TUCSON MAGNETIC OBSY,

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(028800)

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 199403
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1912 20.00 22.00 33.00 34.00 36.00 53.00 52.00 61.00 50.00 31.00 30.00 18.00 18.00
1913 6.00 a 27.00 26.00 36.00 38.00 50.00 57.00 61.00 45.00 38.00 33.00 27.00 6.00
1914 23.00 23.00 33.00 37.00 39.00 54.00 64.00 65.00 58.00 41.00 36.00 24.00 23.00
1915 21.00 29.00 32.00 36.00 31.00 50.00 51.00 63.00 46.00 37.00 25.00 19.00 19.00
1916 23.00 21.00 30.00 32.00 39.00 44.00 62.00 60.00 50.00 49.00 v ----- z ----- z 21.00
1917 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1918 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1919 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1920 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1921 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1922 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1923 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1934 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 43.00 u 39.00 22.00 21.00 21.00
1935 21.00 28.00 29.00 33.00 41.00 47.00 57.00 64.00 54.00 31.00 23.00 22.00 21.00
1936 19.00 26.00 28.00 30.00 40.00 46.00 61.00 61.00 42.00 39.00 25.00 24.00 19.00
1937 12.00 20.00 28.00 29.00 38.00 50.00 62.00 65.00 58.00 41.00 27.00 25.00 12.00
1938 21.00 25.00 27.00 25.00 37.00 50.00 56.00 57.00 57.00 34.00 a 22.00 22.00 21.00
1939 24.00 20.00 26.00 38.00 a 44.00 55.00 61.00 63.00 b 48.00 39.00 35.00 22.00 20.00
1940 22.00 27.00 30.00 40.00 48.00 57.00 61.00 60.00 60.00 35.00 24.00 31.00 22.00
1941 26.00 34.00 33.00 28.00 39.00 49.00 60.00 63.00 43.00 34.00 26.00 23.00 23.00
1942 25.00 24.00 24.00 35.00 38.00 52.00 67.00 59.00 55.00 36.00 27.00 26.00 24.00
1943 25.00 26.00 35.00 37.00 42.00 53.00 62.00 63.00 59.00 35.00 26.00 27.00 25.00
1944 21.00 25.00 28.00 33.00 43.00 52.00 59.00 65.00 54.00 43.00 29.00 26.00 21.00
1945 26.00 26.00 28.00 27.00 41.00 51.00 65.00 67.00 45.00 35.00 26.00 19.00 19.00
1946 22.00 20.00 32.00 32.00 45.00 56.00 62.00 65.00 57.00 39.00 24.00 24.00 20.00
1947 21.00 25.00 32.00 33.00 47.00 53.00 65.00 65.00 58.00 39.00 20.00 21.00 20.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z 65.00 62.00 58.00 40.00 25.00 18.00 18.00
1949 15.00 18.00 29.00 38.00 40.00 48.00 62.00 60.00 61.00 31.00 33.00 20.00 15.00
1950 15.00 25.00 32.00 37.00 32.00 49.00 63.00 62.00 48.00 44.00 32.00 24.00 15.00
1951 24.00 23.00 18.00 35.00 40.00 46.00 63.00 62.00 53.00 39.00 29.00 22.00 18.00
1952 19.00 22.00 25.00 40.00 45.00 52.00 59.00 65.00 48.00 41.00 25.00 23.00 19.00
1953 22.00 14.00 25.00 30.00 35.00 48.00 67.00 62.00 45.00 36.00 22.00 19.00 14.00
1954 19.00 27.00 23.00 39.00 40.00 49.00 66.00 56.00 55.00 35.00 28.00 14.00 14.00
1955 20.00 15.00 21.00 29.00 37.00 44.00 60.00 62.00 49.00 36.00 24.00 b 28.00 15.00
1956 23.00 19.00 21.00 30.00 41.00 58.00 58.00 57.00 56.00 a 32.00 19.00 b 18.00 b 18.00
1957 28.00 28.00 29.00 34.00 b 40.00 55.00 68.00 64.00 b 51.00 a 40.00 25.00 a 22.00 22.00
1958 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1959 20.00 22.00 23.00 38.00 38.00 50.00 63.00 a 62.00 47.00 37.00 26.00 26.00 20.00
1960 19.00 19.00 27.00 29.00 40.00 54.00 60.00 64.00 50.00 i 37.00 23.00 15.00 b 15.00
