PROSSER 4 NE, WASHINGTON

Monthly Average Minimum 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 55.58 ----- z ----- z ----- z ----- z ----- z 55.58
1926 ----- z 32.00 g 33.85 e 38.45 a 43.20 a 52.15 d 55.29 c 51.77 42.00 d 39.04 c 31.86 a 21.79 b 40.94
1927 21.65 h 30.46 31.10 a 33.50 39.16 49.13 50.29 53.16 45.72 e 38.15 e 33.76 i 17.67 g 41.19
1928 ----- z ----- z ----- z 33.23 d 43.04 f 47.21 f ----- z ----- z 43.44 n 41.04 c 31.22 g 25.04 d 33.10
1929 15.11 c 12.57 31.04 c 34.79 a 40.83 a 47.59 c 51.31 e 52.33 d 45.56 e 38.93 b 21.32 e 27.83 b 34.93
1930 4.39 32.29 d 33.69 b 35.89 b 40.86 c 47.33 f 51.07 d 53.36 f 47.14 b 34.60 a 29.95 h 26.86 c 34.09
1931 29.29 27.89 33.03 38.57 46.32 50.63 54.52 52.29 48.00 a 38.87 28.43 19.71 38.96
1932 21.47 a 25.55 35.13 39.23 43.00 48.77 52.26 51.90 44.77 41.43 a 34.53 21.03 38.26
1933 25.35 20.18 32.03 36.10 40.90 48.97 52.94 53.52 44.70 41.90 33.90 34.55 38.75
1934 31.39 30.57 35.58 43.93 46.03 49.73 52.58 53.77 45.40 43.74 37.23 30.26 41.69
1935 27.32 28.96 29.48 34.17 40.90 48.87 53.13 49.84 48.00 36.68 27.00 27.48 37.65
1936 29.90 14.83 30.74 40.17 46.81 52.43 52.45 51.16 44.26 c 38.00 22.70 27.87 37.61
1937 6.32 20.71 34.68 36.63 41.23 51.73 55.16 49.74 46.90 41.55 36.17 a 29.68 37.54
1938 28.06 27.82 31.67 a 38.13 40.65 50.30 55.84 48.26 50.50 39.90 25.17 25.42 38.48
1939 28.26 25.25 34.03 37.20 44.52 47.50 53.80 a 53.55 47.23 38.23 27.67 31.00 39.02
1940 23.84 30.86 35.32 38.50 43.58 48.63 54.10 51.68 50.00 42.32 26.67 25.74 39.27
1941 26.52 27.61 33.13 38.47 43.35 48.83 56.52 55.16 45.13 39.35 33.13 28.35 39.63
1942 18.32 27.21 28.61 37.20 43.81 46.70 54.03 54.48 46.27 37.97 30.63 27.23 37.71
1943 14.87 28.82 28.87 39.63 39.84 46.03 51.87 49.45 46.17 39.61 33.07 25.77 37.00
1944 21.71 27.34 28.19 36.63 42.45 48.83 52.97 50.81 47.40 40.74 31.67 26.06 37.90
1945 30.13 30.54 32.19 34.23 44.55 45.97 52.26 52.26 44.33 39.35 31.20 26.42 38.62
1946 26.29 28.00 a 33.32 37.10 46.16 49.07 52.97 53.03 45.07 35.74 27.03 27.84 38.47
1947 18.13 28.00 33.52 38.90 47.39 49.43 52.61 49.29 48.60 43.42 32.27 28.81 39.20
1948 24.32 24.31 28.65 34.43 44.84 53.57 50.03 51.90 45.40 35.94 30.33 20.94 37.05
1949 6.48 24.36 31.97 35.33 45.32 46.47 49.50 a 50.71 48.93 33.84 36.17 27.84 36.41
1950 6.74 22.89 31.71 35.20 39.58 51.73 52.24 f 52.48 46.23 41.06 34.30 33.03 35.91
1951 26.29 27.39 27.58 35.24 e 43.74 50.23 52.77 50.90 47.57 39.42 30.14 a 21.74 37.75
1952 19.77 29.41 31.00 36.73 44.32 49.97 53.10 51.84 47.40 41.00 25.10 29.65 h 39.06
1953 36.03 30.68 32.06 36.37 40.52 45.60 50.71 53.26 h 46.77 40.58 34.47 29.23 a 38.46
1954 21.35 31.14 27.45 35.77 43.73 i 46.77 50.39 50.06 46.27 36.71 37.37 25.35 37.15
1955 25.55 25.64 26.52 33.53 41.06 49.40 50.73 e 49.35 46.80 39.19 25.37 23.26 36.37
