WHITE SWAN, WASHINGTON

Monthly Average Temperature (Degrees Fahrenheit)

(459191)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 198107
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
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 50.72 k 41.97 22.92 s 41.97
1928 29.50 36.22 45.11 48.03 60.23 63.00 72.69 67.84 61.60 51.82 38.77 30.40 50.44
1929 17.32 21.73 44.97 46.78 55.68 63.00 68.61 69.61 58.95 53.08 35.80 33.79 47.44
1930 12.56 39.27 46.97 55.33 c 54.90 b 60.03 a 68.07 d 69.73 60.00 44.00 ----- z ----- z 51.09
1931 ----- z ----- z 42.50 w 51.33 61.06 64.79 a 69.98 d 69.12 g 62.62 d 52.78 o ----- z ----- z 61.96
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 63.46 s 61.10 a ----- z 44.24 k 28.90 45.00
1933 32.69 ----- z 42.71 b 52.98 a 55.32 q 64.28 69.08 69.02 56.27 54.68 c 43.70 b 43.11 52.85
1934 39.42 41.36 g ----- z 60.19 f 61.13 63.75 67.58 69.03 a 59.00 54.42 a 45.17 36.60 55.12
1935 34.23 38.20 42.60 50.90 56.29 63.02 69.85 67.16 66.47 n 51.40 35.47 a 32.50 49.24
1936 35.82 25.62 40.42 y 47.86 s 61.82 a 66.32 69.19 68.95 a 61.11 b 54.16 c 34.44 e 35.37 51.28
1937 13.94 28.77 45.44 49.41 a 57.05 a 64.05 71.41 d 65.84 62.81 a 57.00 u 43.68 35.68 48.92
1938 33.95 35.07 a 43.27 52.63 57.62 c 66.72 73.53 a 66.58 a 66.77 ----- z 36.82 34.98 51.63
1939 35.21 34.50 44.87 a 53.10 59.27 61.18 b 70.13 a 68.94 62.07 55.05 i 39.34 k 37.90 52.72
1940 30.07 c 37.68 a 48.58 51.90 60.27 65.76 a 70.48 b 68.90 a 63.67 a 59.05 u 34.98 33.98 51.48
1941 33.13 38.72 a 48.40 53.27 57.73 63.45 a 73.50 a 69.25 a 59.25 h ----- z 40.46 c 34.50 51.24
1942 25.35 37.30 44.60 b 55.08 57.53 63.05 70.92 a 71.85 63.90 53.17 g 37.05 29.73 50.58
1943 22.39 36.98 42.06 53.07 54.34 60.95 69.08 65.87 64.37 52.52 a 39.74 c 32.26 49.47
1944 28.82 35.95 41.48 50.43 a 58.27 64.50 71.05 68.40 64.80 56.97 ----- z 28.98 c 51.79
1945 35.32 38.59 42.55 a 49.68 ----- z 74.75 z 75.04 c 75.37 d 63.63 56.72 h 40.48 d 31.64 j 52.58
1946 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1947 24.75 z 39.21 46.97 b 54.55 63.84 b 63.31 a 69.53 65.81 j 67.20 o 51.24 40.25 34.44 e 51.48
1948 ----- z ----- z ----- z ----- z ----- z 67.45 66.50 c 65.41 b 58.68 b 48.72 b 37.41 m 24.02 h 61.35
1949 13.98 32.41 e 42.35 d 52.67 59.95 c 61.84 a 67.05 a 68.02 c 64.65 q 46.03 l 43.85 33.08 r 49.12
1950 13.48 c 29.48 41.48 47.33 55.27 a 64.10 70.02 a 70.32 63.18 49.52 39.15 36.28 d 48.30
1951 31.81 37.86 40.83 h 52.07 57.16 63.08 67.00 65.96 e 66.94 u ----- z ----- z 24.86 m 53.56
1952 23.24 36.31 43.16 53.17 60.03 63.98 a 71.08 a 69.79 65.12 a 59.10 j 39.00 m 32.59 o 53.99
1953 42.06 41.43 44.44 48.95 55.35 60.13 69.43 a 68.76 61.98 a 53.87 43.64 e ----- z 53.64
1954 29.28 a 36.18 40.59 c 49.52 a 59.05 61.45 a 67.58 66.00 61.32 49.53 45.16 h 34.90 u 52.05
1955 30.19 36.31 a 38.47 45.43 54.15 63.93 65.94 66.50 ----- z 50.46 r 32.33 27.15 a 46.04
