WALLA WALLA FAA AIRPORT, WASHINGTON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(458928)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1949 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 30.94 30.94
1950 8.52 26.96 34.90 38.73 45.39 54.00 59.97 60.06 52.87 44.61 36.03 34.55 41.38
1951 27.84 30.82 32.47 a 39.77 46.77 53.23 60.48 58.90 51.90 42.65 34.13 23.74 41.89
1952 23.13 31.83 35.58 41.73 48.35 52.37 60.32 59.71 54.37 46.00 27.50 30.45 42.61
1953 39.16 33.39 36.32 39.90 44.90 49.57 58.42 59.10 52.87 43.77 36.93 33.65 44.00
1954 26.48 33.39 29.87 39.17 46.48 49.30 57.35 56.00 50.30 39.77 39.90 28.23 41.35
1955 27.65 28.11 29.06 36.67 43.61 53.27 57.77 57.52 51.37 43.68 26.13 26.00 40.07
1956 27.06 19.86 34.81 41.93 49.97 50.77 61.90 58.45 51.90 42.29 31.10 30.32 41.70
1957 12.52 29.21 35.48 42.10 51.06 54.90 58.58 56.97 53.53 41.48 32.40 33.94 41.85
1958 32.55 39.07 33.74 40.53 52.26 57.33 63.06 63.29 51.50 42.65 34.77 31.71 45.21
1959 28.48 31.18 36.03 40.70 44.03 54.17 60.29 57.53 a 51.17 43.23 28.33 28.65 41.98
1960 19.00 30.66 35.32 41.73 45.19 52.37 63.48 57.10 51.83 44.42 35.60 25.77 41.87
1961 31.45 38.32 38.65 40.37 46.81 57.33 63.42 64.10 48.73 40.48 26.83 29.77 43.86
1962 25.00 30.50 33.74 41.90 45.10 51.90 58.94 57.68 51.73 44.13 38.17 33.16 42.66
1963 19.84 33.64 36.58 40.20 47.61 53.63 57.32 60.71 57.17 46.94 38.03 28.80 a 43.37
1964 34.42 33.07 36.03 38.87 44.94 53.33 58.84 56.19 48.10 38.45 34.73 25.52 41.87
1965 31.10 34.79 31.94 44.20 45.74 53.60 61.84 61.61 49.97 46.74 38.97 31.39 44.32
1966 32.32 32.71 36.06 40.73 47.42 52.47 58.45 59.42 55.57 42.29 37.57 34.58 44.13
1967 36.77 34.82 35.32 37.60 46.26 55.53 61.87 63.87 56.97 44.74 34.20 30.13 44.84
1968 30.97 36.31 38.68 38.93 47.13 53.77 62.55 60.39 54.53 44.32 38.37 26.52 44.37
1969 17.06 30.36 36.90 42.17 50.23 57.97 60.23 58.68 55.33 41.35 36.17 31.90 43.20
1970 29.32 36.43 36.65 38.40 49.10 58.47 62.61 61.10 49.10 41.68 35.20 30.94 44.08
1971 34.39 33.18 34.35 38.77 47.26 50.60 58.84 62.84 46.67 39.97 36.60 30.71 42.85
1972 26.35 30.28 39.74 37.57 49.16 55.27 59.52 61.65 49.73 42.45 36.30 22.32 42.53
1973 25.19 32.64 39.19 40.90 49.94 56.30 61.71 60.87 53.93 44.87 36.47 36.06 44.84
1974 24.00 36.61 37.45 42.37 46.06 56.50 59.39 64.03 55.47 44.19 39.30 35.39 45.06
1975 30.19 31.32 36.16 39.03 48.58 54.80 66.00 58.06 52.40 46.29 35.87 33.48 44.35
1976 32.74 31.90 33.29 39.17 44.71 49.53 60.19 58.32 55.27 42.52 37.57 29.87 42.92
1977 21.81 35.86 36.65 43.33 46.23 58.80 60.48 66.52 53.20 43.94 34.60 32.03 44.45
1978 29.13 34.43 37.65 39.97 44.45 53.43 60.00 61.03 54.00 42.42 27.73 25.74 42.50
1979 14.84 33.75 38.16 42.43 49.81 56.30 61.65 61.65 54.30 47.10 33.40 34.48 43.99
