MOUNT DIABLO JUNCTION, CALIFORNIA

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(045915)

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1952 ----- z ----- z ----- z 78.00 88.00 89.00 100.00 93.00 100.00 97.00 79.00 65.00 100.00
1953 69.00 67.00 75.00 76.00 81.00 91.00 98.00 98.00 101.00 91.00 75.00 72.00 101.00
1954 62.00 74.00 69.00 84.00 89.00 101.00 104.00 93.00 95.00 88.00 76.00 65.00 104.00
1955 62.00 67.00 73.00 72.00 89.00 94.00 94.00 101.00 107.00 89.00 80.00 65.00 107.00
1956 59.00 62.00 71.00 77.00 89.00 104.00 103.00 98.00 97.00 84.00 85.00 74.00 104.00
1957 71.00 69.00 a 75.00 84.00 85.00 104.00 101.00 98.00 105.00 78.00 80.00 73.00 105.00
1958 66.00 67.00 59.00 80.00 87.00 93.00 ----- z 98.00 101.00 95.00 79.00 76.00 101.00
1959 66.00 65.00 74.00 85.00 88.00 102.00 105.00 101.00 95.00 93.00 79.00 74.00 105.00
1960 65.00 61.00 77.00 80.00 88.00 103.00 107.00 102.00 100.00 83.00 81.00 74.00 107.00
1961 72.00 70.00 68.00 84.00 76.00 107.00 a 107.00 a 99.00 a 95.00 95.00 76.00 68.00 107.00
1962 70.00 70.00 70.00 85.00 a 92.00 98.00 96.00 100.00 95.00 90.00 81.00 72.00 100.00
1963 68.00 72.00 71.00 70.00 86.00 96.00 97.00 99.00 105.00 90.00 72.00 74.00 105.00
1964 73.00 68.00 77.00 85.00 84.00 101.00 104.00 100.00 100.00 96.00 74.00 69.00 104.00
1965 71.00 73.00 74.00 83.00 88.00 a 91.00 100.00 98.00 93.00 96.00 83.00 73.00 100.00
1966 65.00 65.00 83.00 87.00 92.00 104.00 104.00 107.00 100.00 92.00 90.00 75.00 107.00
1967 73.00 74.00 71.00 61.00 94.00 100.00 100.00 104.00 96.00 89.00 84.00 70.00 104.00
1968 74.00 71.00 79.00 84.00 87.00 97.00 100.00 99.00 93.00 88.00 75.00 64.00 100.00
1969 72.00 62.00 78.00 76.00 a 89.00 f 90.00 98.00 101.00 100.00 86.00 a 81.00 69.00 101.00
1970 58.00 73.00 79.00 77.00 95.00 96.00 104.00 101.00 97.00 94.00 76.00 65.00 104.00
1971 75.00 78.00 72.00 77.00 80.00 95.00 99.00 107.00 107.00 95.00 78.00 58.00 107.00
1972 70.00 71.00 84.00 83.00 95.00 101.00 d 111.00 97.00 91.00 c 82.00 69.00 68.00 111.00
1973 64.00 67.00 65.00 83.00 94.00 101.00 104.00 99.00 93.00 87.00 81.00 67.00 104.00
1974 62.00 65.00 72.00 76.00 a 95.00 97.00 100.00 97.00 96.00 a 92.00 76.00 65.00 100.00
1975 73.00 72.00 74.00 72.00 93.00 97.00 105.00 100.00 100.00 90.00 77.00 73.00 105.00
1976 74.00 78.00 77.00 78.00 e 97.00 99.00 o 102.00 b 101.00 103.00 90.00 b 89.00 72.00 103.00
1977 75.00 a 80.00 a 75.00 83.00 88.00 a 100.00 b 106.00 104.00 a 103.00 91.00 76.00 70.00 106.00
1978 63.00 71.00 76.00 79.00 92.00 100.00 103.00 107.00 99.00 95.00 84.00 66.00 107.00
1979 60.00 66.00 77.00 75.00 93.00 99.00 103.00 97.00 101.00 89.00 70.00 75.00 103.00
1980 64.00 65.00 70.00 75.00 85.00 92.00 101.00 99.00 a 91.00 ----- z 81.00 77.00 101.00
