PROSSER, WASHINGTON

Monthly Average Minimum 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 41.06 n 44.90 53.00 55.61 52.94 42.63 34.93 b 35.53 28.19 43.47
1913 21.35 21.75 31.16 38.90 43.84 51.93 54.65 54.74 43.33 37.26 35.63 27.42 38.50
1914 31.90 30.57 34.06 39.52 a 44.39 47.21 b 53.87 a 49.82 c 42.79 b 41.19 e 32.90 a 15.32 38.63
1915 19.65 29.89 33.94 39.03 44.87 48.33 52.93 a 55.23 42.37 37.94 29.83 25.55 38.30
1916 11.81 e 26.66 34.42 36.63 41.10 46.93 49.77 48.65 41.90 29.81 23.83 20.62 b 34.34
1917 19.61 27.00 26.48 36.10 43.26 45.17 49.81 50.06 45.10 34.07 a 30.07 34.30 a 36.75
1918 29.19 24.50 30.55 33.13 38.90 51.40 53.52 b 49.42 45.83 38.42 28.40 29.26 37.71
1919 24.13 h 27.29 31.55 36.30 42.32 45.83 a 51.39 50.23 42.73 32.39 28.73 13.93 c 36.61
1920 21.47 a 25.72 30.81 34.67 39.13 46.52 a 54.26 51.39 45.73 38.58 28.73 28.52 37.13
1921 27.00 30.82 33.97 36.60 43.32 50.87 49.81 50.61 40.67 37.16 27.40 24.35 37.72
1922 10.65 22.35 b 29.26 34.00 41.13 a 51.20 52.90 54.48 43.53 38.65 30.57 18.52 35.60
1923 31.23 20.93 29.00 37.00 44.55 ----- z 55.84 54.26 45.77 38.00 30.40 26.32 37.57
1924 18.97 32.17 30.45 35.17 45.45 50.33 53.90 51.58 44.76 a 36.84 29.47 ----- z 39.01
1925 27.87 34.50 32.67 a 38.60 46.52 50.30 55.23 51.81 46.20 36.48 29.17 31.87 40.10
1926 29.90 32.36 32.71 40.43 43.65 51.10 54.68 51.84 39.55 a 39.13 a 33.14 a 22.69 b 39.26
1927 21.33 a 31.93 33.80 p 35.44 c 41.96 g 51.17 52.68 52.84 46.70 38.58 36.20 19.16 38.60
1928 24.81 26.66 35.03 36.89 b 44.61 50.70 56.65 49.58 42.43 39.26 30.83 26.03 b 38.62
1929 16.77 a 9.93 31.65 e 35.17 42.23 52.03 51.42 50.32 41.67 35.32 20.90 27.65 h 35.22
1930 8.96 g 31.79 33.74 37.70 43.39 46.37 50.59 d 52.26 46.80 33.45 30.13 27.81 39.46
1931 29.61 28.00 34.10 a 38.14 b 46.73 a 50.63 c 54.48 50.19 46.13 36.83 a 27.10 22.19 38.68
1932 22.27 a 25.61 a 35.81 39.70 44.03 50.38 a 51.84 51.74 44.47 39.39 34.34 a 19.32 c 38.24
1933 25.70 a 22.11 a 31.76 b 34.93 39.80 a 47.60 j 54.66 b 53.42 46.56 c 38.79 c 32.83 35.94 37.86
1934 31.23 29.64 35.53 a 44.00 47.62 b 55.57 59.71 60.79 b 43.33 42.74 37.07 30.65 43.16
1935 28.87 27.75 29.65 34.96 b 43.07 a 49.63 54.32 49.32 46.17 34.67 a 27.03 28.17 a 37.80
1936 30.43 a 11.81 b 31.32 41.37 48.13 a 53.77 54.00 51.68 43.57 36.68 21.80 28.26 37.73
1937 5.50 c 21.59 a 34.48 38.17 43.68 51.97 56.74 50.06 47.43 41.10 36.27 30.68 38.14
1938 29.16 30.07 32.83 a 38.80 42.65 52.40 56.19 49.68 49.67 39.83 b 25.73 26.55 39.46
1939 28.90 25.46 b 33.48 37.79 b 46.45 49.23 54.29 52.16 46.77 37.86 b 26.40 32.17 a 39.25
