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Built 2026-10-19 (19 October 2026)

Muscle Shoals AP Threshold Days by Year (USW00013896)

16 fixed thresholds counted per year at Muscle Shoals AP (USW00013896): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Muscle Shoals AP Thresholds

  • Muscle Shoals AP: days with a maximum temperature at or above 30 C (86 F) in 83 years, most in 2019 with 141.
  • Muscle Shoals AP: days with a maximum temperature at or above 90 F (32.2 C) in 83 years, most in 2019 with 120.
  • Muscle Shoals AP: nights with a minimum temperature at or below 0 C (32 F) in 83 years, most in 1960 with 87.
  • Muscle Shoals AP: nights with a minimum temperature at or above 20 C (68 F) in 83 years, most in 2018 with 116.
  • 16 fixed thresholds have at least one qualifying day at Muscle Shoals AP.
83 years with a qualifying day
Days at or above 30 C (86 F) per year at Muscle Shoals AP Days per year at Muscle Shoals AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 141 in 2019. 0501001501941: 1251942: 901943: 1091944: 1091945: 951946: 671947: 921948: 971949: 871950: 631951: 1071952: 991953: 1111954: 1211955: 1111956: 971957: 851958: 961959: 991960: 1011961: 781962: 1181963: 1131964: 1061965: 1101966: 1021967: 781968: 981969: 1091970: 1101971: 861972: 921973: 921974: 601975: 871976: 581977: 1111978: 1101979: 561980: 1061981: 871982: 861983: 871984: 851985: 861986: 1181987: 1281988: 1021989: 851990: 1111991: 1081992: 731993: 1011994: 831998: 1181999: 1032000: 1122001: 732002: 1122003: 682004: 782005: 1182006: 1162007: 1402008: 1102009: 872010: 1332011: 1172012: 1222013: 1052014: 1152015: 1012016: 1402017: 1062018: 1392019: 1412020: 1082021: 1052022: 1132023: 1192024: 1242025: 1282026: 1281941195019591968197719861998200720162025
Days per year at Muscle Shoals AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 141 in 2019.
Days at or above 30 C (86 F) per year at Muscle Shoals AP
YearDaysDecade average
194112596.8
19429096.8
194310996.8
194410996.8
19459596.8
19466796.8
19479296.8
19489796.8
19498796.8
19506398.9
195110798.9
19529998.9
195311198.9
195412198.9
195511198.9
19569798.9
19578598.9
19589698.9
19599998.9
1960101101.3
196178101.3
1962118101.3
1963113101.3
1964106101.3
1965110101.3
1966102101.3
196778101.3
196898101.3
1969109101.3
197011086.2
19718686.2
19729286.2
19739286.2
19746086.2
19758786.2
19765886.2
197711186.2
197811086.2
19795686.2
198010697
19818797
19828697
19838797
19848597
19858697
198611897
198712897
198810297
19898597
199011199.6
199110899.6
19927399.6
199310199.6
19948399.6
199811899.6
199910399.6
2000112101.4
200173101.4
2002112101.4
200368101.4
200478101.4
2005118101.4
2006116101.4
2007140101.4
2008110101.4
200987101.4
2010133121.9
2011117121.9
2012122121.9
2013105121.9
2014115121.9
2015101121.9
2016140121.9
2017106121.9
2018139121.9
2019141121.9
2020108117.9
2021105117.9
2022113117.9
2023119117.9
2024124117.9
2025128117.9
2026128117.9
First to last qualifying date each year at Muscle Shoals AP For each year, a bar from the first to the last day at Muscle Shoals AP meeting 30 C (86 F). 1941: 12 April 1941 to 22 October 19411942: 27 April 1942 to 19 September 19421943: 29 April 1943 to 15 September 19431944: 12 May 1944 to 7 October 19441945: 14 April 1945 to 1 October 19451946: 30 May 1946 to 10 September 19461947: 4 May 1947 to 15 October 19471948: 7 April 1948 to 22 September 19481949: 4 May 1949 to 7 October 19491950: 10 May 1950 to 16 October 19501951: 30 April 1951 to 6 October 19511952: 28 April 1952 to 1 October 19521953: 21 May 1953 to 21 October 19531954: 14 April 1954 to 11 October 19541955: 16 April 1955 to 6 October 19551956: 11 May 1956 to 30 September 19561957: 28 April 1957 to 21 September 19571958: 23 April 1958 to 26 September 19581959: 30 April 1959 to 5 October 19591960: 23 April 1960 to 22 September 19601961: 5 May 1961 to 30 October 19611962: 27 April 1962 to 11 October 19621963: 31 March 1963 to 27 October 19631964: 20 April 1964 to 27 September 19641965: 22 April 1965 to 17 October 19651966: 21 March 1966 to 27 September 19661967: 12 March 1967 to 15 October 19671968: 15 May 1968 to 2 October 19681969: 5 May 1969 to 13 October 19691970: 29 April 1970 to 2 October 19701971: 19 April 1971 to 4 October 19711972: 14 April 1972 to 29 September 19721973: 10 May 1973 to 11 October 19731974: 18 May 1974 to 20 September 19741975: 20 May 1975 to 15 October 19751976: 9 June 1976 to 26 September 19761977: 16 April 1977 to 1 October 19771978: 8 April 1978 to 12 October 19781979: 7 June 1979 to 12 September 19791980: 28 May 1980 to 9 October 19801981: 28 April 1981 to 6 October 19811982: 13 May 1982 to 6 October 19821983: 13 May 