PETALUMA FIRE STN 3, CALIFORNIA

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(046826)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z 45.00 a 46.00 37.00 25.00 28.00 24.00 24.00
1949 22.00 28.00 39.00 37.00 43.00 45.00 46.00 b 47.00 b 46.00 34.00 38.00 28.00 22.00
1950 24.00 25.00 29.00 38.00 36.00 42.00 47.00 45.00 39.00 38.00 38.00 37.00 24.00
1951 29.00 29.00 28.00 38.00 39.00 42.00 45.00 47.00 44.00 38.00 32.00 27.00 27.00
1952 26.00 32.00 33.00 37.00 36.00 42.00 50.00 46.00 45.00 41.00 30.00 34.00 26.00
1953 31.00 31.00 30.00 35.00 37.00 43.00 43.00 49.00 45.00 39.00 34.00 h 28.00 e 28.00
1954 26.00 d 31.00 28.00 33.00 36.00 40.00 43.00 41.00 41.00 35.00 26.00 27.00 26.00
1955 26.00 27.00 26.00 31.00 38.00 39.00 42.00 42.00 40.00 38.00 31.00 31.00 26.00
1956 28.00 25.00 30.00 34.00 37.00 41.00 45.00 43.00 42.00 34.00 27.00 23.00 23.00
1957 21.00 26.00 32.00 35.00 42.00 42.00 41.00 42.00 43.00 42.00 27.00 26.00 21.00
1958 29.00 31.00 30.00 36.00 37.00 47.00 45.00 48.00 a 41.00 38.00 28.00 24.00 24.00
1959 27.00 26.00 35.00 a 32.00 c 38.00 41.00 45.00 46.00 42.00 35.00 a 28.00 25.00 25.00
1960 22.00 29.00 33.00 32.00 37.00 44.00 46.00 42.00 42.00 39.00 32.00 27.00 22.00
1961 21.00 33.00 30.00 32.00 35.00 42.00 45.00 47.00 40.00 34.00 25.00 26.00 21.00
1962 23.00 27.00 31.00 37.00 38.00 41.00 43.00 41.00 42.00 42.00 34.00 24.00 23.00
1963 20.00 35.00 29.00 32.00 37.00 45.00 45.00 41.00 46.00 36.00 31.00 25.00 20.00
1964 25.00 28.00 29.00 29.00 35.00 41.00 42.00 42.00 42.00 41.00 25.00 26.00 25.00
1965 26.00 30.00 34.00 33.00 37.00 a 44.00 44.00 49.00 39.00 42.00 30.00 24.00 24.00
1966 26.00 28.00 26.00 35.00 38.00 40.00 45.00 43.00 44.00 36.00 29.00 26.00 26.00
1967 26.00 30.00 31.00 33.00 36.00 43.00 46.00 47.00 49.00 40.00 30.00 25.00 25.00
1968 23.00 31.00 32.00 35.00 36.00 45.00 42.00 49.00 45.00 38.00 31.00 23.00 23.00
1969 27.00 31.00 30.00 34.00 42.00 48.00 48.00 44.00 44.00 a 39.00 29.00 28.00 27.00
1970 26.00 32.00 35.00 33.00 40.00 46.00 47.00 45.00 39.00 33.00 36.00 28.00 26.00
1971 27.00 30.00 28.00 24.00 41.00 39.00 44.00 48.00 42.00 33.00 31.00 27.00 24.00
1972 26.00 25.00 32.00 32.00 41.00 42.00 45.00 47.00 45.00 36.00 32.00 19.00 19.00
1973 24.00 34.00 32.00 39.00 40.00 46.00 47.00 45.00 45.00 40.00 32.00 35.00 24.00
1974 28.00 32.00 32.00 35.00 38.00 45.00 48.00 48.00 46.00 39.00 31.00 25.00 25.00
1975 22.00 29.00 35.00 34.00 36.00 41.00 45.00 47.00 46.00 35.00 30.00 28.00 22.00
1976 23.00 27.00 28.00 31.00 39.00 41.00 49.00 50.00 48.00 41.00 29.00 25.00 23.00
1977 28.00 33.00 29.00 30.00 37.00 44.00 45.00 48.00 45.00 40.00 32.00 30.00 28.00
1978 34.00 36.00 39.00 37.00 42.00 47.00 49.00 48.00 43.00 41.00 28.00 21.00 21.00
1979 23.00 28.00 36.00 35.00 41.00 43.00 49.00 47.00 49.00 40.00 30.00 28.00 23.00
