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Built 2026-10-19 (19 October 2026)

Center Threshold Days by Year (USC00411578)

17 fixed thresholds counted per year at Center (USC00411578): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Center Thresholds

  • Center: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 2004 with 60.
  • Center: days with 25 mm (0.98 in) or more of precipitation in 85 years, most in 2024 with 29.
  • Center: days with 50 mm (1.97 in) or more of precipitation in 83 years, most in 2018 with 12.
  • Center: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 1948 with 173.
  • 17 fixed thresholds have at least one qualifying day at Center.
77 years with a qualifying day
Days at or above 30 C (86 F) per year at Center Days per year at Center with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 173 in 1948. 0501001502001941: 1721942: 1331944: 1551945: 1371946: 1201948: 1731949: 1521950: 1301951: 1351952: 1461953: 1531954: 1381955: 1631956: 1561957: 1181958: 1301959: 1421960: 1371961: 1101962: 1441963: 1731964: 1251965: 1281966: 1161967: 1281968: 1041969: 1381970: 1161971: 1301972: 1431973: 1301974: 1071975: 1321976: 1111977: 1341978: 1291979: 1211980: 1381981: 1241982: 1371983: 1031984: 1311985: 1301986: 1341987: 1301988: 1381989: 1181990: 1291991: 1241992: 1131993: 1201994: 1161995: 1291996: 1251997: 1091998: 1371999: 1402000: 1492001: 1142002: 1332003: 1292004: 1302005: 1462006: 1462007: 1372008: 1282009: 1292010: 1612011: 1632012: 1432013: 1332014: 1222015: 1342016: 1482017: 1342018: 1462019: 1491941195119591967197519831991199920072015
Days per year at Center with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 173 in 1948.
Days at or above 30 C (86 F) per year at Center
YearDaysDecade average
1941172148.9
1942133148.9
1944155148.9
1945137148.9
1946120148.9
1948173148.9
1949152148.9
1950130141.1
1951135141.1
1952146141.1
1953153141.1
1954138141.1
1955163141.1
1956156141.1
1957118141.1
1958130141.1
1959142141.1
1960137130.3
1961110130.3
1962144130.3
1963173130.3
1964125130.3
1965128130.3
1966116130.3
1967128130.3
1968104130.3
1969138130.3
1970116125.3
1971130125.3
1972143125.3
1973130125.3
1974107125.3
1975132125.3
1976111125.3
1977134125.3
1978129125.3
1979121125.3
1980138128.3
1981124128.3
1982137128.3
1983103128.3
1984131128.3
1985130128.3
1986134128.3
1987130128.3
1988138128.3
1989118128.3
1990129124.2
1991124124.2
1992113124.2
1993120124.2
1994116124.2
1995129124.2
1996125124.2
1997109124.2
1998137124.2
1999140124.2
2000149134.1
2001114134.1
2002133134.1
2003129134.1
2004130134.1
2005146134.1
2006146134.1
2007137134.1
2008128134.1
2009129134.1
2010161143.3
2011163143.3
2012143143.3
2013133143.3
2014122143.3
2015134143.3
2016148143.3
2017134143.3
2018146143.3
2019149143.3
First to last qualifying date each year at Center For each year, a bar from the first to the last day at Center meeting 30 C (86 F). 1941: 1 April 1941 to 16 November 19411942: 13 March 1942 to 14 November 19421944: 11 April 1944 to 11 November 19441945: 15 March 1945 to 2 November 19451946: 30 March 1946 to 22 October 19461948: 6 April 1948 to 5 November 19481949: 7 April 1949 to 23 October 19491950: 19 March 1950 to 2 November 19501951: 22 April 1951 to 31 October 19511952: 1 May 1952 to 3 November 19521953: 19 March 1953 to 23 October 19531954: 12 March 1954 to 15 October 19541955: 11 March 1955 to 15 November 19551956: 7 May 1956 to 25 October 19561957: 26 April 1957 to 9 October 19571958: 4 April 1958 to 20 October 19581959: 29 April 1959 to 13 October 19591960: 30 March 1960 to 25 October 19601961: 28 April 1961 to 14 October 19611962: 29 March 1962 to 20 October 19621963: 13 March 1963 to 8 November 19631964: 7 April 1964 to 19 October 19641965: 4 April 1965 to 18 October 19651966: 1 April 1966 to 14 October 19661967: 12 March 1967 to 22 October 19671968: 15 April 1968 to 17 October 19681969: 21 May 1969 to 8 November 19691970: 23 April 1970 to 6 October 19701971: 23 March 1971 to 3 November 19711972: 8 April 1972 to 1 November 19721973: 10 May 1973 to 11 October 19731974: 1 April 1974 to 29 September 19741975: 25 April 1975 to 30 October 19751976: 23 April 1976 to 5 October 19761977: 7 May 1977 to 30 October 19771978: 24 April 1978 to 22 October 19781979: 17 April 1979 to 22 October 19791980: 8 April 1980 to 17 October 19801981: 31 March 1981 to 18 October 19811982: 14 March 1982 to 9 October 19821983: 8 