PETRIFIED FOREST NP,

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(026468)

File last updated on Apr 3, 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
1931 59.00 57.00 73.00 a 78.00 85.00 a 95.00 98.00 94.00 87.00 81.00 72.00 50.00 98.00
1932 55.00 67.00 73.00 82.00 88.00 97.00 98.00 96.00 93.00 81.00 68.00 66.00 98.00
1933 45.00 63.00 73.00 76.00 91.00 99.00 100.00 99.00 95.00 79.00 73.00 63.00 100.00
1934 65.00 69.00 83.00 85.00 91.00 95.00 100.00 99.00 92.00 90.00 78.00 58.00 100.00
1935 65.00 73.00 71.00 78.00 83.00 96.00 99.00 94.00 90.00 84.00 70.00 59.00 99.00
1936 64.00 65.00 69.00 83.00 88.00 99.00 100.00 97.00 93.00 84.00 70.00 63.00 100.00
1937 47.00 64.00 66.00 85.00 90.00 99.00 99.00 99.00 95.00 85.00 75.00 66.00 99.00
1938 65.00 65.00 72.00 84.00 90.00 96.00 99.00 100.00 s 90.00 k 86.00 69.00 71.00 100.00
1939 62.00 a 65.00 74.00 82.00 90.00 102.00 100.00 99.00 a 92.00 85.00 76.00 71.00 102.00
1940 65.00 72.00 77.00 80.00 89.00 100.00 101.00 99.00 89.00 80.00 73.00 a 63.00 101.00
1941 60.00 71.00 68.00 72.00 89.00 94.00 95.00 94.00 89.00 81.00 75.00 65.00 95.00
1942 64.00 64.00 69.00 79.00 87.00 99.00 103.00 93.00 93.00 83.00 74.00 67.00 103.00
1943 66.00 70.00 88.00 90.00 92.00 96.00 99.00 94.00 91.00 89.00 72.00 60.00 99.00
1944 57.00 65.00 70.00 75.00 90.00 95.00 99.00 98.00 94.00 a 84.00 73.00 60.00 99.00
1945 60.00 67.00 72.00 85.00 84.00 94.00 98.00 103.00 98.00 81.00 72.00 61.00 103.00
1946 62.00 68.00 81.00 84.00 87.00 98.00 98.00 98.00 91.00 79.00 73.00 71.00 98.00
1947 67.00 77.00 75.00 80.00 93.00 94.00 98.00 94.00 94.00 87.00 77.00 57.00 98.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z 98.00 97.00 98.00 82.00 72.00 65.00 98.00
1949 56.00 66.00 75.00 87.00 91.00 96.00 99.00 96.00 94.00 a 83.00 c 72.00 a 66.00 99.00
1950 70.00 68.00 a 73.00 85.00 91.00 100.00 99.00 d 97.00 99.00 88.00 75.00 66.00 100.00
1951 68.00 70.00 71.00 80.00 98.00 d 99.00 a 100.00 98.00 92.00 a 83.00 67.00 64.00 100.00
1952 65.00 64.00 69.00 77.00 87.00 96.00 99.00 98.00 95.00 84.00 a 74.00 52.00 99.00
1953 65.00 67.00 78.00 a 80.00 88.00 98.00 100.00 97.00 92.00 f 85.00 c 76.00 62.00 100.00
1954 66.00 f 70.00 74.00 83.00 87.00 104.00 a 98.00 97.00 92.00 83.00 74.00 65.00 104.00
1955 57.00 67.00 71.00 79.00 87.00 a 97.00 97.00 92.00 96.00 87.00 b 72.00 68.00 97.00
1956 68.00 67.00 78.00 79.00 95.00 99.00 102.00 95.00 94.00 87.00 68.00 63.00 102.00
1957 61.00 74.00 74.00 77.00 87.00 a 99.00 101.00 96.00 e 93.00 a 85.00 63.00 61.00 a 101.00
1958 60.00 71.00 68.00 81.00 95.00 99.00 102.00 97.00 95.00 81.00 74.00 72.00 a 102.00
