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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Morton Threshold Days by Year (USC00416074)

17 fixed thresholds counted per year at Morton (USC00416074): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Morton Thresholds

  • Morton: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 2004 with 31.
  • Morton: days with 25 mm (0.98 in) or more of precipitation in 73 years, most in 2015 with 10.
  • Morton: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 2024 with 148.
  • Morton: days with a maximum temperature at or above 35 C (95 F) in 60 years, most in 2011 with 97.
  • 17 fixed thresholds have at least one qualifying day at Morton.
60 years with a qualifying day
Days at or above 30 C (86 F) per year at Morton Days per year at Morton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 148 in 2024. 0501001501963: 1281964: 1251965: 1141966: 861967: 1181969: 921970: 1031971: 781972: 831973: 1021975: 861976: 811978: 1151979: 1091980: 1191981: 881982: 1061983: 1111984: 981985: 1061986: 911987: 821988: 901989: 1121990: 1021992: 1031993: 1051994: 1121995: 1051996: 1041997: 1041998: 1351999: 1092000: 1342001: 1302002: 1322003: 1222004: 972005: 1262006: 1232007: 1062008: 1112009: 1242010: 1262011: 1402012: 1352013: 1292014: 1072015: 1122016: 1132017: 1202018: 1212019: 1142020: 1462021: 1212022: 1412023: 1232024: 1482025: 1222026: 1461963197019781984199019972003200920152021
Days per year at Morton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 148 in 2024.
Days at or above 30 C (86 F) per year at Morton
YearDaysDecade average
1963128110.5
1964125110.5
1965114110.5
196686110.5
1967118110.5
196992110.5
197010394.6
19717894.6
19728394.6
197310294.6
19758694.6
19768194.6
197811594.6
197910994.6
1980119100.3
198188100.3
1982106100.3
1983111100.3
198498100.3
1985106100.3
198691100.3
198782100.3
198890100.3
1989112100.3
1990102108.8
1992103108.8
1993105108.8
1994112108.8
1995105108.8
1996104108.8
1997104108.8
1998135108.8
1999109108.8
2000134120.5
2001130120.5
2002132120.5
2003122120.5
200497120.5
2005126120.5
2006123120.5
2007106120.5
2008111120.5
2009124120.5
2010126121.7
2011140121.7
2012135121.7
2013129121.7
2014107121.7
2015112121.7
2016113121.7
2017120121.7
2018121121.7
2019114121.7
2020146135.3
2021121135.3
2022141135.3
2023123135.3
2024148135.3
2025122135.3
2026146135.3
First to last qualifying date each year at Morton For each year, a bar from the first to the last day at Morton meeting 30 C (86 F). 1963: 28 March 1963 to 10 October 19631964: 16 April 1964 to 18 October 19641965: 21 April 1965 to 16 October 19651966: 3 April 1966 to 13 October 19661967: 3 March 1967 to 15 October 19671969: 3 May 1969 to 10 October 19691970: 8 May 1970 to 25 September 19701971: 27 March 1971 to 28 September 19711972: 6 April 1972 to 18 October 19721973: 10 May 1973 to 25 October 19731975: 17 April 1975 to 22 October 19751976: 23 April 1976 to 12 October 19761978: 1 April 1978 to 13 October 19781979: 25 April 1979 to 27 October 19791980: 20 April 1980 to 15 October 19801981: 10 April 1981 to 11 October 19811982: 13 April 1982 to 6 October 19821983: 6 May 1983 to 8 October 19831984: 12 April 1984 to 25 September 19841985: 16 April 1985 to 8 October 19851986: 1 April 1986 to 28 September 19861987: 17 April 1987 to 30 October 19871988: 22 March 1988 to 18 October 19881989: 11 March 1989 to 16 October 19891990: 17 April 1990 to 17 October 19901992: 9 April 1992 to 15 October 19921993: 19 April 1993 to 6 October 19931994: 15 April 1994 to 6 October 19941995: 22 March 1995 to 19 October 19951996: 10 April 1996 to 14 October 19961997: 22 March 1997 to 4 October 19971998: 24 April 