SWAN FALLS POWER HOUSE, IDAHO

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(108928)

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
1935 ----- z ----- z ----- z ----- z ----- z ----- z 111.00 a 108.00 c 98.00 90.00 55.00 48.00 111.00
1936 53.00 84.00 g 71.00 e 92.00 96.00 a 104.00 110.00 c 105.00 b 96.00 b 85.00 a 64.00 a 56.00 110.00
1937 41.00 a 56.00 a 65.00 a 83.00 92.00 103.00 106.00 104.00 100.00 82.00 77.00 57.00 a 106.00
1938 62.00 c 62.00 c 63.00 a 82.00 96.00 d 100.00 a 105.00 b 102.00 a 101.00 a 84.00 a 62.00 58.00 105.00
1939 51.00 57.00 75.00 93.00 95.00 105.00 109.00 104.00 96.00 82.00 68.00 69.00 109.00
1940 53.00 68.00 76.00 83.00 94.00 110.00 106.00 108.00 100.00 82.00 63.00 56.00 110.00
1941 52.00 60.00 a 76.00 82.00 97.00 100.00 107.00 a 102.00 91.00 80.00 73.00 64.00 107.00
1942 47.00 56.00 71.00 a 87.00 93.00 94.00 107.00 a 106.00 100.00 89.00 67.00 53.00 107.00
1943 59.00 60.00 80.00 85.00 86.00 a 96.00 107.00 a 104.00 100.00 91.00 61.00 60.00 107.00
1944 51.00 56.00 70.00 76.00 92.00 99.00 106.00 104.00 103.00 86.00 69.00 51.00 a 106.00
1945 53.00 c 56.00 67.00 a 82.00 91.00 103.00 104.00 104.00 104.00 89.00 68.00 66.00 104.00
1946 60.00 62.00 73.00 95.00 a 89.00 96.00 109.00 103.00 99.00 92.00 66.00 61.00 109.00
1947 55.00 65.00 76.00 84.00 98.00 93.00 109.00 105.00 101.00 89.00 76.00 53.00 109.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 102.00 100.00 86.00 67.00 55.00 b 102.00
1949 42.00 57.00 68.00 c 88.00 a 94.00 a 103.00 109.00 108.00 96.00 79.00 76.00 60.00 109.00
1950 53.00 72.00 74.00 80.00 88.00 a 108.00 102.00 104.00 108.00 88.00 67.00 55.00 108.00
1951 60.00 65.00 68.00 82.00 90.00 95.00 108.00 107.00 99.00 84.00 67.00 56.00 108.00
1952 48.00 58.00 66.00 87.00 91.00 98.00 103.00 103.00 100.00 89.00 62.00 52.00 103.00
1953 67.00 70.00 75.00 87.00 86.00 93.00 108.00 105.00 a 99.00 90.00 73.00 a 52.00 108.00
1954 61.00 65.00 72.00 84.00 99.00 101.00 106.00 a 102.00 99.00 b 85.00 69.00 b 64.00 106.00
1955 50.00 55.00 66.00 79.00 b 91.00 b 104.00 a 110.00 104.00 d 106.00 b 88.00 b 70.00 66.00 110.00
1956 58.00 63.00 80.00 g 86.00 94.00 b 103.00 110.00 104.00 97.00 86.00 65.00 62.00 c 110.00
1957 48.00 63.00 67.00 a 82.00 a 90.00 103.00 a 109.00 104.00 98.00 90.00 62.00 61.00 109.00
1958 55.00 69.00 66.00 78.00 101.00 100.00 106.00 104.00 97.00 88.00 70.00 52.00 106.00
1959 63.00 64.00 71.00 88.00 94.00 106.00 108.00 104.00 98.00 81.00 66.00 53.00 108.00
1960 44.00 59.00 80.00 87.00 93.00 103.00 112.00 105.00 97.00 87.00 68.00 54.00 112.00
