SAINT HELENA, CALIFORNIA

Monthly Average Temperature (Degrees Fahrenheit)

(047643)

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
1931 ----- z 50.50 i 55.68 58.95 63.32 65.83 72.13 68.42 63.42 57.55 50.02 43.97 59.93
1932 44.97 47.41 55.46 c 54.52 62.48 67.92 70.35 g 69.87 67.90 60.48 57.84 a 41.18 c 57.28
1933 41.11 46.68 52.60 55.93 55.53 a 63.98 70.44 70.03 65.30 63.40 56.08 46.56 57.30
1934 48.73 50.27 58.81 58.65 63.48 65.68 68.82 69.52 66.37 60.68 53.92 47.32 59.35
1935 45.35 48.70 47.42 55.75 59.87 69.57 68.60 69.11 65.55 58.92 50.75 47.02 57.22
1936 49.02 49.17 54.13 56.34 a 62.73 67.52 70.18 71.13 67.10 62.02 52.65 45.32 58.94
1937 37.82 46.66 52.56 53.55 62.69 66.86 a 70.61 70.29 66.27 62.34 55.30 50.47 57.95
1938 45.76 48.39 49.44 54.78 62.90 67.68 70.45 68.79 67.85 59.27 52.15 49.31 58.06
1939 46.45 46.98 52.63 60.62 63.29 67.33 71.47 69.76 69.65 61.39 54.40 50.37 59.53
1940 49.03 51.84 54.68 57.93 64.10 69.52 69.44 69.52 65.13 61.29 52.00 50.34 59.57
1941 48.95 51.27 54.90 54.93 62.31 66.02 71.82 69.29 66.70 59.40 54.03 47.89 58.96
1942 47.11 48.89 51.21 55.20 58.94 67.68 71.19 69.73 65.22 60.79 51.88 47.31 57.93
1943 48.13 50.66 53.68 57.95 64.58 64.48 70.11 69.31 68.88 60.26 54.20 48.73 59.25
1944 46.34 48.17 53.85 53.57 61.87 65.05 69.19 69.90 69.12 61.37 50.57 49.50 58.21
1945 45.66 50.84 48.71 58.67 59.47 a 68.95 72.58 69.52 68.25 62.10 51.78 47.63 58.68
1946 45.89 45.44 b 51.27 56.85 61.29 65.68 71.27 69.74 67.37 58.90 50.72 46.98 57.62
1947 42.29 51.05 54.27 59.97 64.92 68.05 69.26 69.13 68.88 60.50 50.48 45.39 58.68
1948 49.76 46.45 48.47 52.08 58.39 67.00 69.42 68.82 66.43 60.53 52.08 41.98 56.78
1949 39.19 44.82 51.06 59.38 61.69 68.13 69.73 68.00 68.50 59.31 56.53 44.84 57.60
1950 41.68 48.98 50.61 58.60 62.55 65.93 71.95 72.45 67.98 60.82 57.18 49.98 59.06
1951 46.15 48.57 52.69 56.12 62.77 66.33 70.11 69.15 67.53 60.15 52.72 45.42 58.14
1952 43.13 48.38 49.35 57.70 63.02 63.45 72.15 70.37 69.33 62.11 50.72 47.61 c 58.11
1953 50.85 51.30 51.76 54.95 a 57.73 64.72 71.74 68.42 69.35 60.23 53.55 49.95 j 59.51
1954 46.23 50.09 49.19 58.52 63.04 c 66.82 b 72.18 i 67.05 65.73 59.94 52.35 44.77 56.70
1955 43.26 47.17 b 52.02 51.12 62.79 66.08 69.25 g 69.23 c 68.37 61.76 52.58 49.34 56.70
1956 47.45 46.86 52.10 55.59 a 61.45 a 67.68 b 71.33 g 69.16 67.60 59.24 55.43 46.89 57.22
