PASADENA, CALIFORNIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 67.8 70.3 71.3 76.0 78.2 84.0 89.4 90.6 88.5 82.5 73.8 68.0 78.4
Highest Mean Max. Temperature (F) 74.2 78.4 79.9 82.3 87.1 90.3 93.4 96.9 94.5 91.4 80.1 73.3 96.9
Year Highest Occurred 1976 1991 1997 1996 1997 1981 1990 1998 1984 1999 1991 1980 1998
Lowest Mean Max. Temperature (F) 61.4 64.5 65.6 66.3 71.1 75.9 83.7 86.0 80.5 77.6 68.4 61.6 61.4
Year Lowest Occurred 1979 1998 1973 1975 1977 1982 1993 1974 1986 2000 1994 1987 1979
Mean Temperature (F) 56.1 58.1 59.3 63.0 65.9 70.7 75.3 76.3 74.6 68.9 61.0 56.1 65.4
Highest Mean Temperature (F) 61.1 63.7 64.3 68.2 71.9 76.5 78.8 81.6 80.8 74.4 65.5 60.3 81.6
Year Highest Occurred 1986 1991 1997 1992 1984 1981 1985 1998 1984 1999 1976 1980 1998
Lowest Mean Temperature (F) 51.7 54.3 54.9 56.1 60.5 65.2 71.4 72.5 68.1 65.5 55.8 51.4 51.4
Year Lowest Occurred 1979 1975 1973 1975 1977 1982 1987 1976 1986 1975 1994 1971 1971
Mean Min. Temperature (F) 44.3 45.9 47.2 50.0 53.5 57.4 61.1 62.0 60.6 55.2 48.1 44.1 52.5
Highest Mean Min. Temperature (F) 48.8 50.1 50.3 54.8 57.4 62.7 65.7 66.2 67.1 59.1 51.8 49.9 67.1
Year Highest Occurred 1986 1980 1993 1992 1984 1981 1984 1998 1984 1987 1995 1977 1984
Lowest Mean Min. Temperature (F) 40.0 40.7 42.9 45.9 49.8 54.0 57.8 57.9 55.7 50.9 43.1 40.4 40.0
Year Lowest Occurred 1989 1990 1977 1975 1977 1975 1994 1989 1986 1996 1994 1990 1989
Mean Precipitation (in.) 4.48 5.00 4.38 1.22 0.45 0.21 0.05 0.21 0.48 0.65 1.50 2.46 21.09
Highest Precipitation (in.) 18.46 19.70 12.86 7.77 4.41 1.93 0.82 2.27 3.93 3.34 6.80 7.74 19.70
Year Highest Occurred 1995 1980 1978 1983 1998 1995 1992 1977 1976 1987 1982 1984 1980
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Year Lowest Occurred 1976 1984 1997 1997 1997 2000 2000 1999 1999 1999 2000 1989 1976
Heating Degree Days (F) 281. 205. 200. 129. 80. 20. 0. 2. 8. 34. 156. 283. 1398.
Cooling Degree Days (F) 3. 11. 22. 69. 106. 191. 318. 352. 294. 153. 33. 6. 1558.

Western Regional Climate Center, wrcc@dri.edu