WINTHROP 1 WSW, WASHINGTON

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(459376)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1931 40.00 k 45.00 f 61.00 g 79.00 n 92.00 b 97.00 c 100.00 97.00 88.00 i 79.00 i 58.00 41.00 e 100.00
1932 45.00 d 51.00 b 66.00 h 77.00 79.00 g 96.00 a 94.00 97.00 89.00 d 67.00 h 54.00 a 52.00 b 97.00
1933 43.00 e 48.00 57.00 a 80.00 b 76.00 f 96.00 c 101.00 100.00 i 84.00 i 78.00 d 63.00 e 40.00 f 101.00
1934 43.00 48.00 k 65.00 f 89.00 95.00 93.00 104.00 b 97.00 b 76.00 f 79.00 57.00 41.00 104.00
1935 42.00 a 43.00 55.00 75.00 84.00 87.00 f 100.00 f 95.00 92.00 81.00 52.00 37.00 100.00
1936 38.00 43.00 55.00 86.00 92.00 93.00 101.00 97.00 84.00 78.00 53.00 41.00 101.00
1937 26.00 44.00 59.00 71.00 87.00 93.00 98.00 93.00 88.00 79.00 60.00 38.00 98.00
1938 ----- z 42.00 q ----- z ----- z 89.00 99.00 101.00 95.00 97.00 77.00 55.00 41.00 a 101.00
1939 43.00 46.00 65.00 e 81.00 b 91.00 96.00 106.00 99.00 91.00 77.00 58.00 49.00 a 106.00
1940 43.00 50.00 67.00 73.00 87.00 95.00 98.00 98.00 95.00 72.00 52.00 47.00 98.00
1941 38.00 45.00 70.00 78.00 88.00 88.00 103.00 96.00 82.00 71.00 60.00 49.00 103.00
1942 43.00 49.00 65.00 80.00 78.00 93.00 99.00 100.00 92.00 80.00 52.00 41.00 100.00
1943 47.00 46.00 53.00 84.00 81.00 d 90.00 94.00 91.00 h 93.00 85.00 51.00 49.00 94.00
1944 45.00 a 48.00 66.00 77.00 85.00 88.00 97.00 91.00 96.00 81.00 52.00 38.00 97.00
1945 46.00 d 49.00 64.00 74.00 i 87.00 91.00 96.00 97.00 90.00 85.00 a 57.00 40.00 a 97.00
1946 41.00 46.00 62.00 f 83.00 86.00 88.00 96.00 95.00 86.00 70.00 51.00 a 40.00 96.00
1947 41.00 56.00 71.00 80.00 b 93.00 89.00 96.00 ----- z 88.00 80.00 56.00 46.00 96.00
1948 45.00 52.00 66.00 71.00 86.00 a 95.00 a 91.00 a 88.00 a 89.00 a 73.00 b 53.00 38.00 95.00
1949 38.00 47.00 59.00 a 81.00 93.00 93.00 98.00 a 102.00 95.00 71.00 66.00 a 45.00 102.00
1950 38.00 48.00 54.00 72.00 79.00 90.00 a 97.00 a 97.00 a 96.00 b 65.00 51.00 45.00 a 97.00
1951 42.00 a 45.00 57.00 75.00 84.00 88.00 96.00 a 96.00 89.00 77.00 a 57.00 49.00 96.00
1952 38.00 43.00 61.00 82.00 83.00 86.00 100.00 98.00 90.00 84.00 57.00 42.00 100.00
1953 47.00 53.00 a 60.00 72.00 81.00 80.00 96.00 95.00 90.00 75.00 56.00 49.00 96.00
1954 42.00 51.00 a 57.00 b 73.00 89.00 a 84.00 a 92.00 93.00 83.00 68.00 a 61.00 39.00 93.00
1955 35.00 48.00 50.00 68.00 75.00 95.00 96.00 b 94.00 95.00 72.00 54.00 a 40.00 a 96.00
