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Built 2026-10-19 (19 October 2026)

Willcox Threshold Days by Year

16 fixed thresholds counted per year at Willcox (USC00029334): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Willcox Thresholds

  • Willcox: days with 10 mm (0.39 in) or more of precipitation in 118 years, most in 1914 with 23.
  • Willcox: nights with a minimum temperature at or below 0 C (32 F) in 110 years, most in 1917 with 167.
  • Willcox: days with a maximum temperature at or above 30 C (86 F) in 105 years, most in 2017 with 176.
  • Willcox: days with a maximum temperature at or above 35 C (95 F) in 105 years, most in 2024 with 108.
  • 16 fixed thresholds have at least one qualifying day at Willcox.
105 years with a qualifying day
Days at or above 30 C (86 F) per year at Willcox Days per year at Willcox with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 2017. 0501001502001904: 1401905: 1281906: 1261907: 1221908: 1251909: 1241910: 1421912: 981913: 1461914: 1471915: 1531916: 1661917: 1061918: 981919: 871920: 731921: 1151923: 841924: 1161925: 1151928: 851929: 871930: 761931: 811932: 1081933: 1211934: 971935: 1141936: 1221937: 1131940: 1401941: 1201943: 1421944: 1161945: 1381946: 1421947: 1431948: 1531949: 1521950: 1601951: 1431952: 1661953: 1311954: 1511955: 1371956: 1571957: 1171959: 1301960: 1421961: 1371962: 1431963: 1531964: 1261965: 1341966: 1251967: 1241968: 1241969: 1481970: 1331972: 1461973: 1431974: 1331975: 1221976: 1241977: 1351978: 1431979: 1451980: 1361981: 1351982: 1341983: 1291984: 1391985: 1361986: 1301987: 1261988: 1371989: 1721990: 1301991: 1501992: 1451993: 1471994: 1491995: 1481996: 1572002: 1532003: 1532007: 1612009: 1462010: 1492011: 1562012: 1662013: 1352014: 1372015: 1372016: 1442017: 1762018: 1572019: 1302020: 1622021: 1322022: 1422023: 1522024: 1642025: 1572026: 1451904191619301944195519671979199020102021
Days per year at Willcox with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 2017.
Days at or above 30 C (86 F) per year at Willcox
YearDaysDecade average
1904140127.5
1905128127.5
1906126127.5
1907122127.5
1908125127.5
1909124127.5
1910142127
191298127
1913146127
1914147127
1915153127
1916166127
1917106127
191898127
191987127
19207396.4
192111596.4
19238496.4
192411696.4
192511596.4
19288596.4
19298796.4
193076104
193181104
1932108104
1933121104
193497104
1935114104
1936122104
1937113104
1940140138.4
1941120138.4
1943142138.4
1944116138.4
1945138138.4
1946142138.4
1947143138.4
1948153138.4
1949152138.4
1950160143.6
1951143143.6
1952166143.6
1953131143.6
1954151143.6
1955137143.6
1956157143.6
1957117143.6
1959130143.6
1960142135.6
1961137135.6
1962143135.6
1963153135.6
1964126135.6
1965134135.6
1966125135.6
1967124135.6
1968124135.6
1969148135.6
1970133136
1972146136
1973143136
1974133136
1975122136
1976124136
1977135136
1978143136
1979145136
1980136137.4
1981135137.4
1982134137.4
1983129137.4
1984139137.4
1985136137.4
1986130137.4
1987126137.4
1988137137.4
1989172137.4
1990130146.6
1991150146.6
1992145146.6
1993147146.6
1994149146.6
1995148146.6
1996157146.6
2002153153.3
2003153153.3
2007161153.3
2009146153.3
2010149148.7
2011156148.7
2012166148.7
2013135148.7
2014137148.7
2015137148.7
2016144148.7
2017176148.7
2018157148.7
2019130148.7
2020162150.6
2021132150.6
2022142150.6
2023152150.6
2024164150.6
2025157150.6
2026145150.6
