TRACY CARBONA, CALIFORNIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 54.7 61.7 66.5 73.3 80.9 88.1 93.1 92.1 87.8 78.9 65.1 55.4 74.8
Highest Mean Max. Temperature (F) 59.9 67.9 73.9 80.5 89.5 94.7 98.5 96.9 92.8 84.5 73.1 61.1 98.5
Year Highest Occurred 2000 1991 1972 1987 1992 1981 1996 1996 1974 1991 1995 1999 1996
Lowest Mean Max. Temperature (F) 49.1 58.0 60.4 65.4 70.2 81.4 87.7 85.0 82.4 73.2 57.4 48.1 48.1
Year Lowest Occurred 1985 1990 1991 1975 1998 1998 1987 1976 1985 1984 1982 1972 1972
Mean Temperature (F) 44.9 49.8 53.7 58.6 64.7 70.6 74.0 73.1 70.0 63.2 52.5 44.8 60.0
Highest Mean Temperature (F) 49.9 54.2 58.6 63.5 70.9 77.4 79.3 77.5 74.1 68.1 58.4 49.5 79.3
Year Highest Occurred 1995 1991 1972 1987 1992 1981 1996 1996 1984 1991 1995 1996 1996
Lowest Mean Temperature (F) 39.4 45.6 49.7 51.7 57.9 65.3 69.7 69.1 65.2 58.0 47.1 39.9 39.4
Year Lowest Occurred 1972 1990 1991 1975 1998 1980 1987 1976 1985 1984 1994 1972 1972
Mean Min. Temperature (F) 35.0 37.8 40.9 43.8 48.5 53.0 54.9 54.0 52.1 47.4 39.8 34.1 45.1
Highest Mean Min. Temperature (F) 42.2 42.5 46.3 48.1 53.7 60.1 60.1 58.1 55.8 51.6 44.5 41.2 60.1
Year Highest Occurred 1995 2000 1978 1997 1997 1981 1996 1996 1984 1991 1981 1996 1996
Lowest Mean Min. Temperature (F) 29.4 33.3 36.5 38.1 43.7 48.5 51.8 49.6 48.0 41.6 35.3 26.7 26.7
Year Lowest Occurred 1976 1990 1999 1975 1977 1980 1987 1975 1985 1971 1994 1990 1990
Mean Precipitation (in.) 1.97 1.92 1.71 0.70 0.59 0.08 0.04 0.06 0.26 0.65 1.19 1.41 10.58
Highest Precipitation (in.) 4.89 6.98 5.87 2.43 2.96 0.52 0.48 0.89 2.05 2.54 3.84 4.18 6.98
Year Highest Occurred 1983 1998 1983 1982 1990 1988 1980 1975 1982 2000 1972 1992 1998
Lowest Precipitation (in.) 0.17 0.12 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.00
Year Lowest Occurred 1976 1995 1994 1989 1992 1997 2000 2000 1997 1995 1995 1999 1994
Heating Degree Days (F) 625. 427. 354. 214. 105. 20. 2. 1. 13. 113. 378. 628. 2880.
Cooling Degree Days (F) 0. 0. 3. 21. 95. 188. 281. 250. 162. 54. 2. 0. 1056.

Western Regional Climate Center, wrcc@dri.edu