1998 to 16 October 19981999: 20 April 1999 to 16 October 19992000: 6 April 2000 to 6 October 20002001: 5 April 2001 to 1 November 20012002: 14 March 2002 to 12 October 20022003: 2 April 2003 to 30 October 20032004: 20 March 2004 to 21 September 20042005: 21 April 2005 to 9 November 20052006: 6 April 2006 to 9 November 20062007: 19 March 2007 to 21 October 20072008: 16 April 2008 to 11 October 20082009: 3 March 2009 to 20 October 20092010: 31 March 2010 to 31 October 20102011: 18 March 2011 to 26 October 20112012: 17 March 2012 to 24 October 20122013: 16 March 2013 to 11 October 20132014: 10 April 2014 to 27 October 20142015: 29 March 2015 to 16 October 20152016: 26 April 2016 to 30 October 20162017: 11 February 2017 to 15 October 20172018: 23 March 2018 to 6 October 20182019: 29 March 2019 to 28 September 20192020: 26 March 2020 to 6 November 20202021: 6 April 2021 to 27 October 20212022: 27 March 2022 to 29 September 20222023: 12 April 2023 to 22 October 20232024: 15 April 2024 to 29 October 20242025: 4 February 2025 to 5 November 20252026: 1 March 2026 to 14 October 202619631972198219901999200720152023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Morton meeting 30 C (86 F).
First to last qualifying date each year at Morton
YearFirst dateLast date
19631963-03-281963-10-10
19641964-04-161964-10-18
19651965-04-211965-10-16
19661966-04-031966-10-13
19671967-03-031967-10-15
19691969-05-031969-10-10
19701970-05-081970-09-25
19711971-03-271971-09-28
19721972-04-061972-10-18
19731973-05-101973-10-25
19751975-04-171975-10-22
19761976-04-231976-10-12
19781978-04-011978-10-13
19791979-04-251979-10-27
19801980-04-201980-10-15
19811981-04-101981-10-11
19821982-04-131982-10-06
19831983-05-061983-10-08
19841984-04-121984-09-25
19851985-04-161985-10-08
19861986-04-011986-09-28
19871987-04-171987-10-30
19881988-03-221988-10-18
19891989-03-111989-10-16
19901990-04-171990-10-17
19921992-04-091992-10-15
19931993-04-191993-10-06
19941994-04-151994-10-06
19951995-03-221995-10-19
19961996-04-101996-10-14
19971997-03-221997-10-04
19981998-04-241998-10-16
19991999-04-201999-10-16
20002000-04-062000-10-06
20012001-04-052001-11-01
20022002-03-142002-10-12
20032003-04-022003-10-30
20042004-03-202004-09-21
20052005-04-212005-11-09
20062006-04-062006-11-09
20072007-03-192007-10-21
20082008-04-162008-10-11
20092009-03-032009-10-20
20102010-03-312010-10-31
20112011-03-182011-10-26
20122012-03-172012-10-24
20132013-03-162013-10-11
20142014-04-102014-10-27
20152015-03-292015-10-16
20162016-04-262016-10-30
20172017-02-112017-10-15
20182018-03-232018-10-06
20192019-03-292019-09-28
20202020-03-262020-11-06
20212021-04-062021-10-27
20222022-03-272022-09-29
20232023-04-122023-10-22
20242024-04-152024-10-29
20252025-02-042025-11-05
20262026-03-012026-10-14

Every Fixed Threshold

Fixed thresholds at Morton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days601482024146
35 C (95 F): Days6097201188
40 C (104 F): Days331020237
90 F (32.2 C): Days601242011115
100 F (37.8 C): Days5951201134
110 F (43.3 C): Days5119901
0 C (32 F): Ice days (max581919824
0 C (32 F): Frost days (min60131197644
-10 C (14 F): Days with min582619667
-20 C (-4 F): Days with min7219632
20 C (68 F): Tropical nights (min5860201162
10 mm (0.39 in): Days with 10 mm or more rain7631200412
25 mm (0.98 in): Days with 25 mm or more rain731020154
50 mm (1.97 in): Days with 50 mm or more rain36319371
100 mm (3.94 in): Days with 100 mm or more rain3119601
10 cm (3.9 in): Days with 10 cm or more snowfall24319861
25 cm (9.8 in): Days with 25 cm or more snowfall1119871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

  • Data for Morton 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).