ALTURAS RANGER STATION, CALIFORNIA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(040161)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1905 ----- z ----- z ----- z 31.40 35.74 41.63 47.26 42.55 34.23 24.13 18.40 12.16 31.95
1906 18.03 26.75 ----- z 31.73 35.71 40.97 47.55 44.32 35.87 26.74 24.30 23.61 32.33
1907 13.97 31.00 26.65 34.30 37.16 39.83 44.52 40.84 36.10 37.42 23.33 26.74 32.65
1908 25.39 22.48 19.55 27.60 31.23 36.27 46.29 41.13 34.57 28.29 22.07 14.29 29.10
1909 23.10 25.29 25.39 24.40 30.68 40.97 39.81 38.81 36.07 30.35 29.03 16.65 30.04
1910 7.61 17.29 29.13 29.03 35.13 37.77 46.39 37.55 34.80 29.00 26.10 24.84 29.55
1911 14.10 9.54 25.55 27.93 31.19 40.53 45.42 38.71 30.40 26.55 21.30 9.71 26.74
1912 19.65 23.28 22.00 26.30 34.65 40.03 44.58 42.90 35.33 26.35 27.00 16.87 29.91
1913 7.55 3.50 22.19 30.60 37.32 42.73 47.52 48.45 38.27 28.03 29.17 17.10 29.37
1914 24.94 24.96 26.65 33.17 37.26 41.80 45.19 42.65 35.30 31.48 19.47 11.35 31.18
1915 20.52 27.18 27.42 32.27 36.42 39.57 45.26 43.40 a 34.60 25.10 22.20 23.03 31.41
1916 10.81 25.62 26.29 29.30 30.68 39.97 41.42 40.10 34.37 26.81 16.97 12.06 27.87
1917 -6.29 9.68 4.97 29.03 34.61 37.33 47.26 46.19 36.20 25.94 26.30 22.06 26.11
1918 20.81 21.43 25.58 24.50 33.35 42.73 42.19 39.58 40.17 32.84 22.53 11.97 29.81
1919 15.06 21.79 22.58 31.70 36.97 36.80 45.00 41.29 36.27 24.32 22.67 ----- z 30.40
1920 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1921 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1922 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1923 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z 37.38 j 41.07 b 45.90 41.55 32.55 a 24.87 14.80 17.52 b 31.18
1932 13.00 7.41 25.37 a 27.07 33.73 a 40.83 43.19 42.00 36.00 27.35 25.63 9.55 27.60
1933 9.52 2.48 a 26.45 27.93 33.48 42.37 47.35 44.35 32.20 29.74 20.60 23.50 a 28.33
1934 25.57 a 25.73 b 29.40 a 31.61 b 39.61 42.23 48.13 46.13 36.77 26.39 22.53 22.42 33.04
1935 16.68 23.54 22.55 31.63 36.16 42.60 43.03 39.69 e 33.27 h 24.96 d 18.64 b 19.30 a 28.98
1936 20.97 a 23.57 a 24.17 a 29.71 b 36.32 c 43.31 a 47.90 a 43.50 c 34.82 b 25.73 e 11.76 a 14.83 b 29.72
1937 -4.50 m 14.08 b 27.87 p 28.67 34.81 43.30 48.19 40.94 35.07 29.68 27.60 25.03 32.74
1938 25.84 20.64 24.87 33.03 36.81 44.87 47.10 40.32 36.90 31.32 19.00 17.84 31.54
