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Built 2026-10-17 (17 October 2026)

Slidell Threshold Days by Year

15 fixed thresholds counted per year at Slidell (USC00168539): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Slidell Thresholds

  • Slidell: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1991 with 58.
  • Slidell: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1991 with 34.
  • Slidell: days with 50 mm (1.97 in) or more of precipitation in 70 years, most in 1991 with 16.
  • Slidell: days with a maximum temperature at or above 30 C (86 F) in 69 years, most in 1962 with 160.
  • 15 fixed thresholds have at least one qualifying day at Slidell.
69 years with a qualifying day
Days at or above 30 C (86 F) per year at Slidell Days per year at Slidell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 160 in 1962. 0501001502001956: 1231957: 1221958: 1191959: 1271960: 1351961: 1191962: 1601963: 1511964: 1361965: 1361966: 1121967: 1241968: 1431969: 1341970: 991971: 1321972: 1531973: 1281974: 1101975: 951976: 1101977: 1221978: 1271979: 1301980: 1331981: 1401982: 1401983: 1111984: 1251985: 1321986: 1341987: 1371988: 1131989: 1271990: 1321991: 1181992: 1131993: 1281994: 1081995: 1291996: 1191997: 1141998: 1351999: 1142000: 1172001: 1222002: 1322003: 1272004: 1332005: 1192006: 1292007: 1242008: 1092010: 1212011: 1112012: 1062013: 1102014: 1072015: 1172016: 1242017: 1052018: 1442019: 1322020: 1022022: 1432023: 1322024: 1282025: 1412026: 1301956196319701977198419911998200520132020
Days per year at Slidell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 160 in 1962.
Days at or above 30 C (86 F) per year at Slidell
YearDaysDecade average
1956123122.8
1957122122.8
1958119122.8
1959127122.8
1960135135
1961119135
1962160135
1963151135
1964136135
1965136135
1966112135
1967124135
1968143135
1969134135
197099120.6
1971132120.6
1972153120.6
1973128120.6
1974110120.6
197595120.6
1976110120.6
1977122120.6
1978127120.6
1979130120.6
1980133129.2
1981140129.2
1982140129.2
1983111129.2
1984125129.2
1985132129.2
1986134129.2
1987137129.2
1988113129.2
1989127129.2
1990132121
1991118121
1992113121
1993128121
1994108121
1995129121
1996119121
1997114121
1998135121
1999114121
2000117123.6
2001122123.6
2002132123.6
2003127123.6
2004133123.6
2005119123.6
2006129123.6
2007124123.6
2008109123.6
2010121117.7
2011111117.7
2012106117.7
2013110117.7
2014107117.7
2015117117.7
2016124117.7
2017105117.7
2018144117.7
2019132117.7
2020102129.3
2022143129.3
2023132129.3
2024128129.3
2025141129.3
2026130129.3
First to last qualifying date each year at Slidell For each year, a bar from the first to the last day at Slidell meeting 30 C (86 F). 1956: 4 April 1956 to 8 October 19561957: 6 February 1957 to 23 September 19571958: 23 April 1958 to 10 October 19581959: 19 April 1959 to 13 October 19591960: 28 April 1960 to 17 October 19601961: 27 April 1961 to 5 December 19611962: 11 April 1962 to 20 October 19621963: 17 March 1963 to 28 October 19631964: 24 April 1964 to 24 October 19641965: 25 March 1965 to 20 November 19651966: 13 April 1966 to 15 October 19661967: 8 April 1967 to 23 October 19671968: 22 April 1968 to 15 October 19681969: 22 April 1969 to 19 October 19691970: 17 April 1970 to 5 October 19701971: 22 April 1971 to 2 November 19711972: 12 April 1972 to 18 October 19721973: 11 May 1973 to 15 October 19731974: 4 May 1974 to 28 October 19741975: 22 May 1975 to 12 October 19751976: 7 May 1976 to 6 October 19761977: 8 May 1977 to 9 October 19771978: 2 May 1978 to 14 October 19781979: 8 May 1979 to 22 October 19791980: 23 April 1980 to 18 October 19801981: 14 April 1981 to 16 October 19811982: 17 March 1982 to 11 October 19821983: 19 May 1983 to 21 October 19831984: 28 April 1984 to 1 November 19841985: 23 April 1985 to 23 October 19851986: 29 April 1986 to 6 October 19861987: 18 April 1987 to 11 October 19871988: 21 April 1988 to 30 September 19881989: 4 April 1989 to 7 October 19891990: 30 April 1990 