SHASTA DAM, CALIFORNIA

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(048135)

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 52.00 56.00 47.00 43.00 38.00 29.00 29.00
1949 25.00 28.00 35.00 41.00 50.00 51.00 62.00 56.00 55.00 37.00 43.00 j 31.00 25.00
1950 25.00 27.00 35.00 a 37.00 35.00 b 48.00 62.00 57.00 52.00 43.00 41.00 31.00 25.00
1951 30.00 30.00 31.00 38.00 43.00 49.00 59.00 53.00 55.00 40.00 38.00 a 30.00 30.00
1952 28.00 30.00 32.00 39.00 40.00 45.00 61.00 61.00 j 50.00 47.00 36.00 33.00 28.00
1953 29.00 34.00 33.00 32.00 f 39.00 49.00 61.00 54.00 57.00 46.00 36.00 37.00 29.00
1954 33.00 35.00 32.00 42.00 47.00 49.00 63.00 52.00 51.00 48.00 35.00 30.00 30.00
1955 31.00 31.00 31.00 34.00 43.00 50.00 57.00 61.00 51.00 42.00 30.00 33.00 30.00
1956 31.00 27.00 29.00 39.00 42.00 50.00 57.00 59.00 50.00 39.00 40.00 31.00 27.00
1957 28.00 32.00 31.00 a 42.00 45.00 51.00 61.00 54.00 56.00 44.00 40.00 32.00 28.00
1958 33.00 35.00 32.00 36.00 48.00 51.00 57.00 a 67.00 53.00 50.00 35.00 39.00 32.00
1959 33.00 32.00 40.00 46.00 41.00 57.00 60.00 52.00 50.00 48.00 42.00 32.00 32.00
1960 29.00 37.00 37.00 36.00 40.00 60.00 59.00 56.00 53.00 a 48.00 37.00 35.00 29.00
1961 28.00 36.00 32.00 36.00 41.00 51.00 55.00 60.00 52.00 40.00 30.00 29.00 28.00
1962 19.00 21.00 29.00 41.00 42.00 51.00 58.00 49.00 50.00 44.00 34.00 33.00 19.00
1963 29.00 40.00 31.00 35.00 44.00 50.00 50.00 57.00 58.00 47.00 36.00 30.00 29.00
1964 33.00 35.00 33.00 38.00 36.00 47.00 55.00 57.00 48.00 49.00 36.00 31.00 31.00
1965 31.00 35.00 41.00 34.00 44.00 52.00 59.00 61.00 53.00 47.00 38.00 31.00 31.00
1966 31.00 34.00 30.00 43.00 52.00 48.00 56.00 55.00 51.00 46.00 37.00 31.00 30.00
1967 27.00 35.00 32.00 32.00 39.00 45.00 64.00 67.00 61.00 48.00 35.00 30.00 27.00
1968 26.00 33.00 40.00 41.00 40.00 52.00 63.00 54.00 51.00 45.00 32.00 30.00 26.00
1969 28.00 31.00 34.00 39.00 46.00 54.00 59.00 61.00 56.00 46.00 39.00 36.00 28.00
1970 32.00 37.00 34.00 36.00 39.00 48.00 61.00 60.00 51.00 42.00 37.00 32.00 32.00
1971 30.00 31.00 29.00 31.00 44.00 48.00 58.00 59.00 43.00 34.00 38.00 30.00 29.00
1972 28.00 31.00 34.00 35.00 44.00 47.00 59.00 54.00 51.00 39.00 38.00 20.00 20.00
1973 30.00 37.00 32.00 35.00 50.00 49.00 59.00 53.00 53.00 ----- z 35.00 36.00 30.00
1974 29.00 35.00 32.00 37.00 39.00 57.00 53.00 62.00 60.00 47.00 40.00 33.00 29.00
1975 30.00 32.00 31.00 32.00 40.00 47.00 58.00 53.00 62.00 40.00 30.00 34.00 30.00
1976 33.00 31.00 31.00 36.00 52.00 51.00 56.00 52.00 52.00 46.00 40.00 35.00 31.00
1977 27.00 34.00 33.00 43.00 40.00 54.00 61.00 54.00 50.00 46.00 30.00 32.00 27.00
1978 32.00 32.00 39.00 36.00 46.00 49.00 57.00 44.00 48.00 51.00 34.00 28.00 28.00
1979 29.00 32.00 36.00 40.00 40.00 50.00 58.00 55.00 52.00 41.00 35.00 32.00 29.00