1939 18.52 14.04 25.45 30.93 36.52 38.70 45.65 42.23 35.23 27.77 18.50 23.71 29.77
1940 25.97 30.24 29.39 31.40 38.55 43.87 42.73 a 41.71 37.60 33.48 26.67 23.39 c 33.75
1941 24.68 26.25 26.19 30.63 37.16 40.48 e 44.45 44.84 34.43 27.68 28.03 24.03 32.41
1942 15.23 a 23.79 21.74 27.40 34.45 39.97 43.19 40.35 40.30 29.97 24.80 24.13 30.44
1943 19.23 24.04 c 28.10 34.80 33.55 37.83 a 44.65 37.13 37.30 30.13 23.70 21.23 30.97
1944 12.26 25.24 21.84 29.27 33.13 39.67 43.68 36.71 34.10 29.81 24.80 21.94 29.37
1945 21.48 23.86 24.61 27.17 37.71 42.67 45.39 40.42 31.57 34.10 26.73 20.97 31.39
1946 15.03 19.64 27.06 30.97 35.39 38.43 45.39 42.58 33.13 25.90 23.13 20.68 29.78
1947 11.29 24.89 27.17 a 31.03 37.35 41.60 40.00 39.32 34.00 33.26 23.80 20.39 30.34
1948 18.52 15.71 a 22.52 29.27 35.16 42.10 41.81 39.23 34.13 28.19 18.70 6.48 27.65
1949 -8.71 9.96 28.17 a 30.07 b 39.32 42.03 43.52 39.65 37.07 25.87 25.32 b 13.16 27.12
1950 12.90 b 21.64 23.97 27.33 34.06 41.37 48.06 42.97 a 39.70 c 34.23 29.17 26.90 31.86
1951 20.19 22.04 21.52 31.83 36.39 42.87 42.68 44.06 36.93 30.22 d 24.96 e 16.67 a 30.86
1952 12.81 16.04 c 20.81 31.65 d 37.83 b 41.58 d 50.10 43.30 a 39.69 a 29.92 f 17.53 23.31 e 30.42
1953 25.18 i 21.35 e 22.63 d 26.56 e 33.50 c 38.61 b 43.23 e 42.50 i 39.11 b 28.71 c 29.70 18.52 h 31.49
1954 20.83 b 23.30 a 22.70 a 30.63 c 35.97 a 39.90 43.29 39.65 31.96 b 26.55 25.00 17.00 29.73
1955 6.07 b 14.07 23.00 27.05 j 33.81 41.83 41.19 39.71 35.67 27.55 i 21.15 d 24.43 a 28.09
1956 22.35 13.17 23.64 i 30.37 37.26 40.53 46.35 39.26 34.43 31.29 18.57 13.77 a 29.76
1957 5.59 d 20.61 28.61 29.03 37.29 42.40 42.26 37.39 38.23 32.35 21.43 21.48 29.72
1958 23.32 30.61 22.87 28.87 37.58 43.07 48.00 47.19 36.17 28.81 24.20 23.32 32.83
1959 24.97 19.68 23.35 27.60 33.26 42.40 44.81 40.16 34.93 27.29 13.47 8.23 28.35
1960 15.29 21.59 27.80 a 28.63 33.23 42.80 45.55 38.94 35.43 28.35 23.80 20.13 30.13
1961 15.48 26.11 25.87 27.10 32.23 a 43.27 42.35 44.81 31.93 28.23 18.27 18.71 29.53
1962 6.52 20.32 23.13 28.37 34.97 39.47 40.61 39.26 34.20 30.58 25.93 23.23 28.88
1963 9.97 31.75 24.94 27.30 39.61 40.93 38.68 37.87 38.93 30.26 27.07 18.19 30.46
1964 15.35 13.76 20.97 25.63 31.81 40.13 43.65 39.42 31.10 26.58 22.50 23.77 27.89
1965 19.61 20.36 20.71 32.63 33.45 40.67 40.52 f 43.29 33.40 27.24 b 26.72 e 13.90 b 28.36