First to last qualifying date each year at Willcox For each year, a bar from the first to the last day at Willcox meeting 30 C (86 F). 1904: 11 April 1904 to 8 October 19041905: 8 May 1905 to 8 October 19051906: 17 April 1906 to 9 November 19061907: 10 March 1907 to 28 September 19071908: 1 May 1908 to 14 October 19081909: 4 May 1909 to 21 October 19091910: 4 March 1910 to 15 October 19101912: 16 May 1912 to 27 September 19121913: 30 April 1913 to 14 October 19131914: 14 April 1914 to 24 October 19141915: 11 May 1915 to 7 November 19151916: 28 March 1916 to 5 November 19161917: 23 April 1917 to 12 October 19171918: 15 May 1918 to 4 October 19181919: 19 April 1919 to 13 September 19191920: 9 May 1920 to 29 September 19201921: 12 April 1921 to 25 October 19211923: 3 May 1923 to 2 October 19231924: 19 May 1924 to 19 October 19241925: 15 April 1925 to 5 October 19251928: 30 April 1928 to 11 October 19281929: 9 May 1929 to 9 October 19291930: 22 April 1930 to 23 September 19301931: 10 May 1931 to 30 September 19311932: 3 May 1932 to 18 October 19321933: 19 May 1933 to 2 October 19331934: 13 April 1934 to 10 October 19341935: 15 April 1935 to 12 October 19351936: 14 April 1936 to 14 October 19361937: 14 April 1937 to 9 October 19371940: 19 April 1940 to 8 October 19401941: 5 May 1941 to 27 September 19411943: 29 March 1943 to 17 October 19431944: 6 May 1944 to 16 October 19441945: 19 April 1945 to 26 September 19451946: 4 April 1946 to 26 September 19461947: 17 April 1947 to 20 October 19471948: 15 April 1948 to 16 October 19481949: 19 March 1949 to 13 October 19491950: 30 March 1950 to 8 November 19501951: 23 April 1951 to 19 October 19511952: 2 May 1952 to 27 October 19521953: 21 April 1953 to 16 October 19531954: 9 April 1954 to 23 October 19541955: 25 April 1955 to 20 October 19551956: 25 March 1956 to 22 October 19561957: 14 February 1957 to 2 October 19571959: 2 April 1959 to 26 October 19591960: 21 March 1960 to 8 October 19601961: 3 April 1961 to 21 October 19611962: 12 April 1962 to 14 October 19621963: 13 April 1963 to 15 October 19631964: 15 April 1964 to 29 October 19641965: 20 April 1965 to 14 October 19651966: 2 April 1966 to 10 October 19661967: 28 March 1967 to 2 October 19671968: 19 May 1968 to 2 November 19681969: 30 March 1969 to 10 October 19691970: 4 May 1970 to 25 September 19701972: 6 March 1972 to 16 October 19721973: 27 April 1973 to 11 November 19731974: 17 March 1974 to 4 October 19741975: 10 May 1975 to 11 October 19751976: 25 April 1976 to 11 October 19761977: 7 April 1977 to 17 October 19771978: 24 April 1978 to 19 October 19781979: 14 April 1979 to 26 October 19791980: 18 April 1980 to 10 October 19801981: 6 April 1981 to 30 September 19811982: 12 April 1982 to 6 October 19821983: 4 May 1983 to 16 October 19831984: 17 April 1984 to 24 September 19841985: 7 April 1985 to 7 October 19851986: 25 February 1986 to 1 October 19861987: 15 April 1987 to 28 October 19871988: 26 March 1988 to 17 October 19881989: 9 March 1989 to 24 October 19891990: 13 April 1990 to 26 October 19901991: 6 April 1991 to 20 October 19911992: 12 April 1992 to 18 October 19921993: 21 April 1993 to 11 October 19931994: 17 April 1994 to 5 October 19941995: 13 April 1995 to 28 October 19951996: 9 April 1996 to 18 October 19962002: 11 April 2002 to 10 October 20022003: 27 April 2003 to 24 October 20032007: 8 March 2007 to 9 November 20072009: 3 March 2009 to 6 November 20092010: 16 April 2010 to 30 October 20102011: 1 April 2011 to 24 October 20112012: 25 March 2012 to 8 November 20122013: 16 March 2013 to 25 October 20132014: 15 February 2014 to 27 October 20142015: 28 March 2015 to 15 October 20152016: 5 April 2016 to 30 October 20162017: 11 March 2017 to 27 November 20172018: 23 March 2018 to 4 October 20182019: 9 April 2019 to 24 October 20192020: 24 April 2020 to 19 November 20202021: 3 April 2021 to 26 October 20212022: 26 March 2022 to 1 October 20222023: 11 April 2023 to 6 November 20232024: 12 April 2024 to 29 October 20242025: 26 March 2025 to 8 November 20252026: 1 March 2026 to 9 October 202619041919193619531968198320022020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Willcox meeting 30 C (86 F).
