SEATTLE JACKSON PARK,

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(457459)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 198606
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
1961 ----- z ----- z 31.00 h 28.00 37.00 41.00 48.00 47.00 36.00 31.00 23.00 21.00 21.00
1962 11.00 15.00 23.00 33.00 35.00 39.00 41.00 43.00 40.00 34.00 29.00 20.00 11.00
1963 10.00 a 26.00 27.00 28.00 35.00 d 37.00 44.00 42.00 41.00 a 33.00 25.00 25.00 10.00
1964 30.00 26.00 26.00 31.00 a 33.00 a 43.00 47.00 46.00 40.00 c 33.00 27.00 6.00 6.00
1965 27.00 25.00 22.00 30.00 32.00 40.00 c 48.00 a 41.00 d 37.00 38.00 b 28.00 22.00 a 22.00
1966 25.00 25.00 26.00 32.00 36.00 44.00 46.00 41.00 44.00 35.00 29.00 29.00 25.00
1967 27.00 26.00 25.00 30.00 38.00 44.00 46.00 46.00 43.00 36.00 26.00 a 20.00 20.00
1968 21.00 25.00 28.00 28.00 36.00 43.00 f 48.00 49.00 40.00 35.00 30.00 3.00 3.00
1969 10.00 25.00 26.00 32.00 a 35.00 46.00 45.00 42.00 42.00 a 31.00 c 28.00 28.00 10.00
1970 23.00 30.00 28.00 33.00 37.00 41.00 a 48.00 47.00 36.00 29.00 23.00 22.00 22.00
1971 22.00 25.00 19.00 31.00 38.00 42.00 42.00 47.00 42.00 26.00 29.00 23.00 19.00
1972 8.00 18.00 28.00 31.00 34.00 42.00 46.00 46.00 31.00 28.00 30.00 8.00 8.00
1973 10.00 27.00 31.00 31.00 38.00 41.00 44.00 43.00 41.00 36.00 26.00 28.00 10.00
1974 15.00 28.00 26.00 32.00 36.00 42.00 44.00 48.00 40.00 33.00 30.00 27.00 15.00
1975 22.00 24.00 26.00 27.00 35.00 40.00 46.00 43.00 38.00 35.00 18.00 25.00 18.00
1976 24.00 19.00 22.00 28.00 33.00 32.00 44.00 47.00 45.00 34.00 23.00 27.00 19.00
1977 19.00 28.00 31.00 31.00 34.00 39.00 38.00 37.00 40.00 32.00 15.00 24.00 15.00
1978 21.00 27.00 26.00 ----- z ----- z 43.00 b 46.00 47.00 40.00 29.00 18.00 5.00 5.00
1979 10.00 17.00 29.00 33.00 33.00 39.00 44.00 46.00 43.00 34.00 26.00 26.00 10.00
1980 8.00 26.00 26.00 30.00 35.00 41.00 43.00 40.00 43.00 30.00 30.00 18.00 8.00
1981 28.00 21.00 27.00 28.00 36.00 41.00 42.00 b 46.00 38.00 30.00 26.00 25.00 21.00
1982 8.00 18.00 26.00 27.00 33.00 39.00 40.00 42.00 38.00 30.00 22.00 20.00 8.00
1983 22.00 25.00 30.00 29.00 36.00 42.00 46.00 45.00 33.00 31.00 22.00 2.00 2.00
1984 15.00 27.00 30.00 29.00 35.00 38.00 45.00 44.00 36.00 27.00 28.00 15.00 15.00
1985 19.00 12.00 28.00 28.00 33.00 43.00 a 50.00 a 45.00 a 41.00 31.00 a 10.00 14.00 a 10.00
1986 31.00 17.00 34.00 31.00 38.00 45.00 u ----- z ----- z ----- z ----- z ----- z ----- z 17.00
Period of Record Statistics
MEAN 18.64 23.28 26.80 30.04 35.24 40.79 44.84 44.40 39.52 32.04 24.84 19.32 13.60
S.D. 7.54 4.71 3.21 1.93 1.81 2.81 2.79 2.90 3.37 3.03 5.15 8.38 6.18
SKEW -0.08 -0.85 -0.20 -0.02 0.02 -1.06 -0.51 -0.64 -0.70 -0.09 -1.26 -0.89 0.10
MAX 31.00 30.00 34.00 33.00 38.00 46.00 50.00 49.00 45.00 38.00 30.00 29.00 25.00
MIN 8.00 12.00 19.00 27.00 32.00 32.00 38.00 37.00 31.00 26.00 10.00 2.00 2.00
NO YRS 25 25 25 25 25 24 25 25 25 25 25 25 20