1980 22.90 32.24 36.65 45.40 49.84 52.53 61.03 57.87 53.80 43.68 38.67 34.58 44.10
1981 34.65 33.29 38.48 42.83 49.10 54.37 59.68 64.58 55.63 45.13 38.40 32.61 45.73
1982 28.81 34.64 38.35 39.43 47.45 58.97 60.55 62.90 53.17 43.84 33.80 33.77 44.64
1983 36.35 38.82 41.74 41.67 50.16 54.47 58.84 63.58 49.90 44.39 41.63 19.23 45.06
1984 30.42 36.00 41.48 42.53 47.71 55.17 63.13 61.84 50.10 41.77 38.33 25.06 44.46
1985 24.65 27.04 35.29 44.73 50.00 54.63 66.13 58.71 48.93 42.74 21.60 17.23 40.97
1986 29.29 32.82 41.00 40.70 48.32 57.23 57.26 64.16 50.30 43.94 37.53 28.32 44.24
1987 25.23 33.50 39.68 45.43 50.00 55.13 58.16 58.10 53.97 41.81 34.63 27.68 43.61
1988 27.45 32.66 35.61 43.43 47.19 54.30 60.68 58.87 51.73 47.29 39.10 27.71 43.84
1989 31.06 17.29 34.06 42.77 46.55 53.77 58.48 58.81 51.73 43.19 38.10 29.84 42.14
1990 35.26 31.04 37.06 45.40 47.42 54.77 62.74 62.68 57.13 42.81 39.57 18.48 44.53
1991 26.00 37.39 34.84 40.43 45.45 49.77 57.90 61.77 51.67 41.94 36.40 33.16 43.06
1992 34.77 36.17 39.94 44.67 49.13 58.43 60.94 60.84 51.23 44.71 35.63 27.03 45.29
1993 18.26 24.14 35.03 41.87 50.19 52.57 55.45 56.71 51.30 44.10 26.77 32.06 40.70
1994 36.03 30.54 37.87 46.23 52.42 54.93 65.10 61.77 56.77 44.48 36.60 32.87 46.30
1995 31.29 36.91 f ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 31.29
1996 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1997 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1998 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1999 ----- z ----- z 36.77 38.28 a 44.10 52.87 58.13 a 62.00 49.63 40.23 a 39.03 33.84 45.49
2000 31.52 33.72 36.10 a 43.63 48.94 53.87 60.48 60.52 51.70 42.32 29.67 27.39 43.32
2001 29.84 30.43 36.55 39.90 47.52 51.80 ----- z ----- z ----- z ----- z ----- z ----- z 39.34
2002 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2003 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2004 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2005 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2008 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 31.42 30.86 37.97 38.32 k 45.97 53.27 57.96 c 62.14 b 56.30 46.45 34.83 27.61 44.07
2012 28.71 32.52 36.45 42.69 a 47.00 52.77 60.74 61.10 53.43 44.52 40.13 36.42 44.71
2013 29.10 36.00 40.32 48.50 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.14
Period of Record Statistics
MEAN 27.89 32.33 36.43 41.26 47.58 54.13 60.39 60.45 52.53 43.44 35.09 29.71 43.42
S.D. 6.36 4.17 2.62 2.31 2.19 2.44 2.30 2.50 2.54 1.99 4.33 4.45 1.44
SKEW -0.91 -1.41 -0.37 0.24 0.20 0.05 0.53 0.18 0.01 -0.13 -1.18 -0.91 -0.33
MAX 39.16 39.07 41.74 46.23 52.42 58.97 66.13 66.52 57.17 47.29 41.63 36.42 46.30
MIN 8.52 17.29 29.06 36.67 43.61 49.30 55.45 56.00 46.67 38.45 21.60 17.23 40.07
NO YRS 51 50 51 49 50 50 49 49 49 49 49 50 47