WEST YELLOWSTONE, st

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(248857)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201212
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
1924 36.00 a 54.00 45.00 59.00 70.00 82.00 90.00 88.00 86.00 d 62.00 c 55.00 c 39.00 b 90.00
1925 40.00 c 41.00 d 55.00 f 63.00 l 72.00 f 83.00 p 91.00 81.00 81.00 a 70.00 48.00 b 49.00 b 91.00
1926 32.00 e 42.00 d 52.00 b 71.00 f 76.00 89.00 b 87.00 86.00 70.00 b 64.00 51.00 44.00 g 89.00
1927 44.00 e 36.00 i 48.00 f 63.00 k 76.00 c 89.00 92.00 82.00 a 81.00 71.00 a 49.00 35.00 c 92.00
1928 38.00 g 42.00 l 57.00 63.00 d 77.00 79.00 a 87.00 b 92.00 84.00 b 67.00 b 50.00 a 39.00 92.00
1929 31.00 k 36.00 c 51.00 d 54.00 c 78.00 d 85.00 94.00 90.00 75.00 g 62.00 b 42.00 42.00 94.00
1930 30.00 40.00 f 41.00 f 64.00 d ----- z 79.00 91.00 83.00 80.00 63.00 61.00 35.00 e 91.00
1931 47.00 c 43.00 c 49.00 j 65.00 75.00 o ----- z 95.00 a 89.00 85.00 n 69.00 b 61.00 42.00 95.00
1932 30.00 52.00 45.00 a 65.00 81.00 84.00 c 85.00 e 89.00 81.00 72.00 a 51.00 38.00 89.00
1933 42.00 37.00 50.00 59.00 77.00 85.00 b 96.00 b 93.00 84.00 76.00 b 51.00 b 41.00 96.00
1934 41.00 52.00 54.00 73.00 84.00 81.00 94.00 91.00 82.00 83.00 58.00 39.00 94.00
1935 46.00 49.00 55.00 62.00 71.00 85.00 96.00 93.00 81.00 76.00 41.00 38.00 96.00
1936 40.00 47.00 51.00 h 75.00 88.00 93.00 97.00 90.00 82.00 a 73.00 51.00 b 41.00 c 97.00
1937 26.00 g 42.00 g 55.00 f 64.00 j 78.00 b 89.00 a 91.00 89.00 a 83.00 a 70.00 c 54.00 d 40.00 d 91.00
1938 40.00 g 55.00 f 51.00 f 69.00 a 76.00 82.00 86.00 86.00 83.00 70.00 37.00 37.00 86.00
1939 33.00 32.00 61.00 76.00 81.00 87.00 95.00 90.00 83.00 65.00 a 60.00 50.00 95.00
1940 40.00 40.00 57.00 62.00 79.00 91.00 92.00 96.00 86.00 70.00 45.00 42.00 96.00
1941 43.00 47.00 56.00 64.00 78.00 d 86.00 87.00 90.00 73.00 65.00 52.00 47.00 90.00
1942 41.00 38.00 54.00 65.00 80.00 81.00 93.00 92.00 86.00 74.00 40.00 39.00 93.00
1943 33.00 45.00 55.00 64.00 78.00 81.00 a 91.00 88.00 84.00 76.00 50.00 f 42.00 91.00
1944 39.00 45.00 50.00 61.00 76.00 85.00 88.00 87.00 83.00 71.00 44.00 41.00 88.00
1945 39.00 43.00 55.00 66.00 70.00 83.00 91.00 88.00 83.00 71.00 49.00 41.00 91.00
1946 38.00 52.00 60.00 72.00 71.00 82.00 92.00 91.00 88.00 58.00 48.00 b 54.00 92.00
1947 39.00 56.00 57.00 a 60.00 l ----- z 85.00 l 89.00 85.00 84.00 68.00 61.00 36.00 89.00
1948 40.00 44.00 ----- z 64.00 i 76.00 a 81.00 a 87.00 a 88.00 83.00 70.00 42.00 32.00 88.00
1949 27.00 47.00 50.00 66.00 77.00 80.00 89.00 89.00 79.00 a 63.00 56.00 b 38.00 f 89.00