1956 29.11 24.84 42.12 a 52.78 61.00 61.69 a 71.38 a 68.25 a 62.25 b 49.18 a 34.78 a 23.00 z 50.67
1957 14.96 d 34.80 42.65 n 52.64 a 61.94 65.18 66.79 c 64.09 d 63.70 c 46.06 f 36.33 u 37.32 a 51.27
1958 36.53 a 44.29 42.37 a 49.41 a 64.26 ----- z 77.75 q 71.82 c 60.27 b 51.69 35.52 h 34.16 f 52.58
1959 31.89 36.37 a 44.62 b 51.43 c 53.70 c 63.73 b 69.62 b 64.32 58.37 50.92 f 35.04 c 31.52 a 49.15
1960 22.63 37.15 b 41.70 a 49.83 a 54.95 a 64.36 a 72.84 66.53 61.40 a 51.83 b 39.75 29.56 o 51.18
1961 35.50 c 42.14 44.77 49.87 58.29 c 68.50 b 72.78 a 73.98 58.12 a 48.20 c 35.47 j 32.76 53.17
1962 31.03 36.21 40.50 b 53.45 53.93 a 62.25 b 67.65 a 66.93 b 63.12 a 49.90 b ----- z 37.55 b 51.14
1963 26.05 b 36.79 44.31 d 48.28 a 57.48 b 63.89 b 65.67 d 68.92 a 65.73 b 52.23 a 41.40 27.25 w 51.89
1964 35.44 e 38.31 41.93 b 48.00 a 55.78 a 61.69 c 66.76 b 64.91 b 58.12 50.04 c 42.31 v 23.81 e 49.53
1965 ----- z ----- z 39.68 t 53.06 d 55.31 63.64 b 70.27 a 68.95 a 57.63 ----- z ----- z ----- z 61.48
1966 ----- z ----- z ----- z ----- z 58.28 d 60.56 c 66.48 a 67.57 a 63.86 b 50.45 c 41.70 b 37.12 a 55.75
1967 39.54 g 41.39 43.10 b 45.28 56.77 66.55 a 69.48 71.88 b 68.12 52.33 b 40.50 b 32.05 b 53.41
1968 32.60 a 40.00 46.44 48.28 e 57.44 64.13 71.23 65.50 62.82 47.24 40.45 29.50 50.47
1969 19.95 b 30.61 43.62 a 50.00 a 59.75 a 69.26 a 69.53 n 66.23 62.07 48.95 40.77 33.66 b 47.71
1970 30.16 42.04 45.45 49.18 58.31 b 69.48 b 70.79 69.48 57.58 49.22 b 41.39 b 30.34 51.12
1971 37.24 39.73 40.24 49.81 d 60.67 m 59.90 71.06 71.74 h 55.77 48.23 38.72 c 30.92 47.16
1972 31.45 33.52 44.61 45.98 59.16 64.45 68.93 c 70.04 c 57.05 49.14 b 39.88 e 25.71 c 49.16
1973 29.25 a 37.00 a 45.55 51.05 58.63 63.98 a 70.40 67.07 b 60.31 a 49.34 37.07 36.85 50.54
1974 27.06 39.91 43.79 51.27 55.35 66.70 68.98 70.81 64.72 51.50 42.40 36.80 a 51.61
1975 32.48 33.23 41.19 47.40 57.76 64.07 74.16 66.33 a 63.02 50.42 39.80 33.84 50.31
1976 34.00 37.03 40.87 48.92 57.66 60.59 a 67.61 i 66.02 h 65.72 50.94 40.60 30.89 46.72
1977 23.31 39.20 44.53 55.46 c 54.55 68.80 70.60 e 65.21 x 58.62 50.98 38.75 35.68 49.13
1978 33.42 38.52 b 47.92 51.52 56.92 67.05 71.63 69.31 61.80 e 51.89 34.64 e ----- z 53.15
1979 16.18 34.81 o 46.60 51.80 60.95 66.90 71.77 c 70.65 66.25 55.34 35.65 36.52 52.60
1980 22.18 31.83 43.58 54.50 l 59.53 a 62.70 c 68.85 66.06 e 61.52 50.05 l 39.27 q 31.50 r 52.03
1981 36.97 p ----- z 47.71 j 48.87 o ----- z 63.22 g 69.38 b ----- z ----- z ----- z ----- z ----- z 69.38
Period of Record Statistics
MEAN 28.36 36.11 43.74 50.70 57.99 64.02 69.83 68.32 61.76 51.00 39.22 33.32 49.89
S.D. 7.60 4.65 2.31 2.59 2.60 2.43 2.21 2.42 2.93 2.54 3.18 3.89 1.29
SKEW -0.64 -1.16 0.14 -0.19 0.33 0.41 0.17 0.61 -0.11 -0.06 -0.23 -0.21 -0.62
MAX 42.06 44.29 48.58 55.46 64.26 69.48 75.04 75.37 68.12 56.97 45.17 43.11 51.61
MIN 12.56 21.73 38.47 45.28 53.70 59.90 65.67 64.09 55.77 44.00 32.33 23.81 47.44
NO YRS 45 44 43 46 47 49 49 46 46 35 37 36 10