1957 42.59 b 51.18 53.05 57.66 a 60.59 b 70.70 b 70.92 69.15 67.60 58.78 a 51.37 47.24 58.40
1958 47.42 53.14 48.60 57.20 63.31 67.23 70.76 73.43 a 71.52 64.12 a 55.55 52.74 60.42
1959 49.42 47.27 o 55.86 c 61.67 61.20 k 70.62 a 72.94 71.12 b 67.38 66.50 f 54.23 48.03 61.25
1960 46.08 50.76 d 54.73 56.62 61.27 71.10 72.34 70.69 d 67.59 b 61.33 e 51.30 46.98 59.23
1961 45.92 e 51.57 51.94 g 57.32 59.03 70.15 j 73.96 c 72.23 67.48 62.54 d 52.28 45.65 58.80
1962 46.81 48.23 49.73 60.23 60.18 67.15 69.08 70.15 66.32 61.42 54.50 47.61 58.45
1963 43.47 55.91 50.24 51.93 60.87 66.43 68.92 70.68 70.30 61.71 51.75 44.03 58.02
1964 44.84 50.55 50.68 56.22 58.90 65.82 71.05 71.03 67.60 64.45 50.77 50.18 58.51
1965 46.77 49.88 52.45 56.05 61.13 64.08 69.16 70.89 63.83 64.45 53.73 42.26 57.89
1966 46.44 47.27 53.03 61.48 62.48 69.08 68.29 71.84 68.15 63.05 53.72 47.40 59.35
1967 48.03 50.82 49.97 47.42 62.00 65.58 71.50 72.47 70.02 63.94 56.48 46.77 58.75
1968 44.58 54.40 54.02 58.65 60.89 69.40 71.00 69.34 69.22 60.90 52.48 44.27 59.10
1969 43.85 45.93 51.89 54.83 64.26 65.88 70.85 72.55 69.10 60.18 53.97 49.94 58.60
1970 49.45 52.46 54.65 53.93 64.53 66.92 71.26 68.69 69.05 58.84 54.73 45.73 59.19
1971 47.08 49.21 50.58 54.27 59.00 66.30 70.56 71.63 68.18 58.06 51.92 43.84 57.55
1972 43.47 50.57 56.65 56.17 62.35 68.02 71.95 69.87 65.15 59.61 49.48 42.15 57.95
1973 45.10 51.04 49.69 58.07 64.24 70.50 70.63 68.52 67.55 61.48 51.32 48.77 58.91
1974 46.74 48.27 52.77 55.17 62.00 68.65 71.37 70.90 67.73 62.76 52.32 46.50 58.77
1975 45.34 49.41 51.11 51.20 64.02 66.70 69.06 69.79 67.53 58.68 49.87 48.10 57.57
1976 47.65 49.78 50.98 54.77 64.81 68.65 70.89 68.34 67.27 63.00 56.62 48.00 59.23
1977 44.82 51.71 50.24 59.53 57.85 69.40 71.32 72.23 66.87 62.05 54.18 51.13 59.28
1978 49.77 50.82 56.92 54.40 65.06 68.35 71.52 69.90 67.90 64.10 51.27 43.94 59.50
1979 46.02 47.79 b 53.65 55.50 63.35 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 53.26
1980 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 55.92 50.00 c 52.96
1981 ----- z 51.71 52.78 a 60.20 65.65 ----- z 71.47 74.44 70.32 59.52 56.07 50.60 b 61.27
1982 44.00 51.98 49.97 56.28 64.34 65.32 69.82 ----- z 67.98 62.02 50.05 47.61 57.22
1983 46.81 52.68 52.97 55.18 63.35 69.20 70.94 71.84 70.35 63.92 51.07 50.56 59.91
1984 52.02 b 49.78 56.97 56.68 67.69 69.08 74.00 71.52 ----- z 59.52 ----- z ----- z 61.92
