WHITE SWAN, WASHINGTON

Monthly Average Maximum 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 63.65 k 52.50 31.83 s 52.50
1928 36.42 46.97 58.16 61.00 79.35 79.57 92.29 87.68 80.53 66.48 49.00 38.81 64.69
1929 25.87 34.21 58.97 62.07 74.03 78.77 87.94 90.39 76.90 70.94 51.47 44.32 62.99
1930 25.65 49.57 60.68 75.48 c 71.26 77.23 89.25 c 90.13 77.80 60.13 ----- z ----- z 67.72
1931 ----- z ----- z 52.62 w 67.20 79.42 81.53 90.07 d 86.21 g 74.92 d 70.44 o ----- z ----- z 78.63
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 82.72 b 77.77 ----- z 53.58 k 40.06 66.85
1933 40.94 ----- z 54.34 b 72.07 69.86 i 83.90 89.74 89.06 70.80 71.54 c 55.43 b 51.58 67.94
1934 45.58 49.83 d ----- z 75.50 f 76.23 81.00 85.81 88.33 a 75.50 65.97 a 52.83 42.68 66.38
1935 44.26 48.54 55.81 66.60 74.16 79.20 87.65 86.45 86.19 n 68.13 46.00 a 38.35 63.19
1936 42.94 36.45 51.50 y 62.55 s 77.97 a 81.33 88.26 89.10 a 79.21 b 71.93 c 47.96 e 45.03 66.02
1937 24.71 39.89 56.23 61.62 a 72.03 a 78.20 89.27 a 82.94 79.90 a 69.10 u 52.33 41.97 61.73
1938 40.48 42.96 a 54.35 66.93 73.93 c 82.97 91.40 a 85.07 a 83.53 ----- z 49.13 44.45 65.02
1939 43.87 44.43 58.37 a 68.90 75.77 77.77 88.27 a 88.26 78.50 69.55 i 54.42 k 45.87 67.00
1940 36.10 46.76 61.16 65.03 76.26 84.67 87.93 b 86.47 a 77.62 a 71.60 u 43.90 41.94 64.35
1941 38.65 49.25 63.26 68.40 71.58 78.34 a 91.68 84.33 a 72.21 f ----- z 49.85 c 40.23 63.56
1942 32.42 46.11 57.66 b 66.93 69.87 76.83 88.53 a 90.29 82.17 68.00 g 43.43 37.16 62.85
1943 31.35 45.32 54.00 66.67 69.39 75.77 88.13 83.77 82.83 65.74 46.93 c 40.39 62.52
1944 38.00 44.55 55.10 64.38 a 73.97 80.00 89.39 86.19 81.40 72.13 ----- z 33.82 c 65.36
1945 41.55 47.93 53.03 a 63.80 ----- z 82.50 x 92.18 c 92.07 d 78.23 71.96 f 49.15 d 38.32 i 64.74
1946 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1947 29.00 z 50.86 61.40 a 69.93 81.00 a 77.37 85.68 82.86 j 78.97 61.58 50.53 43.18 c 66.05
1948 ----- z ----- z ----- z ----- z ----- z 83.63 83.96 c 81.86 b 75.54 b 64.69 b 48.29 m 32.96 h 77.94
1949 26.10 41.78 e 53.52 d 68.83 77.18 c 80.69 a 85.70 a 86.46 c 83.62 q 63.37 l 55.53 43.15 r 63.98
1950 25.57 c 38.57 51.94 60.60 71.40 a 77.63 88.53 a 87.94 81.90 60.55 48.53 41.56 d 61.23
1951 39.45 48.57 53.91 h 70.87 73.00 79.33 85.84 85.12 e 83.44 u ----- z ----- z 30.89 m 68.88
1952 32.00 45.38 55.58 70.03 76.58 78.79 a 90.20 a 87.13 83.21 a 76.57 j 52.59 m 38.25 o 68.77
1953 49.35 52.93 57.45 61.40 69.32 74.70 88.63 a 84.81 79.66 a 68.97 54.36 e ----- z 67.42
1954 37.43 a 43.18 53.59 b 63.66 a 75.48 75.62 a 85.55 82.35 76.90 63.81 55.14 h 43.60 u 65.76
1955 36.00 47.89 a 50.84 58.13 69.84 82.97 82.90 88.81 ----- z 63.38 r 40.80 34.73 a 59.29
1956 36.74 33.31 52.90 a 69.73 77.61 76.97 90.67 a 88.48 80.38 a 63.20 a 46.48 a 36.75 z 65.13