1956 25.16 17.14 32.52 37.90 48.42 47.27 54.77 52.16 46.63 39.81 30.43 27.58 38.32
1957 10.16 27.52 c 33.26 38.13 49.06 50.77 50.16 49.58 49.03 39.87 29.93 30.58 38.17
1958 30.19 36.07 a 31.06 37.30 49.16 54.37 57.23 54.00 46.73 37.61 31.93 29.71 41.28
1959 25.42 28.21 30.74 37.40 41.23 49.57 52.94 49.13 47.27 38.71 26.03 25.84 37.71
1960 14.94 27.55 30.48 37.97 42.35 48.40 53.97 50.10 46.13 39.84 31.60 23.65 37.25
1961 28.87 35.11 34.77 37.73 44.16 52.27 55.16 56.61 43.80 36.71 25.17 26.90 39.77
1962 23.48 29.14 29.61 39.83 42.97 47.86 b 52.26 52.74 48.17 40.87 35.63 32.00 39.55
1963 19.58 30.75 33.23 38.57 44.16 50.57 52.16 53.68 52.00 42.10 34.57 27.00 39.86
1964 ----- z 26.83 30.39 35.70 41.74 50.47 54.52 51.26 45.67 38.26 32.40 22.71 39.08
1965 27.45 31.75 29.26 39.13 42.42 50.17 55.19 56.03 45.37 42.26 37.03 27.00 40.26
1966 29.16 29.39 32.87 38.37 44.74 49.07 53.19 54.74 50.70 39.84 35.13 32.10 40.78
1967 32.68 31.79 32.39 34.41 c 43.87 53.13 54.70 a 55.97 50.93 40.81 31.73 25.90 40.69
1968 27.00 31.93 36.13 36.20 43.74 49.03 55.00 52.61 46.90 35.10 32.30 20.84 38.90
1969 13.35 22.93 32.52 37.63 46.84 54.37 50.23 48.06 47.10 33.71 29.90 27.32 37.00
1970 22.16 30.71 32.29 34.87 41.77 51.37 52.48 49.03 42.27 35.10 29.80 23.68 37.13
1971 27.68 27.75 28.71 35.10 43.94 45.83 51.94 52.68 39.77 33.74 30.13 24.45 b 36.81
1972 22.23 27.00 33.71 34.17 46.81 51.27 54.65 54.03 42.53 35.90 31.83 18.48 37.72
1973 21.65 29.18 32.06 36.47 43.87 49.47 53.26 50.10 46.53 37.55 31.83 30.31 b 38.52
1974 20.03 29.46 32.52 38.03 41.16 50.33 52.23 50.97 45.00 34.68 32.33 27.65 37.87
1975 23.84 24.18 28.97 32.60 41.26 47.80 56.90 49.19 43.33 37.65 28.50 26.87 36.76
1976 26.19 25.83 28.55 36.73 43.03 46.33 52.10 52.39 47.80 35.42 28.90 21.52 37.07
1977 18.52 28.57 32.16 40.40 41.84 52.60 51.77 57.65 45.50 35.97 28.60 27.94 38.46
1978 26.13 31.50 35.42 39.00 41.93 a 51.00 54.65 53.23 46.70 35.13 25.30 20.81 38.40
1979 8.23 27.82 33.06 37.73 44.97 49.13 53.58 53.26 47.53 41.06 27.53 28.65 37.71
1980 15.42 26.59 31.26 40.13 44.84 47.93 51.84 48.65 47.33 36.23 32.97 30.00 37.76
1981 30.87 29.18 34.23 36.73 43.26 47.80 50.94 53.87 45.27 35.61 30.27 24.23 38.52
1982 18.90 27.36 31.13 33.63 43.26 52.17 52.35 52.81 46.47 36.77 27.57 25.61 37.34
1983 30.16 32.11 37.29 36.37 43.61 46.93 52.00 55.00 43.30 36.77 36.20 17.33 a 38.92
1984 25.81 31.21 36.68 ----- z 42.13 49.33 52.32 52.35 45.03 34.77 32.67 20.87 38.47
1985 23.61 22.32 30.65 39.50 46.39 50.83 57.81 52.26 45.47 38.19 20.00 18.55 37.13
1986 28.26 31.64 38.13 36.37 ----- z ----- z ----- z 56.61 47.37 40.35 33.57 26.23 37.61
1987 26.03 a ----- z 35.77 41.50 47.26 51.50 54.29 53.13 47.67 38.06 32.83 25.68 41.25
