LAKE KEECHELUS, WASHINGTON

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(454414)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197708
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 46.00 48.00 55.00 78.00 85.00 89.00 99.00 94.00 83.00 74.00 59.00 47.00 99.00
1932 48.00 63.00 48.00 c 66.00 a 75.00 87.00 85.00 a 91.00 85.00 79.00 58.00 51.00 91.00
1933 47.00 43.00 50.00 61.00 71.00 88.00 95.00 97.00 78.00 76.00 60.00 56.00 97.00
1934 50.00 56.00 64.00 88.00 82.00 83.00 94.00 96.00 91.00 80.00 57.00 49.00 96.00
1935 55.00 50.00 50.00 63.00 73.00 83.00 102.00 94.00 91.00 84.00 54.00 44.00 102.00
1936 44.00 47.00 58.00 70.00 90.00 85.00 85.00 89.00 82.00 80.00 58.00 49.00 90.00
1937 40.00 49.00 55.00 57.00 80.00 91.00 92.00 85.00 89.00 73.00 57.00 48.00 92.00
1938 47.00 45.00 50.00 68.00 80.00 84.00 102.00 92.00 92.00 73.00 46.00 a 50.00 102.00
1939 42.00 44.00 61.00 75.00 87.00 90.00 100.00 94.00 88.00 74.00 58.00 50.00 100.00
1940 43.00 50.00 62.00 67.00 83.00 93.00 93.00 94.00 91.00 70.00 45.00 45.00 94.00
1941 41.00 50.00 66.00 72.00 85.00 86.00 102.00 91.00 75.00 67.00 53.00 48.00 102.00
1942 40.00 44.00 62.00 67.00 73.00 87.00 96.00 92.00 86.00 85.00 48.00 46.00 96.00
1943 47.00 52.00 53.00 64.00 70.00 81.00 84.00 84.00 85.00 82.00 50.00 49.00 85.00
1944 39.00 45.00 55.00 67.00 81.00 80.00 93.00 87.00 91.00 75.00 49.00 46.00 93.00
1945 47.00 50.00 46.00 58.00 79.00 81.00 86.00 93.00 83.00 77.00 55.00 41.00 93.00
1946 49.00 43.00 46.00 71.00 80.00 77.00 93.00 90.00 80.00 64.00 47.00 47.00 93.00
1947 47.00 46.00 61.00 74.00 88.00 76.00 88.00 81.00 84.00 77.00 49.00 44.00 88.00
1948 45.00 52.00 55.00 63.00 81.00 86.00 85.00 85.00 88.00 71.00 49.00 39.00 88.00
1949 43.00 48.00 51.00 63.00 79.00 81.00 85.00 87.00 83.00 63.00 63.00 50.00 87.00
1950 43.00 45.00 49.00 61.00 72.00 83.00 86.00 89.00 92.00 63.00 57.00 49.00 92.00
1951 48.00 52.00 55.00 67.00 82.00 84.00 89.00 88.00 84.00 72.00 52.00 48.00 89.00
1952 41.00 45.00 62.00 67.00 81.00 73.00 91.00 91.00 87.00 79.00 56.00 41.00 91.00
1953 50.00 50.00 58.00 65.00 78.00 72.00 89.00 91.00 87.00 70.00 50.00 46.00 91.00
1954 40.00 45.00 49.00 58.00 73.00 76.00 83.00 80.00 79.00 63.00 60.00 44.00 83.00
1955 45.00 44.00 51.00 60.00 67.00 83.00 90.00 88.00 91.00 65.00 56.00 45.00 91.00
1956 38.00 41.00 55.00 72.00 83.00 73.00 a 95.00 93.00 82.00 73.00 50.00 50.00 95.00
1957 37.00 48.00 53.00 78.00 78.00 85.00 78.00 81.00 88.00 78.00 55.00 48.00 88.00
1958 45.00 51.00 50.00 65.00 85.00 88.00 93.00 96.00 91.00 79.00 55.00 49.00 96.00
1959 47.00 45.00 56.00 65.00 78.00 81.00 90.00 89.00 83.00 70.00 60.00 52.00 90.00
1960 45.00 46.00 64.00 63.00 72.00 77.00 93.00 89.00 83.00 75.00 52.00 42.00 93.00
1961 47.00 46.00 54.00 59.00 80.00 95.00 93.00 92.00 77.00 73.00 56.00 45.00 95.00
1962 47.00 49.00 60.00 75.00 61.00 83.00 85.00 84.00 83.00 70.00 62.00 47.00 85.00
1963 45.00 56.00 59.00 63.00 82.00 85.00 80.00 93.00 92.00 74.00 47.00 43.00 93.00
1964 46.00 50.00 60.00 57.00 75.00 77.00 89.00 86.00 75.00 74.00 50.00 42.00 89.00
1965 52.00 48.00 61.00 70.00 76.00 75.00 95.00 95.00 79.00 73.00 55.00 46.00 95.00
1966 45.00 47.00 59.00 62.00 81.00 82.00 79.00 89.00 88.00 74.00 56.00 46.00 89.00
1967 45.00 49.00 48.00 56.00 76.00 90.00 87.00 94.00 91.00 67.00 57.00 47.00 94.00
1968 48.00 59.00 58.00 73.00 77.00 84.00 93.00 86.00 84.00 69.00 48.00 44.00 93.00
1969 44.00 k 44.00 b 65.00 69.00 ----- z 89.00 88.00 90.00 88.00 65.00 61.00 43.00 90.00
1970 41.00 53.00 h 54.00 53.00 74.00 91.00 b 93.00 89.00 78.00 80.00 59.00 40.00 93.00
1971 52.00 51.00 49.00 64.00 77.00 83.00 96.00 95.00 71.00 77.00 49.00 ----- z 96.00
1972 45.00 b 52.00 57.00 64.00 83.00 78.00 88.00 92.00 86.00 72.00 ----- z 49.00 g 92.00
1973 44.00 c 51.00 56.00 66.00 87.00 91.00 89.00 93.00 92.00 65.00 39.00 40.00 b 93.00
1974 42.00 h 44.00 e 50.00 58.00 63.00 81.00 86.00 92.00 a 86.00 76.00 53.00 47.00 b 92.00
1975 47.00 43.00 47.00 62.00 70.00 84.00 96.00 85.00 b 85.00 ----- z 58.00 53.00 96.00
1976 45.00 b 45.00 50.00 66.00 b 73.00 a 85.00 a 86.00 84.00 88.00 75.00 57.00 a 47.00 88.00
1977 49.00 53.00 48.00 a 85.00 70.00 83.00 88.00 96.00 b ----- z ----- z ----- z ----- z 96.00
Period of Record Statistics
MEAN 45.27 48.35 55.00 66.28 77.74 83.38 90.36 89.91 85.11 73.22 53.89 46.43 92.64
S.D. 3.80 4.45 5.57 7.23 6.36 5.45 5.81 4.31 5.22 5.66 5.21 3.65 4.60
SKEW 0.01 1.03 0.18 0.86 -0.46 -0.15 0.11 -0.48 -0.61 -0.12 -0.52 0.06 0.24
MAX 55.00 63.00 66.00 88.00 90.00 95.00 102.00 97.00 92.00 85.00 63.00 56.00 102.00
MIN 37.00 41.00 46.00 53.00 61.00 72.00 78.00 80.00 71.00 63.00 39.00 39.00 83.00
NO YRS 45 46 47 47 46 47 47 47 46 45 45 44 39