PALO ALTO, CALIFORNIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 57.6 61.6 64.3 69.0 73.5 77.4 78.8 78.7 77.8 73.0 64.1 58.2 69.5
Highest Mean Max. Temperature (F) 64.0 65.7 70.2 74.5 79.5 84.6 83.1 83.5 85.2 76.1 68.4 62.8 85.2
Year Highest Occurred 1976 1977 1997 1997 1997 1981 1996 1996 1984 1995 1995 1975 1984
Lowest Mean Max. Temperature (F) 54.4 57.1 58.3 64.0 67.0 72.0 75.3 73.5 72.1 68.3 58.8 52.0 52.0
Year Lowest Occurred 1972 1990 1991 1994 1998 1994 1987 1986 1993 1993 1994 1993 1993
Mean Temperature (F) 49.0 52.4 55.0 58.2 62.4 66.2 68.0 68.0 66.4 61.5 54.0 48.7 59.2
Highest Mean Temperature (F) 53.7 55.4 59.5 62.3 66.0 71.9 70.5 71.1 70.9 63.8 59.0 53.4 71.9
Year Highest Occurred 1986 1980 1978 1989 1997 1981 1972 1971 1984 1978 1981 1981 1981
Lowest Mean Temperature (F) 45.2 47.7 51.2 53.5 58.0 62.4 64.9 65.6 60.7 58.0 49.0 43.4 43.4
Year Lowest Occurred 1994 1994 1991 1994 1977 1994 1994 1986 1993 1971 1993 1993 1993
Mean Min. Temperature (F) 40.4 43.2 45.6 47.4 51.2 55.0 57.1 57.2 55.0 50.0 43.9 39.2 48.8
Highest Mean Min. Temperature (F) 46.6 47.5 51.5 51.7 54.3 59.3 60.3 61.5 58.4 53.9 50.1 45.6 61.5
Year Highest Occurred 1978 1986 1978 1989 1992 1981 1972 1971 1979 1987 1981 1983 1971
Lowest Mean Min. Temperature (F) 35.3 36.9 41.1 43.0 46.8 51.1 53.6 54.8 49.3 46.6 37.9 33.0 33.0
Year Lowest Occurred 1976 1994 1977 1994 1994 1991 2000 2000 1993 1998 1993 1990 1990
Mean Precipitation (in.) 3.24 3.18 2.65 0.89 0.35 0.11 0.03 0.08 0.19 0.85 1.83 2.31 15.71
Highest Precipitation (in.) 7.91 12.43 8.54 2.84 2.49 1.04 0.34 0.81 1.09 3.72 6.31 5.49 12.43
Year Highest Occurred 1995 1998 1983 1978 1998 1995 1980 1976 1982 1972 1972 1996 1998
Lowest Precipitation (in.) 0.28 0.26 0.05 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.01 0.00
Year Lowest Occurred 1991 1997 1988 1977 1992 1998 2000 1998 1996 1995 1995 1989 1992
Heating Degree Days (F) 496. 353. 312. 211. 124. 46. 15. 10. 53. 128. 330. 506. 2584.
Cooling Degree Days (F) 0. 0. 1. 8. 41. 81. 106. 101. 95. 19. 0. 0. 452.

Western Regional Climate Center, wrcc@dri.edu