1959 67.00 63.00 70.00 l 86.00 92.00 a 98.00 99.00 95.00 93.00 84.00 72.00 62.00 99.00
1960 52.00 63.00 76.00 84.00 90.00 100.00 100.00 a 99.00 93.00 82.00 72.00 a 63.00 b 100.00
1961 56.00 72.00 73.00 83.00 a 87.00 a 102.00 99.00 98.00 a 87.00 a 81.00 65.00 64.00 102.00
1962 55.00 69.00 76.00 86.00 87.00 96.00 96.00 a 101.00 94.00 84.00 74.00 61.00 101.00
1963 65.00 73.00 75.00 82.00 89.00 98.00 101.00 94.00 89.00 87.00 71.00 a 60.00 101.00
1964 63.00 62.00 74.00 80.00 a 90.00 96.00 100.00 95.00 89.00 86.00 74.00 62.00 100.00
1965 65.00 67.00 73.00 85.00 85.00 95.00 97.00 98.00 88.00 85.00 73.00 61.00 a 98.00
1966 61.00 63.00 76.00 82.00 88.00 96.00 101.00 96.00 89.00 80.00 73.00 66.00 101.00
1967 64.00 69.00 76.00 77.00 92.00 95.00 100.00 93.00 91.00 84.00 75.00 57.00 100.00
1968 54.00 65.00 75.00 75.00 90.00 100.00 100.00 93.00 93.00 84.00 67.00 63.00 100.00
1969 63.00 60.00 78.00 84.00 92.00 97.00 101.00 100.00 91.00 82.00 67.00 66.00 101.00
1970 65.00 67.00 72.00 74.00 90.00 104.00 100.00 98.00 92.00 79.00 71.00 62.00 104.00
1971 71.00 67.00 81.00 92.00 86.00 100.00 103.00 95.00 94.00 a 80.00 72.00 68.00 103.00
1972 66.00 72.00 79.00 85.00 88.00 97.00 101.00 98.00 88.00 90.00 65.00 65.00 101.00
1973 61.00 62.00 65.00 78.00 86.00 101.00 101.00 98.00 92.00 85.00 80.00 67.00 101.00
1974 59.00 70.00 78.00 81.00 96.00 101.00 97.00 94.00 94.00 83.00 66.00 62.00 101.00
1975 66.00 69.00 72.00 77.00 86.00 b 96.00 97.00 98.00 91.00 85.00 76.00 66.00 98.00
1976 65.00 69.00 76.00 79.00 88.00 98.00 100.00 93.00 d 90.00 80.00 72.00 60.00 100.00
1977 54.00 73.00 73.00 86.00 93.00 99.00 99.00 a 99.00 96.00 a 87.00 76.00 69.00 a 99.00
1978 63.00 65.00 77.00 80.00 89.00 a 97.00 99.00 97.00 93.00 86.00 72.00 57.00 99.00
1979 56.00 73.00 70.00 79.00 85.00 99.00 100.00 99.00 95.00 88.00 70.00 65.00 100.00
1980 60.00 70.00 69.00 83.00 90.00 99.00 99.00 99.00 93.00 88.00 81.00 69.00 99.00
1981 63.00 73.00 72.00 86.00 90.00 101.00 100.00 100.00 88.00 81.00 a 75.00 68.00 101.00
1982 62.00 a 71.00 69.00 80.00 89.00 98.00 98.00 94.00 95.00 80.00 70.00 65.00 98.00
1983 62.00 65.00 75.00 79.00 92.00 94.00 100.00 93.00 94.00 82.00 73.00 64.00 100.00
1984 57.00 65.00 75.00 80.00 97.00 97.00 98.00 94.00 91.00 76.00 81.00 56.00 98.00
1985 60.00 68.00 73.00 81.00 88.00 98.00 101.00 98.00 94.00 83.00 73.00 60.00 101.00
1986 73.00 74.00 80.00 82.00 91.00 96.00 97.00 97.00 92.00 76.00 67.00 61.00 97.00
1987 61.00 65.00 69.00 84.00 85.00 98.00 98.00 94.00 90.00 88.00 71.00 64.00 98.00
1988 64.00 69.00 79.00 81.00 89.00 100.00 99.00 97.00 94.00 86.00 79.00 64.00 100.00
