SAN BERNARDINO, CALIFORNIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 67.0 68.8 70.7 76.6 81.3 89.5 96.0 96.2 91.4 83.0 73.4 67.7 80.1
Highest Mean Max. Temperature (F) 75.8 78.1 80.0 82.7 92.9 98.7 101.4 102.1 101.0 91.3 81.1 75.8 102.1
Year Highest Occurred 1976 1977 1997 1996 1984 1981 1980 1981 1979 1999 1977 1980 1981
Lowest Mean Max. Temperature (F) 61.0 61.9 62.7 67.1 71.7 81.2 88.0 90.5 81.3 77.1 65.9 59.2 59.2
Year Lowest Occurred 1993 1998 1991 1975 1977 1982 1993 1989 1986 1972 1994 1987 1987
Mean Temperature (F) 54.4 56.2 58.0 62.7 67.5 73.8 79.6 80.1 76.3 68.4 59.4 54.5 65.9
Highest Mean Temperature (F) 58.2 60.8 63.6 66.9 74.7 80.4 84.1 83.9 82.6 72.9 64.1 60.0 84.1
Year Highest Occurred 1986 1995 1997 1996 1997 1981 1984 1971 1984 1999 1995 1980 1984
Lowest Mean Temperature (F) 49.7 52.1 51.9 55.3 60.5 68.6 73.8 76.0 68.3 64.6 52.9 48.8 48.8
Year Lowest Occurred 1979 1989 1991 1975 1977 1982 1987 1989 1986 1972 1994 1987 1987
Mean Min. Temperature (F) 41.8 43.5 45.3 48.7 53.6 58.1 63.1 64.0 61.1 53.7 45.4 41.2 51.6
Highest Mean Min. Temperature (F) 47.6 48.9 48.9 52.8 59.8 62.1 68.5 67.6 67.1 57.5 48.8 46.3 68.5
Year Highest Occurred 1980 1995 1993 1992 1997 1981 1984 1984 1984 1991 1995 1977 1984
Lowest Mean Min. Temperature (F) 36.4 38.7 40.3 43.6 49.3 54.2 58.6 59.0 55.3 48.4 39.9 35.7 35.7
Year Lowest Occurred 1972 1979 1977 1975 1977 1975 1987 1975 1986 1971 1994 1978 1978
Mean Precipitation (in.) 3.50 3.70 3.28 0.93 0.41 0.09 0.04 0.22 0.41 0.71 1.20 1.94 16.43
Highest Precipitation (in.) 13.87 15.03 9.65 3.22 3.96 0.86 0.36 3.72 5.12 3.54 4.35 5.87 15.03
Year Highest Occurred 1993 1998 1978 1983 1998 1995 1984 1983 1976 1987 1982 1971 1998
Lowest Precipitation (in.) 0.00 0.05 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 1972 1997 1997 1997 2000 2000 2000 2000 1999 1998 1990 1976
Heating Degree Days (F) 331. 253. 236. 129. 72. 10. 0. 0. 6. 38. 191. 333. 1599.
Cooling Degree Days (F) 3. 5. 19. 59. 146. 274. 451. 468. 344. 141. 21. 6. 1937.

Western Regional Climate Center, wrcc@dri.edu