1983 to 3 October 19831984: 25 May 1984 to 25 September 19841985: 12 May 1985 to 22 September 19851986: 25 April 1986 to 4 October 19861987: 20 April 1987 to 28 September 19871988: 5 April 1988 to 23 September 19881989: 22 April 1989 to 14 September 19891990: 3 May 1990 to 7 October 19901991: 14 May 1991 to 18 September 19911992: 24 April 1992 to 21 September 19921993: 6 May 1993 to 25 September 19931994: 21 April 1994 to 1 October 19941998: 13 May 1998 to 5 October 19981999: 5 April 1999 to 3 October 19992000: 5 May 2000 to 31 October 20002001: 10 April 2001 to 23 September 20012002: 17 April 2002 to 6 October 20022003: 15 April 2003 to 26 September 20032004: 20 March 2004 to 27 October 20042005: 21 April 2005 to 19 October 20052006: 14 April 2006 to 5 October 20062007: 24 March 2007 to 17 October 20072008: 20 May 2008 to 6 October 20082009: 23 April 2009 to 9 October 20092010: 5 April 2010 to 11 October 20102011: 3 April 2011 to 17 October 20112012: 20 March 2012 to 28 September 20122013: 10 April 2013 to 12 October 20132014: 4 May 2014 to 27 October 20142015: 7 May 2015 to 15 October 20152016: 15 March 2016 to 1 November 20162017: 13 April 2017 to 15 October 20172018: 3 May 2018 to 9 October 20182019: 10 April 2019 to 9 October 20192020: 26 March 2020 to 22 October 20202021: 3 May 2021 to 15 October 20212022: 2 May 2022 to 24 September 20222023: 23 February 2023 to 28 October 20232024: 26 April 2024 to 25 October 20242025: 2 April 2025 to 18 October 20252026: 21 March 2026 to 14 October 202619411952196319741985199920102021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Muscle Shoals AP meeting 30 C (86 F).
First to last qualifying date each year at Muscle Shoals AP
YearFirst dateLast date
19411941-04-121941-10-22
19421942-04-271942-09-19
19431943-04-291943-09-15
19441944-05-121944-10-07
19451945-04-141945-10-01
19461946-05-301946-09-10
19471947-05-041947-10-15
19481948-04-071948-09-22
19491949-05-041949-10-07
19501950-05-101950-10-16
19511951-04-301951-10-06
19521952-04-281952-10-01
19531953-05-211953-10-21
19541954-04-141954-10-11
19551955-04-161955-10-06
19561956-05-111956-09-30
19571957-04-281957-09-21
19581958-04-231958-09-26
19591959-04-301959-10-05
19601960-04-231960-09-22
19611961-05-051961-10-30
19621962-04-271962-10-11
19631963-03-311963-10-27
19641964-04-201964-09-27
19651965-04-221965-10-17
19661966-03-211966-09-27
19671967-03-121967-10-15
19681968-05-151968-10-02
19691969-05-051969-10-13
19701970-04-291970-10-02
19711971-04-191971-10-04
19721972-04-141972-09-29
19731973-05-101973-10-11
19741974-05-181974-09-20
19751975-05-201975-10-15
19761976-06-091976-09-26
19771977-04-161977-10-01
19781978-04-081978-10-12
19791979-06-071979-09-12
19801980-05-281980-10-09
19811981-04-281981-10-06
19821982-05-131982-10-06
19831983-05-131983-10-03
19841984-05-251984-09-25
19851985-05-121985-09-22
19861986-04-251986-10-04
19871987-04-201987-09-28
19881988-04-051988-09-23
19891989-04-221989-09-14
19901990-05-031990-10-07
19911991-05-141991-09-18
19921992-04-241992-09-21
19931993-05-061993-09-25
19941994-04-211994-10-01
19981998-05-131998-10-05
19991999-04-051999-10-03
20002000-05-052000-10-31
20012001-04-102001-09-23
20022002-04-172002-10-06
20032003-04-152003-09-26
20042004-03-202004-10-27
20052005-04-212005-10-19
20062006-04-142006-10-05
20072007-03-242007-10-17
20082008-05-202008-10-06
20092009-04-232009-10-09
20102010-04-052010-10-11
20112011-04-032011-10-17
20122012-03-202012-09-28
20132013-04-102013-10-12
20142014-05-042014-10-27
20152015-05-072015-10-15
20162016-03-152016-11-01
20172017-04-132017-10-15
20182018-05-032018-10-09
20192019-04-102019-10-09
20202020-03-262020-10-22
20212021-05-032021-10-15
20222022-05-022022-09-24
20232023-02-232023-10-28
20242024-04-262024-10-25
20252025-04-022025-10-18
20262026-03-212026-10-14

Every Fixed Threshold

Fixed thresholds at Muscle Shoals AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days831412019128
35 C (95 F): Days8159195430
40 C (104 F): Days11619525
90 F (32.2 C): Days83120201991
100 F (37.8 C): Days472119544
0 C (32 F): Ice days (max731619782
0 C (32 F): Frost days (min8387196033
-10 C (14 F): Days with min621519631
-20 C (-4 F): Days with min3219661
20 C (68 F): Tropical nights (min831162018104
25 C (77 F): Days with min24919545
10 mm (0.39 in): Days with 10 mm or more rain8258198929
25 mm (0.98 in): Days with 25 mm or more rain8229197511
50 mm (1.97 in): Days with 50 mm or more rain801319912
100 mm (3.94 in): Days with 100 mm or more rain20219911
10 cm (3.9 in): Days with 10 cm or more snowfall11219601

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 Muscle Shoals AP 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).