EL CAPITAN DAM, CALIFORNIA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 70.2 71.7 72.1 77.4 80.9 89.2 95.9 97.0 93.7 86.6 77.8 71.4 82.0
Highest Mean Max. Temperature (F) 77.4 79.3 79.6 84.6 88.9 95.4 100.6 102.1 101.7 97.9 83.3 77.4 102.1
Year Highest Occurred 1994 1991 1988 1989 1984 1981 1985 1994 1979 1999 1991 1979 1994
Lowest Mean Max. Temperature (F) 63.6 64.0 63.8 66.0 71.9 80.9 90.1 90.6 84.2 80.1 73.1 62.4 62.4
Year Lowest Occurred 1979 1998 1973 1975 1980 1982 1987 1974 1976 1972 1985 1971 1971
Mean Temperature (F) 55.9 57.3 58.4 62.2 66.0 71.7 76.6 78.1 75.6 69.6 61.6 56.5 65.8
Highest Mean Temperature (F) 60.4 62.4 62.8 68.0 72.0 76.2 80.3 81.7 80.9 75.6 65.3 60.8 81.7
Year Highest Occurred 1994 1995 1997 1992 1997 1981 1984 1994 1984 1999 1991 1977 1994
Lowest Mean Temperature (F) 50.9 52.2 53.3 54.5 60.5 67.4 71.3 73.3 70.0 66.1 57.7 50.2 50.2
Year Lowest Occurred 1973 1998 1973 1975 1980 1982 1987 1974 1986 1975 1994 1971 1971
Mean Min. Temperature (F) 41.6 42.8 44.6 47.0 51.0 54.1 57.2 59.2 57.5 52.6 45.4 41.5 49.5
Highest Mean Min. Temperature (F) 46.9 49.5 49.6 52.3 56.6 58.4 62.1 63.4 62.8 57.5 49.2 47.6 63.4
Year Highest Occurred 1980 1995 1978 1990 1992 1990 1984 1971 1983 1987 1997 1977 1971
Lowest Mean Min. Temperature (F) 34.6 36.3 39.3 42.1 46.5 50.2 52.0 55.0 52.8 47.8 39.2 38.1 34.6
Year Lowest Occurred 1972 1985 1985 1998 1998 1985 2000 1987 1998 1975 2000 1971 1972
Mean Precipitation (in.) 3.19 3.35 3.67 1.21 0.44 0.15 0.08 0.13 0.35 0.81 1.49 2.01 16.88
Highest Precipitation (in.) 14.92 12.36 10.61 3.42 2.45 1.60 0.88 2.06 3.21 2.93 6.25 5.70 14.92
Year Highest Occurred 1993 1998 1991 1975 1977 1972 1991 1977 1976 1974 1985 1984 1993
Lowest Precipitation (in.) 0.04 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.00
Year Lowest Occurred 1976 1984 1997 1993 1996 2000 2000 2000 1996 1999 1980 2000 1997
Heating Degree Days (F) 289. 227. 223. 140. 81. 14. 0. 0. 4. 28. 137. 276. 1419.
Cooling Degree Days (F) 6. 10. 16. 56. 111. 214. 357. 405. 322. 171. 35. 9. 1712.

Western Regional Climate Center, wrcc@dri.edu