1957 25.59 d 45.61 52.72 m 67.28 a 77.74 82.97 86.28 b 84.07 c 83.52 c 60.08 f 49.22 u 47.03 a 66.68
1958 44.70 a 52.89 54.67 a 63.59 a 82.94 85.26 c 94.18 c 91.83 b 76.86 a 68.81 48.59 h 40.88 e 68.78
1959 40.26 45.56 a 56.57 a 68.32 b 70.48 b 79.86 b 89.55 b 84.00 72.40 66.36 f 48.19 c 41.07 a 63.30
1960 32.77 48.30 b 55.43 a 64.69 a 69.10 a 82.24 a 93.90 84.06 79.38 a 67.07 b 50.37 38.12 o 66.12
1961 44.25 c 52.21 56.52 63.87 71.79 b 87.43 b 92.30 a 93.68 76.00 a 64.04 c 46.80 j 41.52 67.60
1962 41.77 46.36 53.17 b 68.97 68.30 a 81.67 88.39 84.10 b 80.86 a 63.62 b ----- z 44.86 b 65.64
1963 36.72 b 47.43 57.61 c 60.41 a 74.17 b 81.21 b 82.56 d 86.97 a 82.71 b 66.17 a 51.03 32.25 w 66.09
1964 44.44 d 53.59 55.38 b 64.41 a 74.03 a 77.85 c 85.55 b 82.66 b 75.77 67.11 c 56.00 v 33.77 e 64.96
1965 ----- z ----- z 54.93 q 68.89 b 73.48 81.54 b 89.93 a 85.77 a 76.63 ----- z ----- z ----- z 79.37
1966 ----- z ----- z ----- z ----- z 74.41 d 76.07 c 82.33 a 85.27 a 79.68 b 65.96 c 53.21 b 45.80 a 70.34
1967 49.71 g 54.43 55.52 b 56.73 72.58 82.93 a 89.32 93.62 b 86.37 65.72 b 53.29 b 43.17 b 68.52
1968 42.77 a 52.41 58.58 62.88 e 72.23 79.67 89.03 79.42 77.20 60.58 49.40 38.29 63.54
1969 28.72 b 39.71 56.37 a 63.07 a 75.58 85.00 a 87.41 n 84.90 77.00 63.48 52.07 38.13 a 60.37
1970 37.32 50.86 57.16 60.57 75.41 b 86.34 a 88.42 88.65 73.70 64.90 b 51.04 b 38.87 64.44
1971 47.06 51.89 50.58 62.19 d 75.22 m 74.27 89.32 90.54 g 71.90 63.03 48.78 c 38.61 59.76
1972 40.48 42.41 56.10 58.60 73.65 79.63 85.57 c 88.25 c 72.07 65.50 a 47.24 e 34.89 c 62.03
1973 37.03 a 45.00 a 57.61 66.10 74.06 77.45 a 87.26 84.59 b 74.00 a 62.16 44.67 44.48 62.87
1974 36.84 50.43 55.13 63.43 69.23 83.90 84.97 88.87 82.83 67.94 51.93 45.03 a 65.04
1975 41.10 42.50 52.61 61.33 73.10 79.77 91.68 81.87 81.37 62.13 50.53 42.10 63.34
1976 43.00 46.72 52.81 61.40 73.39 76.23 82.68 i 81.30 h 81.90 67.39 53.67 41.65 59.81
1977 29.81 50.18 56.03 70.50 b 68.32 84.77 86.78 d 78.00 w 73.13 65.52 48.93 43.03 61.55
1978 38.55 45.58 b 59.35 62.43 71.06 82.23 88.06 84.58 74.81 c 68.65 46.12 e ----- z 65.59
1979 25.74 46.18 f 59.74 64.83 77.10 83.53 88.18 c 86.06 81.60 68.52 42.97 44.55 65.71
1980 31.58 38.48 54.97 69.00 k 72.58 74.75 b 83.87 81.63 d 75.27 63.81 j 46.86 p 37.50 q 64.14
1981 42.25 o ----- z 61.00 j 58.62 n ----- z 75.32 e 84.31 b ----- z ----- z ----- z ----- z ----- z 79.82
Period of Record Statistics
MEAN 36.93 46.17 56.05 65.10 73.86 80.13 88.14 86.41 78.32 65.83 49.45 41.46 63.27
S.D. 6.71 5.08 2.85 4.02 3.37 3.31 2.82 3.23 3.64 3.22 3.55 3.86 1.21
SKEW -0.38 -0.65 0.34 0.21 0.45 0.14 -0.06 0.28 -0.09 0.18 -0.42 -0.05 -0.06
MAX 49.35 54.43 63.26 75.48 82.94 87.43 94.18 93.68 86.37 72.13 55.53 51.58 65.04
MIN 24.71 33.31 50.58 56.73 68.30 74.27 82.33 79.42 70.80 60.13 40.80 33.77 61.23
NO YRS 45 45 43 46 47 51 50 47 47 35 37 37 10