to 17 October 19901991: 10 May 1991 to 22 October 19911992: 13 April 1992 to 26 October 19921993: 6 May 1993 to 20 October 19931994: 10 May 1994 to 1 October 19941995: 6 May 1995 to 12 October 19951996: 5 May 1996 to 28 September 19961997: 21 May 1997 to 14 October 19971998: 8 May 1998 to 21 October 19981999: 25 April 1999 to 4 October 19992000: 11 May 2000 to 7 October 20002001: 14 April 2001 to 26 October 20012002: 28 April 2002 to 8 October 20022003: 2 May 2003 to 28 September 20032004: 9 May 2004 to 31 October 20042005: 13 May 2005 to 17 October 20052006: 18 April 2006 to 6 October 20062007: 1 May 2007 to 19 October 20072008: 10 May 2008 to 1 October 20082010: 5 May 2010 to 28 October 20102011: 9 May 2011 to 17 October 20112012: 5 May 2012 to 7 October 20122013: 19 May 2013 to 13 October 20132014: 26 May 2014 to 14 October 20142015: 17 May 2015 to 17 October 20152016: 14 May 2016 to 21 October 20162017: 20 May 2017 to 16 October 20172018: 8 May 2018 to 17 October 20182019: 21 May 2019 to 11 October 20192020: 6 May 2020 to 22 October 20202022: 7 April 2022 to 9 November 20222023: 2 April 2023 to 6 October 20232024: 1 May 2024 to 7 November 20242025: 7 April 2025 to 20 October 20252026: 1 May 2026 to 14 October 202619561965197419831992200120112020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Slidell meeting 30 C (86 F).
First to last qualifying date each year at Slidell
YearFirst dateLast date
19561956-04-041956-10-08
19571957-02-061957-09-23
19581958-04-231958-10-10
19591959-04-191959-10-13
19601960-04-281960-10-17
19611961-04-271961-12-05
19621962-04-111962-10-20
19631963-03-171963-10-28
19641964-04-241964-10-24
19651965-03-251965-11-20
19661966-04-131966-10-15
19671967-04-081967-10-23
19681968-04-221968-10-15
19691969-04-221969-10-19
19701970-04-171970-10-05
19711971-04-221971-11-02
19721972-04-121972-10-18
19731973-05-111973-10-15
19741974-05-041974-10-28
19751975-05-221975-10-12
19761976-05-071976-10-06
19771977-05-081977-10-09
19781978-05-021978-10-14
19791979-05-081979-10-22
19801980-04-231980-10-18
19811981-04-141981-10-16
19821982-03-171982-10-11
19831983-05-191983-10-21
19841984-04-281984-11-01
19851985-04-231985-10-23
19861986-04-291986-10-06
19871987-04-181987-10-11
19881988-04-211988-09-30
19891989-04-041989-10-07
19901990-04-301990-10-17
19911991-05-101991-10-22
19921992-04-131992-10-26
19931993-05-061993-10-20
19941994-05-101994-10-01
19951995-05-061995-10-12
19961996-05-051996-09-28
19971997-05-211997-10-14
19981998-05-081998-10-21
19991999-04-251999-10-04
20002000-05-112000-10-07
20012001-04-142001-10-26
20022002-04-282002-10-08
20032003-05-022003-09-28
20042004-05-092004-10-31
20052005-05-132005-10-17
20062006-04-182006-10-06
20072007-05-012007-10-19
20082008-05-102008-10-01
20102010-05-052010-10-28
20112011-05-092011-10-17
20122012-05-052012-10-07
20132013-05-192013-10-13
20142014-05-262014-10-14
20152015-05-172015-10-17
20162016-05-142016-10-21
20172017-05-202017-10-16
20182018-05-082018-10-17
20192019-05-212019-10-11
20202020-05-062020-10-22
20222022-04-072022-11-09
20232023-04-022023-10-06
20242024-05-012024-11-07
20252025-04-072025-10-20
20262026-05-012026-10-14

Every Fixed Threshold

Fixed thresholds at Slidell
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days691601962130
35 C (95 F): Days6242198022
40 C (104 F): Days1119641
90 F (32.2 C): Days69114198694
100 F (37.8 C): Days7319803
0 C (32 F): Ice days (max6219891
0 C (32 F): Frost days (min6845197814
-10 C (14 F): Days with min7319623
20 C (68 F): Tropical nights (min681702024159
25 C (77 F): Days with min6755202348
10 mm (0.39 in): Days with 10 mm or more rain7058199135
25 mm (0.98 in): Days with 25 mm or more rain7034199119
50 mm (1.97 in): Days with 50 mm or more rain701619917
100 mm (3.94 in): Days with 100 mm or more rain41319563
200 mm (7.87 in): Days with 200 mm or more rain5219952

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Slidell 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).