1966 16.81 17.32 23.42 25.43 35.32 40.63 38.83 b 42.81 36.81 c 24.28 b 25.57 i 25.79 g 30.17
1967 17.96 c 20.75 22.71 25.04 b 33.06 41.07 44.32 44.58 38.73 25.58 25.70 7.84 28.95
1968 10.35 26.28 24.71 25.27 33.74 41.47 46.45 42.74 34.43 29.26 24.27 17.71 29.72
1969 17.32 19.21 22.42 27.60 37.23 46.27 43.65 39.10 37.40 26.87 21.80 21.55 30.03
1970 23.19 24.54 25.48 23.80 35.35 44.77 45.23 39.45 33.27 26.26 29.70 16.84 30.66
1971 18.65 20.79 21.55 28.03 34.74 38.57 44.90 44.26 31.00 26.13 21.63 15.94 28.85
1972 12.45 20.31 26.10 27.13 33.58 40.00 42.45 42.26 33.87 30.86 j 24.70 c 8.32 28.29
1973 14.77 22.93 23.35 25.97 35.06 37.50 44.52 38.97 a 34.67 26.14 b 28.40 25.43 q 30.21
1974 12.90 a 15.68 24.55 24.97 30.16 38.07 41.58 41.61 33.30 ----- z 23.63 c 22.95 k 28.64
1975 13.63 a 19.79 24.61 22.87 30.32 38.03 44.42 39.65 36.97 30.42 20.68 b 20.19 28.46
1976 19.39 20.93 18.42 26.07 31.84 35.97 43.52 40.06 37.20 21.88 n 20.07 6.81 27.30
1977 -3.52 13.32 20.74 26.83 31.52 45.10 42.94 46.06 36.67 30.26 21.43 21.87 27.77
1978 27.03 23.04 28.58 29.83 32.00 37.20 43.13 43.00 34.93 25.71 16.63 8.83 a 29.16
1979 11.84 21.11 24.90 28.13 34.00 36.74 c 43.03 41.94 35.77 32.44 f 19.40 20.68 c 28.87
1980 22.31 b 27.32 a 25.86 j 28.77 34.68 36.03 43.65 39.13 35.93 28.48 22.03 18.23 30.60
1981 21.29 19.00 24.42 28.57 34.78 d 40.83 a 42.97 41.55 36.80 29.32 27.90 26.00 a 31.12
1982 11.94 16.50 23.68 23.40 32.90 a 40.87 42.65 42.77 36.10 28.06 20.57 19.10 28.21
1983 22.55 27.36 30.10 26.27 33.26 38.37 39.74 46.19 35.37 29.87 28.13 23.35 31.71
1984 18.23 20.24 26.65 27.90 34.13 37.53 46.19 41.03 35.07 26.97 24.37 14.77 29.42
1985 13.16 13.54 18.97 27.83 30.77 43.87 46.77 38.74 35.37 24.71 12.47 15.29 26.79
1986 28.03 28.82 29.06 29.27 33.16 43.47 42.68 44.03 34.77 27.19 21.73 18.13 31.70
1987 15.42 22.29 25.10 27.50 37.77 42.27 42.10 41.94 33.83 29.74 24.57 15.45 29.83
1988 11.94 17.69 22.39 31.23 32.61 41.53 47.19 42.74 34.23 27.87 26.73 13.68 29.15
1989 4.32 5.61 28.61 29.37 32.84 41.20 40.13 41.94 36.30 27.13 18.47 14.29 26.68
1990 19.42 13.32 25.13 32.20 34.16 38.53 47.03 45.84 36.17 26.32 18.80 5.19 28.51
1991 12.94 23.11 24.74 27.93 33.52 37.60 42.19 43.42 36.20 28.03 25.93 17.48 29.42
1992 18.61 24.72 25.26 31.27 36.16 45.30 45.19 41.26 35.03 26.68 23.50 9.58 30.21
1993 7.68 16.64 31.87 30.50 35.90 38.53 38.55 43.10 34.50 30.74 13.83 17.03 28.24
