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Built 2026-10-19 (19 October 2026)

Washington Sp Threshold Days by Year (USC00419491)

17 fixed thresholds counted per year at Washington Sp (USC00419491): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Washington Sp Thresholds

  • Washington Sp: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1983 with 45.
  • Washington Sp: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 1992 with 21.
  • Washington Sp: days with a maximum temperature at or above 30 C (86 F) in 65 years, most in 2011 with 203.
  • Washington Sp: days with a maximum temperature at or above 35 C (95 F) in 65 years, most in 2011 with 129.
  • 17 fixed thresholds have at least one qualifying day at Washington Sp.
65 years with a qualifying day
Days at or above 30 C (86 F) per year at Washington Sp Days per year at Washington Sp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 203 in 2011. 01002003001953: 1461954: 1591955: 1741956: 1681957: 1251958: 1351959: 1411960: 1391961: 1421962: 1611963: 1831964: 1391965: 1461967: 1611968: 961969: 1461970: 1371971: 1501972: 1571974: 1291975: 1321976: 1151977: 1571978: 1511979: 1261980: 1461981: 1441982: 1571983: 1321984: 1471985: 1471986: 1241987: 1251988: 1461989: 1271990: 1431991: 1281992: 1111993: 1151994: 1101995: 1271996: 1441997: 1281998: 1541999: 1652000: 1652001: 1412002: 1672003: 1512004: 1382005: 1742006: 1732007: 1542008: 1442009: 1492010: 1672011: 2032012: 1742013: 1502014: 1542015: 1492016: 1562017: 1582018: 1322025: 71953196019681976198319901997200420112018
Days per year at Washington Sp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 203 in 2011.
Days at or above 30 C (86 F) per year at Washington Sp
YearDaysDecade average
1953146149.7
1954159149.7
1955174149.7
1956168149.7
1957125149.7
1958135149.7
1959141149.7
1960139145.9
1961142145.9
1962161145.9
1963183145.9
1964139145.9
1965146145.9
1967161145.9
196896145.9
1969146145.9
1970137139.3
1971150139.3
1972157139.3
1974129139.3
1975132139.3
1976115139.3
1977157139.3
1978151139.3
1979126139.3
1980146139.5
1981144139.5
1982157139.5
1983132139.5
1984147139.5
1985147139.5
1986124139.5
1987125139.5
1988146139.5
1989127139.5
1990143132.5
1991128132.5
1992111132.5
1993115132.5
1994110132.5
1995127132.5
1996144132.5
1997128132.5
1998154132.5
1999165132.5
2000165155.6
2001141155.6
2002167155.6
2003151155.6
2004138155.6
2005174155.6
2006173155.6
2007154155.6
2008144155.6
2009149155.6
2010167160.3
2011203160.3
2012174160.3
2013150160.3
2014154160.3
2015149160.3
2016156160.3
2017158160.3
2018132160.3
202577
First to last qualifying date each year at Washington Sp For each year, a bar from the first to the last day at Washington Sp meeting 30 C (86 F). 1953: 18 March 1953 to 22 October 19531954: 25 March 1954 to 26 October 19541955: 5 March 1955 to 23 November 19551956: 3 March 1956 to 30 October 19561957: 11 May 1957 to 3 November 19571958: 24 April 1958 to 26 October 19581959: 29 April 1959 to 27 October 19591960: 13 January 1960 to 16 October 19601961: 28 March 1961 to 13 November 19611962: 29 April 1962 to 24 October 19621963: 19 March 1963 to 6 November 19631964: 19 April 1964 to 17 November 19641965: 9 April 1965 to 27 November 19651967: 5 March 1967 to 26 November 19671968: 17 May 1968 to 1 November 19681969: 20 May 1969 to 12 November 19691970: 17 April 1970 to 28 October 19701971: 31 January 1971 to 19 October 19711972: 18 March 1972 to 31 October 19721974: 9 March 1974 to 30 October 19741975: 13 March 1975 to 8 November 19751976: 30 March 1976 to 5 October 19761977: 4 April 1977 to 21 November 19771978: 5 April 1978 to 3 November 19781979: 17 April 1979 to 22 October 19791980: 23 February 1980 to 28 October 19801981: 10 April 1981 to 18 October 19811982: 20 March 1982 to 20 November 19821983: 29 April 1983 to 21 October 19831984: 28 March 1984 to 2 November 19841985: 16 April 1985 to 19 October 19851986: 19 February 1986 to 5 October 19861987: 12 April 