0.1 F (-0.1 to 0.2) per decade1976 to 202545Not clearly different from zero
Mean daily maximum-0.2 C (-0.3 to -0.1) per decade-0.3 F (-0.5 to -0.1) per decade1976 to 202545Fall
Mean daily minimum0.2 C (0.1 to 0.3) per decade0.4 F (0.2 to 0.6) per decade1976 to 202545Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1975 to 2026
Yearly extremes at Manoa Lyon Arbo 785.2: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)33.3 C (91.9 F)198731.1 C (88.0 F)52
Coldest night (TNn)9.4 C (48.9 F)198312.8 C (55.0 F)52
Wettest day (Rx1day)336.6 mm (13.3 in)1994147.0 mm (5.8 in)52
Wettest five days (Rx5day)563.7 mm (22.2 in)1994296.9 mm (11.7 in)52
Longest dry spell (CDD)20 days20059 days52

Hottest day (TXx)

Hottest day (TXx) at Manoa Lyon Arbo 785.2 by year The hottest day of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 33.3 C (91.9 F) in 1987, marked on the chart; the median year is 31.1 C (88.0 F). 2830323419801990200020102020Record: 33.3 C (91.9 F) in 1987
The hottest day of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 33.3 C (91.9 F) in 1987, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Manoa Lyon Arbo 785.2 by year
YearHottest day (TXx)
197530.0 C (86.0 F)
197630.6 C (87.1 F)
197731.7 C (89.1 F)
197831.1 C (88.0 F)
197931.1 C (88.0 F)
198032.2 C (90.0 F)
198132.2 C (90.0 F)
198231.1 C (88.0 F)
198330.6 C (87.1 F)
198432.8 C (91.0 F)
198531.1 C (88.0 F)
198632.2 C (90.0 F)
198733.3 C (91.9 F)
198831.7 C (89.1 F)
198932.2 C (90.0 F)
199030.6 C (87.1 F)
199130.0 C (86.0 F)
199230.6 C (87.1 F)
199331.7 C (89.1 F)
199431.1 C (88.0 F)
199530.0 C (86.0 F)
199631.1 C (88.0 F)
199730.0 C (86.0 F)
199830.6 C (87.1 F)
199928.3 C (82.9 F)
200030.0 C (86.0 F)
200129.4 C (84.9 F)
200230.6 C (87.1 F)
200331.1 C (88.0 F)
200431.1 C (88.0 F)
200530.6 C (87.1 F)
200631.7 C (89.1 F)
200729.4 C (84.9 F)
200830.6 C (87.1 F)
200931.7 C (89.1 F)
201030.6 C (87.1 F)
201130.0 C (86.0 F)
201229.4 C (84.9 F)
201330.0 C (86.0 F)
201431.1 C (88.0 F)
201531.7 C (89.1 F)
201631.1 C (88.0 F)
201730.6 C (87.1 F)
201830.6 C (87.1 F)
201931.7 C (89.1 F)
202031.7 C (89.1 F)
202130.6 C (87.1 F)
202231.7 C (89.1 F)
202331.7 C (89.1 F)
202430.0 C (86.0 F)
202531.7 C (89.1 F)
202631.7 C (89.1 F)

Coldest night (TNn)

