BONNEVILLE DAM, at

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(350897)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1937 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 58.00 i 63.00 d 63.00
1938 57.00 55.00 b 67.00 76.00 85.00 f 92.00 f 104.00 87.00 a 95.00 a 80.00 a 60.00 a 59.00 a 104.00
1939 55.00 g 55.00 74.00 82.00 92.00 83.00 99.00 98.00 89.00 77.00 65.00 62.00 a 99.00
1940 50.00 a 58.00 73.00 75.00 86.00 99.00 90.00 98.00 85.00 77.00 62.00 57.00 99.00
1941 52.00 61.00 72.00 79.00 88.00 94.00 107.00 97.00 76.00 69.00 70.00 59.00 107.00
1942 49.00 52.00 70.00 76.00 83.00 95.00 105.00 100.00 93.00 83.00 60.00 55.00 105.00
1943 54.00 59.00 63.00 83.00 81.00 87.00 89.00 86.00 95.00 83.00 63.00 59.00 95.00
1944 56.00 61.00 67.00 76.00 86.00 87.00 99.00 96.00 99.00 75.00 60.00 58.00 99.00
1945 60.00 64.00 60.00 72.00 84.00 90.00 95.00 96.00 88.00 83.00 59.00 57.00 96.00
1946 54.00 59.00 65.00 78.00 81.00 89.00 103.00 97.00 86.00 67.00 61.00 59.00 103.00
1947 61.00 61.00 75.00 81.00 94.00 84.00 88.00 87.00 94.00 69.00 60.00 56.00 94.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z 93.00 88.00 94.00 70.00 55.00 54.00 94.00
1949 42.00 a 55.00 60.00 74.00 85.00 87.00 92.00 91.00 92.00 68.00 66.00 58.00 92.00
1950 52.00 57.00 60.00 70.00 80.00 90.00 88.00 94.00 87.00 70.00 60.00 59.00 94.00
1951 56.00 62.00 61.00 80.00 84.00 90.00 92.00 96.00 94.00 75.00 57.00 57.00 96.00
1952 50.00 58.00 63.00 a 78.00 89.00 82.00 95.00 99.00 92.00 86.00 57.00 50.00 99.00
1953 60.00 59.00 66.00 72.00 89.00 80.00 88.00 101.00 92.00 75.00 65.00 60.00 101.00
1954 58.00 60.00 61.00 74.00 83.00 85.00 80.00 80.00 84.00 68.00 62.00 57.00 85.00
1955 51.00 53.00 58.00 69.00 78.00 94.00 85.00 89.00 100.00 73.00 60.00 62.00 100.00
1956 50.00 48.00 65.00 80.00 a 92.00 81.00 103.00 94.00 89.00 75.00 57.00 59.00 103.00
1957 45.00 58.00 61.00 85.00 82.00 79.00 89.00 88.00 90.00 78.00 58.00 58.00 90.00
1958 60.00 62.00 61.00 72.00 85.00 95.00 100.00 93.00 95.00 82.00 65.00 62.00 100.00
1959 55.00 55.00 62.00 76.00 82.00 85.00 95.00 93.00 84.00 70.00 64.00 61.00 95.00
1960 51.00 54.00 74.00 79.00 75.00 85.00 100.00 97.00 87.00 78.00 62.00 50.00 100.00
1961 60.00 57.00 65.00 75.00 84.00 100.00 104.00 96.00 80.00 75.00 80.00 a 60.00 104.00
1962 57.00 56.00 a 65.00 78.00 67.00 82.00 91.00 88.00 85.00 74.00 64.00 55.00 91.00
1963 55.00 59.00 65.00 68.00 89.00 89.00 83.00 95.00 98.00 74.00 58.00 50.00 98.00
1964 55.00 58.00 72.00 70.00 83.00 87.00 88.00 90.00 80.00 75.00 57.00 59.00 90.00
1965 58.00 61.00 69.00 78.00 76.00 83.00 102.00 101.00 84.00 81.00 64.00 a 56.00 102.00
1966 54.00 c 55.00 70.00 73.00 82.00 90.00 a 89.00 88.00 87.00 78.00 69.00 54.00 90.00
1967 54.00 58.00 58.00 67.00 87.00 88.00 95.00 98.00 89.00 72.00 65.00 55.00 98.00
1968 55.00 66.00 65.00 85.00 80.00 96.00 97.00 95.00 92.00 73.00 63.00 59.00 97.00
1969 57.00 52.00 71.00 72.00 88.00 99.00 90.00 88.00 90.00 74.00 65.00 56.00 99.00
1970 59.00 59.00 64.00 66.00 88.00 96.00 98.00 96.00 83.00 84.00 69.00 55.00 98.00
1971 61.00 64.00 59.00 76.00 88.00 86.00 93.00 95.00 82.00 82.00 59.00 56.00 95.00
1972 57.00 60.00 73.00 78.00 91.00 83.00 97.00 102.00 90.00 74.00 58.00 62.00 102.00
1973 58.00 59.00 67.00 75.00 92.00 96.00 94.00 87.00 93.00 72.00 64.00 55.00 96.00
1974 60.00 55.00 66.00 70.00 80.00 93.00 89.00 92.00 89.00 79.00 63.00 60.00 93.00
1975 58.00 58.00 60.00 71.00 81.00 89.00 93.00 86.00 100.00 84.00 71.00 61.00 100.00
1976 58.00 56.00 63.00 72.00 84.00 89.00 95.00 89.00 87.00 76.00 63.00 57.00 95.00
1977 53.00 64.00 63.00 82.00 73.00 91.00 90.00 107.00 86.00 72.00 64.00 62.00 107.00
