PROSSER, WASHINGTON

Monthly Average Temperature (Degrees Fahrenheit)

(456763)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 196301
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
1912 ----- z ----- z ----- z 52.75 n 60.97 69.30 72.19 68.55 59.65 47.29 c 43.88 35.83 a 57.21
1913 28.40 30.07 42.71 53.47 59.35 67.42 73.16 b 72.65 61.52 50.31 43.79 a 32.11 51.25
1914 39.52 37.30 47.89 54.12 a 62.26 65.00 b 74.97 a 71.89 c 59.72 g 53.74 f 42.85 d 23.21 51.90
1915 26.85 39.29 47.97 55.40 59.85 67.22 71.27 i 75.50 60.67 53.68 38.87 33.60 50.81
1916 19.94 e 33.79 46.03 52.62 56.15 63.27 66.81 69.00 60.60 48.68 33.63 27.17 b 48.14
1917 29.71 35.68 38.82 48.35 57.42 62.23 71.00 a 70.68 63.05 52.87 a 42.68 b 43.83 a 51.36
1918 37.23 35.27 44.73 51.07 55.45 69.78 70.84 b 66.68 a 65.10 53.60 40.20 36.26 b 52.18
1919 34.23 i 36.54 45.18 51.93 57.98 62.74 c 69.77 69.98 60.16 b 49.66 39.45 22.43 c 51.44
1920 28.53 a 36.03 43.98 48.32 55.71 63.12 b 73.68 69.58 60.84 a 51.00 39.32 37.31 50.62
1921 35.42 39.27 46.55 50.50 59.76 67.37 69.55 69.92 57.67 53.95 39.93 31.84 51.81
1922 19.95 31.77 b 41.77 48.32 57.52 a 70.38 72.76 71.76 63.90 52.71 37.47 26.13 a 49.54
1923 39.00 30.45 44.34 52.67 59.55 ----- z 73.15 71.77 64.08 52.37 42.95 35.24 51.42
1924 28.58 43.81 44.90 52.23 64.53 67.73 72.05 69.81 63.74 e 52.75 a 39.48 a ----- z 54.51
1925 39.08 45.12 47.84 f 54.88 61.37 67.85 74.77 70.11 62.75 52.44 39.66 a 38.29 55.12
1926 35.29 43.80 49.24 57.33 59.80 a 69.33 74.03 70.28 a 57.10 a 53.97 b 43.59 c 32.38 c 53.85
1927 29.61 d 40.94 a 43.93 x 50.69 f 56.84 l 67.27 d 71.98 70.45 61.45 52.85 46.88 b 29.27 52.30
1928 30.33 a 37.24 b 47.70 a 51.13 g 63.60 66.57 75.31 69.85 62.87 53.81 b 41.08 33.05 c 52.86
1929 22.28 a 22.92 b 46.21 g 49.98 c 59.10 66.68 b 70.84 71.69 60.18 53.27 35.15 35.30 i 51.21
1930 19.00 k 41.34 46.61 54.08 57.63 62.38 70.44 e 71.76 63.80 49.05 39.45 31.90 a 53.50
1931 36.47 38.94 a 46.12 b 53.29 d 64.54 c 65.50 d 73.32 70.98 a 62.40 52.53 a 37.27 29.58 52.58
1932 30.48 a 35.71 a 46.10 54.07 59.16 68.83 c 69.13 70.19 64.00 53.92 45.09 a 29.27 e 52.16
1933 35.80 c 31.29 b 44.55 c 51.98 54.83 a 65.89 k 73.55 b 72.03 61.37 c 55.09 c 42.38 b 42.97 51.44
1934 40.97 42.52 51.20 a 60.35 63.37 d 69.97 75.19 75.48 d 61.02 54.25 a 45.70 37.43 b 56.45
1935 36.26 38.11 43.18 49.66 b 59.70 a 66.10 71.76 68.68 65.53 49.72 a 32.33 z 33.27 a 52.91
1936 35.80 c 19.79 c 45.02 57.35 64.02 a 68.52 72.05 70.77 62.13 54.93 a 34.22 36.77 51.78
1937 13.86 c 32.52 a 47.28 a 51.86 b 60.05 66.75 74.27 67.69 64.53 56.40 a 44.53 37.06 51.40
1938 36.16 37.09 45.07 a 53.71 d 59.89 68.90 74.53 a 69.13 67.68 52.97 b 38.28 36.24 53.30
