PROSSER 4 NE, WASHINGTON

Monthly Average Maximum 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 90.74 ----- z ----- z ----- z ----- z ----- z 90.74
1926 ----- z 52.60 c 63.93 a 74.28 a 73.23 86.19 d 90.00 e 87.58 72.83 a 66.38 e 51.83 a 39.23 68.92
1927 34.30 h 48.33 a 56.81 66.43 70.35 82.63 90.39 88.94 73.00 e 65.00 e 54.41 h 38.92 g 71.32
1928 ----- z ----- z ----- z 62.27 d 78.52 f 80.00 d ----- z ----- z 79.00 z 66.85 e 49.95 h 40.27 e 62.35
1929 28.21 c 32.54 58.75 c 63.66 a 74.40 a 78.86 b 89.22 d 91.48 d 75.56 e 69.39 c 48.40 e 41.20 a 62.64
1930 22.16 49.64 c 62.17 b 72.20 73.71 c 79.13 g 92.18 c 91.80 f 78.86 b 62.50 a 46.62 d 36.55 59.66
1931 42.19 48.71 58.00 67.87 80.68 81.13 92.77 91.61 78.21 a 65.68 46.57 33.06 65.54
1932 35.83 a 43.31 55.13 67.10 72.77 85.20 85.10 87.26 81.30 65.70 a 53.17 40.48 64.36
1933 43.58 38.18 54.48 65.77 69.10 82.37 90.19 89.32 72.73 69.87 50.13 48.55 64.52
1934 47.87 53.46 64.84 73.87 78.45 84.13 90.16 89.61 75.67 66.32 52.83 42.81 68.34
1935 39.74 46.50 53.74 60.93 72.48 78.33 87.48 84.06 81.80 62.52 42.27 35.52 62.12
1936 40.48 30.48 56.06 71.00 78.16 81.10 89.16 88.58 78.56 c 71.13 a 43.77 43.52 64.33
1937 22.90 40.04 a 57.55 62.03 73.13 79.37 90.65 84.45 78.17 67.42 50.90 41.68 62.36
1938 40.58 42.54 55.23 a 66.87 75.10 84.00 93.61 86.03 83.50 64.42 48.07 44.16 65.34
1939 43.35 45.21 58.10 70.20 77.52 79.40 90.47 a 90.35 78.77 64.97 51.57 45.74 66.30
1940 34.55 45.90 60.84 65.70 78.16 85.90 87.10 85.19 77.70 64.77 41.03 39.77 63.88
1941 37.71 48.00 63.55 67.90 71.29 78.90 92.26 84.71 71.47 62.19 52.53 42.87 64.45
1942 29.61 45.39 57.71 66.87 70.23 76.97 89.48 90.65 81.93 68.19 44.43 39.94 63.45
1943 31.03 45.54 54.55 66.77 68.65 76.13 89.10 84.23 83.07 63.68 45.73 37.97 62.20
1944 37.87 45.38 55.71 64.20 73.77 79.53 88.26 85.77 81.43 70.48 45.80 34.84 63.59
1945 41.71 49.54 52.97 63.10 73.35 79.37 90.84 88.97 75.67 68.26 47.90 37.90 64.13
1946 44.06 50.59 a 55.61 65.37 76.84 77.47 87.23 87.29 75.20 61.13 46.63 43.58 64.25
1947 38.74 50.82 61.74 69.23 81.00 77.97 86.87 84.65 78.40 61.19 48.37 40.00 64.92
1948 38.97 41.90 53.52 60.73 67.90 82.97 84.71 83.17 a 76.10 63.39 49.27 36.61 61.60
1949 25.03 41.07 54.45 70.40 77.81 80.90 86.00 a 85.68 79.20 61.87 53.17 44.19 63.31
1950 23.03 39.21 52.00 a 61.70 71.65 76.50 88.20 f 88.23 81.10 60.19 48.57 42.77 58.63
1951 41.03 45.75 50.97 68.32 e 73.48 80.17 89.35 86.90 79.13 61.87 46.93 a 36.48 63.37
1952 31.00 46.14 54.63 a 68.87 74.13 77.60 88.94 86.81 81.90 72.00 42.60 40.30 h 65.87
1953 50.43 a 51.46 57.03 61.50 69.10 73.20 87.94 83.91 h 80.37 66.39 52.33 46.90 a 63.33
1954 37.84 43.93 52.00 62.87 73.59 i 74.93 84.52 81.61 75.70 61.48 53.07 40.68 60.78