1940 24.68 31.64 a 34.81 38.30 45.55 55.53 61.97 55.87 56.90 41.67 s 27.30 26.94 41.77
1941 28.16 28.57 32.48 39.90 44.81 54.33 62.97 55.55 45.30 38.87 31.40 28.84 40.93
1942 18.84 27.89 28.34 b 36.97 a 44.32 47.36 b 54.61 54.32 44.63 35.90 29.60 24.71 37.29
1943 14.59 b 29.08 c 29.81 39.83 41.68 47.80 53.48 50.61 45.13 38.10 32.30 25.30 a 37.31
1944 21.61 25.79 28.55 36.79 f 42.48 49.10 52.90 49.06 44.37 37.00 27.53 22.29 36.43
1945 26.45 28.50 32.89 c 33.37 45.61 48.47 53.10 52.45 43.50 37.26 31.93 26.19 38.31
1946 24.25 w 28.29 33.29 37.67 44.07 c ----- z 53.86 b 52.48 45.53 35.23 27.57 27.93 a 38.59
1947 19.17 b 26.04 33.65 39.73 48.52 50.57 54.58 50.55 48.33 43.97 33.87 28.81 e 39.81
1948 ----- z ----- z ----- z ----- z ----- z 54.57 50.94 52.52 b 45.37 35.69 b ----- z 22.17 a 43.54
1949 6.29 23.79 33.06 37.57 46.48 47.93 51.58 51.97 48.23 33.61 36.70 27.96 c 37.10
1950 8.16 24.04 32.61 36.03 41.55 52.37 54.68 53.55 45.72 a 41.77 34.83 33.94 38.27
1951 27.48 28.07 28.81 35.17 a 44.74 51.30 54.19 52.84 48.37 40.29 31.67 f 22.97 39.48
1952 21.16 29.97 32.42 38.47 46.61 51.87 54.48 53.48 47.43 38.87 25.47 31.10 39.28
1953 38.96 e 32.39 33.97 38.43 44.00 48.90 54.58 55.16 47.37 40.06 35.47 30.90 a 41.68
1954 25.06 33.04 29.65 39.53 46.29 50.47 54.58 53.17 h 47.57 36.87 37.57 26.87 38.86
1955 27.10 27.14 29.06 34.60 44.03 52.90 58.37 d 54.96 d 48.83 42.27 a 26.80 24.84 39.24
1956 25.84 19.69 34.10 38.93 49.65 49.67 57.52 54.26 47.93 40.32 31.07 29.65 h 40.82
1957 10.94 28.11 34.42 39.53 50.84 53.10 53.19 51.32 49.07 40.71 29.70 32.90 a 39.49
1958 31.81 36.71 31.87 38.47 50.13 56.50 59.35 55.81 48.13 37.27 a 31.13 31.00 42.35
1959 27.10 29.61 33.55 39.23 43.39 53.25 f 56.70 d 52.03 49.57 39.55 26.13 27.26 38.56
1960 17.26 28.90 32.61 40.00 43.38 e 51.27 58.19 53.29 47.37 41.29 c 32.43 24.48 39.21
1961 30.77 a 38.00 a 36.84 39.93 46.42 55.07 58.16 59.03 46.00 37.52 25.87 28.87 41.87
1962 24.45 29.79 30.77 40.00 45.23 50.27 54.35 e 54.58 e 48.17 a 41.06 36.73 33.26 40.72
1963 24.43 q ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 23.28 27.43 32.25 37.73 44.48 50.71 54.59 52.54 45.75 37.98 30.45 26.74 38.80
S.D. 7.47 5.20 2.26 2.25 2.58 2.69 2.82 2.49 2.86 2.78 4.07 4.78 1.82
SKEW -0.66 -1.11 -0.40 0.01 0.22 0.04 0.77 0.94 0.83 -0.42 -0.11 -0.56 0.25
MAX 38.96 38.00 36.84 44.00 50.84 56.50 62.97 60.79 56.90 43.97 37.57 35.94 43.16
MIN 5.50 9.93 26.48 33.13 38.90 45.17 49.77 48.65 39.55 29.81 20.90 13.93 34.34
NO YRS 46 49 48 48 49 47 51 50 51 50 49 48 35