WALLA WALLA FAA AIRPORT, WASHINGTON

Monthly Extreme 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 18.00 18.00
1950 -16.00 -16.00 20.00 31.00 36.00 44.00 50.00 53.00 33.00 32.00 25.00 24.00 -16.00
1951 1.00 14.00 25.00 a 26.00 37.00 40.00 50.00 48.00 37.00 25.00 20.00 3.00 1.00
1952 7.00 20.00 26.00 30.00 38.00 41.00 44.00 47.00 43.00 34.00 13.00 18.00 7.00
1953 24.00 25.00 24.00 29.00 38.00 44.00 51.00 51.00 42.00 31.00 26.00 27.00 24.00
1954 -7.00 24.00 17.00 33.00 26.00 41.00 46.00 48.00 35.00 31.00 24.00 18.00 -7.00
1955 19.00 19.00 10.00 30.00 35.00 44.00 43.00 47.00 39.00 34.00 -4.00 9.00 -4.00
1956 -6.00 -9.00 21.00 28.00 40.00 42.00 52.00 50.00 41.00 32.00 17.00 5.00 -9.00
1957 -18.00 8.00 28.00 34.00 42.00 48.00 50.00 50.00 33.00 32.00 24.00 23.00 -18.00
1958 22.00 31.00 24.00 35.00 40.00 50.00 49.00 56.00 40.00 27.00 15.00 24.00 15.00
1959 -2.00 24.00 29.00 30.00 37.00 46.00 49.00 50.00 a 39.00 31.00 3.00 16.00 -2.00
1960 7.00 12.00 15.00 33.00 35.00 41.00 51.00 45.00 40.00 32.00 26.00 19.00 7.00
1961 18.00 33.00 29.00 28.00 36.00 47.00 52.00 57.00 40.00 27.00 18.00 1.00 1.00
1962 -4.00 9.00 26.00 33.00 34.00 41.00 43.00 49.00 39.00 37.00 28.00 20.00 -4.00
1963 -3.00 17.00 27.00 32.00 40.00 46.00 48.00 51.00 44.00 30.00 24.00 15.00 a -3.00
1964 23.00 25.00 22.00 28.00 36.00 43.00 50.00 46.00 39.00 32.00 25.00 -7.00 -7.00
1965 20.00 26.00 16.00 31.00 34.00 46.00 52.00 48.00 32.00 36.00 24.00 20.00 16.00
1966 21.00 22.00 23.00 20.00 39.00 36.00 51.00 49.00 44.00 33.00 27.00 26.00 20.00
1967 29.00 26.00 26.00 30.00 35.00 46.00 52.00 53.00 43.00 36.00 22.00 5.00 5.00
1968 12.00 24.00 30.00 27.00 36.00 42.00 53.00 53.00 45.00 37.00 33.00 -24.00 -24.00
1969 -5.00 20.00 28.00 32.00 40.00 51.00 53.00 47.00 44.00 28.00 28.00 25.00 -5.00
1970 17.00 32.00 24.00 32.00 37.00 48.00 54.00 53.00 37.00 31.00 12.00 16.00 12.00
1971 15.00 25.00 21.00 31.00 36.00 44.00 40.00 49.00 35.00 19.00 24.00 13.00 13.00
1972 -5.00 -3.00 32.00 22.00 35.00 50.00 50.00 51.00 35.00 27.00 27.00 -9.00 -9.00
1973 -7.00 27.00 33.00 26.00 37.00 45.00 49.00 50.00 42.00 33.00 27.00 21.00 -7.00
1974 -10.00 29.00 28.00 34.00 36.00 46.00 48.00 56.00 44.00 32.00 32.00 27.00 -10.00
1975 11.00 17.00 23.00 30.00 39.00 48.00 57.00 47.00 42.00 35.00 21.00 21.00 11.00
1976 19.00 11.00 18.00 30.00 39.00 40.00 47.00 49.00 43.00 31.00 20.00 20.00 11.00
1977 -2.00 29.00 30.00 32.00 39.00 45.00 50.00 53.00 41.00 35.00 11.00 10.00 -2.00
1978 2.00 26.00 26.00 31.00 38.00 40.00 50.00 51.00 43.00 28.00 9.00 -6.00 -6.00