May 1983 to 6 October 19831984: 28 March 1984 to 2 November 19841985: 1 May 1985 to 19 October 19851986: 19 February 1986 to 6 October 19861987: 18 April 1987 to 10 October 19871988: 23 April 1988 to 24 October 19881989: 15 March 1989 to 9 November 19891990: 30 April 1990 to 16 October 19901991: 7 March 1991 to 29 October 19911992: 25 April 1992 to 1 November 19921993: 5 May 1993 to 20 October 19931994: 28 April 1994 to 8 October 19941995: 23 March 1995 to 28 October 19951996: 23 February 1996 to 18 October 19961997: 29 March 1997 to 9 October 19971998: 8 May 1998 to 17 October 19981999: 10 April 1999 to 23 October 19992000: 10 March 2000 to 1 November 20002001: 6 April 2001 to 25 October 20012002: 18 April 2002 to 7 October 20022003: 19 April 2003 to 6 November 20032004: 24 April 2004 to 1 November 20042005: 14 March 2005 to 7 November 20052006: 12 March 2006 to 19 October 20062007: 30 April 2007 to 22 October 20072008: 2 April 2008 to 15 October 20082009: 22 April 2009 to 16 October 20092010: 2 May 2010 to 2 November 20102011: 27 March 2011 to 27 October 20112012: 24 February 2012 to 23 October 20122013: 16 April 2013 to 12 October 20132014: 27 April 2014 to 11 October 20142015: 26 April 2015 to 22 October 20152016: 15 March 2016 to 4 November 20162017: 29 March 2017 to 7 November 20172018: 4 May 2018 to 15 October 20182019: 10 April 2019 to 21 October 201919411953196319731983199320032013JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Center meeting 30 C (86 F).
First to last qualifying date each year at Center
YearFirst dateLast date
19411941-04-011941-11-16
19421942-03-131942-11-14
19441944-04-111944-11-11
19451945-03-151945-11-02
19461946-03-301946-10-22
19481948-04-061948-11-05
19491949-04-071949-10-23
19501950-03-191950-11-02
19511951-04-221951-10-31
19521952-05-011952-11-03
19531953-03-191953-10-23
19541954-03-121954-10-15
19551955-03-111955-11-15
19561956-05-071956-10-25
19571957-04-261957-10-09
19581958-04-041958-10-20
19591959-04-291959-10-13
19601960-03-301960-10-25
19611961-04-281961-10-14
19621962-03-291962-10-20
19631963-03-131963-11-08
19641964-04-071964-10-19
19651965-04-041965-10-18
19661966-04-011966-10-14
19671967-03-121967-10-22
19681968-04-151968-10-17
19691969-05-211969-11-08
19701970-04-231970-10-06
19711971-03-231971-11-03
19721972-04-081972-11-01
19731973-05-101973-10-11
19741974-04-011974-09-29
19751975-04-251975-10-30
19761976-04-231976-10-05
19771977-05-071977-10-30
19781978-04-241978-10-22
19791979-04-171979-10-22
19801980-04-081980-10-17
19811981-03-311981-10-18
19821982-03-141982-10-09
19831983-05-081983-10-06
19841984-03-281984-11-02
19851985-05-011985-10-19
19861986-02-191986-10-06
19871987-04-181987-10-10
19881988-04-231988-10-24
19891989-03-151989-11-09
19901990-04-301990-10-16
19911991-03-071991-10-29
19921992-04-251992-11-01
19931993-05-051993-10-20
19941994-04-281994-10-08
19951995-03-231995-10-28
19961996-02-231996-10-18
19971997-03-291997-10-09
19981998-05-081998-10-17
19991999-04-101999-10-23
20002000-03-102000-11-01
20012001-04-062001-10-25
20022002-04-182002-10-07
20032003-04-192003-11-06
20042004-04-242004-11-01
20052005-03-142005-11-07
20062006-03-122006-10-19
20072007-04-302007-10-22
20082008-04-022008-10-15
20092009-04-222009-10-16
20102010-05-022010-11-02
20112011-03-272011-10-27
20122012-02-242012-10-23
20132013-04-162013-10-12
20142014-04-272014-10-11
20152015-04-262015-10-22
20162016-03-152016-11-04
20172017-03-292017-11-07
20182018-05-042018-10-15
20192019-04-102019-10-21

Every Fixed Threshold

Fixed thresholds at Center
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days771731948149
35 C (95 F): Days77104201154
40 C (104 F): Days323720112
90 F (32.2 C): Days771541941118
100 F (37.8 C): Days557520115
110 F (43.3 C): Days4520115
0 C (32 F): Ice days (max37919892
0 C (32 F): Frost days (min7484197847
-10 C (14 F): Days with min27719773
20 C (68 F): Tropical nights (min741331998117
25 C (77 F): Days with min4039201112
10 mm (0.39 in): Days with 10 mm or more rain8560200426
25 mm (0.98 in): Days with 25 mm or more rain852920249
50 mm (1.97 in): Days with 50 mm or more rain831220183
100 mm (3.94 in): Days with 100 mm or more rain34419533
200 mm (7.87 in): Days with 200 mm or more rain4119781
10 cm (3.9 in): Days with 10 cm or more snowfall9119441

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

  • Data for Center 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).