PROSSER 4 NE, WASHINGTON

Monthly Average Temperature (Degrees Fahrenheit)

(456768)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1925 ----- z ----- z ----- z ----- z ----- z ----- z 73.16 ----- z ----- z ----- z ----- z ----- z 73.16
1926 ----- z 42.25 h 49.14 f 56.64 b 58.02 a 69.52 e 74.42 f 69.68 57.29 d 52.75 g 41.86 b 30.31 b 54.76
1927 27.98 h 39.33 a 44.00 a 49.97 54.76 65.88 70.34 71.05 59.36 e 51.58 e 44.12 i 28.29 g 56.25
1928 ----- z ----- z ----- z 47.75 d 60.78 f 62.71 f ----- z ----- z 64.50 z 54.06 e 40.61 h 32.65 e 44.82
1929 21.66 c 22.55 44.89 c 49.22 a 57.62 a 63.24 c 70.38 e 71.91 d 60.56 e 54.18 c 34.83 f 34.59 b 50.07
1930 13.27 41.18 f 47.93 b 54.02 b 57.29 c 63.13 g 71.61 d 72.46 h 63.00 b 48.55 a 38.68 k 31.46 c 48.39
1931 35.74 38.30 45.52 53.22 63.50 65.88 73.65 71.95 63.10 a 52.27 37.50 26.39 52.25
1932 28.65 a 34.43 45.13 53.17 57.89 66.98 68.68 69.58 63.03 53.52 b 43.85 30.76 51.31
1933 34.47 29.18 43.26 50.93 55.00 65.67 71.56 71.42 58.72 55.89 42.02 41.55 51.64
1934 39.63 42.02 50.21 58.90 62.24 66.93 71.37 71.69 60.53 55.03 45.03 36.53 55.01
1935 33.53 37.73 41.61 47.55 56.69 63.60 70.31 66.95 64.90 49.60 34.63 31.50 49.88
1936 35.19 22.66 43.40 55.58 62.48 66.77 70.81 69.87 60.96 e 54.53 a 33.23 35.69 50.93
1937 14.61 30.44 a 46.11 49.33 57.18 65.55 72.90 67.10 62.53 54.48 43.40 a 35.68 49.94
1938 34.32 35.18 43.55 b 52.50 57.87 67.15 74.73 67.15 67.00 52.16 36.62 34.79 51.92
1939 35.81 35.23 46.06 53.70 61.02 63.45 72.13 a 71.95 63.00 51.60 39.62 38.37 52.66
1940 29.19 38.38 48.08 52.10 60.87 67.27 70.60 68.44 63.85 53.55 33.85 32.76 51.58
1941 32.11 37.80 48.34 53.18 57.32 63.87 74.39 69.94 58.30 50.77 42.83 35.61 52.04
1942 23.97 36.30 43.16 52.03 57.02 61.83 71.76 72.56 64.10 53.08 37.53 33.58 50.58
1943 22.95 37.18 41.71 53.20 54.24 61.08 70.48 66.84 64.62 51.65 39.40 31.87 49.60
1944 29.79 36.36 41.95 50.42 58.11 64.18 70.61 68.29 64.42 55.61 38.73 30.45 50.74
1945 35.92 40.04 42.58 48.67 58.95 62.67 71.55 70.61 60.00 53.81 39.55 32.16 51.37
1946 35.18 39.30 a 44.47 51.23 61.50 63.27 70.10 70.16 60.13 48.44 36.83 35.71 51.36
1947 28.44 39.41 47.63 54.07 64.19 63.70 69.74 66.97 63.50 52.31 40.32 34.40 52.06
1948 31.65 33.10 41.08 47.58 56.37 68.27 67.37 67.28 a 60.75 49.66 39.80 28.77 49.31
1949 15.76 32.71 43.21 52.87 61.56 63.68 67.75 a 68.19 64.07 47.85 44.67 36.02 49.86
1950 14.89 31.05 41.87 a 48.45 55.61 64.12 70.22 f 70.35 63.67 50.63 41.43 37.90 47.27
1951 33.66 36.57 39.27 51.78 e 58.61 65.20 71.06 68.90 63.35 50.65 38.53 a 29.11 50.56
1952 25.39 37.78 43.00 a 52.80 59.23 63.78 71.02 69.32 64.65 56.50 33.85 34.98 h 52.48
1953 43.12 a 41.07 44.55 48.93 54.81 59.40 69.32 68.59 h 63.57 53.48 43.40 38.10 b 50.89
1954 29.60 37.54 39.73 49.32 58.66 i 60.85 67.45 65.84 60.98 49.10 45.22 33.02 48.97