1961 58.00 65.00 73.00 80.00 95.00 109.00 107.00 111.00 94.00 86.00 a 66.00 58.00 111.00
1962 60.00 56.00 74.00 90.00 87.00 105.00 106.00 102.00 95.00 83.00 70.00 62.00 106.00
1963 51.00 68.00 75.00 83.00 94.00 96.00 105.00 106.00 99.00 90.00 65.00 48.00 106.00
1964 60.00 53.00 74.00 82.00 95.00 101.00 105.00 105.00 91.00 85.00 65.00 69.00 105.00
1965 58.00 64.00 75.00 82.00 91.00 99.00 104.00 104.00 91.00 87.00 78.00 59.00 104.00
1966 61.00 56.00 85.00 86.00 101.00 99.00 105.00 109.00 100.00 82.00 72.00 54.00 109.00
1967 63.00 64.00 69.00 68.00 98.00 100.00 112.00 106.00 105.00 79.00 70.00 55.00 112.00
1968 52.00 66.00 78.00 89.00 90.00 109.00 107.00 99.00 96.00 84.00 64.00 58.00 109.00
1969 56.00 53.00 79.00 86.00 96.00 105.00 104.00 108.00 98.00 80.00 70.00 58.00 108.00
1970 63.00 63.00 65.00 82.00 93.00 105.00 105.00 g 105.00 96.00 86.00 71.00 55.00 105.00
1971 63.00 72.00 72.00 80.00 89.00 102.00 105.00 107.00 97.00 84.00 65.00 57.00 107.00
1972 56.00 66.00 78.00 80.00 99.00 99.00 104.00 107.00 94.00 81.00 63.00 60.00 107.00
1973 54.00 64.00 69.00 80.00 96.00 102.00 108.00 103.00 98.00 82.00 68.00 59.00 108.00
1974 62.00 64.00 a 68.00 83.00 91.00 108.00 105.00 104.00 95.00 d 85.00 64.00 f 58.00 108.00
1975 56.00 58.00 69.00 72.00 93.00 96.00 106.00 102.00 97.00 88.00 69.00 64.00 106.00
1976 56.00 68.00 73.00 76.00 94.00 103.00 103.00 99.00 103.00 82.00 69.00 51.00 103.00
1977 43.00 65.00 72.00 96.00 99.00 105.00 107.00 107.00 97.00 85.00 67.00 62.00 107.00
1978 56.00 59.00 84.00 76.00 88.00 96.00 107.00 106.00 100.00 84.00 72.00 65.00 107.00
1979 42.00 56.00 72.00 80.00 96.00 104.00 106.00 104.00 98.00 89.00 59.00 56.00 j 106.00
1980 66.00 67.00 67.00 89.00 96.00 95.00 106.00 103.00 98.00 87.00 78.00 61.00 106.00
1981 55.00 71.00 71.00 84.00 90.00 104.00 108.00 104.00 100.00 75.00 69.00 66.00 108.00
1982 52.00 63.00 67.00 80.00 90.00 100.00 102.00 101.00 ----- z 79.00 59.00 58.00 102.00
1983 55.00 65.00 73.00 78.00 100.00 96.00 106.00 111.00 96.00 87.00 73.00 53.00 111.00
1984 52.00 55.00 67.00 86.00 96.00 105.00 111.00 106.00 102.00 87.00 76.00 49.00 111.00
1985 45.00 57.00 67.00 91.00 93.00 105.00 i 108.00 103.00 87.00 80.00 69.00 51.00 108.00
1986 54.00 74.00 79.00 86.00 103.00 105.00 105.00 106.00 96.00 80.00 65.00 c 50.00 106.00
1987 59.00 59.00 74.00 ----- z 98.00 105.00 106.00 106.00 102.00 90.00 66.00 65.00 106.00
1988 58.00 70.00 80.00 88.00 98.00 109.00 111.00 105.00 99.00 91.00 76.00 51.00 111.00
1989 52.00 59.00 75.00 89.00 93.00 101.00 110.00 105.00 100.00 88.00 70.00 54.00 110.00
1990 62.00 63.00 77.00 90.00 93.00 106.00 110.00 115.00 103.00 92.00 70.00 55.00 115.00
