WALLA WALLA 13 ESE,

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(358985)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199011
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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 38.00 29.00 23.00 16.00 a 0.00 a 0.00
1949 -10.00 b -3.00 21.00 24.00 a 25.00 a 30.00 35.00 34.00 b 29.00 a 17.00 23.00 12.00 -10.00
1950 -18.00 -16.00 15.00 ----- z 25.00 31.00 a 40.00 37.00 26.00 25.00 21.00 20.00 a -18.00
1951 -2.00 6.00 18.00 25.00 29.00 31.00 a 41.00 37.00 32.00 22.00 17.00 6.00 -2.00
1952 -2.00 14.00 18.00 24.00 a 29.00 34.00 36.00 a 35.00 32.00 28.00 7.00 10.00 -2.00
1953 27.00 15.00 17.00 20.00 a 29.00 34.00 38.00 38.00 31.00 22.00 20.00 21.00 15.00
1954 -3.00 15.00 12.00 27.00 20.00 30.00 38.00 37.00 27.00 26.00 20.00 12.00 -3.00
1955 16.00 a 12.00 b -1.00 25.00 27.00 a 33.00 a 34.00 a 36.00 a 30.00 30.00 a -8.00 8.00 -8.00
1956 -3.00 -9.00 9.00 24.00 30.00 34.00 39.00 39.00 33.00 a 28.00 12.00 6.00 -9.00
1957 -15.00 a 2.00 24.00 29.00 36.00 38.00 40.00 37.00 30.00 28.00 17.00 20.00 -15.00
1958 17.00 26.00 20.00 30.00 32.00 39.00 39.00 41.00 30.00 26.00 15.00 o 23.00 15.00
1959 -4.00 19.00 23.00 27.00 29.00 36.00 38.00 38.00 34.00 27.00 5.00 18.00 -4.00
1960 2.00 2.00 10.00 30.00 28.00 35.00 39.00 35.00 31.00 29.00 23.00 15.00 2.00
1961 10.00 29.00 21.00 25.00 30.00 38.00 40.00 42.00 29.00 24.00 15.00 -1.00 -1.00
1962 -9.00 0.00 19.00 29.00 29.00 35.00 36.00 38.00 30.00 30.00 21.00 14.00 -9.00
1963 -13.00 13.00 22.00 28.00 31.00 a 38.00 36.00 39.00 35.00 26.00 21.00 8.00 -13.00
1964 17.00 18.00 20.00 24.00 24.00 a 34.00 39.00 35.00 33.00 29.00 19.00 -16.00 -16.00
1965 18.00 14.00 11.00 26.00 29.00 36.00 39.00 35.00 27.00 31.00 25.00 10.00 10.00
1966 13.00 7.00 14.00 20.00 30.00 30.00 39.00 37.00 35.00 27.00 25.00 20.00 7.00
1967 22.00 19.00 17.00 25.00 28.00 39.00 42.00 39.00 a 34.00 c 29.00 a 18.00 7.00 a 7.00
1968 10.00 18.00 a 25.00 21.00 a 30.00 36.00 39.00 a 40.00 34.00 28.00 26.00 a -18.00 -18.00
1969 -5.00 a 18.00 17.00 a 27.00 b 28.00 a 40.00 39.00 37.00 b 31.00 23.00 b 20.00 b 17.00 a -5.00
1970 10.00 25.00 a 21.00 25.00 b 28.00 38.00 a 40.00 a 39.00 b 26.00 b 24.00 a 12.00 11.00 10.00
1971 9.00 18.00 11.00 26.00 29.00 36.00 35.00 c 40.00 b 30.00 11.00 a 22.00 8.00 8.00
1972 -3.00 -1.00 24.00 25.00 b 28.00 32.00 38.00 e 38.00 30.00 25.00 a 23.00 -8.00 -8.00
1973 -4.00 19.00 25.00 23.00 a 28.00 b 30.00 e 38.00 e 36.00 33.00 27.00 22.00 18.00 -4.00
1974 -8.00 21.00 19.00 27.00 30.00 35.00 39.00 39.00 30.00 k 26.00 a 25.00 10.00 -8.00
1975 10.00 12.00 a 15.00 a 20.00 29.00 a 35.00 a 46.00 z 40.00 b 34.00 25.00 14.00 10.00 o 10.00
1976 ----- z 22.00 q ----- z ----- z ----- z ----- z 42.00 p 40.00 f 34.00 c ----- z 16.00 b 20.00 16.00
1977 1.00 18.00 26.00 26.00 32.00 c 35.00 36.00 38.00 34.00 ----- z ----- z 10.00 d 1.00
1978 -2.00 22.00 i 22.00 a 27.00 a 29.00 ----- z ----- z ----- z ----- z ----- z 4.00 e ----- z -2.00
1979 ----- z ----- z ----- z ----- z 32.00 32.00 39.00 a 43.00 39.00 30.00 12.00 21.00 12.00
1980 -6.00 17.00 23.00 25.00 33.00 35.00 a 39.00 35.00 33.00 30.00 19.00 10.00 o -6.00
1981 12.00 k 16.00 b 26.00 29.00 ----- z ----- z ----- z 40.00 c 31.00 25.00 23.00 20.00 12.00
1982 -3.00 7.00 22.00 25.00 28.00 33.00 38.00 42.00 32.00 28.00 12.00 15.00 -3.00
1983 15.00 19.00 24.00 25.00 29.00 37.00 38.00 42.00 27.00 29.00 b ----- z ----- z 15.00
1984 23.00 y 22.00 25.00 27.00 29.00 30.00 38.00 39.00 29.00 23.00 25.00 0.00 0.00
1985 4.00 -5.00 18.00 28.00 27.00 33.00 42.00 37.00 26.00 21.00 -8.00 3.00 a -8.00
1986 21.00 15.00 28.00 ----- z ----- z ----- z ----- z ----- z ----- z 28.00 12.00 16.00 12.00
1987 2.00 15.00 21.00 27.00 29.00 30.00 42.00 36.00 33.00 26.00 23.00 5.00 2.00
1988 5.00 i 10.00 23.00 27.00 30.00 35.00 37.00 38.00 32.00 25.00 22.00 3.00 3.00
1989 13.00 -14.00 10.00 b 28.00 29.00 37.00 39.00 40.00 34.00 25.00 23.00 18.00 -14.00
1990 22.00 5.00 24.00 28.00 30.00 35.00 40.00 40.00 36.00 26.00 28.00 ----- z 5.00
Period of Record Statistics
MEAN 4.03 11.23 18.98 25.74 28.90 34.45 38.49 38.15 31.38 25.80 17.30 10.05 -4.26
S.D. 11.63 10.69 5.97 2.59 2.59 2.89 1.91 2.21 2.98 3.77 8.22 9.79 9.05
SKEW 0.13 -0.86 -1.11 -0.63 -0.65 -0.07 -0.30 0.20 0.00 -1.74 -1.55 -1.11 0.36
MAX 27.00 29.00 28.00 30.00 36.00 40.00 42.00 43.00 39.00 31.00 28.00 23.00 15.00
MIN -18.00 -16.00 -1.00 20.00 20.00 30.00 34.00 34.00 26.00 11.00 -8.00 -18.00 -18.00
NO YRS 37 39 40 38 39 38 37 40 40 40 40 38 19