1955 30.76 35.29 38.18 45.47 54.45 65.32 65.15 e 68.13 62.82 51.58 32.82 29.84 48.32
1956 31.48 24.62 43.11 53.53 61.85 62.25 72.27 69.13 63.47 50.97 37.00 34.45 50.35
1957 17.24 36.44 c 42.79 51.23 62.08 66.25 67.39 65.83 a 64.57 49.61 39.85 38.23 50.13
1958 37.18 44.26 a 42.34 49.12 64.63 69.17 74.02 72.34 61.47 52.34 40.93 35.29 53.59
1959 32.35 36.07 43.73 51.75 54.87 64.33 70.63 65.76 59.90 51.58 36.90 32.68 50.05
1960 22.18 37.66 42.66 50.75 55.90 65.12 73.16 66.00 62.30 53.11 42.35 28.90 50.01
1961 35.11 43.96 45.03 50.58 57.19 69.10 72.21 73.31 59.08 50.13 35.92 35.02 52.22
1962 31.92 38.02 40.60 54.03 54.52 64.04 b 69.39 67.45 63.53 51.84 43.78 37.61 51.39
1963 27.45 38.66 45.45 49.08 58.32 65.23 67.15 69.94 67.12 54.55 43.47 31.23 51.47
1964 ----- z 39.34 42.44 49.18 56.13 64.17 70.73 66.11 60.47 51.31 39.48 29.39 51.70
1965 32.92 41.55 42.37 52.83 57.24 64.92 71.55 70.37 59.98 55.47 44.43 34.37 52.33
1966 35.21 39.12 44.44 52.93 60.19 62.98 68.76 70.73 65.57 52.21 43.93 38.98 52.92
1967 40.82 43.41 44.05 46.02 c 58.31 68.37 72.62 a 74.39 67.93 53.40 41.47 34.60 53.78
1968 35.23 41.78 47.98 49.83 58.16 64.67 72.52 67.06 61.88 47.97 40.45 29.34 51.41
1969 20.02 30.82 44.21 49.93 61.44 69.53 68.47 66.19 62.08 47.40 40.33 32.50 49.41
1970 29.10 39.50 43.97 47.30 57.37 68.03 70.87 68.16 57.10 49.00 39.48 31.47 50.11
1971 36.98 39.27 39.58 49.05 59.35 59.98 70.26 72.32 55.82 48.08 40.20 32.41 b 50.28
1972 31.11 34.97 45.90 47.62 60.32 65.50 70.00 70.71 57.72 50.52 39.73 27.27 50.11
1973 30.13 37.46 45.18 51.30 59.00 64.40 70.77 67.95 61.25 50.18 38.57 37.50 b 51.14
1974 28.26 39.77 44.16 50.23 54.87 66.97 68.10 68.77 63.07 50.23 41.17 36.11 50.98
1975 32.34 33.28 a 40.61 45.65 56.35 62.95 73.13 65.21 61.48 50.03 39.07 34.34 49.54
1976 34.55 36.50 40.94 48.98 58.19 61.43 68.58 66.29 64.00 50.61 40.05 30.77 50.08
1977 23.84 38.80 43.50 55.12 54.85 68.72 68.42 74.19 58.67 49.84 38.48 34.94 50.78
1978 31.56 38.50 46.71 50.35 55.62 a 66.60 70.48 68.31 60.00 50.79 33.40 30.00 50.19
1979 14.84 35.96 46.06 50.48 60.44 65.93 70.95 69.65 64.35 54.21 34.03 35.71 50.22
1980 22.97 32.83 42.97 53.47 58.00 61.10 68.58 65.65 62.03 50.29 40.42 36.73 49.59
1981 36.27 38.00 47.15 50.62 57.23 61.80 67.98 72.13 61.77 49.74 41.40 31.82 51.33
1982 28.16 37.52 43.53 47.27 57.56 67.10 68.73 69.40 60.75 49.11 36.63 32.89 49.89
1983 37.92 40.34 47.76 50.37 59.74 62.28 67.18 70.89 58.72 50.19 44.55 23.73 a 51.14
1984 32.84 38.67 47.06 ----- z 55.16 63.00 70.71 69.63 59.33 48.06 39.92 27.95 50.21
1985 26.50 31.59 43.13 53.62 60.61 66.07 75.61 67.77 58.13 50.89 27.63 22.52 48.67
1986 34.39 39.36 48.63 50.12 ----- z ----- z ----- z 74.74 59.47 a 54.00 41.37 30.66 48.08
1987 31.43 a ----- z 46.97 55.75 62.63 68.62 69.31 70.39 65.18 53.35 42.37 31.58 54.33