1991 50.00 65.00 77.00 77.00 83.00 98.00 107.00 107.00 99.00 90.00 59.00 55.00 107.00
1992 63.00 71.00 77.00 95.00 96.00 103.00 110.00 111.00 96.00 98.00 61.00 53.00 111.00
1993 49.00 58.00 70.00 74.00 95.00 101.00 102.00 102.00 100.00 89.00 71.00 59.00 102.00
1994 53.00 63.00 77.00 95.00 95.00 105.00 108.00 108.00 100.00 81.00 66.00 50.00 108.00
1995 56.00 71.00 72.00 80.00 91.00 100.00 107.00 105.00 102.00 82.00 l 69.00 64.00 107.00
1996 55.00 63.00 70.00 87.00 88.00 100.00 109.00 108.00 99.00 90.00 69.00 60.00 109.00
1997 57.00 64.00 ----- z 80.00 92.00 91.00 102.00 104.00 98.00 a 93.00 66.00 52.00 104.00
1998 59.00 63.00 71.00 85.00 87.00 ----- z ----- z 110.00 103.00 83.00 67.00 60.00 110.00
1999 57.00 65.00 72.00 82.00 93.00 b 100.00 103.00 102.00 95.00 84.00 a 75.00 56.00 103.00
2000 60.00 64.00 71.00 87.00 90.00 101.00 107.00 107.00 103.00 ----- z 79.00 52.00 107.00
2001 45.00 57.00 75.00 88.00 100.00 102.00 107.00 104.00 96.00 91.00 70.00 54.00 107.00
2002 55.00 57.00 71.00 81.00 93.00 106.00 a 113.00 100.00 d 97.00 80.00 a 65.00 57.00 113.00
2003 60.00 60.00 76.00 82.00 104.00 102.00 109.00 104.00 99.00 89.00 68.00 61.00 109.00
2004 50.00 60.00 83.00 87.00 92.00 98.00 104.00 105.00 a 95.00 90.00 57.00 a 58.00 105.00
2005 52.00 60.00 76.00 78.00 92.00 100.00 107.00 106.00 96.00 88.00 69.00 54.00 107.00
2006 54.00 59.00 66.00 82.00 95.00 104.00 111.00 103.00 99.00 82.00 74.00 58.00 111.00
2007 53.00 62.00 ----- z 85.00 90.00 99.00 c 109.00 102.00 a 104.00 82.00 61.00 58.00 109.00
2008 53.00 57.00 62.00 83.00 95.00 108.00 b 102.00 105.00 93.00 89.00 74.00 59.00 108.00
2009 54.00 61.00 a 71.00 89.00 b 98.00 a 94.00 105.00 103.00 98.00 75.00 a 67.00 49.00 105.00
2010 52.00 59.00 68.00 82.00 a 83.00 a 103.00 103.00 a 103.00 j 92.00 g 91.00 69.00 52.00 103.00
2011 59.00 a 58.00 c 67.00 c 73.00 b 79.00 a 96.00 a 104.00 a 100.00 a 99.00 a 92.00 61.00 a 59.00 a 104.00
2012 56.00 c 61.00 c 71.00 a 93.00 c 90.00 a 98.00 107.00 105.00 c 97.00 84.00 a 72.00 65.00 a 107.00
2013 54.00 60.00 72.00 b ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 72.00
Period of Record Statistics
MEAN 54.83 62.09 72.32 83.85 93.24 101.32 106.83 104.87 98.39 85.80 67.97 57.19 107.65
S.D. 5.72 4.96 4.90 5.58 4.58 4.31 2.67 2.81 3.53 4.40 5.09 5.08 2.54
SKEW -0.35 0.34 0.32 -0.08 -0.29 -0.18 0.07 0.74 -0.19 -0.14 -0.06 0.30 0.16
MAX 67.00 74.00 85.00 96.00 104.00 110.00 113.00 115.00 108.00 98.00 79.00 69.00 115.00
MIN 41.00 53.00 62.00 68.00 79.00 91.00 102.00 99.00 87.00 75.00 55.00 48.00 102.00
NO YRS 77 76 74 75 76 74 75 77 76 76 77 77 57