1979 -6.00 -7.00 28.00 32.00 41.00 46.00 50.00 57.00 48.00 36.00 20.00 26.00 -7.00
1980 4.00 20.00 24.00 33.00 42.00 46.00 53.00 45.00 43.00 33.00 29.00 11.00 4.00
1981 29.00 15.00 30.00 32.00 40.00 48.00 47.00 55.00 42.00 35.00 29.00 21.00 15.00
1982 -1.00 19.00 33.00 32.00 36.00 47.00 48.00 53.00 40.00 30.00 24.00 26.00 -1.00
1983 22.00 25.00 31.00 33.00 39.00 48.00 49.00 55.00 33.00 35.00 23.00 -15.00 -15.00
1984 15.00 29.00 33.00 35.00 41.00 42.00 52.00 53.00 36.00 28.00 27.00 1.00 1.00
1985 11.00 0.00 30.00 35.00 36.00 43.00 56.00 49.00 32.00 29.00 -11.00 -2.00 -11.00
1986 18.00 15.00 32.00 33.00 39.00 44.00 49.00 58.00 40.00 35.00 20.00 23.00 15.00
1987 5.00 25.00 22.00 34.00 35.00 40.00 51.00 50.00 40.00 32.00 20.00 13.00 5.00
1988 8.00 13.00 27.00 33.00 36.00 44.00 47.00 50.00 40.00 28.00 31.00 14.00 8.00
1989 16.00 -13.00 9.00 33.00 37.00 46.00 52.00 53.00 45.00 30.00 26.00 21.00 -13.00
1990 25.00 9.00 29.00 38.00 38.00 44.00 46.00 53.00 49.00 33.00 32.00 -14.00 -14.00
1991 15.00 30.00 29.00 33.00 34.00 39.00 48.00 48.00 40.00 24.00 27.00 22.00 15.00
1992 26.00 28.00 30.00 34.00 37.00 44.00 52.00 42.00 41.00 29.00 25.00 15.00 15.00
1993 -4.00 7.00 4.00 35.00 40.00 46.00 49.00 45.00 37.00 33.00 5.00 22.00 -4.00
1994 26.00 9.00 29.00 38.00 40.00 46.00 50.00 54.00 44.00 36.00 28.00 16.00 9.00
1995 19.00 7.00 f ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 7.00
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 30.00 29.00 a 34.00 42.00 48.00 a 46.00 39.00 28.00 a 30.00 26.00 26.00
2000 25.00 25.00 32.00 a 36.00 37.00 42.00 49.00 51.00 33.00 32.00 22.00 17.00 17.00
2001 24.00 23.00 29.00 30.00 34.00 44.00 ----- z ----- z ----- z ----- z ----- z ----- z 23.00
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 10.00 10.00 33.00 28.00 k 37.00 46.00 48.00 c 53.00 b 43.00 33.00 28.00 17.00 10.00
2012 18.00 23.00 26.00 32.00 a 32.00 45.00 46.00 49.00 41.00 33.00 29.00 25.00 18.00
2013 19.00 30.00 29.00 45.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 19.00
Period of Record Statistics
MEAN 9.92 17.64 25.49 31.39 37.10 44.34 49.47 50.53 40.00 31.43 21.73 13.66 1.43
S.D. 12.68 11.95 6.39 3.44 2.83 3.10 3.18 3.57 4.07 3.62 9.10 12.30 11.60
SKEW -0.37 -1.16 -1.40 -0.97 -1.04 -0.20 -0.45 0.04 -0.28 -0.92 -1.69 -1.26 -0.03
MAX 29.00 33.00 33.00 38.00 42.00 51.00 57.00 58.00 49.00 37.00 33.00 27.00 24.00
MIN -18.00 -16.00 4.00 20.00 26.00 36.00 40.00 42.00 32.00 19.00 -11.00 -24.00 -24.00
NO YRS 51 50 51 49 50 50 49 49 49 49 49 50 47