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Built 2026-10-19 (19 October 2026)

Massacre Rocks Sp Threshold Days by Year (USC00105678)

15 fixed thresholds counted per year at Massacre Rocks Sp (USC00105678): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Massacre Rocks Sp Thresholds

  • Massacre Rocks Sp: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 2016 with 15.
  • Massacre Rocks Sp: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2025 with 86.
  • Massacre Rocks Sp: days with a maximum temperature at or above 35 C (95 F) in 37 years, most in 1994 with 42.
  • Massacre Rocks Sp: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1981 with 72.
  • 15 fixed thresholds have at least one qualifying day at Massacre Rocks Sp.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Massacre Rocks Sp Days per year at Massacre Rocks Sp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 86 in 2025. 02550751001974: 761975: 481976: 641977: 751978: 621979: 851980: 691981: 821982: 651983: 551992: 791993: 401994: 811995: 601996: 771998: 701999: 582003: 762004: 542005: 632009: 692011: 662012: 762013: 792014: 602015: 752016: 572017: 722018: 562019: 532020: 702021: 752022: 782023: 492024: 832025: 862026: 701974197819821994199920092014201820222026
Days per year at Massacre Rocks Sp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 86 in 2025.
Days at or above 30 C (86 F) per year at Massacre Rocks Sp
YearDaysDecade average
19747668.3
19754868.3
19766468.3
19777568.3
19786268.3
19798568.3
19806967.8
19818267.8
19826567.8
19835567.8
19927966.4
19934066.4
19948166.4
19956066.4
19967766.4
19987066.4
19995866.4
20037665.5
20045465.5
20056365.5
20096965.5
20116666
20127666
20137966
20146066
20157566
20165766
20177266
20185666
20195366
20207073
20217573
20227873
20234973
20248373
20258673
20267073
First to last qualifying date each year at Massacre Rocks Sp For each year, a bar from the first to the last day at Massacre Rocks Sp meeting 30 C (86 F). 1974: 11 June 1974 to 25 September 19741975: 30 June 1975 to 9 September 19751976: 6 June 1976 to 10 September 19761977: 24 April 1977 to 11 September 19771978: 9 June 1978 to 27 September 19781979: 15 May 1979 to 7 October 19791980: 21 May 1980 to 8 October 19801981: 22 June 1981 to 19 September 19811982: 11 June 1982 to 10 September 19821983: 26 May 1983 to 16 September 19831992: 26 April 1992 to 2 October 19921993: 20 May 1993 to 4 October 19931994: 20 April 1994 to 28 September 19941995: 12 June 1995 to 17 September 19951996: 3 June 1996 to 11 October 19961998: 30 June 1998 to 18 September 19981999: 14 June 1999 to 18 September 19992003: 24 May 2003 to 4 October 20032004: 4 June 2004 to 18 September 20042005: 17 June 2005 to 2 October 20052009: 19 May 2009 to 29 September 20092011: 24 June 2011 to 4 October 20112012: 23 April 2012 to 23 September 20122013: 13 May 2013 to 18 September 20132014: 28 May 2014 to 26 September 20142015: 1 June 2015 to 11 October 20152016: 6 June 2016 to 21 September 20162017: 31 May 2017 to 13 September 20172018: 26 May 2018 to 30 September 20182019: 7 June 2019 to 17 September 20192020: 29 May 2020 to 18 September 20202021: 7 May 2021 to 11 September 20212022: 27 May 2022 to 28 September 20222023: 1 May 2023 to 18 September 20232024: 29 May 2024 to 10 October 20242025: 10 May 2025 to 26 September 20252026: 11 May 2026 to 28 August 202619741979199219982009201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Massacre Rocks Sp meeting 30 C (86 F).
First to last qualifying date each year at Massacre Rocks Sp
YearFirst dateLast date
19741974-06-111974-09-25
19751975-06-301975-09-09
19761976-06-061976-09-10
19771977-04-241977-09-11
19781978-06-091978-09-27
19791979-05-151979-10-07
19801980-05-211980-10-08
19811981-06-221981-09-19
19821982-06-111982-09-10
19831983-05-261983-09-16
19921992-04-261992-10-02
19931993-05-201993-10-04
19941994-04-201994-09-28
19951995-06-121995-09-17
19961996-06-031996-10-11
19981998-06-301998-09-18
19991999-06-141999-09-18
20032003-05-242003-10-04
20042004-06-042004-09-18
20052005-06-172005-10-02
20092009-05-192009-09-29
20112011-06-242011-10-04
20122012-04-232012-09-23
20132013-05-132013-09-18
20142014-05-282014-09-26
20152015-06-012015-10-11
20162016-06-062016-09-21
20172017-05-312017-09-13
20182018-05-262018-09-30
20192019-06-072019-09-17
20202020-05-292020-09-18
20212021-05-072021-09-11
20222022-05-272022-09-28
20232023-05-012023-09-18
20242024-05-292024-10-10
20252025-05-102025-09-26
20262026-05-112026-08-28

Every Fixed Threshold

Fixed thresholds at Massacre Rocks Sp
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3786202570
35 C (95 F): Days3742199436
40 C (104 F): Days16420032
90 F (32.2 C): Days3772198154
100 F (37.8 C): Days3318199416
0 C (32 F): Ice days (max375620224
0 C (32 F): Frost days (min35187202272
-10 C (14 F): Days with min355520222
-20 C (-4 F): Days with min261319792
-30 C (-22 F): Days with min3119791
20 C (68 F): Tropical nights (min19419815
10 mm (0.39 in): Days with 10 mm or more rain451520166
25 mm (0.98 in): Days with 25 mm or more rain18219753
50 mm (1.97 in): Days with 50 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall13419801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

  • Data for Massacre Rocks Sp 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).