CHIEF JOSEPH DAM, st

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(451400)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1949 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 75.00 62.00 53.00 75.00
1950 51.00 b 50.00 60.00 76.00 87.00 96.00 k 102.00 k 104.00 i 95.00 i 72.00 c 59.00 g 53.00 k 104.00
1951 48.00 i 54.00 60.00 76.00 90.00 92.00 103.00 102.00 93.00 77.00 49.00 51.00 103.00
1952 48.00 49.00 64.00 85.00 85.00 91.00 104.00 101.00 95.00 84.00 55.00 b 46.00 104.00
1953 53.00 a 60.00 b 65.00 b 73.00 85.00 f 89.00 b 101.00 102.00 94.00 79.00 a 69.00 55.00 102.00
1954 47.00 a 60.00 a 64.00 a 74.00 b 94.00 b 87.00 99.00 b ----- z 85.00 74.00 61.00 46.00 99.00
1955 41.00 47.00 55.00 72.00 81.00 a 100.00 105.00 98.00 b 98.00 73.00 61.00 46.00 a 105.00
1956 44.00 46.00 57.00 83.00 92.00 ----- z 104.00 100.00 88.00 74.00 55.00 a 57.00 104.00
1957 37.00 58.00 63.00 83.00 90.00 95.00 99.00 95.00 95.00 84.00 60.00 50.00 99.00
1958 46.00 56.00 62.00 75.00 100.00 105.00 104.00 105.00 98.00 85.00 62.00 56.00 105.00
1959 50.00 47.00 62.00 75.00 86.00 89.00 106.00 101.00 86.00 75.00 66.00 44.00 106.00
1960 45.00 49.00 75.00 77.00 86.00 96.00 108.00 102.00 95.00 81.00 61.00 45.00 108.00
1961 52.00 59.00 68.00 75.00 86.00 101.00 103.00 108.00 90.00 79.00 61.00 48.00 108.00
1962 50.00 51.00 68.00 80.00 82.00 92.00 101.00 97.00 95.00 74.00 64.00 51.00 101.00
1963 50.00 58.00 68.00 70.00 89.00 98.00 96.00 98.00 98.00 84.00 59.00 48.00 98.00
1964 44.00 51.00 ----- z 71.00 83.00 93.00 100.00 92.00 90.00 75.00 60.00 45.00 100.00
1965 50.00 55.00 65.00 76.00 89.00 93.00 97.00 101.00 85.00 83.00 67.00 48.00 101.00
1966 50.00 48.00 75.00 78.00 89.00 87.00 99.00 103.00 98.00 80.00 60.00 51.00 103.00
1967 54.00 60.00 62.00 70.00 89.00 92.00 99.00 102.00 103.00 72.00 75.00 50.00 103.00
1968 45.00 60.00 65.00 86.00 86.00 95.00 a 104.00 96.00 89.00 74.00 58.00 57.00 104.00
1969 43.00 41.00 64.00 75.00 89.00 96.00 100.00 100.00 94.00 71.00 61.00 47.00 100.00
1970 42.00 49.00 62.00 67.00 90.00 101.00 102.00 101.00 92.00 83.00 56.00 46.00 102.00
1971 48.00 50.00 62.00 75.00 87.00 93.00 99.00 102.00 86.00 78.00 54.00 43.00 102.00
1972 48.00 58.00 67.00 75.00 85.00 90.00 ----- z 102.00 93.00 79.00 54.00 51.00 102.00
1973 43.00 51.00 65.00 80.00 94.00 ----- z 103.00 104.00 96.00 71.00 52.00 ----- z 104.00
1974 54.00 53.00 65.00 73.00 82.00 90.00 g 99.00 98.00 a 95.00 72.00 54.00 51.00 99.00
1975 45.00 43.00 57.00 75.00 78.00 90.00 107.00 97.00 94.00 79.00 72.00 58.00 107.00
1976 45.00 55.00 a 65.00 74.00 86.00 93.00 99.00 93.00 97.00 85.00 62.00 51.00 99.00
1977 44.00 ----- z 65.00 93.00 83.00 99.00 101.00 107.00 89.00 72.00 64.00 55.00 107.00
1978 43.00 47.00 70.00 76.00 85.00 99.00 102.00 103.00 87.00 76.00 64.00 e 50.00 d 103.00
1979 37.00 53.00 71.00 82.00 89.00 100.00 a 108.00 100.00 92.00 81.00 57.00 58.00 108.00
1980 48.00 48.00 64.00 86.00 85.00 86.00 104.00 98.00 91.00 82.00 58.00 c 57.00 104.00
1981 51.00 62.00 69.00 80.00 87.00 90.00 101.00 107.00 97.00 74.00 60.00 52.00 107.00
1982 54.00 56.00 63.00 79.00 89.00 100.00 103.00 99.00 91.00 72.00 59.00 49.00 103.00
