PROSSER, WASHINGTON

Monthly Average Maximum 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 64.44 n 77.03 85.60 88.77 84.16 76.67 60.60 a 52.23 43.57 a 71.08
1913 35.45 38.39 54.26 68.03 74.87 82.90 91.59 b 90.55 79.70 63.35 52.28 a 36.81 64.01
1914 47.13 44.04 61.71 68.53 80.13 82.57 96.00 94.29 76.48 e 66.07 a 52.42 d 31.10 66.71
1915 34.06 48.68 62.00 71.77 74.84 86.10 90.57 h 95.77 78.97 69.42 47.90 41.65 64.65
1916 26.50 a 40.93 57.65 68.60 71.19 79.60 83.84 89.35 79.30 67.55 43.43 33.52 61.79
1917 39.81 44.36 51.16 60.60 71.58 79.30 92.07 a 91.29 81.00 71.55 54.89 b 53.48 65.92
1918 45.26 46.04 58.90 69.00 72.00 88.17 88.48 83.87 a 84.37 68.77 52.00 43.17 b 66.67
1919 43.75 c 45.79 58.81 67.57 73.65 79.36 b 88.16 89.74 77.71 b 66.94 50.17 29.29 64.24
1920 36.29 46.34 57.16 61.97 72.29 79.86 a 93.10 87.77 76.10 a 63.42 49.90 46.10 64.19
1921 43.84 47.71 59.13 64.40 76.19 83.87 89.29 89.23 74.67 70.74 52.47 39.32 65.90
1922 29.26 41.61 54.29 62.63 73.81 89.57 92.61 89.03 84.27 66.77 44.37 34.50 a 63.56
1923 46.77 39.96 59.68 68.33 74.55 ----- z 90.45 89.29 82.40 66.74 55.50 44.16 65.26
1924 38.19 55.45 59.35 69.30 83.61 85.13 90.19 88.03 82.54 d 68.50 a 49.10 a ----- z 69.95
1925 50.29 55.75 63.23 e 71.17 76.23 85.40 94.32 88.42 79.30 68.39 50.41 a 44.71 68.97
1926 40.68 55.25 65.77 74.23 75.67 a 87.57 93.39 88.53 a 74.97 68.97 a 54.21 b 41.59 b 68.40
1927 38.68 c 50.07 a 55.09 t 65.22 c 72.16 f 83.46 d 91.29 88.06 76.20 67.13 57.46 b 39.39 65.70
1928 35.93 a 47.93 b 60.17 a 65.04 f 82.58 82.43 93.97 90.13 83.30 68.52 b 51.33 40.47 a 66.98
1929 27.71 35.77 b 61.76 b 65.11 c 75.97 81.68 b 90.26 93.06 78.70 71.23 49.40 43.18 c 64.49
1930 29.57 h 50.89 59.48 70.47 71.87 78.40 90.44 d 91.26 80.80 64.65 48.77 36.10 a 67.56
1931 43.32 49.93 a 57.90 b 68.18 b 81.69 b 80.76 a 92.16 91.67 a 78.67 68.29 47.43 36.97 66.41
1932 38.23 45.72 56.39 68.43 74.29 86.89 b 86.42 88.65 83.53 68.45 55.73 40.28 b 66.08
1933 45.41 b 40.00 a 57.43 a 69.03 70.16 84.19 d 92.03 90.65 74.73 71.63 a 51.86 b 50.00 66.43
1934 50.71 55.39 66.90 76.70 79.17 b 84.37 90.68 90.55 b 78.70 65.87 a 54.33 44.28 b 69.80
1935 43.65 48.46 56.71 64.97 76.65 82.57 89.19 88.03 84.90 64.71 34.33 z 38.06 67.08
1936 41.72 b 28.65 c 58.71 73.33 79.87 83.27 90.10 89.87 80.70 73.33 a 46.63 45.29 65.96
1937 23.29 43.18 60.17 a 65.18 b 76.42 81.53 91.81 85.32 81.63 71.80 a 52.80 43.45 64.72
1938 43.16 44.11 56.94 68.92 d 77.13 85.40 92.97 a 88.58 85.70 66.42 50.83 45.94 67.17
1939 46.10 46.57 60.52 72.13 78.81 81.03 91.26 91.00 82.73 70.20 a 55.50 48.30 a 68.68