1994 19.42 16.79 23.81 28.67 38.55 38.97 48.19 40.32 36.30 24.68 16.57 15.10 28.95
1995 26.42 23.50 28.29 28.37 37.94 41.93 45.87 40.68 38.47 26.58 27.00 26.65 32.64
1996 23.19 23.45 23.43 a 29.30 34.81 40.70 47.68 42.23 34.67 28.61 25.20 25.71 31.58
1997 20.55 21.61 24.97 28.50 35.68 40.83 42.81 40.29 36.30 27.68 27.47 16.42 30.26
1998 27.06 25.68 25.87 27.83 35.45 40.53 45.87 41.74 40.87 27.35 25.97 14.74 31.58
1999 17.68 21.43 22.55 b 27.17 a 30.94 37.70 40.35 41.97 34.03 25.32 26.48 a 15.52 28.43
2000 22.68 27.17 24.47 a 29.52 c 36.19 d 40.93 41.84 39.26 d 34.37 28.36 c 19.63 19.66 b 30.34
2001 16.24 b 18.86 25.10 25.48 c 33.74 38.10 43.23 40.68 35.10 28.58 23.24 a 25.32 29.47
2002 18.39 23.18 21.77 30.67 34.03 40.53 47.42 40.65 35.37 22.84 22.23 25.03 30.18
2003 29.03 20.50 28.26 28.77 35.75 c 41.47 46.71 42.90 b 34.53 29.75 c 19.92 e ----- z 32.51
2004 21.16 22.45 25.84 27.53 34.00 39.50 44.58 43.29 31.41 c 29.10 19.23 16.12 f 30.74
2005 15.77 e 20.29 22.58 26.62 d 36.06 35.80 44.86 i 39.77 29.88 d 22.45 k 19.95 h 18.42 27.24
2006 20.20 f 14.17 e 21.90 29.53 34.32 40.43 44.35 36.84 27.00 v ----- z 24.85 q 14.85 e 29.55
2007 7.31 e 18.82 f 20.07 b 24.58 f 30.09 i 32.70 g 40.22 h 38.11 m 31.11 k 23.04 d 17.30 g 15.09 h 16.80
2008 6.56 f 8.43 h ----- z 19.27 d 34.55 i 38.14 h 44.75 g 41.60 z 36.10 i 28.62 g 47.00 z 10.48 j 19.27
2009 17.50 k 21.61 j 21.86 j 27.17 g 34.24 n 41.67 f 45.00 h 40.79 l 35.33 i 28.24 j 25.26 k 5.40 u 9999.00
2010 28.29 q 25.15 h 22.17 h 26.27 h 30.40 k 40.91 h 47.14 j 43.45 i 36.10 i 33.55 k 22.15 j 27.19 j 9999.00
2011 17.70 k 19.00 h 28.83 h 27.29 i 33.50 i 40.05 h 46.73 p 44.78 h 40.00 h 29.52 j 25.29 i 14.38 j 9999.00
2012 17.95 k 20.40 i 25.00 i 33.90 i 36.09 i 38.86 i 47.10 j 44.52 h 38.53 k 30.77 a 27.77 21.27 a 26.60
2013 8.50 a 19.57 23.97 39.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z -6.00 z 17.35
Period of Record Statistics
MEAN 16.43 20.47 24.39 28.62 34.80 40.59 44.30 41.55 35.39 28.18 22.84 18.10 29.79
S.D. 7.23 5.88 3.43 2.64 2.23 2.29 2.52 2.44 2.21 2.66 4.12 5.42 1.64
SKEW -0.94 -0.82 -1.92 -0.39 -0.01 -0.03 -0.20 0.36 0.05 0.68 -0.53 -0.42 0.09
MAX 29.03 31.75 31.87 34.80 39.61 46.27 50.10 48.45 40.87 37.42 29.70 26.90 33.75
MIN -8.71 2.48 4.97 19.27 30.16 35.80 38.55 36.71 29.88 22.84 11.76 5.19 26.11
NO YRS 88 90 87 90 90 91 89 90 89 85 89 85 69