1939 37.50 35.88 b 47.00 55.27 b 62.63 65.13 72.77 71.58 64.75 54.12 b 40.95 40.67 b 54.02
1940 30.34 39.91 a 49.15 53.65 62.47 71.55 76.05 72.63 69.40 52.33 s 35.58 34.30 a 54.09
1941 33.89 39.39 49.66 55.72 59.50 67.90 78.47 70.73 60.23 51.68 43.33 37.35 53.99
1942 25.18 38.02 44.31 d 53.90 a 58.58 63.18 b 72.85 73.21 64.17 52.50 37.85 32.85 51.38
1943 22.98 b 38.10 d 43.26 54.32 56.34 63.23 72.03 68.27 65.50 50.92 39.33 32.75 a 50.59
1944 28.92 36.36 42.85 a 50.33 i 58.97 a 65.55 71.81 68.58 a 64.18 54.48 37.32 29.40 50.77
1945 35.81 40.45 42.83 h 49.32 61.23 64.52 72.39 71.08 61.03 53.35 40.80 32.97 52.99
1946 36.19 w 40.07 45.69 52.77 61.61 c ----- z 71.17 b 70.35 62.00 a 48.92 38.11 b 36.78 b 52.75
1947 30.39 d 39.80 48.58 55.38 65.19 64.89 b 71.35 68.32 a 64.43 53.77 a 41.78 35.62 e 53.29
1948 ----- z ----- z ----- z ----- z ----- z 70.30 68.95 69.00 b 62.02 50.16 b ----- z 29.57 b 58.33
1949 16.16 33.50 44.71 54.92 63.53 65.88 70.03 69.82 64.48 48.16 45.20 36.73 c 51.09
1950 16.69 33.34 43.47 49.97 58.77 66.10 72.92 71.87 64.05 a 51.39 42.58 39.63 50.90
1951 34.77 37.77 40.67 a 53.67 a 60.92 67.37 72.63 70.50 64.55 51.10 40.50 g 29.98 53.08
1952 27.02 38.72 44.63 55.48 61.52 66.28 72.82 70.87 65.17 55.16 34.07 35.61 52.28
1953 46.23 e 43.20 46.69 51.40 57.84 62.45 72.13 71.03 64.85 53.76 44.57 39.70 c 54.49
1954 32.40 39.46 42.40 52.37 61.08 64.13 70.89 68.20 i 62.40 49.76 46.37 34.66 50.54
1955 32.05 37.23 41.06 47.72 57.68 68.22 71.69 d 72.02 d 63.87 53.83 a 34.05 31.47 50.91
1956 32.47 27.59 44.98 55.15 64.10 64.60 74.63 71.10 64.18 51.85 38.20 37.11 h 53.53
1957 18.84 37.07 44.76 53.73 65.03 68.17 69.89 67.94 65.27 50.69 40.62 40.55 a 51.88
1958 39.56 45.93 44.60 51.50 66.66 70.88 76.45 74.26 63.40 53.83 a 41.85 37.34 55.52
1959 34.56 38.32 46.39 54.23 57.50 66.87 g 74.22 d 68.13 61.88 53.32 38.17 34.23 51.00
1960 24.21 38.98 45.48 53.27 57.10 e 67.40 75.74 68.60 64.07 55.09 c 42.82 29.47 51.85
1961 37.43 a 46.26 a 46.74 52.70 59.85 a 71.13 74.94 75.42 61.38 50.90 36.82 36.34 54.16
1962 33.32 38.82 43.05 55.68 57.10 65.57 71.64 f 69.38 e 65.41 b 52.87 45.45 38.69 51.40
1963 31.82 q ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 31.01 37.16 45.27 53.04 60.18 66.69 72.61 70.63 63.01 52.36 40.49 34.15 52.24
S.D. 7.24 5.21 2.48 2.61 2.86 2.54 2.21 1.97 2.30 2.06 3.51 4.61 1.79
SKEW -0.53 -1.05 -0.07 0.03 0.27 -0.02 0.05 0.64 -0.10 -0.54 -0.17 -0.36 0.28
MAX 46.23 46.26 51.20 60.35 66.66 71.55 78.47 75.50 69.40 56.40 46.88 43.83 56.45
MIN 13.86 19.79 38.82 47.72 54.83 62.23 66.81 66.68 57.10 47.29 33.63 22.43 48.14
NO YRS 46 49 45 46 49 47 49 50 50 49 48 48 28