TUCSON MAGNETIC OBSY, ARIZONA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 65.4 69.0 73.5 81.8 91.0 101.0 100.9 98.8 95.6 85.7 73.7 65.9 83.5
Highest Mean Max. Temperature (F) 73.5 73.9 83.4 91.2 98.4 105.4 103.9 102.4 100.8 91.7 82.9 74.0 105.4
Year Highest Occurred 1986 1995 1972 1989 2000 1994 1989 1994 2000 1999 1999 1980 1994
Lowest Mean Max. Temperature (F) 57.2 62.1 62.4 74.3 86.1 97.8 96.3 93.4 91.0 77.8 66.6 59.4 57.2
Year Lowest Occurred 1979 1998 1973 1983 1995 1991 1990 1990 1976 1971 1972 1971 1979
Mean Temperature (F) 50.5 53.7 57.6 64.1 72.9 82.6 86.4 84.8 80.5 69.4 57.2 50.7 67.5
Highest Mean Temperature (F) 55.7 59.2 63.3 71.5 79.1 87.4 89.0 88.3 84.9 74.1 62.5 56.2 89.0
Year Highest Occurred 1986 1995 1989 1989 2000 1994 1989 1994 1997 1987 1995 1980 1989
Lowest Mean Temperature (F) 46.4 49.7 50.3 58.1 68.5 78.8 83.7 80.6 76.0 64.5 51.4 45.8 45.8
Year Lowest Occurred 1973 1975 1973 1975 1971 1991 1984 1990 1985 1971 1972 1974 1974
Mean Min. Temperature (F) 35.5 38.4 41.6 46.3 54.7 64.2 71.9 70.8 65.3 53.1 40.7 35.5 51.5
Highest Mean Min. Temperature (F) 42.7 44.4 45.5 51.8 59.8 69.4 74.3 74.2 70.5 58.5 45.2 41.2 74.3
Year Highest Occurred 1993 1995 1989 1989 2000 1994 1980 1994 1997 1988 1982 1991 1980
Lowest Mean Min. Temperature (F) 29.5 32.6 36.9 41.5 49.4 59.5 68.8 66.4 59.5 46.4 35.7 30.2 29.5
Year Lowest Occurred 1971 1974 1977 1975 1971 1982 1987 1979 1986 1982 1992 1974 1971
Mean Precipitation (in.) 1.34 1.19 1.31 0.30 0.28 0.30 1.95 2.56 1.32 1.21 0.81 1.29 13.86
Highest Precipitation (in.) 6.48 3.25 3.19 1.03 1.73 1.84 6.87 5.09 4.40 6.21 2.67 5.17 6.87
Year Highest Occurred 1993 1980 1992 1988 1992 1984 1990 1971 1976 1983 1978 1992 1990
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 0.49 0.32 0.06 0.00 0.00 0.00 0.00
Year Lowest Occurred 1972 1984 1984 1993 2000 1993 1993 1975 1973 1982 1999 1981 1972
Heating Degree Days (F) 452. 319. 251. 118. 20. 0. 0. 0. 0. 37. 247. 444. 1888.
Cooling Degree Days (F) 0. 2. 20. 90. 262. 529. 663. 613. 464. 173. 14. 0. 2830.

Western Regional Climate Center, wrcc@dri.edu