CASA GRANDE, ARIZONA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 67.4 72.2 77.3 86.1 94.6 104.0 105.1 102.7 98.3 88.0 75.2 66.7 86.5
Highest Mean Max. Temperature (F) 75.5 78.1 88.4 93.3 102.5 108.0 109.4 107.0 103.1 94.6 84.1 74.9 109.4
Year Highest Occurred 1986 1972 1972 1989 1997 1974 1997 1995 2000 1999 1999 1980 1997
Lowest Mean Max. Temperature (F) 59.7 65.3 68.9 79.1 88.7 99.9 98.4 98.3 91.7 81.7 67.5 61.4 59.7
Year Lowest Occurred 1979 1998 1991 1975 1977 1991 1984 1984 1976 1971 2000 1978 1979
Mean Temperature (F) 52.4 56.3 61.0 68.1 76.7 85.8 90.4 88.5 83.0 71.6 58.8 51.9 70.4
Highest Mean Temperature (F) 56.4 62.7 68.7 75.2 85.2 90.0 93.6 93.1 88.1 76.9 66.1 56.7 93.6
Year Highest Occurred 1986 1996 1972 1989 1997 1994 1996 1995 1997 1988 1995 1980 1996
Lowest Mean Temperature (F) 47.8 51.2 54.4 60.8 69.7 80.8 85.6 84.3 77.1 65.7 52.2 46.6 46.6
Year Lowest Occurred 1979 1975 1991 1975 1977 1982 1984 1979 1986 1982 2000 1974 1974
Mean Min. Temperature (F) 37.3 40.3 44.7 50.1 58.8 67.5 75.6 74.3 67.7 55.1 42.3 37.0 54.2
Highest Mean Min. Temperature (F) 45.8 48.2 50.1 57.0 67.8 73.7 79.6 79.8 74.8 61.9 49.5 42.4 79.8
Year Highest Occurred 1993 1996 1997 1989 1997 1994 1996 1994 1997 1988 1995 1991 1994
Lowest Mean Min. Temperature (F) 32.1 33.0 36.6 42.4 50.7 59.3 71.5 68.2 60.0 45.1 36.8 31.0 31.0
Year Lowest Occurred 1975 1984 1977 1975 1977 1980 1986 1979 1986 1982 2000 1976 1976
Mean Precipitation (in.) 0.77 0.83 0.99 0.28 0.19 0.10 0.80 1.97 0.82 0.77 0.74 0.96 9.22
Highest Precipitation (in.) 3.01 3.81 3.06 1.44 1.49 0.68 3.29 6.22 2.16 3.70 2.71 3.96 6.22
Year Highest Occurred 1979 1998 1983 1984 1992 1972 1984 1971 1993 1972 1993 1984 1971
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.15 0.00 0.00 0.00 0.00 0.00
Year Lowest Occurred 2000 1999 1984 1996 2000 1998 1999 1973 1988 1999 1999 1999 2000
Heating Degree Days (F) 391. 254. 188. 70. 11. 0. 0. 0. 0. 35. 215. 408. 1572.
Cooling Degree Days (F) 0. 9. 64. 163. 373. 622. 787. 729. 539. 239. 28. 1. 3554.

Western Regional Climate Center, wrcc@dri.edu