1983 52.00 51.00 62.00 79.00 98.00 93.00 94.00 102.00 83.00 73.00 63.00 40.00 102.00
1984 51.00 51.00 66.00 80.00 92.00 92.00 103.00 101.00 92.00 80.00 56.00 38.00 103.00
1985 37.00 49.00 59.00 81.00 91.00 98.00 106.00 97.00 85.00 75.00 62.00 42.00 106.00
1986 46.00 53.00 71.00 81.00 103.00 106.00 100.00 104.00 96.00 77.00 60.00 43.00 106.00
1987 46.00 51.00 71.00 88.00 98.00 104.00 103.00 103.00 103.00 86.00 66.00 54.00 104.00
1988 49.00 62.00 66.00 86.00 94.00 98.00 104.00 99.00 100.00 85.00 67.00 52.00 104.00
1989 57.00 45.00 63.00 79.00 86.00 96.00 100.00 102.00 91.00 81.00 75.00 48.00 102.00
1990 55.00 59.00 74.00 79.00 91.00 94.00 106.00 104.00 96.00 77.00 71.00 54.00 106.00
1991 46.00 63.00 ----- z 82.00 81.00 90.00 101.00 102.00 95.00 85.00 60.00 53.00 102.00
1992 55.00 59.00 74.00 83.00 97.00 108.00 105.00 104.00 92.00 83.00 56.00 41.00 108.00
1993 45.00 46.00 64.00 73.00 99.00 93.00 93.00 96.00 96.00 85.00 63.00 51.00 99.00
1994 46.00 53.00 77.00 85.00 91.00 99.00 110.00 103.00 93.00 80.00 53.00 51.00 110.00
1995 42.00 61.00 70.00 79.00 95.00 96.00 103.00 101.00 99.00 72.00 62.00 55.00 103.00
1996 50.00 52.00 67.00 78.00 82.00 92.00 106.00 105.00 90.00 81.00 55.00 41.00 106.00
1997 47.00 49.00 64.00 73.00 89.00 91.00 98.00 104.00 92.00 70.00 61.00 53.00 104.00
1998 44.00 55.00 70.00 86.00 92.00 95.00 109.00 110.00 103.00 81.00 64.00 53.00 110.00
1999 47.00 55.00 70.00 83.00 93.00 98.00 101.00 102.00 89.00 75.00 58.00 53.00 102.00
2000 45.00 47.00 70.00 78.00 84.00 97.00 104.00 101.00 93.00 73.00 59.00 39.00 104.00
2001 45.00 48.00 67.00 84.00 99.00 96.00 103.00 103.00 93.00 76.00 58.00 49.00 103.00
2002 54.00 64.00 67.00 77.00 85.00 103.00 108.00 105.00 96.00 78.00 58.00 53.00 108.00
2003 48.00 56.00 78.00 76.00 87.00 99.00 106.00 105.00 98.00 85.00 58.00 47.00 106.00
2004 47.00 51.00 71.00 83.00 85.00 103.00 102.00 105.00 86.00 80.00 58.00 47.00 105.00
2005 49.00 59.00 72.00 86.00 95.00 96.00 102.00 102.00 92.00 77.00 53.00 45.00 102.00
2006 54.00 55.00 66.00 82.00 99.00 102.00 110.00 100.00 96.00 74.00 58.00 49.00 110.00
2007 55.00 55.00 72.00 75.00 93.00 97.00 105.00 102.00 93.00 71.00 61.00 59.00 105.00
2008 ----- z 68.00 60.00 77.00 98.00 104.00 100.00 106.00 89.00 82.00 62.00 47.00 106.00
2009 53.00 50.00 64.00 75.00 95.00 94.00 103.00 107.00 97.00 71.00 58.00 42.00 107.00
2010 49.00 57.00 64.00 77.00 82.00 90.00 101.00 99.00 89.00 82.00 62.00 46.00 101.00
2011 50.00 52.00 69.00 67.00 77.00 86.00 98.00 99.00 99.00 a 70.00 60.00 52.00 99.00
2012 51.00 53.00 64.00 82.00 92.00 84.00 104.00 105.00 a 90.00 85.00 60.00 a 55.00 a 105.00
2013 47.00 52.00 74.00 79.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 79.00
Period of Record Statistics
MEAN 47.81 53.41 66.34 78.40 89.29 95.36 102.43 101.51 93.15 77.80 60.46 49.47 104.14
S.D. 4.56 5.55 4.97 5.22 5.78 5.40 3.59 3.55 4.63 4.83 5.13 5.09 3.04
SKEW -0.26 0.24 0.21 0.19 0.23 0.17 -0.11 -0.30 -0.02 0.08 0.71 -0.24 0.01
MAX 57.00 68.00 78.00 93.00 103.00 108.00 110.00 110.00 103.00 86.00 75.00 59.00 110.00
MIN 37.00 41.00 55.00 67.00 77.00 84.00 93.00 92.00 83.00 70.00 49.00 38.00 98.00
NO YRS 62 63 62 63 62 59 61 61 62 64 63 62 50