SEATTLE URBAN SITE, WASHINGTON

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(457458)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 199804
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
1972 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 56.00 56.00
1973 58.00 67.00 63.00 67.00 88.00 85.00 85.00 83.00 87.00 69.00 59.00 56.00 88.00
1974 57.00 55.00 60.00 75.00 69.00 82.00 87.00 88.00 90.00 73.00 61.00 59.00 90.00
1975 57.00 58.00 59.00 67.00 83.00 88.00 86.00 a 82.00 83.00 78.00 66.00 58.00 88.00
1976 60.00 60.00 61.00 85.00 81.00 80.00 84.00 78.00 82.00 69.00 63.00 60.00 85.00
1977 57.00 64.00 59.00 74.00 70.00 82.00 83.00 93.00 74.00 71.00 59.00 57.00 93.00
1978 57.00 60.00 66.00 72.00 81.00 89.00 91.00 93.00 71.00 73.00 60.00 51.00 93.00
1979 52.00 59.00 68.00 71.00 77.00 82.00 90.00 80.00 87.00 75.00 60.00 55.00 90.00
1980 53.00 59.00 61.00 79.00 76.00 74.00 83.00 85.00 80.00 82.00 71.00 65.00 85.00
1981 64.00 64.00 68.00 75.00 78.00 81.00 85.00 94.00 85.00 65.00 68.00 54.00 94.00
1982 55.00 60.00 61.00 77.00 79.00 92.00 81.00 84.00 80.00 68.00 60.00 59.00 92.00
1983 58.00 64.00 66.00 72.00 85.00 78.00 82.00 83.00 77.00 66.00 61.00 52.00 85.00
1984 62.00 60.00 66.00 83.00 81.00 84.00 87.00 83.00 84.00 75.00 60.00 49.00 87.00
1985 52.00 54.00 64.00 69.00 85.00 87.00 91.00 85.00 75.00 66.00 57.00 51.00 91.00
1986 58.00 70.00 71.00 71.00 84.00 90.00 80.00 89.00 90.00 73.00 58.00 54.00 90.00
1987 61.00 66.00 69.00 83.00 83.00 88.00 83.00 86.00 88.00 81.00 62.00 56.00 88.00
1988 57.00 61.00 68.00 71.00 83.00 85.00 92.00 ----- z 91.00 74.00 60.00 57.00 92.00
1989 54.00 53.00 59.00 79.00 79.00 86.00 81.00 80.00 81.00 70.00 62.00 57.00 86.00
1990 55.00 66.00 65.00 76.00 77.00 85.00 88.00 86.00 85.00 66.00 65.00 ----- z 88.00
1991 56.00 65.00 63.00 71.00 72.00 77.00 96.00 85.00 83.00 82.00 62.00 52.00 96.00
1992 59.00 65.00 66.00 76.00 84.00 90.00 87.00 92.00 80.00 74.00 58.00 53.00 92.00
1993 60.00 66.00 66.00 74.00 86.00 79.00 79.00 94.00 84.00 78.00 61.00 60.00 94.00
1994 55.00 62.00 73.00 72.00 78.00 81.00 94.00 86.00 83.00 75.00 54.00 58.00 94.00
1995 60.00 a 60.00 a 74.00 73.00 83.00 93.00 93.00 84.00 84.00 70.00 70.00 60.00 93.00
1996 58.00 62.00 71.00 77.00 72.00 78.00 90.00 94.00 78.00 77.00 62.00 56.00 94.00
1997 56.00 60.00 64.00 72.00 82.00 80.00 90.00 88.00 85.00 71.00 68.00 58.00 90.00
1998 63.00 62.00 68.00 77.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 77.00
Period of Record Statistics
MEAN 57.46 61.62 65.35 74.54 79.84 83.84 86.72 86.46 82.68 72.84 61.88 56.12 90.35
S.D. 3.13 4.08 4.30 4.64 5.07 4.99 4.68 4.79 5.06 5.00 4.11 3.60 3.34
SKEW 0.18 -0.22 0.20 0.53 -0.64 0.05 0.17 0.26 -0.44 0.25 0.64 0.11 -0.22
MAX 64.00 70.00 74.00 85.00 88.00 93.00 96.00 94.00 91.00 82.00 71.00 65.00 96.00
MIN 52.00 53.00 59.00 67.00 69.00 74.00 79.00 78.00 71.00 65.00 54.00 49.00 85.00
NO YRS 26 26 26 26 25 25 25 24 25 25 25 25 23