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Built 2026-10-16 (16 October 2026)

Clarendon Threshold Days by Year

17 fixed thresholds counted per year at Clarendon (USC00031442): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarendon Thresholds

  • Clarendon: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1923 with 58.
  • Clarendon: days with 25 mm (0.98 in) or more of precipitation in 89 years, most in 1990 with 25.
  • Clarendon: days with 50 mm (1.97 in) or more of precipitation in 84 years, most in 1906 with 13.
  • Clarendon: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1987 with 128.
  • 17 fixed thresholds have at least one qualifying day at Clarendon.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Clarendon Days per year at Clarendon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 1987. 0501001501966: 871967: 881968: 971969: 1131970: 1141971: 1131972: 1241973: 1091974: 901975: 1031983: 901984: 841985: 1151986: 1151987: 1281988: 1101989: 841990: 1051991: 1071992: 891993: 1001994: 921995: 1141996: 1011997: 911998: 1251999: 1022000: 1052001: 1012002: 1102003: 802004: 822008: 802011: 1002012: 100196619701974198519891993199720012008
Days per year at Clarendon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 1987.
Days at or above 30 C (86 F) per year at Clarendon
YearDaysDecade average
19668796.3
19678896.3
19689796.3
196911396.3
1970114108.8
1971113108.8
1972124108.8
1973109108.8
197490108.8
1975103108.8
198390103.7
198484103.7
1985115103.7
1986115103.7
1987128103.7
1988110103.7
198984103.7
1990105102.6
1991107102.6
199289102.6
1993100102.6
199492102.6
1995114102.6
1996101102.6
199791102.6
1998125102.6
1999102102.6
200010593
200110193
200211093
20038093
20048293
20088093
2011100100
2012100100
First to last qualifying date each year at Clarendon For each year, a bar from the first to the last day at Clarendon meeting 30 C (86 F). 1966: 21 May 1966 to 9 October 19661967: 5 April 1967 to 15 October 19671968: 24 May 1968 to 15 October 19681969: 15 May 1969 to 11 October 19691970: 30 April 1970 to 3 October 19701971: 19 April 1971 to 29 October 19711972: 12 April 1972 to 16 October 19721973: 11 May 1973 to 9 October 19731974: 1 April 1974 to 21 September 19741975: 27 April 1975 to 15 October 19751983: 29 May 1983 to 6 October 19831984: 13 May 1984 to 21 October 19841985: 1 May 1985 to 14 October 19851986: 31 March 1986 to 4 October 19861987: 19 April 1987 to 17 September 19871988: 3 April 1988 to 28 September 19881989: 22 April 1989 to 9 September 19891990: 26 April 1990 to 3 October 19901991: 11 May 1991 to 3 October 19911992: 14 April 1992 to 26 October 19921993: 7 May 1993 to 7 October 19931994: 26 April 1994 to 22 October 19941995: 23 March 1995 to 16 October 19951996: 19 April 1996 to 24 September 19961997: 18 May 1997 to 12 October 19971998: 12 May 1998 to 30 October 19981999: 23 April 1999 to 15 October 19992000: 11 May 2000 to 15 October 20002001: 9 April 2001 to 2 October 20012002: 17 April 2002 to 6 October 20022003: 13 April 2003 to 24 October 20032004: 6 May 2004 to 19 October 20042008: 20 May 2008 to 14 September 20082011: 10 April 2011 to 17 October 20112012: 2 April 2012 to 28 September 20121966197119831988199319982003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Clarendon meeting 30 C (86 F).
First to last qualifying date each year at Clarendon
YearFirst dateLast date
19661966-05-211966-10-09
19671967-04-051967-10-15
19681968-05-241968-10-15
19691969-05-151969-10-11
19701970-04-301970-10-03
19711971-04-191971-10-29
19721972-04-121972-10-16
19731973-05-111973-10-09
19741974-04-011974-09-21
19751975-04-271975-10-15
19831983-05-291983-10-06
19841984-05-131984-10-21
19851985-05-011985-10-14
19861986-03-311986-10-04
19871987-04-191987-09-17
19881988-04-031988-09-28
19891989-04-221989-09-09
19901990-04-261990-10-03
19911991-05-111991-10-03
19921992-04-141992-10-26
19931993-05-071993-10-07
19941994-04-261994-10-22
19951995-03-231995-10-16
19961996-04-191996-09-24
19971997-05-181997-10-12
19981998-05-121998-10-30
19991999-04-231999-10-15
20002000-05-112000-10-15
20012001-04-092001-10-02
20022002-04-172002-10-06
20032003-04-132003-10-24
20042004-05-062004-10-19
20082008-05-202008-09-14
20112011-04-102011-10-17
20122012-04-022012-09-28

Every Fixed Threshold

Fixed thresholds at Clarendon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days351281987100
35 C (95 F): Days3445199832
40 C (104 F): Days3219861
90 F (32.2 C): Days35103199866
100 F (37.8 C): Days221320007
0 C (32 F): Ice days (max321919892
0 C (32 F): Frost days (min3482196839
-10 C (14 F): Days with min221519854
-20 C (-4 F): Days with min2219851
20 C (68 F): Tropical nights (min34101199886
25 C (77 F): Days with min222420118
10 mm (0.39 in): Days with 10 mm or more rain8958192335
25 mm (0.98 in): Days with 25 mm or more rain8925199015
50 mm (1.97 in): Days with 50 mm or more rain841319062
100 mm (3.94 in): Days with 100 mm or more rain20420111
10 cm (3.9 in): Days with 10 cm or more snowfall8219601
25 cm (9.8 in): Days with 25 cm or more snowfall1119881

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

  • Data for Clarendon 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). Threshold counts are computed by this site.

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