1955 35.97 44.93 49.84 57.40 67.84 81.23 79.58 e 86.90 78.83 63.97 40.27 36.42 60.26
1956 37.81 32.10 53.71 69.17 75.29 77.23 89.77 86.10 80.30 62.13 43.57 41.32 62.37
1957 24.32 45.36 c 52.32 64.33 75.10 81.73 84.61 82.23 a 80.10 59.35 49.77 45.87 62.09
1958 44.16 52.44 a 53.61 60.93 80.10 83.97 90.81 90.68 76.20 67.06 49.93 40.87 65.90
1959 39.29 43.93 56.71 66.10 68.52 79.10 88.32 82.39 72.53 64.45 47.77 39.52 62.39
1960 29.42 47.76 54.84 63.53 69.45 81.83 92.35 81.90 78.47 66.39 53.10 34.16 62.77
1961 41.35 52.82 55.29 63.43 70.23 85.93 89.26 90.00 74.37 63.55 46.67 43.13 64.67
1962 40.35 46.89 51.58 68.23 66.06 80.21 b 86.52 82.16 78.90 62.81 51.93 43.23 63.24
1963 35.32 46.57 57.68 59.60 72.48 79.90 82.13 86.19 82.23 67.00 52.37 35.45 63.08
1964 ----- z 51.86 54.48 62.67 70.52 77.87 86.94 80.97 75.27 64.35 46.57 36.06 64.32
1965 38.39 51.36 55.48 66.53 72.06 79.67 87.90 84.71 74.60 68.68 51.83 41.74 64.41
1966 41.26 48.86 56.00 67.50 75.65 76.90 84.32 86.71 80.43 64.58 52.73 45.87 65.07
1967 48.97 55.04 55.71 57.63 c 72.74 83.60 90.53 a 92.81 84.93 66.00 51.20 43.29 66.87
1968 43.45 51.62 59.84 63.47 72.58 80.30 90.03 81.52 76.87 60.84 48.60 37.84 63.91
1969 26.68 38.71 55.90 62.23 76.03 84.70 86.71 84.32 77.07 61.10 50.77 37.68 61.83
1970 36.03 48.29 55.65 59.73 72.97 84.70 89.26 87.29 71.93 62.90 49.17 39.26 63.10
1971 46.29 50.79 50.45 63.00 74.77 74.13 88.58 91.97 71.87 62.42 50.27 40.38 b 63.74
1972 40.00 42.93 58.10 61.07 73.84 79.73 85.35 87.39 72.90 65.13 47.63 36.06 62.51
1973 38.61 45.75 58.29 66.13 74.13 79.33 88.29 85.81 75.97 62.81 45.30 44.69 b 63.76
1974 36.48 50.07 55.81 62.43 68.58 83.60 83.97 86.58 81.13 65.77 50.00 44.58 64.08
1975 40.84 42.15 a 52.26 58.70 71.45 78.10 89.35 81.23 79.63 62.42 49.63 41.81 62.30
1976 42.90 47.17 53.32 61.23 73.35 76.53 85.06 80.19 80.20 65.81 51.20 40.03 63.08
1977 29.16 49.04 54.84 69.83 67.87 84.83 85.06 90.74 71.83 63.71 48.37 41.94 63.10
1978 37.00 45.50 58.00 61.70 69.77 82.20 86.32 83.39 73.30 66.45 41.50 39.19 62.03
1979 21.45 44.11 59.06 63.23 75.90 82.73 88.32 86.03 81.17 67.35 40.53 42.77 62.72
1980 30.52 39.07 54.68 66.80 71.16 74.27 85.32 82.65 76.73 64.35 47.87 43.45 61.41
1981 41.68 46.82 60.06 64.50 71.19 75.80 85.03 90.39 78.27 63.87 52.53 39.42 64.13
1982 37.42 47.68 55.94 60.90 71.87 82.03 85.10 86.00 75.03 61.45 45.70 40.16 62.44
1983 45.68 48.57 58.23 64.37 75.87 77.63 82.35 86.77 74.13 63.61 52.90 29.55 63.31
1984 39.87 46.14 57.45 ----- z 68.19 76.67 89.10 86.90 73.63 61.35 47.17 35.03 61.96
1985 29.39 40.86 55.61 67.73 74.84 81.30 93.42 83.29 70.80 63.58 35.27 26.48 60.21
1986 40.52 47.07 59.13 63.87 ----- z ----- z ----- z 92.87 71.79 a 67.65 49.17 35.10 58.57
1987 36.84 ----- z 58.16 70.00 78.00 85.73 84.32 87.65 82.70 68.65 51.90 37.48 67.40