1950 38.00 b 50.00 51.00 58.00 71.00 84.00 81.00 86.00 91.00 73.00 51.00 40.00 91.00
1951 34.00 48.00 50.00 58.00 76.00 a 78.00 89.00 86.00 77.00 a 71.00 47.00 32.00 89.00
1952 33.00 43.00 45.00 69.00 71.00 83.00 87.00 86.00 82.00 75.00 51.00 a 35.00 c 87.00
1953 44.00 39.00 58.00 a 63.00 69.00 81.00 91.00 87.00 85.00 a 74.00 a 55.00 35.00 91.00
1954 40.00 46.00 46.00 c 60.00 83.00 87.00 92.00 90.00 83.00 70.00 57.00 38.00 92.00
1955 33.00 41.00 52.00 60.00 75.00 86.00 93.00 87.00 87.00 72.00 b 46.00 41.00 93.00
1956 40.00 45.00 59.00 65.00 80.00 84.00 90.00 86.00 85.00 75.00 50.00 39.00 90.00
1957 34.00 49.00 51.00 67.00 72.00 83.00 89.00 88.00 80.00 79.00 51.00 37.00 89.00
1958 37.00 56.00 50.00 57.00 83.00 85.00 84.00 90.00 85.00 75.00 55.00 41.00 90.00
1959 39.00 43.00 49.00 60.00 76.00 88.00 93.00 87.00 84.00 65.00 56.00 43.00 93.00
1960 41.00 35.00 59.00 63.00 80.00 81.00 95.00 88.00 81.00 71.00 52.00 38.00 95.00
1961 37.00 41.00 54.00 59.00 80.00 86.00 90.00 96.00 77.00 69.00 49.00 35.00 96.00
1962 42.00 46.00 49.00 70.00 65.00 86.00 84.00 86.00 80.00 72.00 64.00 42.00 86.00
1963 37.00 52.00 54.00 63.00 72.00 78.00 88.00 92.00 83.00 74.00 49.00 35.00 92.00
1964 34.00 34.00 58.00 62.00 79.00 85.00 90.00 87.00 75.00 77.00 54.00 39.00 90.00
1965 36.00 42.00 58.00 58.00 72.00 80.00 85.00 89.00 72.00 70.00 61.00 42.00 89.00
1966 36.00 43.00 61.00 58.00 81.00 87.00 92.00 87.00 82.00 64.00 49.00 36.00 92.00
1967 35.00 41.00 46.00 50.00 78.00 82.00 89.00 88.00 87.00 62.00 53.00 32.00 89.00
1968 38.00 47.00 54.00 66.00 73.00 85.00 89.00 88.00 81.00 64.00 41.00 41.00 89.00
1969 40.00 40.00 52.00 65.00 80.00 89.00 88.00 93.00 a 85.00 61.00 53.00 40.00 93.00
1970 39.00 45.00 46.00 55.00 73.00 91.00 88.00 89.00 76.00 74.00 47.00 35.00 91.00
1971 39.00 41.00 48.00 58.00 79.00 84.00 89.00 90.00 77.00 73.00 54.00 35.00 90.00
1972 34.00 46.00 59.00 61.00 80.00 81.00 88.00 89.00 75.00 68.00 41.00 35.00 89.00
1973 40.00 49.00 48.00 54.00 c 75.00 83.00 90.00 86.00 79.00 68.00 51.00 38.00 90.00
1974 45.00 31.00 s 45.00 c 65.00 73.00 89.00 92.00 84.00 79.00 71.00 44.00 36.00 92.00
1975 40.00 35.00 44.00 46.00 69.00 81.00 88.00 85.00 80.00 73.00 53.00 43.00 88.00
1976 42.00 41.00 48.00 59.00 73.00 85.00 89.00 84.00 84.00 71.00 46.00 q 34.00 89.00
1977 35.00 45.00 52.00 d 71.00 a 76.00 87.00 86.00 85.00 83.00 66.00 b 50.00 37.00 87.00
1978 35.00 42.00 59.00 58.00 75.00 83.00 87.00 86.00 84.00 70.00 a 55.00 k 31.00 l 87.00
1979 29.00 j 39.00 g ----- z 56.00 x 79.00 88.00 88.00 90.00 85.00 73.00 44.00 40.00 90.00