1961 26.00 28.00 32.00 36.00 42.00 49.00 62.00 63.00 52.00 38.00 29.00 27.00 26.00
1962 19.00 25.00 24.00 34.00 40.00 47.00 61.00 62.00 55.00 40.00 27.00 29.00 19.00
1963 20.00 29.00 26.00 c 31.00 45.00 50.00 a 64.00 64.00 58.00 47.00 32.00 b 23.00 20.00
1964 13.00 a 18.00 23.00 35.00 35.00 a 53.00 a 67.00 b 62.00 53.00 b 43.00 27.00 23.00 13.00
1965 23.00 20.00 d 19.00 32.00 35.00 47.00 64.00 63.00 40.00 37.00 32.00 28.00 19.00
1966 22.00 23.00 22.00 35.00 44.00 49.00 62.00 63.00 60.00 35.00 26.00 17.00 17.00
1967 14.00 23.00 25.00 33.00 32.00 50.00 66.00 64.00 56.00 35.00 29.00 20.00 14.00
1968 26.00 31.00 32.00 32.00 43.00 52.00 62.00 57.00 45.00 38.00 27.00 18.00 18.00
1969 21.00 21.00 24.00 37.00 40.00 53.00 65.00 68.00 55.00 34.00 29.00 23.00 21.00
1970 19.00 21.00 28.00 31.00 36.00 53.00 66.00 66.00 48.00 32.00 30.00 24.00 19.00
1971 15.00 21.00 21.00 33.00 38.00 46.00 64.00 60.00 45.00 27.00 29.00 23.00 15.00
1972 22.00 21.00 26.00 32.00 43.00 56.00 64.00 62.00 52.00 39.00 28.00 24.00 21.00
1973 20.00 30.00 31.00 32.00 39.00 52.00 60.00 63.00 49.00 35.00 28.00 22.00 20.00
1974 25.00 24.00 28.00 34.00 41.00 53.00 65.00 62.00 58.00 39.00 29.00 15.00 15.00
1975 21.00 22.00 28.00 31.00 36.00 55.00 58.00 62.00 50.00 34.00 27.00 23.00 21.00
1976 20.00 28.00 30.00 31.00 44.00 53.00 65.00 59.00 43.00 35.00 22.00 24.00 20.00
1977 26.00 25.00 28.00 32.00 42.00 55.00 69.00 65.00 58.00 45.00 33.00 28.00 25.00
1978 26.00 25.00 32.00 33.00 42.00 53.00 59.00 62.00 52.00 46.00 32.00 16.00 16.00
1979 22.00 a 28.00 31.00 31.00 39.00 50.00 61.00 57.00 58.00 35.00 23.00 27.00 22.00
1980 26.00 33.00 33.00 35.00 39.00 49.00 63.00 62.00 56.00 37.00 26.00 27.00 26.00
1981 30.00 24.00 35.00 36.00 47.00 57.00 67.00 65.00 55.00 35.00 29.00 23.00 23.00
1982 27.00 26.00 29.00 35.00 44.00 52.00 61.00 64.00 51.00 36.00 32.00 25.00 25.00
1983 26.00 29.00 32.00 31.00 42.00 53.00 58.00 60.00 62.00 45.00 25.00 28.00 25.00
1984 25.00 24.00 28.00 33.00 45.00 59.00 65.00 64.00 58.00 41.00 25.00 26.00 24.00
1985 28.00 19.00 28.00 38.00 45.00 52.00 64.00 60.00 52.00 46.00 26.00 24.00 19.00
1986 30.00 26.00 33.00 34.00 40.00 59.00 64.00 67.00 46.00 39.00 32.00 27.00 26.00
1987 22.00 30.00 31.00 39.00 46.00 57.00 60.00 61.00 a 55.00 50.00 28.00 21.00 21.00
1988 25.00 30.00 26.00 34.00 37.00 50.00 70.00 68.00 50.00 51.00 27.00 18.00 18.00
1989 22.00 30.00 30.00 39.00 47.00 56.00 68.00 61.00 52.00 36.00 30.00 22.00 22.00
1990 26.00 23.00 28.00 44.00 46.00 55.00 66.00 60.00 55.00 40.00 27.00 21.00 21.00
1991 24.00 31.00 31.00 33.00 39.00 51.00 66.00 65.00 58.00 33.00 32.00 27.00 24.00
1992 26.00 35.00 36.00 39.00 46.00 55.00 57.00 59.00 57.00 42.00 23.00 26.00 23.00
1993 29.00 30.00 34.00 36.00 45.00 48.00 63.00 65.00 50.00 41.00 25.00 25.00 25.00
1994 24.00 24.00 36.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 24.00
Period of Record Statistics
MEAN 22.10 24.71 28.37 33.95 40.61 51.68 62.44 62.38 52.48 38.10 27.25 22.92 19.84
S.D. 4.46 4.43 4.21 3.57 3.94 3.56 3.77 2.70 5.36 4.64 3.66 3.78 3.97
SKEW -0.96 0.01 -0.36 0.14 -0.24 -0.03 -0.63 -0.25 -0.36 0.52 0.17 -0.35 -0.76
MAX 30.00 35.00 36.00 44.00 48.00 59.00 70.00 68.00 62.00 51.00 36.00 31.00 26.00
MIN 6.00 14.00 18.00 25.00 31.00 44.00 51.00 56.00 40.00 27.00 19.00 14.00 6.00
NO YRS 63 63 63 62 62 62 63 63 62 63 63 63 57