1988 37.84 52.62 57.03 65.57 72.71 78.20 88.52 87.23 78.60 71.58 52.13 37.48 64.96
1989 43.45 33.86 51.33 a ----- z 71.55 82.73 85.68 82.68 ----- z 64.29 52.73 36.06 60.44
1990 46.16 46.48 a 58.94 68.77 69.87 79.10 88.68 86.42 83.93 ----- z 54.47 33.65 65.13
1991 36.52 ----- z 53.97 64.10 69.74 73.83 ----- z 89.55 ----- z 65.52 46.73 43.00 a 60.33
1992 ----- z ----- z ----- z 66.80 77.03 84.87 85.45 88.19 73.43 65.94 46.83 36.65 69.47
1993 29.81 37.04 ----- z 62.00 77.26 77.37 78.84 84.03 79.40 66.48 45.10 39.10 61.49
1994 44.87 41.37 a 59.71 ----- z 73.71 76.23 91.90 87.06 ----- z ----- z ----- z ----- z 67.84
1995 ----- z ----- z ----- z ----- z 74.10 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 74.10
1996 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 78.70 66.81 48.80 39.42 58.43
1997 41.90 49.04 57.03 63.87 77.35 80.40 88.48 91.48 79.03 65.55 52.03 42.52 65.72
1998 44.32 50.61 ----- z 65.40 73.97 83.10 95.97 91.77 ----- z 65.81 53.57 43.97 66.85
1999 47.81 51.57 57.42 65.50 72.19 81.83 89.10 91.16 81.70 65.84 56.53 46.13 67.23
2000 41.42 47.66 57.23 70.03 74.84 83.60 90.71 91.16 78.23 65.55 43.93 35.26 64.97
2001 38.94 46.54 59.52 64.13 77.94 80.27 90.39 92.84 84.40 66.84 52.50 43.16 66.45
2002 45.84 50.61 53.03 65.57 71.58 83.57 93.29 87.61 80.57 64.58 49.87 41.87 65.67
2003 45.23 49.54 60.03 63.80 72.13 85.33 94.00 90.68 82.63 70.58 47.37 39.29 66.72
2004 34.23 45.48 62.84 68.60 73.13 82.87 91.87 89.87 77.93 67.32 51.13 44.29 65.80
2005 37.03 50.71 61.61 65.43 74.90 79.13 91.16 91.55 78.10 65.65 46.40 34.61 64.69
2006 47.52 46.32 54.94 64.37 75.26 81.47 94.61 89.32 80.73 65.42 49.77 34.45 65.35
2007 36.87 45.36 58.00 63.67 75.35 81.43 93.84 87.13 79.67 62.71 49.90 42.23 64.68
2008 37.13 49.79 54.94 60.23 74.32 80.13 91.06 ----- z 78.83 64.45 51.00 ----- z 64.19
2009 ----- z ----- z ----- z ----- z 73.77 82.97 ----- z 89.84 81.70 59.55 51.60 31.90 67.33
2010 ----- z 49.82 57.77 62.40 ----- z 77.37 89.39 87.42 76.23 63.48 46.37 39.10 64.93
2011 44.21 b 46.79 54.71 57.87 68.97 78.10 84.73 a 90.13 a 83.24 a 63.65 50.80 37.83 a 63.42
2012 45.78 d ----- z 55.77 a ----- z ----- z ----- z 91.61 91.30 a 81.47 65.84 50.52 a 43.74 65.75
2013 34.19 50.79 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 42.49
Period of Record Statistics
MEAN 38.08 46.20 56.45 64.93 73.29 80.35 88.49 87.14 78.02 65.00 48.77 39.79 63.89
S.D. 6.76 5.04 3.16 3.63 3.25 3.18 3.32 3.26 3.55 2.76 3.78 4.10 1.65
SKEW -0.68 -1.05 0.39 0.25 0.14 -0.10 -0.39 -0.15 -0.23 0.35 -0.86 -0.50 0.18
MAX 50.43 55.04 64.84 74.28 81.00 86.19 95.97 92.87 84.93 72.00 56.53 48.55 68.34
MIN 21.45 30.48 49.84 57.40 66.06 73.20 78.84 80.19 70.80 59.35 35.27 26.48 60.21
NO YRS 79 80 80 80 81 82 81 81 81 84 83 82 62