1989 60.00 74.00 83.00 89.00 94.00 102.00 103.00 95.00 90.00 84.00 71.00 66.00 103.00
1990 67.00 71.00 78.00 84.00 89.00 104.00 100.00 95.00 96.00 80.00 72.00 64.00 104.00
1991 54.00 71.00 72.00 83.00 87.00 96.00 99.00 97.00 92.00 87.00 74.00 58.00 99.00
1992 49.00 66.00 69.00 88.00 85.00 95.00 99.00 98.00 89.00 83.00 69.00 60.00 99.00
1993 63.00 61.00 73.00 83.00 90.00 99.00 99.00 101.00 91.00 86.00 70.00 63.00 101.00
1994 71.00 70.00 75.00 85.00 91.00 103.00 100.00 99.00 90.00 82.00 75.00 60.00 103.00
1995 60.00 67.00 73.00 80.00 85.00 96.00 105.00 101.00 97.00 84.00 80.00 70.00 o 105.00
1996 66.00 71.00 75.00 88.00 96.00 99.00 102.00 98.00 94.00 86.00 72.00 67.00 102.00
1997 64.00 62.00 78.00 80.00 96.00 98.00 100.00 94.00 92.00 87.00 73.00 57.00 100.00
1998 58.00 63.00 77.00 81.00 89.00 107.00 101.00 95.00 90.00 87.00 73.00 66.00 107.00
1999 71.00 71.00 76.00 78.00 m 88.00 100.00 100.00 94.00 90.00 ----- z 75.00 68.00 100.00
2000 74.00 72.00 75.00 89.00 99.00 101.00 102.00 100.00 97.00 90.00 68.00 68.00 102.00
2001 57.00 68.00 79.00 86.00 96.00 102.00 101.00 98.00 95.00 89.00 77.00 64.00 102.00
2002 63.00 73.00 76.00 83.00 98.00 101.00 104.00 102.00 92.00 80.00 69.00 57.00 104.00
2003 65.00 70.00 76.00 77.00 94.00 97.00 101.00 98.00 93.00 92.00 71.00 70.00 a 101.00
2004 60.00 71.00 84.00 80.00 89.00 96.00 98.00 98.00 93.00 80.00 71.00 61.00 98.00
2005 63.00 58.00 73.00 81.00 95.00 98.00 105.00 95.00 92.00 85.00 80.00 70.00 105.00
2006 67.00 71.00 73.00 a 83.00 92.00 99.00 101.00 91.00 89.00 87.00 79.00 a 68.00 101.00
2007 59.00 65.00 82.00 86.00 90.00 99.00 103.00 96.00 92.00 86.00 78.00 60.00 a 103.00
2008 57.00 70.00 76.00 82.00 95.00 98.00 98.00 99.00 92.00 84.00 79.00 68.00 99.00
2009 61.00 75.00 78.00 84.00 92.00 96.00 102.00 ----- z 92.00 84.00 83.00 55.00 102.00
2010 54.00 61.00 74.00 80.00 91.00 103.00 105.00 95.00 93.00 90.00 75.00 69.00 105.00
2011 61.00 a 70.00 e 77.00 83.00 90.00 100.00 99.00 99.00 95.00 86.00 74.00 62.00 b 100.00
2012 68.00 67.00 a 80.00 90.00 93.00 103.00 98.00 99.00 92.00 88.00 76.00 71.00 103.00
2013 61.00 62.00 82.00 73.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 32.00 z 82.00
Period of Record Statistics
MEAN 61.78 67.79 74.75 82.03 90.09 98.43 99.82 96.80 92.44 84.15 72.98 63.51 100.48
S.D. 5.50 4.13 4.28 3.89 3.54 2.71 1.96 2.49 2.58 3.31 3.97 4.48 2.17
SKEW -0.50 -0.28 0.35 0.07 0.47 0.58 0.54 -0.04 0.11 -0.10 0.08 -0.42 0.42
MAX 74.00 77.00 88.00 92.00 99.00 107.00 105.00 103.00 99.00 92.00 83.00 72.00 107.00
MIN 45.00 57.00 65.00 72.00 83.00 94.00 95.00 91.00 87.00 76.00 63.00 50.00 95.00
NO YRS 81 82 81 80 81 81 82 80 80 81 82 81 71