1985 44.27 53.09 50.71 62.43 ----- z ----- z 74.45 69.44 65.03 61.85 49.92 43.40 57.46
1986 ----- z 54.16 ----- z 58.42 ----- z 69.33 70.79 71.13 63.23 62.69 55.93 47.00 61.41
1987 ----- z 50.86 52.68 62.65 66.73 a ----- z ----- z ----- z 68.90 ----- z ----- z ----- z 60.36
1988 ----- z ----- z ----- z 58.77 62.84 67.85 ----- z 71.48 68.87 63.18 52.52 48.32 61.73
1989 46.00 45.64 52.90 61.75 63.37 67.82 72.69 70.45 66.23 60.31 54.27 45.87 58.94
1990 46.50 46.61 54.16 62.12 ----- z 69.68 72.74 72.00 69.55 64.55 53.80 42.98 59.52
1991 47.69 54.41 49.56 56.58 61.35 66.48 ----- z 69.79 70.10 a 65.34 56.13 47.16 58.60
1992 44.63 53.81 54.77 61.42 68.52 68.12 72.74 ----- z 69.93 65.11 55.13 43.90 59.83
1993 45.97 48.71 57.05 57.41 a 63.08 71.13 72.23 73.13 69.18 63.37 52.93 45.79 60.00
1994 48.98 47.45 55.92 59.13 63.15 69.22 69.31 72.03 68.62 61.65 47.68 44.68 58.98
1995 50.63 54.50 52.60 57.60 61.08 67.88 73.05 73.69 69.65 65.03 58.33 50.92 61.25
1996 48.34 52.69 55.37 59.08 64.39 70.17 75.79 74.39 68.33 62.73 55.98 50.77 61.50
1997 49.56 53.05 57.35 61.05 68.85 70.97 72.84 72.68 72.25 62.68 55.17 48.50 62.08
1998 49.18 48.77 54.39 56.40 ----- z 65.52 ----- z 72.81 69.50 60.79 51.25 45.82 57.44
1999 47.13 48.20 50.24 56.45 a 61.03 66.72 69.29 69.98 a 68.70 63.69 b 55.75 ----- z 59.74
2000 50.33 a 52.21 55.93 a 60.57 c 64.69 b 70.57 69.97 a 71.56 69.83 a 61.29 50.58 50.55 60.67
2001 47.77 49.59 57.73 56.10 a 70.17 a 70.79 a 70.79 71.50 68.28 a 65.81 56.08 49.56 61.18
2002 47.61 53.32 54.29 58.97 62.44 70.12 71.71 70.74 68.98 62.55 56.62 49.87 60.60
2003 53.74 51.86 56.84 53.50 63.34 69.68 74.00 71.32 71.02 65.78 a 50.73 49.10 60.91
2004 48.76 51.21 h 61.68 60.58 64.13 70.09 g 70.35 72.53 71.14 e 60.63 53.35 48.69 61.18
2005 ----- z 53.04 56.69 57.08 63.15 66.97 74.03 71.40 66.42 62.66 56.38 50.58 61.67
2006 50.02 53.00 48.85 56.25 64.73 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 54.57
Period of Record Statistics
MEAN 46.55 50.10 52.95 57.08 62.68 67.69 71.15 70.59 67.99 61.65 53.30 47.28 58.97
S.D. 2.84 2.54 2.85 2.92 2.57 1.94 1.59 1.58 1.85 1.96 2.35 2.61 1.17
SKEW -0.42 0.03 0.40 -0.39 0.14 -0.07 0.50 0.45 -0.38 0.16 0.06 -0.31 0.70
MAX 53.74 55.91 61.68 62.65 70.17 71.13 75.79 74.44 72.25 65.81 58.33 52.74 62.08
MIN 37.82 44.82 47.42 47.42 55.53 63.45 68.29 67.05 63.23 57.55 47.68 41.18 56.78
NO YRS 69 71 72 75 70 68 65 70 72 71 72 70 51