1956 41.00 43.00 50.00 a 80.00 90.00 84.00 99.00 98.00 87.00 a 78.00 50.00 47.00 99.00
1957 32.00 49.00 57.00 l 82.00 89.00 90.00 96.00 89.00 90.00 79.00 62.00 40.00 96.00
1958 42.00 51.00 58.00 76.00 94.00 100.00 98.00 99.00 92.00 87.00 60.00 51.00 100.00
1959 47.00 53.00 54.00 72.00 84.00 91.00 104.00 94.00 b 86.00 79.00 60.00 40.00 104.00
1960 40.00 45.00 66.00 80.00 80.00 89.00 104.00 100.00 90.00 79.00 57.00 36.00 104.00
1961 45.00 50.00 66.00 73.00 84.00 98.00 99.00 105.00 86.00 81.00 52.00 41.00 105.00
1962 46.00 47.00 67.00 79.00 75.00 89.00 99.00 94.00 90.00 76.00 56.00 44.00 99.00
1963 45.00 56.00 64.00 69.00 a 86.00 96.00 90.00 98.00 94.00 78.00 53.00 39.00 98.00
1964 35.00 45.00 63.00 69.00 81.00 86.00 ----- z 92.00 t 87.00 81.00 54.00 36.00 92.00
1965 42.00 50.00 61.00 74.00 86.00 90.00 100.00 101.00 82.00 77.00 62.00 41.00 101.00
1966 39.00 49.00 67.00 76.00 91.00 88.00 90.00 i 101.00 h 92.00 75.00 58.00 45.00 101.00
1967 47.00 54.00 57.00 67.00 84.00 94.00 95.00 104.00 96.00 73.00 57.00 52.00 104.00
1968 43.00 54.00 ----- z 82.00 82.00 b 92.00 b 101.00 98.00 89.00 81.00 52.00 38.00 b 101.00
1969 27.00 a 43.00 61.00 73.00 89.00 97.00 95.00 a 97.00 93.00 d 68.00 b 60.00 b 40.00 a 97.00
1970 38.00 45.00 ----- z 65.00 87.00 95.00 98.00 a 101.00 87.00 84.00 61.00 37.00 c 101.00
1971 50.00 47.00 52.00 a 73.00 85.00 ----- z 102.00 c 103.00 a 80.00 d 78.00 c 48.00 a 34.00 c 103.00
1972 42.00 49.00 c 61.00 70.00 87.00 ----- z 93.00 d 100.00 a 89.00 a 76.00 d 48.00 a ----- z 100.00
1973 41.00 a 49.00 61.00 ----- z ----- z ----- z 99.00 99.00 93.00 69.00 a 51.00 42.00 99.00
1974 43.00 a 45.00 57.00 a ----- z 76.00 96.00 98.00 98.00 92.00 76.00 ----- z 43.00 98.00
1975 43.00 43.00 53.00 70.00 85.00 87.00 102.00 91.00 89.00 79.00 56.00 47.00 102.00
1976 43.00 a 45.00 57.00 75.00 81.00 90.00 96.00 91.00 92.00 81.00 57.00 39.00 c 96.00
1977 49.00 a 59.00 61.00 89.00 82.00 96.00 97.00 102.00 85.00 70.00 52.00 a 41.00 a 102.00
1978 41.00 46.00 67.00 71.00 80.00 95.00 100.00 99.00 82.00 75.00 54.00 a 42.00 100.00
1979 36.00 49.00 70.00 b 80.00 85.00 94.00 104.00 95.00 g 91.00 85.00 a 52.00 a 52.00 104.00
1980 36.00 45.00 59.00 81.00 82.00 a 84.00 99.00 94.00 88.00 83.00 55.00 47.00 99.00
1981 47.00 52.00 66.00 81.00 81.00 89.00 96.00 101.00 96.00 72.00 60.00 42.00 101.00
1982 46.00 48.00 59.00 74.00 86.00 ----- z 99.00 95.00 89.00 75.00 55.00 42.00 99.00
1983 45.00 47.00 60.00 76.00 96.00 89.00 94.00 97.00 81.00 71.00 57.00 36.00 97.00
