ALTA state,

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(420072)

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
1905 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1906 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 84.00 j 75.00 a 85.00 h ----- z ----- z 85.00
1907 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1908 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1909 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1910 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1911 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1912 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1913 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1914 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1916 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1917 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1918 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1919 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1920 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1921 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1922 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1923 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1934 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1935 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1936 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1937 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1938 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1939 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1940 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1941 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1942 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1943 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1944 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 56.00 t 48.00 56.00
1945 51.00 40.00 a 56.00 a ----- z ----- z ----- z 94.00 81.00 ----- z ----- z 52.00 g 45.00 94.00
1946 55.00 50.00 55.00 64.00 59.00 70.00 e 80.00 79.00 c 71.00 b 52.00 d 54.00 52.00 80.00
1947 48.00 57.00 54.00 55.00 ----- z 73.00 r 79.00 c 75.00 76.00 c 65.00 c 57.00 d 56.00 79.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.00 p 42.00 46.00
1949 49.00 46.00 49.00 55.00 h ----- z ----- z ----- z ----- z ----- z ----- z 61.00 i 50.00 c 61.00
1950 56.00 49.00 49.00 56.00 o ----- z ----- z ----- z ----- z ----- z ----- z 59.00 b 55.00 59.00
1951 52.00 53.00 47.00 49.00 j ----- z ----- z 81.00 i 74.00 70.00 n ----- z 55.00 49.00 81.00
1952 50.00 a 53.00 47.00 ----- z ----- z ----- z 78.00 q 75.00 e ----- z ----- z 51.00 c 59.00 78.00
1953 53.00 47.00 a 55.00 55.00 i ----- z ----- z ----- z ----- z ----- z 67.00 57.00 47.00 67.00
1954 52.00 56.00 45.00 a ----- z ----- z ----- z ----- z ----- z ----- z 64.00 o 57.00 49.00 64.00
1955 42.00 49.00 50.00 50.00 ----- z ----- z ----- z ----- z ----- z ----- z 50.00 48.00 50.00
1956 50.00 43.00 54.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 54.00 a 53.00 a 54.00
1957 47.00 a 52.00 47.00 50.00 ----- z ----- z ----- z ----- z ----- z ----- z 58.00 55.00 58.00
1958 51.00 55.00 45.00 51.00 f ----- z ----- z ----- z ----- z ----- z ----- z 51.00 s 52.00 55.00
1959 48.00 39.00 50.00 60.00 f ----- z ----- z ----- z ----- z ----- z ----- z 40.00 b 50.00 60.00
1960 53.00 38.00 52.00 58.00 p ----- z ----- z ----- z ----- z ----- z ----- z 49.00 r 51.00 58.00
1961 47.00 b 43.00 52.00 52.00 ----- z ----- z ----- z ----- z ----- z ----- z 44.00 r 46.00 a 52.00
1962 51.00 53.00 ----- z 60.00 s ----- z ----- z ----- z ----- z ----- z ----- z ----- z 53.00 60.00
1963 49.00 56.00 48.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 50.00 56.00
1964 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1965 52.00 48.00 48.00 54.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 54.00
1966 48.00 41.00 56.00 54.00 o ----- z ----- z ----- z ----- z ----- z 61.00 o 64.00 ----- z 64.00
1967 50.00 49.00 a 48.00 46.00 ----- z ----- z ----- z 76.00 72.00 63.00 56.00 43.00 b 76.00
1968 52.00 43.00 50.00 51.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 47.00 52.00
1969 44.00 48.00 48.00 61.00 71.00 ----- z ----- z ----- z ----- z ----- z 59.00 52.00 71.00