1980 38.00 ----- z 44.00 p 43.00 x 75.00 79.00 88.00 81.00 80.00 73.00 60.00 44.00 88.00
1981 42.00 49.00 50.00 a 68.00 73.00 86.00 88.00 91.00 85.00 63.00 59.00 43.00 91.00
1982 33.00 43.00 49.00 59.00 75.00 84.00 87.00 89.00 83.00 67.00 43.00 35.00 89.00
1983 34.00 43.00 46.00 54.00 80.00 80.00 88.00 92.00 83.00 65.00 53.00 33.00 92.00
1984 38.00 37.00 42.00 61.00 80.00 86.00 86.00 88.00 82.00 70.00 a 43.00 34.00 88.00
1985 35.00 38.00 50.00 66.00 76.00 84.00 89.00 86.00 71.00 62.00 36.00 l 34.00 89.00
1986 47.00 51.00 59.00 64.00 84.00 84.00 84.00 87.00 ----- z 62.00 51.00 a 37.00 87.00
1987 41.00 48.00 54.00 75.00 79.00 82.00 84.00 82.00 84.00 75.00 51.00 41.00 84.00
1988 40.00 52.00 49.00 68.00 80.00 91.00 90.00 89.00 82.00 74.00 57.00 33.00 91.00
1989 37.00 44.00 53.00 53.00 i 69.00 84.00 91.00 84.00 76.00 64.00 49.00 38.00 91.00
1990 40.00 43.00 53.00 67.00 70.00 89.00 89.00 90.00 86.00 70.00 50.00 43.00 90.00
1991 32.00 ----- z ----- z ----- z ----- z ----- z ----- z 88.00 84.00 74.00 42.00 33.00 88.00
1992 42.00 47.00 55.00 75.00 80.00 85.00 87.00 90.00 l 77.00 78.00 39.00 33.00 90.00
1993 30.00 m 36.00 n 53.00 55.00 77.00 83.00 83.00 84.00 77.00 73.00 a 43.00 39.00 i 84.00
1994 36.00 a 42.00 56.00 71.00 81.00 85.00 o 93.00 92.00 83.00 63.00 42.00 a 37.00 a 93.00
1995 36.00 46.00 46.00 55.00 74.00 80.00 86.00 87.00 65.00 z 69.00 46.00 43.00 87.00
1996 35.00 43.00 48.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 48.00
1997 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1998 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1999 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2000 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2001 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2002 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2003 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2004 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2005 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2008 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2012 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 37.96 44.33 52.13 62.90 76.40 84.27 89.34 88.04 81.57 69.74 50.19 38.74 90.83
S.D. 4.14 5.33 4.82 6.24 4.38 3.44 3.32 3.14 4.08 5.00 6.23 4.37 2.68
SKEW -0.08 0.04 0.01 -0.01 -0.11 0.31 0.09 0.05 -0.78 -0.11 0.05 0.88 0.06
MAX 47.00 56.00 61.00 76.00 88.00 93.00 97.00 96.00 91.00 83.00 64.00 54.00 96.00
MIN 27.00 32.00 42.00 46.00 65.00 78.00 81.00 81.00 70.00 58.00 37.00 32.00 84.00
NO YRS 67 63 62 62 67 67 71 71 68 72 68 68 41