1984 50.00 45.00 62.00 75.00 88.00 87.00 101.00 96.00 87.00 78.00 48.00 32.00 101.00
1985 36.00 51.00 62.00 75.00 87.00 93.00 102.00 91.00 83.00 71.00 55.00 36.00 102.00
1986 45.00 52.00 70.00 74.00 100.00 100.00 93.00 98.00 91.00 78.00 55.00 40.00 100.00
1987 43.00 50.00 71.00 87.00 91.00 98.00 97.00 97.00 96.00 85.00 65.00 41.00 98.00
1988 43.00 57.00 64.00 83.00 87.00 90.00 99.00 97.00 100.00 86.00 59.00 43.00 100.00
1989 57.00 44.00 55.00 77.00 82.00 90.00 95.00 95.00 89.00 78.00 68.00 40.00 95.00
1990 46.00 53.00 71.00 75.00 83.00 87.00 ----- z 97.00 91.00 78.00 67.00 37.00 97.00
1991 46.00 62.00 67.00 78.00 76.00 85.00 96.00 96.00 89.00 84.00 51.00 42.00 96.00
1992 42.00 51.00 75.00 78.00 92.00 100.00 99.00 99.00 85.00 84.00 57.00 46.00 100.00
1993 41.00 48.00 57.00 67.00 96.00 85.00 85.00 89.00 92.00 83.00 56.00 43.00 96.00
1994 46.00 45.00 77.00 81.00 88.00 91.00 102.00 ----- z 91.00 73.00 42.00 40.00 102.00
1995 41.00 52.00 65.00 72.00 88.00 89.00 94.00 94.00 94.00 67.00 54.00 47.00 94.00
1996 40.00 45.00 61.00 77.00 78.00 85.00 97.00 99.00 89.00 77.00 54.00 35.00 99.00
1997 47.00 51.00 57.00 68.00 88.00 85.00 91.00 97.00 88.00 71.00 60.00 42.00 97.00
1998 45.00 49.00 63.00 78.00 87.00 90.00 103.00 100.00 97.00 79.00 57.00 41.00 103.00
1999 46.00 47.00 60.00 79.00 89.00 92.00 96.00 98.00 88.00 72.00 55.00 54.00 98.00
2000 37.00 46.00 66.00 73.00 78.00 90.00 98.00 98.00 89.00 72.00 52.00 40.00 98.00
2001 43.00 48.00 65.00 79.00 92.00 89.00 99.00 98.00 90.00 76.00 55.00 39.00 99.00
2002 44.00 54.00 59.00 78.00 77.00 95.00 100.00 99.00 90.00 79.00 55.00 39.00 100.00
2003 43.00 48.00 71.00 71.00 86.00 91.00 100.00 100.00 93.00 84.00 52.00 39.00 100.00
2004 42.00 48.00 70.00 79.00 81.00 97.00 95.00 ----- z 90.00 80.00 55.00 47.00 97.00
2005 46.00 58.00 69.00 83.00 90.00 94.00 94.00 96.00 86.00 76.00 ----- z 39.00 96.00
2006 42.00 49.00 61.00 a 76.00 95.00 97.00 a 95.00 k ----- z ----- z ----- z ----- z ----- z 97.00
Period of Record Statistics
MEAN 42.31 48.79 62.15 76.45 85.92 91.48 97.79 96.90 89.81 77.19 55.71 42.10 99.42
S.D. 4.82 4.10 5.98 5.29 5.45 4.51 3.74 3.46 4.18 5.08 4.60 4.71 2.65
SKEW -0.70 0.84 0.12 0.15 0.06 -0.06 -0.46 -0.37 -0.13 -0.21 0.25 0.54 0.13
MAX 57.00 62.00 77.00 89.00 100.00 100.00 106.00 105.00 100.00 87.00 68.00 54.00 105.00
MIN 26.00 43.00 50.00 65.00 75.00 80.00 85.00 88.00 80.00 65.00 42.00 32.00 94.00
NO YRS 74 73 68 71 73 71 71 67 72 73 73 73 45