SEATTLE WB CITY, WASHINGTON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(457488)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197210
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 51.00 49.00 53.00 43.00 36.00 34.00 21.00 21.00
1949 20.00 23.00 34.00 39.00 41.00 47.00 48.00 51.00 46.00 33.00 40.00 27.00 20.00
1950 11.00 12.00 35.00 37.00 40.00 47.00 54.00 50.00 42.00 41.00 30.00 35.00 11.00
1951 20.00 30.00 29.00 38.00 41.00 49.00 a 52.00 49.00 48.00 38.00 32.00 23.00 20.00
1952 19.00 32.00 34.00 36.00 39.00 45.00 50.00 52.00 47.00 42.00 26.00 33.00 19.00
1953 32.00 34.00 32.00 37.00 44.00 48.00 54.00 54.00 46.00 41.00 35.00 35.00 32.00
1954 22.00 33.00 31.00 37.00 35.00 46.00 50.00 52.00 46.00 38.00 36.00 31.00 22.00
1955 34.00 28.00 22.00 37.00 41.00 46.00 48.00 52.00 45.00 42.00 13.00 28.00 13.00
1956 23.00 17.00 28.00 36.00 42.00 47.00 51.00 50.00 47.00 35.00 30.00 24.00 17.00
1957 16.00 25.00 37.00 38.00 49.00 51.00 53.00 51.00 47.00 41.00 32.00 35.00 16.00
1958 34.00 36.00 35.00 40.00 42.00 54.00 56.00 55.00 45.00 42.00 29.00 34.00 29.00
1959 18.00 32.00 34.00 38.00 40.00 50.00 52.00 51.00 50.00 38.00 30.00 34.00 18.00
1960 29.00 30.00 29.00 38.00 42.00 47.00 50.00 48.00 46.00 41.00 32.00 31.00 29.00
1961 29.00 37.00 33.00 34.00 43.00 50.00 54.00 55.00 46.00 38.00 30.00 28.00 28.00
1962 20.00 24.00 32.00 a 40.00 40.00 46.00 50.00 52.00 51.00 42.00 35.00 28.00 20.00
1963 17.00 34.00 35.00 36.00 40.00 50.00 52.00 55.00 50.00 40.00 35.00 31.00 17.00
1964 34.00 33.00 35.00 38.00 40.00 50.00 ----- z 52.00 50.00 42.00 34.00 11.00 11.00
1965 34.00 35.00 31.00 38.00 38.00 49.00 53.00 52.00 44.00 44.00 35.00 28.00 28.00
1966 ----- z 34.00 34.00 38.00 43.00 48.00 54.00 53.00 52.00 42.00 38.00 33.00 33.00
1967 34.00 34.00 33.00 37.00 46.00 53.00 54.00 56.00 52.00 44.00 34.00 30.00 30.00
1968 27.00 35.00 36.00 35.00 42.00 51.00 53.00 54.00 50.00 45.00 40.00 10.00 10.00
1969 20.00 33.00 34.00 38.00 42.00 51.00 53.00 51.00 48.00 41.00 33.00 34.00 20.00
1970 30.00 36.00 34.00 38.00 40.00 51.00 54.00 54.00 44.00 35.00 27.00 29.00 27.00
1971 26.00 30.00 26.00 38.00 42.00 47.00 48.00 55.00 47.00 32.00 34.00 28.00 26.00
1972 17.00 24.00 34.00 34.00 42.00 50.00 52.00 53.00 40.00 39.00 ----- z ----- z 17.00
Period of Record Statistics
MEAN 24.61 30.04 32.38 37.29 41.42 48.96 51.83 52.40 46.88 39.68 32.25 28.38 21.52
S.D. 7.12 6.30 3.46 1.55 2.67 2.34 2.26 2.04 3.06 3.41 5.43 6.72 6.49
SKEW 0.00 -1.36 -1.38 -0.50 0.52 0.21 -0.30 -0.17 -0.15 -0.67 -1.75 -1.53 -0.07
MAX 34.00 37.00 37.00 40.00 49.00 54.00 56.00 56.00 52.00 45.00 40.00 35.00 32.00
MIN 11.00 12.00 22.00 34.00 35.00 45.00 48.00 48.00 40.00 32.00 13.00 10.00 10.00
NO YRS 23 24 24 24 24 25 24 25 25 25 24 24 21