SEATTLE NAS, :

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(457468)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197005
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
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 32.00 33.00 32.00
1930 14.00 29.00 31.00 a ----- z 37.00 45.00 ----- z 50.00 43.00 36.00 29.00 27.00 14.00
1931 30.00 32.00 31.00 34.00 42.00 ----- z ----- z ----- z 44.00 ----- z ----- z ----- z 30.00
1932 23.00 ----- z 30.00 d 30.00 a 30.00 46.00 48.00 51.00 e 43.00 40.00 b 34.00 d 15.00 15.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.00 ----- z 40.00 34.00 ----- z 34.00
1934 31.00 ----- z ----- z 36.00 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 31.00
1935 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1936 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.00 ----- z 31.00 31.00
1937 ----- z ----- z 33.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.00
1938 ----- z ----- z 31.00 33.00 ----- z 44.00 a ----- z ----- z ----- z ----- z 28.00 25.00 b 25.00
1939 29.00 ----- z ----- z ----- z 39.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 29.00
1940 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1941 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1942 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 32.00 ----- z 32.00
1943 13.00 ----- z ----- z ----- z 39.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 13.00
1944 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1945 ----- z ----- z 30.00 32.00 43.00 45.00 50.00 48.00 44.00 39.00 30.00 26.00 26.00
1946 32.00 32.00 33.00 36.00 41.00 47.00 50.00 50.00 44.00 35.00 30.00 25.00 25.00
1947 18.00 29.00 30.00 37.00 43.00 47.00 48.00 48.00 42.00 42.00 32.00 33.00 18.00
1948 28.00 23.00 29.00 34.00 36.00 50.00 50.00 52.00 38.00 36.00 32.00 24.00 23.00
1949 17.00 a 22.00 32.00 36.00 39.00 45.00 43.00 50.00 44.00 31.00 38.00 25.00 17.00
1950 9.00 10.00 32.00 34.00 38.00 46.00 52.00 50.00 41.00 40.00 31.00 35.00 9.00
1951 18.00 29.00 28.00 32.00 40.00 45.00 52.00 50.00 44.00 35.00 32.00 21.00 18.00
1952 20.00 31.00 32.00 33.00 38.00 44.00 49.00 51.00 47.00 42.00 27.00 32.00 20.00
1953 33.00 33.00 30.00 35.00 41.00 48.00 50.00 52.00 44.00 39.00 35.00 33.00 30.00
1954 22.00 32.00 29.00 34.00 34.00 45.00 48.00 51.00 43.00 36.00 35.00 32.00 22.00
1955 31.00 28.00 20.00 36.00 40.00 46.00 49.00 49.00 43.00 41.00 14.00 27.00 14.00
1956 20.00 16.00 28.00 35.00 42.00 47.00 51.00 51.00 46.00 38.00 30.00 21.00 16.00
1957 13.00 21.00 35.00 37.00 47.00 50.00 52.00 51.00 44.00 40.00 31.00 32.00 13.00
1958 33.00 34.00 32.00 39.00 40.00 53.00 54.00 55.00 46.00 39.00 27.00 36.00 27.00
1959 16.00 33.00 35.00 37.00 37.00 50.00 52.00 49.00 47.00 37.00 27.00 30.00 16.00
1960 27.00 27.00 27.00 37.00 41.00 46.00 50.00 48.00 44.00 39.00 33.00 30.00 27.00
1961 31.00 37.00 32.00 32.00 42.00 49.00 53.00 54.00 43.00 36.00 29.00 27.00 27.00
1962 18.00 20.00 30.00 38.00 39.00 47.00 48.00 51.00 47.00 42.00 35.00 27.00 18.00
1963 17.00 34.00 32.00 33.00 39.00 48.00 50.00 53.00 49.00 40.00 30.00 28.00 17.00
1964 33.00 30.00 33.00 35.00 38.00 49.00 52.00 48.00 46.00 40.00 33.00 10.00 10.00
1965 32.00 32.00 27.00 36.00 35.00 44.00 50.00 47.00 41.00 44.00 32.00 27.00 27.00
1966 30.00 29.00 29.00 35.00 40.00 48.00 51.00 50.00 49.00 41.00 34.00 33.00 29.00
1967 30.00 31.00 28.00 34.00 42.00 51.00 53.00 54.00 49.00 41.00 31.00 25.00 25.00
1968 26.00 31.00 34.00 33.00 40.00 49.00 50.00 52.00 44.00 42.00 35.00 8.00 8.00
1969 15.00 30.00 30.00 37.00 38.00 51.00 51.00 48.00 44.00 35.00 30.00 31.00 15.00
1970 24.00 32.00 31.00 38.00 38.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 24.00
Period of Record Statistics
MEAN 23.65 28.41 30.45 34.93 39.29 47.32 50.23 50.50 44.39 38.86 31.03 26.97 19.62
S.D. 7.37 6.08 2.87 2.13 3.11 2.42 2.21 2.01 2.53 2.90 4.14 6.71 6.51
SKEW -0.25 -1.41 -1.39 -0.19 -0.50 0.46 -1.13 0.35 -0.02 -0.67 -2.16 -1.30 -0.08
MAX 33.00 37.00 35.00 39.00 47.00 53.00 54.00 55.00 49.00 44.00 38.00 36.00 30.00
MIN 9.00 10.00 20.00 30.00 30.00 44.00 43.00 47.00 38.00 31.00 14.00 8.00 8.00
NO YRS 31 27 31 30 31 28 26 28 28 29 31 30 24