1981 71.00 71.00 70.00 87.00 88.00 100.00 94.00 a 102.00 92.00 84.00 77.00 69.00 102.00
1982 67.00 72.00 68.00 77.00 91.00 88.00 94.00 95.00 94.00 83.00 72.00 63.00 95.00
1983 77.00 65.00 65.00 69.00 86.00 89.00 98.00 99.00 98.00 85.00 71.00 59.00 99.00
1984 69.00 69.00 75.00 81.00 96.00 98.00 104.00 101.00 99.00 83.00 67.00 65.00 104.00
1985 68.00 72.00 70.00 87.00 83.00 a 96.00 98.00 95.00 90.00 90.00 78.00 73.00 98.00
1986 74.00 77.00 76.00 82.00 91.00 94.00 95.00 94.00 93.00 86.00 ----- z 70.00 95.00
1987 66.00 73.00 77.00 86.00 102.00 d 100.00 90.00 98.00 100.00 ----- z ----- z 59.00 102.00
1988 73.00 75.00 ----- z ----- z 89.00 94.00 105.00 100.00 107.00 94.00 78.00 73.00 107.00
1989 69.00 71.00 69.00 89.00 87.00 92.00 100.00 93.00 93.00 89.00 76.00 73.00 100.00
1990 71.00 69.00 74.00 86.00 90.00 97.00 100.00 101.00 92.00 91.00 79.00 72.00 101.00
1991 65.00 74.00 68.00 77.00 85.00 90.00 102.00 ----- z 96.00 96.00 82.00 65.00 102.00
1992 69.00 76.00 69.00 85.00 95.00 92.00 95.00 100.00 94.00 90.00 74.00 64.00 100.00
1993 67.00 68.00 74.00 80.00 84.00 98.00 92.00 101.00 95.00 88.00 79.00 65.00 a 101.00
1994 74.00 62.00 76.00 79.00 89.00 96.00 93.00 98.00 93.00 85.00 72.00 75.00 98.00
1995 60.00 76.00 67.00 78.00 89.00 98.00 98.00 99.00 95.00 87.00 80.00 71.00 b 99.00
1996 70.00 76.00 78.00 85.00 89.00 94.00 100.00 103.00 92.00 98.00 79.00 64.00 103.00
1997 65.00 73.00 76.00 79.00 93.00 92.00 94.00 100.00 94.00 88.00 85.00 68.00 100.00
1998 64.00 57.00 70.00 81.00 68.00 87.00 99.00 105.00 103.00 83.00 70.00 72.00 105.00
1999 70.00 62.00 65.00 82.00 84.00 95.00 101.00 97.00 93.00 92.00 77.00 69.00 101.00
2000 60.00 65.00 74.00 84.00 92.00 99.00 93.00 99.00 98.00 90.00 71.00 71.00 99.00
2001 71.00 73.00 77.00 82.00 96.00 98.00 102.00 100.00 93.00 99.00 80.00 66.00 102.00
2002 63.00 71.00 79.00 81.00 90.00 96.00 105.00 99.00 100.00 91.00 74.00 63.00 105.00
2003 69.00 65.00 77.00 73.00 93.00 99.00 100.00 95.00 101.00 90.00 70.00 61.00 101.00
2004 69.00 62.00 83.00 90.00 88.00 95.00 94.00 98.00 98.00 89.00 70.00 64.00 98.00
2005 62.00 65.00 75.00 71.00 85.00 88.00 99.00 97.00 93.00 89.00 77.00 65.00 99.00
2006 66.00 72.00 62.00 81.00 89.00 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z 89.00
Period of Record Statistics
MEAN 67.87 69.52 73.19 80.02 88.93 96.38 100.02 99.38 97.31 89.71 77.40 68.65 102.33
S.D. 4.74 5.05 5.15 5.59 5.50 4.69 4.46 3.26 4.50 4.54 5.01 4.74 3.07
SKEW -0.21 -0.18 -0.36 -0.84 -0.96 -0.07 -0.11 0.30 0.48 -0.14 0.17 -0.29 -0.09
MAX 77.00 80.00 84.00 90.00 102.00 107.00 111.00 107.00 107.00 99.00 90.00 77.00 107.00
MIN 58.00 57.00 59.00 61.00 68.00 87.00 90.00 93.00 90.00 78.00 67.00 58.00 95.00
NO YRS 54 54 53 54 54 53 53 53 54 52 52 54 43