Coldest night (TNn) at Manoa Lyon Arbo 785.2 by year The coldest night of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 9.4 C (48.9 F) in 1983, marked on the chart; the median year is 12.8 C (55.0 F). 81012141619801990200020102020Record: 9.4 C (48.9 F) in 1983
The coldest night of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 9.4 C (48.9 F) in 1983, marked on the chart; the median year is 12.8 C (55.0 F).
Coldest night (TNn) at Manoa Lyon Arbo 785.2 by year
YearColdest night (TNn)
197512.2 C (54.0 F)
197611.1 C (52.0 F)
197715.0 C (59.0 F)
197813.9 C (57.0 F)
197912.8 C (55.0 F)
198012.8 C (55.0 F)
198110.0 C (50.0 F)
198211.1 C (52.0 F)
19839.4 C (48.9 F)
198410.6 C (51.1 F)
198511.7 C (53.1 F)
198612.2 C (54.0 F)
198711.7 C (53.1 F)
198812.8 C (55.0 F)
198912.8 C (55.0 F)
199012.8 C (55.0 F)
199111.7 C (53.1 F)
199214.4 C (57.9 F)
199312.2 C (54.0 F)
199412.2 C (54.0 F)
199511.7 C (53.1 F)
199612.8 C (55.0 F)
199712.2 C (54.0 F)
199811.1 C (52.0 F)
199913.9 C (57.0 F)
200013.3 C (55.9 F)
200113.9 C (57.0 F)
200213.9 C (57.0 F)
200312.2 C (54.0 F)
200413.3 C (55.9 F)
200511.7 C (53.1 F)
200613.9 C (57.0 F)
200712.8 C (55.0 F)
200814.4 C (57.9 F)
200911.7 C (53.1 F)
201014.4 C (57.9 F)
201113.3 C (55.9 F)
201214.4 C (57.9 F)
201312.8 C (55.0 F)
201413.3 C (55.9 F)
201511.7 C (53.1 F)
201613.3 C (55.9 F)
201713.9 C (57.0 F)
201814.4 C (57.9 F)
201911.1 C (52.0 F)
202013.3 C (55.9 F)
202112.8 C (55.0 F)
202214.4 C (57.9 F)
202314.4 C (57.9 F)
202412.8 C (55.0 F)
202513.3 C (55.9 F)
202615.6 C (60.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Manoa Lyon Arbo 785.2 by year The wettest day of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 336.6 mm (13.3 in) in 1994, marked on the chart; the median year is 147.0 mm (5.8 in). 010020030040019801990200020102020Record: 336.6 mm (13.3 in) in 1994
The wettest day of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 336.6 mm (13.3 in) in 1994, marked on the chart; the median year is 147.0 mm (5.8 in).
Wettest day (Rx1day) at Manoa Lyon Arbo 785.2 by year
YearWettest day (Rx1day)
1975109.0 mm (4.3 in)
1976125.0 mm (4.9 in)
1977197.6 mm (7.8 in)
1978184.7 mm (7.3 in)
1979177.8 mm (7.0 in)
1980147.6 mm (5.8 in)
1981178.8 mm (7.0 in)
1982193.8 mm (7.6 in)
1983108.5 mm (4.3 in)
1984157.5 mm (6.2 in)
1985128.3 mm (5.1 in)
198697.5 mm (3.8 in)
1987212.1 mm (8.4 in)
1988236.7 mm (9.3 in)
1989161.8 mm (6.4 in)
1990179.1 mm (7.1 in)
1991124.5 mm (4.9 in)
1992133.6 mm (5.3 in)
1993141.2 mm (5.6 in)
1994336.6 mm (13.3 in)
1995158.8 mm (6.3 in)
1996130.0 mm (5.1 in)
1997122.7 mm (4.8 in)
199897.3 mm (3.8 in)
1999117.9 mm (4.6 in)
2000153.9 mm (6.1 in)
2001130.0 mm (5.1 in)
2002173.5 mm (6.8 in)
2003149.4 mm (5.9 in)
2004280.7 mm (11.1 in)
2005120.1 mm (4.7 in)
200694.7 mm (3.7 in)
2007140.7 mm (5.5 in)
2008128.5 mm (5.1 in)
2009189.2 mm (7.4 in)
2010128.0 mm (5.0 in)
2011163.1 mm (6.4 in)
2012136.4 mm (5.4 in)
2013204.7 mm (8.1 in)
2014109.2 mm (4.3 in)
2015173.5 mm (6.8 in)
2016170.2 mm (6.7 in)
2017135.1 mm (5.3 in)
2018178.6 mm (7.0 in)
2019112.3 mm (4.4 in)
2020124.2 mm (4.9 in)
2021211.8 mm (8.3 in)
202288.9 mm (3.5 in)
2023139.2 mm (5.5 in)
2024146.3 mm (5.8 in)
2025211.3 mm (8.3 in)
2026207.0 mm (8.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Manoa Lyon Arbo 785.2 by year The wettest five days of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 563.7 mm (22.2 in) in 1994, marked on the chart; the median year is 296.9 mm (11.7 in). 020040060019801990200020102020Record: 563.7 mm (22.2 in) in 1994