1988 25.10 29.66 33.13 41.30 44.13 51.17 53.97 51.74 45.60 43.87 36.00 26.87 40.21
1989 29.30 a 19.00 34.29 ----- z 45.19 52.97 52.26 54.39 ----- z 39.71 35.83 27.94 39.09
1990 33.00 28.14 33.10 41.70 44.03 51.80 58.10 56.84 51.10 ----- z 34.93 18.32 41.01
1991 21.42 ----- z 34.06 38.00 44.71 48.50 ----- z 56.81 ----- z 37.94 34.93 30.57 a 38.55
1992 ----- z ----- z ----- z 41.43 46.16 54.47 55.58 53.68 45.67 41.42 33.63 23.55 43.95
1993 18.03 a 24.79 ----- z 38.73 49.58 49.50 50.42 51.52 45.20 39.42 22.93 30.23 38.21
1994 31.32 27.82 34.10 ----- z 47.23 49.47 55.00 52.65 ----- z ----- z ----- z ----- z 42.51
1995 ----- z ----- z ----- z ----- z 46.81 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.81
1996 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.20 34.42 26.23 20.90 30.69
1997 23.10 30.04 34.84 37.83 49.65 52.70 58.10 59.74 50.83 38.84 32.43 25.84 41.16
1998 25.71 31.39 ----- z 38.13 46.68 54.13 62.68 56.87 ----- z 35.10 32.93 25.00 40.86
1999 30.90 30.15 a 33.68 36.63 42.16 52.40 56.13 57.58 46.33 37.65 34.43 31.39 40.79
2000 24.48 28.03 33.29 39.27 45.81 52.57 56.48 53.52 45.83 36.10 23.00 23.48 38.49
2001 25.06 23.29 30.97 35.63 45.03 48.27 55.77 56.39 46.50 35.90 30.80 23.77 38.12
2002 27.39 24.25 27.23 39.87 47.06 56.37 62.00 58.65 50.67 38.81 32.23 32.10 41.38
2003 33.84 31.71 39.61 42.03 47.48 57.43 61.87 60.26 52.83 46.06 28.23 29.58 44.25
2004 24.68 30.21 39.10 41.80 49.39 56.47 62.90 63.03 51.17 43.48 31.87 29.61 43.64
2005 26.61 27.32 37.90 41.80 52.42 53.10 61.35 59.81 50.40 43.87 32.60 22.00 42.43
2006 33.42 28.50 34.39 41.97 47.94 56.17 63.35 58.42 51.13 41.23 35.33 24.48 43.03
2007 23.61 31.71 37.71 40.00 47.55 53.93 64.16 57.35 51.07 40.97 31.20 27.23 42.21
2008 22.26 32.28 33.94 35.97 50.94 51.90 61.48 ----- z 50.27 39.77 34.53 ----- z 41.33
2009 ----- z ----- z ----- z ----- z 46.48 56.07 ----- z 57.90 50.77 38.37 a 31.47 18.74 42.83
2010 ----- z 33.46 33.77 40.87 ----- z 50.60 59.55 54.81 45.97 42.71 26.80 29.14 c 41.77
2011 27.40 a 24.23 f 27.72 m 31.64 e 43.87 a 47.93 49.64 f 58.45 b 53.00 a 42.57 c 27.36 b 23.08 f 41.53
2012 25.06 n ----- z 34.25 g ----- z ----- z ----- z 59.57 c 56.30 a 50.62 a 40.26 35.24 a 28.06 45.01
2013 23.61 26.81 b ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 25.21
Period of Record Statistics
MEAN 23.67 27.80 32.60 37.54 44.46 50.39 54.48 53.40 46.99 38.82 30.91 26.09 38.85
S.D. 6.78 4.16 2.81 2.52 2.81 2.72 3.47 3.15 2.68 2.77 3.95 3.81 1.89
SKEW -0.99 -1.27 0.13 0.09 0.42 0.47 1.12 0.61 0.10 0.11 -0.61 -0.30 0.88
MAX 36.03 36.07 39.61 43.93 52.42 57.43 64.16 63.03 53.00 46.06 37.37 34.55 44.25
MIN 4.39 12.57 26.52 31.64 39.16 45.60 49.50 48.06 39.77 33.71 20.00 17.33 34.93
NO YRS 78 78 78 80 81 81 80 81 81 84 82 81 61