1980 34.00 39.00 36.00 37.00 41.00 49.00 56.00 61.00 51.00 45.00 40.00 33.00 33.00
1981 32.00 32.00 37.00 42.00 43.00 51.00 58.00 57.00 48.00 40.00 34.00 37.00 32.00
1982 30.00 34.00 32.00 29.00 41.00 47.00 54.00 60.00 51.00 43.00 30.00 34.00 29.00
1983 31.00 33.00 a 38.00 33.00 40.00 53.00 55.00 58.00 55.00 51.00 36.00 31.00 31.00
1984 32.00 35.00 32.00 38.00 46.00 48.00 60.00 51.00 54.00 38.00 35.00 32.00 32.00
1985 7.00 31.00 31.00 40.00 43.00 49.00 57.00 59.00 46.00 44.00 ----- z 28.00 7.00
1986 39.00 36.00 m 34.00 41.00 37.00 56.00 60.00 ----- z 46.00 49.00 40.00 30.00 30.00
1987 28.00 33.00 32.00 44.00 47.00 52.00 55.00 57.00 56.00 52.00 38.00 31.00 28.00
1988 32.00 37.00 39.00 ----- z 41.00 55.00 r 58.00 54.00 54.00 49.00 33.00 29.00 29.00
1989 31.00 21.00 32.00 39.00 47.00 53.00 54.00 55.00 49.00 42.00 38.00 31.00 21.00
1990 34.00 28.00 34.00 48.00 45.00 45.00 60.00 57.00 57.00 50.00 37.00 14.00 14.00
1991 26.00 40.00 33.00 38.00 43.00 53.00 60.00 54.00 58.00 40.00 37.00 35.00 26.00
1992 28.00 38.00 41.00 44.00 53.00 49.00 58.00 60.00 58.00 49.00 38.00 31.00 28.00
1993 31.00 33.00 40.00 41.00 45.00 41.00 60.00 56.00 53.00 50.00 35.00 26.00 26.00
1994 37.00 33.00 35.00 40.00 43.00 52.00 60.00 62.00 56.00 49.00 34.00 30.00 30.00
1995 36.00 35.00 35.00 37.00 42.00 47.00 57.00 59.00 58.00 48.00 43.00 37.00 35.00
1996 27.00 32.00 38.00 38.00 47.00 53.00 61.00 56.00 53.00 42.00 37.00 33.00 27.00
1997 32.00 39.00 38.00 39.00 46.00 51.00 50.00 60.00 53.00 43.00 42.00 34.00 32.00
1998 31.00 32.00 36.00 37.00 42.00 52.00 61.00 61.00 51.00 49.00 39.00 25.00 25.00
1999 28.00 31.00 33.00 34.00 42.00 46.00 55.00 52.00 47.00 47.00 39.00 33.00 28.00
2000 34.00 37.00 34.00 44.00 43.00 55.00 60.00 58.00 52.00 46.00 31.00 39.00 31.00
2001 32.00 31.00 37.00 32.00 49.00 54.00 b 58.00 59.00 56.00 52.00 34.00 a 36.00 31.00
2002 29.00 33.00 33.00 36.00 45.00 53.00 64.00 58.00 55.00 46.00 39.00 32.00 29.00
2003 36.00 29.00 39.00 36.00 39.00 g 58.00 62.00 60.00 57.00 46.00 34.00 31.00 29.00
2004 32.00 31.00 37.00 42.00 ----- z 54.00 63.00 59.00 49.00 ----- z ----- z 34.00 31.00
2005 32.00 37.00 36.00 38.00 42.00 49.00 64.00 ----- z 54.00 ----- z 31.00 28.00 28.00
2006 35.00 33.00 30.00 38.00 47.00 53.00 63.00 j ----- z ----- z ----- z ----- z ----- z 30.00
Period of Record Statistics
MEAN 30.05 32.93 34.19 38.12 43.41 50.58 58.45 56.85 52.74 45.15 36.29 31.55 28.40
S.D. 4.51 3.84 3.25 3.87 3.93 3.53 3.26 4.10 3.90 4.12 3.33 4.04 3.82
SKEW -2.34 -0.78 0.47 0.11 0.40 0.18 -0.51 -0.18 0.09 -0.48 -0.27 -1.57 -1.64
MAX 39.00 40.00 41.00 48.00 53.00 60.00 64.00 67.00 62.00 52.00 43.00 39.00 35.00
MIN 7.00 21.00 29.00 29.00 35.00 41.00 50.00 44.00 43.00 34.00 30.00 14.00 14.00
NO YRS 58 57 58 56 56 57 58 55 58 55 55 58 47