First to last qualifying date each year at Willcox
YearFirst dateLast date
19041904-04-111904-10-08
19051905-05-081905-10-08
19061906-04-171906-11-09
19071907-03-101907-09-28
19081908-05-011908-10-14
19091909-05-041909-10-21
19101910-03-041910-10-15
19121912-05-161912-09-27
19131913-04-301913-10-14
19141914-04-141914-10-24
19151915-05-111915-11-07
19161916-03-281916-11-05
19171917-04-231917-10-12
19181918-05-151918-10-04
19191919-04-191919-09-13
19201920-05-091920-09-29
19211921-04-121921-10-25
19231923-05-031923-10-02
19241924-05-191924-10-19
19251925-04-151925-10-05
19281928-04-301928-10-11
19291929-05-091929-10-09
19301930-04-221930-09-23
19311931-05-101931-09-30
19321932-05-031932-10-18
19331933-05-191933-10-02
19341934-04-131934-10-10
19351935-04-151935-10-12
19361936-04-141936-10-14
19371937-04-141937-10-09
19401940-04-191940-10-08
19411941-05-051941-09-27
19431943-03-291943-10-17
19441944-05-061944-10-16
19451945-04-191945-09-26
19461946-04-041946-09-26
19471947-04-171947-10-20
19481948-04-151948-10-16
19491949-03-191949-10-13
19501950-03-301950-11-08
19511951-04-231951-10-19
19521952-05-021952-10-27
19531953-04-211953-10-16
19541954-04-091954-10-23
19551955-04-251955-10-20
19561956-03-251956-10-22
19571957-02-141957-10-02
19591959-04-021959-10-26
19601960-03-211960-10-08
19611961-04-031961-10-21
19621962-04-121962-10-14
19631963-04-131963-10-15
19641964-04-151964-10-29
19651965-04-201965-10-14
19661966-04-021966-10-10
19671967-03-281967-10-02
19681968-05-191968-11-02
19691969-03-301969-10-10
19701970-05-041970-09-25
19721972-03-061972-10-16
19731973-04-271973-11-11
19741974-03-171974-10-04
19751975-05-101975-10-11
19761976-04-251976-10-11
19771977-04-071977-10-17
19781978-04-241978-10-19
19791979-04-141979-10-26
19801980-04-181980-10-10
19811981-04-061981-09-30
19821982-04-121982-10-06
19831983-05-041983-10-16
19841984-04-171984-09-24
19851985-04-071985-10-07
19861986-02-251986-10-01
19871987-04-151987-10-28
19881988-03-261988-10-17
19891989-03-091989-10-24
19901990-04-131990-10-26
19911991-04-061991-10-20
19921992-04-121992-10-18
19931993-04-211993-10-11
19941994-04-171994-10-05
19951995-04-131995-10-28
19961996-04-091996-10-18
20022002-04-112002-10-10
20032003-04-272003-10-24
20072007-03-082007-11-09
20092009-03-032009-11-06
20102010-04-162010-10-30
20112011-04-012011-10-24
20122012-03-252012-11-08
20132013-03-162013-10-25
20142014-02-152014-10-27
20152015-03-282015-10-15
20162016-04-052016-10-30
20172017-03-112017-11-27
20182018-03-232018-10-04
20192019-04-092019-10-24
20202020-04-242020-11-19
20212021-04-032021-10-26
20222022-03-262022-10-01
20232023-04-112023-11-06
20242024-04-122024-10-29
20252025-03-262025-11-08
20262026-03-012026-10-09

Every Fixed Threshold

Fixed thresholds at Willcox
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1051762017145
35 C (95 F): Days105108202489
40 C (104 F): Days7223202313
90 F (32.2 C): Days1051461989119
100 F (37.8 C): Days10157202042
110 F (43.3 C): Days9320171
0 C (32 F): Ice days (max9219491
0 C (32 F): Frost days (min110167191731
-10 C (14 F): Days with min772519645
-20 C (-4 F): Days with min1119781
20 C (68 F): Tropical nights (min10436201032
25 C (77 F): Days with min5119081
10 mm (0.39 in): Days with 10 mm or more rain11823191411
25 mm (0.98 in): Days with 25 mm or more rain99619163
50 mm (1.97 in): Days with 50 mm or more rain18119061
10 cm (3.9 in): Days with 10 cm or more snowfall17219051

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

  • Data for Willcox 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).