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Built 2026-10-19 (19 October 2026)

Perrine 4W Threshold Days by Year (USC00087020)

11 fixed thresholds counted per year at Perrine 4W (USC00087020): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Perrine 4W Thresholds

  • Perrine 4W: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 2020 with 67.
  • Perrine 4W: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1968 with 33.
  • Perrine 4W: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1960 with 14.
  • Perrine 4W: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2015 with 244.
  • 11 fixed thresholds have at least one qualifying day at Perrine 4W.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Perrine 4W Days per year at Perrine 4W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 244 in 2015. 01002003001990: 1641991: 1621992: 1551993: 1601994: 1711995: 1731996: 1471997: 1801998: 1661999: 1422000: 1432001: 1542002: 1692003: 1922004: 1342005: 1532006: 1742007: 1412008: 1312009: 1562010: 1642011: 1952012: 1622013: 1832014: 2022015: 2442016: 2042017: 1852018: 2012019: 1942020: 1942021: 1772022: 193199019941998200220062010201420182022
Days per year at Perrine 4W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 244 in 2015.
Days at or above 30 C (86 F) per year at Perrine 4W
YearDaysDecade average
1990164162
1991162162
1992155162
1993160162
1994171162
1995173162
1996147162
1997180162
1998166162
1999142162
2000143154.7
2001154154.7
2002169154.7
2003192154.7
2004134154.7
2005153154.7
2006174154.7
2007141154.7
2008131154.7
2009156154.7
2010164193.4
2011195193.4
2012162193.4
2013183193.4
2014202193.4
2015244193.4
2016204193.4
2017185193.4
2018201193.4
2019194193.4
2020194188
2021177188
2022193188
First to last qualifying date each year at Perrine 4W For each year, a bar from the first to the last day at Perrine 4W meeting 30 C (86 F). 1990: 23 January 1990 to 10 November 19901991: 26 January 1991 to 3 November 19911992: 20 February 1992 to 14 November 19921993: 31 March 1993 to 20 November 19931994: 20 March 1994 to 12 November 19941995: 29 March 1995 to 7 November 19951996: 30 March 1996 to 4 December 19961997: 13 March 1997 to 12 December 19971998: 20 February 1998 to 22 October 19981999: 11 April 1999 to 22 October 19992000: 31 March 2000 to 18 December 20002001: 18 February 2001 to 26 October 20012002: 26 January 2002 to 13 November 20022003: 11 February 2003 to 29 October 20032004: 9 April 2004 to 6 November 20042005: 18 March 2005 to 7 November 20052006: 24 February 2006 to 24 October 20062007: 4 March 2007 to 24 October 20072008: 24 February 2008 to 12 October 20082009: 5 April 2009 to 11 December 20092010: 10 April 2010 to 2 December 20102011: 11 February 2011 to 24 November 20112012: 20 February 2012 to 12 December 20122013: 9 February 2013 to 16 December 20132014: 6 February 2014 to 25 December 20142015: 6 January 2015 to 31 December 20152016: 1 January 2016 to 20 December 20162017: 4 January 2017 to 9 December 20172018: 6 February 2018 to 5 December 20182019: 19 February 2019 to 13 November 20192020: 5 January 2020 to 17 November 20202021: 15 February 2021 to 29 October 20212022: 20 February 2022 to 29 November 20221990199520002005201020152020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Perrine 4W meeting 30 C (86 F).
First to last qualifying date each year at Perrine 4W
YearFirst dateLast date
19901990-01-231990-11-10
19911991-01-261991-11-03
19921992-02-201992-11-14
19931993-03-311993-11-20
19941994-03-201994-11-12
19951995-03-291995-11-07
19961996-03-301996-12-04
19971997-03-131997-12-12
19981998-02-201998-10-22
19991999-04-111999-10-22
20002000-03-312000-12-18
20012001-02-182001-10-26
20022002-01-262002-11-13
20032003-02-112003-10-29
20042004-04-092004-11-06
20052005-03-182005-11-07
20062006-02-242006-10-24
20072007-03-042007-10-24
20082008-02-242008-10-12
20092009-04-052009-12-11
20102010-04-102010-12-02
20112011-02-112011-11-24
20122012-02-202012-12-12
20132013-02-092013-12-16
20142014-02-062014-12-25
20152015-01-062015-12-31
20162016-01-012016-12-20
20172017-01-042017-12-09
20182018-02-062018-12-05
20192019-02-192019-11-13
20202020-01-052020-11-17
20212021-02-152021-10-29
20222022-02-202022-11-29

Every Fixed Threshold

Fixed thresholds at Perrine 4W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days332442015193
35 C (95 F): Days242420151
90 F (32.2 C): Days33154201596
0 C (32 F): Frost days (min2320103
20 C (68 F): Tropical nights (min332562015219
25 C (77 F): Days with min2934201013
10 mm (0.39 in): Days with 10 mm or more rain466720203
25 mm (0.98 in): Days with 25 mm or more rain463319681
50 mm (1.97 in): Days with 50 mm or more rain451419601
100 mm (3.94 in): Days with 100 mm or more rain27319591
200 mm (7.87 in): Days with 200 mm or more rain5119651

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Perrine 4W 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 (2025-12-31).