1978 47.00 58.00 72.00 73.00 84.00 92.00 101.00 105.00 81.00 77.00 64.00 52.00 105.00
1979 46.00 54.00 71.00 77.00 87.00 91.00 101.00 92.00 90.00 80.00 57.00 59.00 101.00
1980 55.00 d 53.00 61.00 79.00 84.00 77.00 99.00 93.00 87.00 85.00 d 61.00 65.00 99.00
1981 58.00 62.00 a 67.00 82.00 80.00 84.00 95.00 a 105.00 92.00 72.00 65.00 57.00 105.00
1982 60.00 63.00 66.00 80.00 89.00 96.00 86.00 94.00 94.00 72.00 61.00 62.00 96.00
1983 59.00 58.00 63.00 75.00 97.00 84.00 98.00 93.00 81.00 70.00 62.00 52.00 98.00
1984 57.00 57.00 66.00 72.00 83.00 86.00 99.00 96.00 82.00 77.00 59.00 54.00 99.00
1985 48.00 59.00 68.00 81.00 86.00 98.00 100.00 93.00 79.00 74.00 63.00 44.00 100.00
1986 55.00 67.00 a 69.00 78.00 87.00 91.00 87.00 99.00 92.00 80.00 65.00 51.00 99.00
1987 50.00 58.00 65.00 88.00 91.00 96.00 93.00 100.00 100.00 a 86.00 62.00 62.00 100.00
1988 52.00 64.00 70.00 77.00 89.00 90.00 100.00 98.00 98.00 86.00 67.00 58.00 100.00
1989 55.00 54.00 59.00 80.00 81.00 96.00 88.00 86.00 89.00 80.00 63.00 60.00 96.00
1990 64.00 60.00 72.00 79.00 85.00 93.00 101.00 101.00 90.00 71.00 65.00 54.00 101.00
1991 56.00 61.00 69.00 75.00 76.00 84.00 100.00 91.00 91.00 82.00 60.00 55.00 100.00
1992 59.00 61.00 69.00 79.00 91.00 102.00 102.00 98.00 89.00 81.00 59.00 51.00 102.00
1993 53.00 55.00 64.00 66.00 84.00 84.00 81.00 97.00 93.00 86.00 61.00 59.00 97.00
1994 58.00 50.00 74.00 74.00 84.00 86.00 101.00 89.00 87.00 76.00 59.00 58.00 101.00
1995 60.00 62.00 69.00 72.00 85.00 90.00 96.00 91.00 90.00 72.00 63.00 57.00 96.00
1996 58.00 61.00 68.00 81.00 79.00 a 86.00 99.00 97.00 82.00 81.00 59.00 56.00 99.00
1997 58.00 a 60.00 ----- z 75.00 86.00 82.00 98.00 92.00 91.00 71.00 65.00 56.00 98.00
1998 56.00 54.00 68.00 86.00 89.00 86.00 97.00 89.00 99.00 84.00 62.00 58.00 99.00
1999 58.00 57.00 69.00 82.00 91.00 89.00 95.00 94.00 93.00 78.00 67.00 58.00 95.00
2000 53.00 59.00 69.00 78.00 79.00 99.00 92.00 94.00 94.00 74.00 63.00 49.00 99.00
2001 53.00 60.00 74.00 86.00 98.00 93.00 89.00 101.00 89.00 84.00 69.00 57.00 101.00
2002 56.00 68.00 65.00 80.00 83.00 97.00 a 103.00 103.00 89.00 77.00 63.00 53.00 103.00
2003 64.00 60.00 75.00 71.00 85.00 100.00 103.00 97.00 95.00 78.00 63.00 51.00 103.00
2004 59.00 56.00 72.00 86.00 84.00 91.00 102.00 99.00 86.00 80.00 63.00 60.00 102.00
2005 56.00 63.00 74.00 77.00 92.00 87.00 99.00 96.00 87.00 75.00 59.00 56.00 99.00
2006 60.00 55.00 66.00 81.00 89.00 104.00 107.00 96.00 90.00 77.00 69.00 58.00 107.00
2007 60.00 62.00 69.00 76.00 93.00 89.00 104.00 93.00 90.00 71.00 62.00 60.00 104.00
2008 48.00 65.00 64.00 77.00 93.00 100.00 j 96.00 105.00 92.00 83.00 66.00 57.00 105.00
2009 60.00 54.00 56.00 80.00 86.00 88.00 103.00 96.00 93.00 68.00 60.00 49.00 103.00
2010 52.00 58.00 66.00 73.00 77.00 82.00 98.00 97.00 88.00 83.00 68.00 62.00 98.00
2011 56.00 55.00 56.00 68.00 73.00 83.00 88.00 93.00 95.00 72.00 58.00 59.00 95.00
2012 59.00 54.00 63.00 79.00 87.00 83.00 85.00 97.00 89.00 78.00 61.00 59.00 97.00
2013 57.00 56.00 73.00 75.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 75.00
Period of Record Statistics
MEAN 55.50 58.35 66.41 76.57 84.92 89.40 95.37 94.64 89.63 76.68 62.63 56.99 98.67
S.D. 4.38 3.92 4.92 5.01 5.66 6.02 6.39 5.27 5.28 5.20 4.04 3.88 4.36
SKEW -0.73 0.05 -0.09 -0.02 -0.37 0.32 -0.31 -0.07 -0.17 0.10 1.15 -0.74 -0.47
MAX 64.00 68.00 75.00 88.00 98.00 104.00 107.00 107.00 100.00 86.00 80.00 65.00 107.00
MIN 42.00 48.00 56.00 66.00 67.00 77.00 80.00 80.00 76.00 67.00 55.00 44.00 85.00
NO YRS 74 75 74 74 73 72 75 75 75 75 75 76 69