1980 29.00 32.00 35.00 36.00 40.00 42.00 47.00 48.00 45.00 38.00 30.00 26.00 26.00
1981 33.00 33.00 34.00 33.00 38.00 43.00 47.00 48.00 42.00 36.00 32.00 33.00 32.00
1982 26.00 26.00 31.00 33.00 38.00 33.00 44.00 43.00 42.00 37.00 31.00 25.00 25.00
1983 ----- z 34.00 34.00 33.00 36.00 41.00 41.00 47.00 46.00 42.00 33.00 32.00 32.00
1984 26.00 32.00 35.00 34.00 37.00 43.00 46.00 46.00 40.00 29.00 30.00 28.00 26.00
1985 26.00 24.00 30.00 38.00 27.00 35.00 40.00 45.00 37.00 35.00 26.00 24.00 24.00
1986 32.00 30.00 33.00 35.00 37.00 46.00 46.00 46.00 41.00 40.00 30.00 30.00 30.00
1987 27.00 29.00 33.00 39.00 44.00 46.00 46.00 36.00 45.00 45.00 30.00 29.00 27.00
1988 28.00 28.00 32.00 37.00 38.00 40.00 46.00 49.00 45.00 40.00 34.00 27.00 27.00
1989 28.00 18.00 34.00 37.00 41.00 45.00 46.00 47.00 46.00 36.00 33.00 29.00 18.00
1990 28.00 26.00 33.00 40.00 41.00 44.00 51.00 ----- z 47.00 ----- z ----- z ----- z 26.00
1991 23.00 34.00 34.00 37.00 39.00 43.00 47.00 p ----- z ----- z ----- z ----- z ----- z 23.00
1992 28.00 31.00 39.00 39.00 a 45.00 46.00 51.00 46.00 46.00 43.00 30.00 28.00 28.00
1993 25.00 32.00 35.00 39.00 40.00 44.00 47.00 47.00 41.00 42.00 23.00 26.00 23.00
1994 29.00 27.00 32.00 38.00 40.00 45.00 44.00 41.00 45.00 38.00 29.00 27.00 27.00
1995 33.00 32.00 34.00 38.00 42.00 44.00 48.00 44.00 46.00 37.00 37.00 35.00 32.00
1996 34.00 31.00 33.00 34.00 39.00 42.00 48.00 46.00 44.00 36.00 36.00 29.00 29.00
1997 26.00 34.00 31.00 35.00 40.00 47.00 49.00 50.00 48.00 38.00 38.00 29.00 26.00
1998 36.00 35.00 34.00 24.00 41.00 n 47.00 46.00 43.00 47.00 m 38.00 36.00 21.00 21.00
1999 27.00 d 30.00 35.00 33.00 40.00 ----- z 48.00 49.00 48.00 40.00 35.00 30.00 27.00
2000 29.00 33.00 ----- z 41.00 40.00 g 44.00 47.00 47.00 45.00 40.00 a 29.00 30.00 29.00
2001 28.00 ----- z 34.00 34.00 42.00 46.00 49.00 48.00 c 46.00 a 41.00 31.00 35.00 28.00
2002 26.00 30.00 30.00 35.00 40.00 42.00 48.00 48.00 45.00 33.00 33.00 32.00 26.00
2003 35.00 27.00 34.00 34.00 38.00 44.00 46.00 49.00 46.00 40.00 27.00 27.00 27.00
2004 28.00 31.00 39.00 37.00 44.00 45.00 47.00 49.00 43.00 37.00 28.00 27.00 27.00
2005 31.00 34.00 36.00 34.00 40.00 44.00 49.00 f 48.00 42.00 41.00 32.00 27.00 27.00
2006 32.00 28.00 31.00 37.00 40.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 28.00
Period of Record Statistics
MEAN 27.05 29.82 32.39 34.69 38.77 43.07 45.88 45.89 43.70 37.93 30.78 27.50 24.90
S.D. 3.64 3.35 3.07 3.30 2.89 2.83 2.45 2.88 2.86 3.53 3.38 3.65 2.95
SKEW 0.42 -0.71 0.18 -0.96 -0.83 -1.03 -0.19 -1.02 -0.36 -1.04 0.29 0.45 0.09
MAX 36.00 36.00 39.00 41.00 45.00 48.00 51.00 50.00 49.00 45.00 38.00 37.00 32.00
MIN 20.00 18.00 26.00 24.00 27.00 33.00 40.00 36.00 37.00 25.00 23.00 19.00 18.00
NO YRS 57 57 57 58 56 56 56 56 56 56 55 56 48