TRONA, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 58.8 65.9 71.4 79.1 88.5 98.7 105.1 103.0 95.0 84.1 69.5 58.5 81.5
Highest Mean Max. Temperature (F) 65.3 72.4 81.5 90.0 96.2 104.4 109.9 107.6 101.6 92.4 74.7 64.3 83.8
Year Highest Occurred 1980 1963 1972 1989 1984 1981 1989 1981 1974 1988 1967 1977 1989
Lowest Mean Max. Temperature (F) 52.3 58.0 65.3 67.1 77.9 92.7 101.0 98.1 87.1 77.5 62.1 49.7 78.8
Year Lowest Occurred 1979 1969 1973 1967 1977 1965 1987 1968 1985 1981 1982 1984 1983
Mean Temperature (F) 45.5 51.7 57.2 64.3 73.4 82.7 89.2 87.5 79.7 68.5 55.2 45.3 66.7
Highest Mean Temperature (F) 53.2 57.7 63.9 74.6 80.6 89.3 94.0 91.6 84.8 76.6 59.4 50.7 69.2
Year Highest Occurred 1980 1963 1989 1989 1984 1981 1989 1981 1979 1988 1967 1977 1989
Lowest Mean Temperature (F) 41.5 45.8 51.8 53.5 65.1 75.7 85.3 81.8 73.4 63.2 50.6 40.8 64.8
Year Lowest Occurred 1963 1966 1977 1967 1977 1967 1987 1968 1985 1972 1964 1968 1971
Mean Min. Temperature (F) 32.1 37.4 43.0 49.5 58.2 66.7 73.2 72.0 64.3 52.8 40.8 32.0 51.8
Highest Mean Min. Temperature (F) 41.0 45.4 50.0 59.1 64.9 74.1 79.9 77.6 72.5 60.8 46.4 39.1 55.7
Year Highest Occurred 1980 1986 1989 1989 1984 1981 1984 1984 1984 1988 1988 1983 1984
Lowest Mean Min. Temperature (F) 25.2 30.8 37.6 39.9 51.4 58.6 67.4 65.3 57.5 45.1 35.6 25.6 48.9
Year Lowest Occurred 1963 1964 1977 1967 1971 1967 1966 1976 1965 1971 1971 1968 1971
Mean Precipitation (in.) 0.76 0.69 0.49 0.17 0.10 0.12 0.22 0.39 0.24 0.18 0.49 0.42 4.27
Highest Precipitation (in.) 2.85 2.44 2.51 1.38 0.89 1.29 2.93 2.66 2.52 1.92 2.79 2.60 8.66
Year Highest Occurred 1974 1978 1978 1965 1977 1972 1968 1984 1976 1963 1965 1984 1978
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 0.54
Year Lowest Occurred 1984 1990 1990 1990 1988 1990 1990 1990 1989 1990 1989 1990 1989
Heating Degree Days (F) 605. 372. 262. 148. 20. 0. 0. 0. 0. 52. 297. 611. 2367.
Cooling Degree Days (F) 0. 0. 20. 127. 280. 531. 750. 698. 441. 161. 0. 0. 3008.

Western Regional Climate Center, wrcc@dri.edu