The wettest five days of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 563.7 mm (22.2 in) in 1994, marked on the chart; the median year is 296.9 mm (11.7 in).
Wettest five days (Rx5day) at Manoa Lyon Arbo 785.2 by year
YearWettest five days (Rx5day)
1975291.1 mm (11.5 in)
1976216.4 mm (8.5 in)
1977266.5 mm (10.5 in)
1978299.3 mm (11.8 in)
1979367.6 mm (14.5 in)
1980375.7 mm (14.8 in)
1981307.8 mm (12.1 in)
1982303.3 mm (11.9 in)
1983188.0 mm (7.4 in)
1984195.9 mm (7.7 in)
1985278.2 mm (11.0 in)
1986271.7 mm (10.7 in)
1987255.2 mm (10.0 in)
1988541.0 mm (21.3 in)
1989365.0 mm (14.4 in)
1990522.8 mm (20.6 in)
1991208.1 mm (8.2 in)
1992288.1 mm (11.3 in)
1993372.9 mm (14.7 in)
1994563.7 mm (22.2 in)
1995190.1 mm (7.5 in)
1996344.6 mm (13.6 in)
1997249.1 mm (9.8 in)
1998235.5 mm (9.3 in)
1999257.6 mm (10.1 in)
2000345.5 mm (13.6 in)
2001160.8 mm (6.3 in)
2002369.4 mm (14.5 in)
2003402.2 mm (15.8 in)
2004386.7 mm (15.2 in)
2005269.2 mm (10.6 in)
2006257.8 mm (10.1 in)
2007207.5 mm (8.2 in)
2008309.7 mm (12.2 in)
2009276.5 mm (10.9 in)
2010294.4 mm (11.6 in)
2011305.6 mm (12.0 in)
2012404.6 mm (15.9 in)
2013333.0 mm (13.1 in)
2014208.6 mm (8.2 in)
2015384.4 mm (15.1 in)
2016327.7 mm (12.9 in)
2017249.4 mm (9.8 in)
2018391.7 mm (15.4 in)
2019248.4 mm (9.8 in)
2020263.4 mm (10.4 in)
2021316.6 mm (12.5 in)
2022300.5 mm (11.8 in)
2023299.5 mm (11.8 in)
2024263.4 mm (10.4 in)
2025335.0 mm (13.2 in)
2026292.9 mm (11.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Manoa Lyon Arbo 785.2 by year The longest dry spell of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 20 days in 2005, marked on the chart; the median year is 9 days. 510152019801990200020102020Record: 20 days in 2005
The longest dry spell of the year at Manoa Lyon Arbo 785.2, 1975 to 2026. The record is 20 days in 2005, marked on the chart; the median year is 9 days.
Longest dry spell (CDD) at Manoa Lyon Arbo 785.2 by year
YearLongest dry spell (CDD)
197511 days
197610 days
19778 days
19789 days
19798 days
19807 days
19817 days
19826 days
198315 days
198412 days
198510 days
19868 days
198713 days
19888 days
198913 days
199010 days
19918 days
19929 days
19939 days
19947 days
19957 days
199612 days
19977 days
199811 days
19999 days
20008 days
200112 days
200210 days
200316 days
200411 days
200520 days
20066 days
20079 days
200812 days
20097 days
20109 days
20116 days
20128 days
201311 days
20147 days
201513 days
20168 days
201711 days
20186 days
201913 days
20207 days
20218 days
20229 days
20239 days
20248 days
20259 days
20265 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.

Rainfall Return Levels

45 years, 1976 to 2025

A day with at least 146.2 mm (5.8 in) of rain is expected about once in 2 years. A day with at least 328.5 mm (12.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Manoa Lyon Arbo 785.2: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years146.2 mm (5.8 in)
5 years187.6 mm (7.4 in)
10 years217.7 mm (8.6 in)
25 years259.2 mm (10.2 in)
50 years292.8 mm (11.5 in)Longer than the 45 years of record
100 years328.5 mm (12.9 in)Longer than the 45 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 45 years of values from 1976 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 336.6 mm (13.3 in) in 1994; 280.7 mm (11.1 in) in 2004; 236.7 mm (9.3 in) in 1988.

Download the Data

  • Data for Manoa Lyon Arbo 785.2 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Manoa Lyon Arbo 785.2 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). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).