1940 36.00 48.14 63.48 69.00 79.39 87.57 90.13 89.39 81.90 69.19 43.87 41.93 a 66.67
1941 39.61 50.21 66.84 71.53 74.19 81.47 93.97 85.90 75.17 64.48 55.27 45.87 67.04
1942 31.52 48.14 60.24 b 70.67 72.84 78.57 91.10 92.10 83.70 69.10 46.10 41.00 65.42
1943 31.77 46.60 c 56.71 68.80 71.00 78.67 90.58 85.94 85.87 63.74 46.37 39.84 63.82
1944 36.23 46.93 57.23 a 64.43 g 75.43 a 82.00 90.71 88.03 a 84.00 71.97 47.10 36.52 65.10
1945 45.16 52.39 53.67 g 65.27 76.84 80.57 91.68 89.71 78.57 69.45 49.67 39.74 67.19
1946 48.12 w 51.86 58.10 67.87 79.23 a ----- z 88.26 88.23 78.55 a 62.61 48.61 b 45.43 a 66.87
1947 41.48 d 53.57 63.52 71.03 81.87 79.11 b 88.13 85.87 a 80.53 63.53 a 49.70 42.42 e 66.73
1948 ----- z ----- z ----- z ----- z ----- z 86.03 86.97 85.48 b 78.67 64.62 b ----- z 37.21 b 73.16
1949 26.03 43.21 56.35 72.27 80.58 83.83 88.48 87.68 80.73 62.71 53.70 45.50 c 65.09
1950 25.23 42.64 54.32 63.90 76.00 79.83 91.16 90.19 82.80 61.00 50.33 45.32 63.56
1951 42.06 47.46 52.43 a 72.00 77.10 83.43 91.06 88.16 80.73 61.90 50.12 e 37.00 65.29
1952 32.87 47.48 56.84 72.50 76.42 80.70 91.16 88.26 82.90 71.45 42.67 40.13 65.28
1953 53.50 e 54.00 59.42 64.37 71.68 76.00 89.68 86.90 82.33 67.45 53.67 47.79 b 67.23
1954 39.74 45.89 55.16 65.20 75.87 77.80 87.19 83.97 a 77.23 62.65 55.17 42.45 64.03
1955 37.00 47.32 53.06 60.83 71.32 83.53 85.10 88.65 78.90 65.55 41.30 38.10 62.56
1956 39.10 35.48 55.87 71.37 78.55 79.53 91.74 87.94 80.43 63.39 45.33 44.57 h 66.25
1957 26.74 46.04 55.10 67.93 79.23 83.23 86.58 84.55 81.47 60.68 51.53 48.20 a 64.27
1958 47.32 55.14 57.32 64.53 83.19 85.27 93.55 92.71 78.67 70.40 a 52.57 43.68 68.70
1959 42.03 47.04 59.23 69.23 71.61 81.17 g 91.74 d 84.23 74.20 67.10 50.20 41.19 63.44
1960 31.16 49.07 58.35 66.53 70.81 e 83.53 93.29 83.90 80.77 68.89 c 53.20 34.45 64.50
1961 43.55 54.52 a 56.65 65.47 73.17 a 87.20 91.71 91.81 76.77 64.29 47.77 43.81 66.39
1962 42.19 47.86 55.32 71.37 68.97 80.87 88.62 e 84.19 e 82.24 a 64.68 54.17 44.13 65.38
1963 39.21 q ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 38.84 46.90 58.46 68.20 75.87 82.70 90.55 88.63 80.11 66.88 50.44 41.56 65.73
S.D. 7.26 5.64 3.49 3.57 3.70 3.08 2.45 2.78 3.07 3.31 3.79 4.84 1.82
SKEW -0.34 -0.73 0.48 -0.11 0.24 0.11 -0.47 0.10 -0.12 -0.09 -0.45 -0.24 0.17
MAX 53.50 55.75 66.90 76.70 83.61 89.57 96.00 95.77 85.87 73.33 57.46 53.48 69.80
MIN 23.29 28.65 51.16 60.60 68.97 76.00 83.84 83.87 74.20 60.60 41.30 29.29 61.79
NO YRS 47 49 47 47 49 48 50 51 51 51 49 49 37