1988 31.47 41.14 45.08 53.43 58.42 64.68 71.24 69.48 62.10 57.73 44.07 32.18 52.58
1989 36.43 a 26.43 42.93 a ----- z 58.37 67.85 68.97 68.53 ----- z 52.00 44.28 32.00 49.78
1990 39.58 37.41 a 46.02 55.23 56.95 65.45 73.39 71.63 67.52 ----- z 44.70 25.98 53.08
1991 28.97 ----- z 44.02 51.05 57.23 61.17 ----- z 73.18 ----- z 51.73 40.83 36.78 a 49.44
1992 ----- z ----- z ----- z 54.12 61.60 69.67 70.52 70.94 59.55 53.68 40.23 30.10 56.71
1993 24.03 a 30.91 ----- z 50.37 63.42 63.43 64.63 67.77 62.30 52.95 34.02 34.66 49.86
1994 38.10 34.59 a 46.90 ----- z 60.47 62.85 73.45 69.85 ----- z ----- z ----- z ----- z 55.17
1995 ----- z ----- z ----- z ----- z 60.45 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 60.45
1996 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 59.95 50.61 37.52 30.16 44.56
1997 32.50 39.54 45.94 50.85 63.50 66.55 73.29 75.61 64.93 52.19 42.23 34.18 53.44
1998 35.02 41.00 ----- z 51.77 60.32 68.62 79.32 74.32 ----- z 50.45 43.25 34.48 53.86
1999 39.35 40.91 a 45.55 51.07 57.18 67.12 72.61 74.37 64.02 51.74 45.48 38.76 54.01
2000 32.95 37.84 45.26 54.65 60.32 68.08 73.60 72.34 62.03 50.82 33.47 29.37 51.73
2001 32.00 34.91 45.24 49.88 61.48 64.27 73.08 74.61 65.45 51.37 41.65 33.47 52.28
2002 36.61 37.43 40.13 52.72 59.32 69.97 77.65 73.13 65.62 51.69 41.05 36.98 53.52
2003 39.53 40.62 49.82 52.92 59.81 71.38 77.94 75.47 67.73 58.32 37.80 34.44 55.48
2004 29.45 37.84 50.97 55.20 61.26 69.67 77.39 76.45 64.55 55.40 41.50 36.95 54.72
2005 31.82 39.02 49.76 53.62 63.66 66.12 76.26 75.68 64.25 54.76 39.50 28.31 53.56
2006 40.47 37.41 44.66 53.17 61.60 68.82 78.98 73.87 65.93 53.32 42.55 29.47 54.19
2007 30.24 38.54 47.85 51.83 61.45 67.68 79.00 72.24 65.37 51.84 40.55 34.73 53.44
2008 29.69 41.03 44.44 48.10 62.63 66.02 76.27 ----- z 64.55 52.11 42.77 ----- z 52.76
2009 ----- z ----- z ----- z ----- z 60.13 69.52 ----- z 73.87 66.23 48.87 a 41.53 25.32 55.07
2010 ----- z 41.64 45.77 51.63 ----- z 63.98 74.47 71.11 61.10 53.10 36.58 33.88 c 53.33
2011 35.83 b 34.91 f 41.06 m 44.60 e 56.33 a 63.02 67.26 f 74.36 b 68.12 a 53.16 c 38.98 b 29.08 g 54.30
2012 34.71 n ----- z 45.00 h ----- z ----- z ----- z 75.77 c 73.80 a 66.24 a 53.05 42.88 a 35.90 57.94
2013 28.90 38.77 b ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.84
Period of Record Statistics
MEAN 30.83 36.91 44.49 51.24 58.87 65.38 71.50 70.27 62.50 51.90 39.91 32.95 51.42
S.D. 6.61 4.38 2.68 2.72 2.69 2.67 3.11 2.87 2.79 2.31 3.52 3.67 1.62
SKEW -0.87 -1.34 0.11 -0.02 0.17 0.02 0.54 0.21 -0.09 0.34 -0.81 -0.40 0.55
MAX 43.12 44.26 50.97 58.90 64.63 71.38 79.32 76.45 68.12 58.32 45.48 41.55 55.48
MIN 13.27 22.55 38.18 44.60 54.24 59.40 64.63 65.21 55.82 47.40 27.63 22.52 48.32
NO YRS 78 77 77 80 81 81 79 81 81 83 81 81 60