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Tucson, Arizona
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1st 110 degree data for Tucson AZ
100°+ highs 105°+ highs 110°+ highs
Yearly 1st dates Monthly & Yearly totals Consecutive days
Year-by-year listing of the 1st 110 degree occurrence in Tucson
Average 1st occurrence (1895-2013) is June 29th
Year Date Year Date Year Date Year Date
2014 ??? 2009 -- 1999 -- 1989 June 18
2013 June 28 2008 June 21 1998 July 15 1988 June 21
2012 -- 2007 July 4 1997 June 15 1987 July 13
2011 June 27 2006 July 21 1996 -- 1986 July 31
2010 -- 2005 June 20 1995 June 25 1985 June 8
. . 2004 -- 1994 June 24 1984 --
. . 2003 July 16 1993 June 14 1983 July 5
. . 2002 -- 1992 July 4 1982 --
. . 2001 July 2 1991 June 18 1981 --
. . 2000 -- 1990 June 4 1980 --

Year Date Year Date Year Date Year Date
1979 July 9 1969 -- 1959 -- 1949 --
1978 -- 1968 June 22 1958 July 11 1948 --
1977 -- 1967 -- 1957 June 24 1947 July 1
1976 -- 1966 -- 1956 -- 1946 --
1975 -- 1965 -- 1955 June 22 1945 --
1974 -- 1964 -- 1954 -- 1944 --
1973 -- 1963 -- 1953 July 1 1943 --
1972 -- 1962 -- 1952 -- 1942 July 7
1971 -- 1961 -- 1951 -- 1941 --
1970 June 25 1960 -- 1950 -- 1940 July 4

Year Date Year Date Year Date Year Date
1939 -- 1929 June 24 1919 June 26 1909 --
1938 -- 1928 -- 1918 Aug. 2 1908 --
1937 July 2 1927 -- 1917 June 18 1907 July 2
1936 June 18 1926 -- 1916 -- 1906 --
1935 -- 1925 -- 1915 Aug. 19 1905 --
1934 -- 1924 June 13 1914 -- 1904 --
1933 June 11 1923 June 29 1913 -- 1903 --
1932 June 27 1922 June 18 1912 -- 1902 June 22
1931 -- 1921 -- 1911 -- 1901 --
1930 June 27 1920 July 8 1910 May 29 1900 --

Year Date . Top 5 earliest occurrences . Top 5 latest 1st occurrences
1899 -- 1 May 29, 1910 1 August 19, 1915
1898 -- 2 June 4, 1990 2 August 2, 1918
1897 -- 3 June 8, 1985 3 July 31, 1986
1896 June 10 4 June 10, 1896 4 July 21, 2006
1895 -- 5 June 11, 1933 5 July 16, 2003
 
1st 110 degree occurrence in Tucson by date
Dates # occurrences Year(s)
May 29 1 1910
June 4 1 1990
June 8 1 1985
June 10 1 1896
June 11 1 1933
June 13 1 1924
June 14 1 1993
June 15 1 1997
June 18 5 1991, 1989, 1936, 1922, 1917
June 20 1 2005
June 21 2 2008, 1988
June 22 3 1968, 1955, 1902
June 24 3 1994, 1957, 1929
June 25 2 1995, 1970
June 26 1 1919
June 27 3 2011, 1932, 1930
June 28 1 2013
June 29 1 1923
July 1 2 1953, 1947
July 2 3 2001, 1937, 1907
July 4 3 2007, 1992, 1940
July 5 1 1983
July 7 1 1942
July 8 1 1920
July 9 1 1979
July 11 1 1958
July 13 1 1987
July 15 1 1998
July 16 1 2003
July 21 1 2006
July 31 1 1986
August 2 1 1918
August 19 1 1915
Average 1st 110 degree occurrence by decade
1900s June 27 (2 yrs) .
1910s July 7 (5 yrs) Earliest occurrence (May 29, 1910) & Latest occurrence (August 19, 1915)
1920s June 24 (4 yrs) .
1930s June 22 (5 yrs) .
1940s July 4 (3 yrs) .
1950s June 30 (4 yrs) .
1960s June 22 (1 yr) .
1970s July 2 (2 yrs) .
1980s July 1 (6 yrs) .
1990s June 26 (8 yrs) .
2000s July 4 (6 yrs) .
2010s June 27 (2 yrs) .
 

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National Oceanic and Atmospheric Administration
National Weather Service
Tucson Weather Forecast Office
520 North Park Ave, Suite 304
Tucson, AZ 85719

Tel: (520) 670-6526

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