1987 to 27 October 19871988: 24 April 1988 to 15 November 19881989: 31 March 1989 to 16 November 19891990: 30 April 1990 to 17 October 19901991: 6 March 1991 to 30 October 19911992: 13 May 1992 to 1 November 19921993: 16 May 1993 to 19 October 19931994: 28 April 1994 to 8 October 19941995: 29 April 1995 to 28 October 19951996: 21 February 1996 to 28 October 19961997: 29 March 1997 to 1 November 19971998: 6 March 1998 to 17 October 19981999: 7 April 1999 to 23 November 19992000: 10 March 2000 to 3 November 20002001: 14 April 2001 to 4 November 20012002: 16 March 2002 to 11 November 20022003: 6 April 2003 to 13 November 20032004: 23 April 2004 to 1 November 20042005: 14 March 2005 to 4 December 20052006: 11 March 2006 to 11 November 20062007: 29 April 2007 to 16 November 20072008: 15 March 2008 to 14 October 20082009: 28 February 2009 to 17 October 20092010: 4 April 2010 to 2 November 20102011: 19 March 2011 to 21 November 20112012: 1 April 2012 to 3 December 20122013: 19 March 2013 to 18 November 20132014: 26 April 2014 to 1 November 20142015: 8 April 2015 to 7 November 20152016: 4 March 2016 to 17 November 20162017: 8 February 2017 to 18 November 20172018: 3 May 2018 to 8 November 20182025: 5 June 2025 to 3 July 202519531962197219821991200020092018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Washington Sp meeting 30 C (86 F).
First to last qualifying date each year at Washington Sp
YearFirst dateLast date
19531953-03-181953-10-22
19541954-03-251954-10-26
19551955-03-051955-11-23
19561956-03-031956-10-30
19571957-05-111957-11-03
19581958-04-241958-10-26
19591959-04-291959-10-27
19601960-01-131960-10-16
19611961-03-281961-11-13
19621962-04-291962-10-24
19631963-03-191963-11-06
19641964-04-191964-11-17
19651965-04-091965-11-27
19671967-03-051967-11-26
19681968-05-171968-11-01
19691969-05-201969-11-12
19701970-04-171970-10-28
19711971-01-311971-10-19
19721972-03-181972-10-31
19741974-03-091974-10-30
19751975-03-131975-11-08
19761976-03-301976-10-05
19771977-04-041977-11-21
19781978-04-051978-11-03
19791979-04-171979-10-22
19801980-02-231980-10-28
19811981-04-101981-10-18
19821982-03-201982-11-20
19831983-04-291983-10-21
19841984-03-281984-11-02
19851985-04-161985-10-19
19861986-02-191986-10-05
19871987-04-121987-10-27
19881988-04-241988-11-15
19891989-03-311989-11-16
19901990-04-301990-10-17
19911991-03-061991-10-30
19921992-05-131992-11-01
19931993-05-161993-10-19
19941994-04-281994-10-08
19951995-04-291995-10-28
19961996-02-211996-10-28
19971997-03-291997-11-01
19981998-03-061998-10-17
19991999-04-071999-11-23
20002000-03-102000-11-03
20012001-04-142001-11-04
20022002-03-162002-11-11
20032003-04-062003-11-13
20042004-04-232004-11-01
20052005-03-142005-12-04
20062006-03-112006-11-11
20072007-04-292007-11-16
20082008-03-152008-10-14
20092009-02-282009-10-17
20102010-04-042010-11-02
20112011-03-192011-11-21
20122012-04-012012-12-03
20132013-03-192013-11-18
20142014-04-262014-11-01
20152015-04-082015-11-07
20162016-03-042016-11-17
20172017-02-082017-11-18
20182018-05-032018-11-08
20252025-06-052025-07-03

Every Fixed Threshold

Fixed thresholds at Washington Sp
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6520320117
35 C (95 F): Days6512920111
40 C (104 F): Days294320111
45 C (113 F): Days1420094
90 F (32.2 C): Days6515920117
100 F (37.8 C): Days5480201117
110 F (43.3 C): Days5520092
0 C (32 F): Ice days (max23719892
0 C (32 F): Frost days (min6149197815
-10 C (14 F): Days with min8519893
20 C (68 F): Tropical nights (min6214819917
25 C (77 F): Days with min462120114
10 mm (0.39 in): Days with 10 mm or more rain684519831
25 mm (0.98 in): Days with 25 mm or more rain6721199213
50 mm (1.97 in): Days with 50 mm or more rain64920153
100 mm (3.94 in): Days with 100 mm or more rain26319682
200 mm (7.87 in): Days with 200 mm or more rain3119701

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

  • Data for Washington 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 (2025-12-31).