1970 44.00 49.00 45.00 ----- z ----- z 82.00 q 80.00 79.00 72.00 65.00 51.00 51.00 82.00
1971 49.00 49.00 50.00 52.00 65.00 78.00 79.00 79.00 72.00 66.00 53.00 44.00 79.00
1972 49.00 52.00 58.00 53.00 70.00 72.00 82.00 79.00 68.00 67.00 ----- z 48.00 82.00
1973 53.00 53.00 ----- z ----- z ----- z 76.00 80.00 78.00 a 74.00 65.00 57.00 ----- z 80.00
1974 ----- z 42.00 50.00 57.00 72.00 82.00 80.00 76.00 75.00 66.00 52.00 47.00 82.00
1975 43.00 45.00 53.00 49.00 e 66.00 70.00 81.00 77.00 72.00 59.00 t 62.00 52.00 a 81.00
1976 54.00 51.00 52.00 c ----- z 66.00 e 79.00 83.00 81.00 76.00 69.00 59.00 52.00 83.00
1977 49.00 55.00 53.00 67.00 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 67.00
1978 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1979 ----- z ----- z ----- z ----- z ----- z 79.00 81.00 83.00 78.00 70.00 53.00 54.00 83.00
1980 43.00 45.00 40.00 60.00 66.00 74.00 82.00 79.00 75.00 68.00 62.00 58.00 82.00
1981 57.00 52.00 47.00 65.00 70.00 81.00 81.00 78.00 71.00 63.00 56.00 54.00 81.00
1982 42.00 49.00 41.00 54.00 65.00 75.00 80.00 80.00 72.00 57.00 47.00 42.00 80.00
1983 46.00 43.00 49.00 45.00 58.00 69.00 77.00 80.00 79.00 61.00 56.00 38.00 80.00
1984 46.00 46.00 45.00 53.00 66.00 76.00 78.00 77.00 71.00 61.00 50.00 41.00 78.00
1985 42.00 44.00 46.00 61.00 66.00 75.00 84.00 81.00 73.00 59.00 55.00 47.00 a 84.00
1986 49.00 48.00 56.00 59.00 68.00 73.00 e 75.00 v 79.00 o 69.00 55.00 49.00 44.00 79.00
1987 53.00 52.00 54.00 69.00 65.00 76.00 76.00 74.00 74.00 67.00 54.00 51.00 76.00
1988 50.00 50.00 53.00 63.00 68.00 79.00 80.00 80.00 77.00 66.00 54.00 49.00 80.00
1989 53.00 45.00 55.00 62.00 66.00 76.00 81.00 77.00 71.00 64.00 61.00 49.00 81.00
1990 50.00 45.00 51.00 60.00 62.00 79.00 78.00 81.00 78.00 63.00 58.00 56.00 81.00
1991 46.00 48.00 46.00 57.00 59.00 69.00 79.00 75.00 73.00 66.00 53.00 47.00 79.00
1992 53.00 47.00 50.00 64.00 66.00 74.00 75.00 ----- z 69.00 70.00 53.00 44.00 75.00
1993 42.00 44.00 53.00 53.00 69.00 74.00 75.00 73.00 73.00 68.00 44.00 50.00 75.00
1994 48.00 43.00 60.00 ----- z 72.00 79.00 80.00 83.00 73.00 60.00 47.00 46.00 83.00
1995 45.00 54.00 53.00 51.00 59.00 70.00 80.00 78.00 76.00 65.00 56.00 49.00 80.00
1996 50.00 55.00 52.00 61.00 67.00 75.00 78.00 81.00 75.00 71.00 59.00 48.00 81.00
1997 50.00 45.00 58.00 57.00 71.00 73.00 79.00 77.00 72.00 66.00 55.00 46.00 79.00
1998 40.00 42.00 53.00 60.00 59.00 76.00 83.00 77.00 76.00 60.00 52.00 47.00 83.00
1999 46.00 51.00 54.00 55.00 66.00 74.00 80.00 75.00 69.00 67.00 60.00 43.00 80.00
2000 41.00 54.00 54.00 64.00 70.00 75.00 83.00 84.00 76.00 64.00 43.00 43.00 84.00
2001 48.00 39.00 49.00 59.00 71.00 80.00 84.00 79.00 74.00 ----- z 58.00 38.00 84.00
2002 40.00 46.00 52.00 57.00 75.00 80.00 86.00 77.00 74.00 55.00 51.00 45.00 86.00
2003 48.00 46.00 51.00 55.00 76.00 75.00 82.00 80.00 72.00 70.00 45.00 43.00 82.00
2004 41.00 44.00 65.00 55.00 64.00 73.00 77.00 76.00 75.00 64.00 54.00 ----- z 77.00
2005 43.00 42.00 47.00 56.00 65.00 75.00 83.00 77.00 72.00 65.00 56.00 44.00 83.00
2006 44.00 49.00 48.00 61.00 ----- z 79.00 82.00 76.00 ----- z 65.00 56.00 50.00 82.00
2007 46.00 48.00 ----- z ----- z 69.00 78.00 81.00 79.00 75.00 63.00 55.00 49.00 a 81.00
2008 35.00 48.00 44.00 57.00 67.00 76.00 80.00 d 80.00 i 68.00 e 64.00 e 57.00 46.00 80.00
2009 44.00 42.00 55.00 60.00 70.00 76.00 81.00 81.00 74.00 62.00 62.00 32.00 81.00
2010 47.00 e 37.00 51.00 58.00 61.00 e 75.00 i 81.00 f 78.00 74.00 f 72.00 58.00 47.00 81.00
2011 46.00 43.00 a 46.00 a 50.00 a 62.00 b 73.00 c 78.00 e 80.00 c 71.00 e 66.00 b 50.00 c 46.00 b 80.00
2012 51.00 39.00 a 56.00 b 67.00 d 71.00 e 76.00 c 80.00 a 83.00 72.00 b 64.00 a 56.00 a 44.00 a 83.00
2013 50.00 b 43.00 b 53.00 c 41.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 12.00 z 53.00
Period of Record Statistics
MEAN 47.91 47.26 50.85 57.09 66.62 75.47 80.52 78.36 73.26 64.33 54.44 48.00 80.65
S.D. 4.42 4.99 4.53 5.65 4.46 3.30 3.18 2.65 2.67 4.30 4.98 4.97 2.50
SKEW -0.40 0.02 0.22 0.01 -0.17 -0.16 1.67 0.09 -0.01 -0.81 -0.71 -0.35 -0.17
MAX 57.00 57.00 65.00 69.00 76.00 82.00 94.00 84.00 79.00 72.00 64.00 59.00 86.00
MIN 35.00 37.00 40.00 45.00 58.00 69.00 75.00 73.00 68.00 52.00 40.00 32.00 75.00
NO YRS 64 65 62 45 39 40 42 44 43 43 54 62 23