YELLOWSTONE PARK, WYOMING

Monthly Total Cooling Degree Days

(489905)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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.
Months with 5 missing days or less use mean for missing day(s)
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 a 0.00 0.00 0.00 0.00
1949 0.00 0.00 a 0.00 0.00 a 0.00 5.17 a 15.00 58.38 a 0.00 0.00 0.00 0.00 78.56
1950 0.00 0.00 0.00 0.00 0.00 0.00 2.50 1.50 19.50 0.00 0.00 0.00 23.50
1951 0.00 0.00 a 0.00 0.00 e 0.00 0.00 40.50 17.50 0.00 0.00 0.00 0.00 58.00
1952 0.00 0.00 0.00 0.00 0.00 0.00 a 6.50 7.00 0.00 f 0.00 0.00 0.00 13.50
1953 0.00 0.00 0.00 0.00 0.00 0.00 a 0.00 z 12.40 a 0.00 0.00 0.00 0.00 a 12.40
1954 0.00 0.00 0.00 0.00 0.00 2.40 e 69.75 a 18.50 0.50 0.00 0.00 0.00 91.15
1955 0.00 0.00 0.00 0.00 0.00 1.50 56.00 42.00 5.50 0.00 0.00 0.00 105.00
1956 0.00 0.00 a 0.00 0.00 0.00 0.00 37.00 6.50 0.00 0.00 0.00 0.00 43.50
1957 0.00 0.00 0.00 0.00 0.00 0.00 20.00 16.50 0.00 0.00 0.00 0.00 36.50
1958 0.00 0.00 0.00 0.00 0.00 a 0.50 15.50 38.00 0.00 0.00 0.00 0.00 54.00
1959 0.00 0.00 0.00 0.00 0.00 a 1.00 18.50 6.50 0.00 0.00 0.00 0.00 26.00
1960 0.00 0.00 0.00 0.00 0.00 0.00 62.50 20.00 0.00 0.00 a 0.00 0.00 82.50
1961 0.00 b 0.00 a 0.00 l 0.00 d 0.00 9.00 h 38.50 45.00 0.00 0.00 0.00 a 0.00 a 83.50
1962 0.00 a 0.00 0.00 0.00 0.00 b 0.00 0.00 12.50 0.00 0.00 0.00 0.00 d 12.50
1963 0.00 b 0.00 0.00 0.00 0.00 a 0.00 b 41.33 a 26.35 a 2.59 a 0.00 0.00 b 0.00 a 70.27
1964 0.00 a 0.00 a 0.00 0.00 0.00 3.21 b 40.82 a 8.61 d 0.00 d 0.00 0.00 0.00 g 52.64
1965 0.00 c 0.00 b 0.00 h 0.00 d 0.00 a 0.00 14.50 25.00 0.00 g 0.00 a 0.00 0.00 b 39.50
1966 0.00 b 0.00 c 0.00 0.00 b 0.00 g 3.33 c 39.02 b 2.58 a 0.00 z 0.00 z 0.00 z 0.00 z 44.93
1967 0.00 z 0.00 j 0.00 d 0.00 f 0.00 0.50 49.50 25.50 9.50 0.00 b 0.00 a 0.00 a 85.00
1968 0.00 0.00 0.00 a 0.00 c 0.00 5.50 43.92 a 5.50 0.00 0.00 0.00 0.00 54.92
1969 0.00 0.00 a 0.00 0.00 a 0.00 19.00 31.00 91.97 a 3.50 0.00 0.00 0.00 e 145.47
1970 0.00 0.00 c 0.00 0.00 0.00 27.00 57.00 60.50 2.07 a 0.00 0.00 0.00 c 146.57
1971 0.00 0.00 0.00 d 0.00 c 0.00 z 10.50 16.50 101.50 0.00 b 0.00 a 0.00 a 0.00 128.50
1972 0.00 0.00 0.00 0.00 0.00 0.50 26.00 43.00 0.00 a 0.00 d 0.00 0.00 69.50
1973 0.00 0.00 0.00 0.00 0.00 6.00 43.00 43.00 0.00 0.00 0.00 z 0.00 e 92.00
1974 0.00 0.00 a 0.00 a 0.00 0.00 41.00 75.00 10.50 0.00 0.00 0.00 0.00 f 126.50
1975 0.00 b 0.00 a 0.00 0.00 0.00 0.00 68.50 11.00 0.00 0.00 0.00 0.00 79.50
1976 0.00 0.00 0.00 0.00 0.00 0.00 c 57.50 5.50 10.50 f 0.00 0.00 a 0.00 63.00
1977 0.00 0.00 d 0.00 d 0.00 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 k 0.00 z 0.00 f 0.00
1978 0.00 z 0.00 z 0.00 z 0.00 c 0.00 j 5.50 38.00 24.00 19.50 0.00 j 0.00 z 0.00 z 87.00
1979 0.00 g 0.00 0.00 0.00 0.00 a 15.00 a 45.50 35.50 8.33 c 0.00 c 0.00 a 0.00 104.33
1980 0.00 a 0.00 a 0.00 g 0.00 c 0.00 g 3.21 b 33.58 a 5.17 a 3.46 d 0.00 f 0.00 b 0.00 45.43
1981 0.00 0.00 d 0.00 c 0.00 d 0.00 f 0.00 e 0.00 z 0.00 z 0.00 z 0.00 o 0.00 i 0.00 i 0.00
1982 0.00 0.00 0.00 0.00 0.00 p 4.50 32.00 45.50 3.00 o 0.00 z 0.00 0.00 82.00
1983 0.00 0.00 0.00 0.00 0.00 1.00 38.50 0.00 z 5.00 f 0.00 z 0.00 0.00 39.50
1984 0.00 0.00 0.00 0.00 a 1.50 6.50 36.00 27.50 0.00 z 0.00 z 0.00 0.00 z 71.50
1985 0.00 0.00 0.00 0.00 0.00 i 7.76 a 89.50 0.00 z 0.00 0.00 0.00 0.00 97.26
1986 0.00 0.00 0.00 0.00 0.00 18.00 14.00 28.50 0.00 0.00 0.00 0.00 60.50
1987 0.00 0.00 0.00 0.00 0.50 17.00 38.00 14.00 2.00 0.00 0.00 0.00 71.50
1988 0.00 0.00 0.00 0.00 0.00 67.00 86.50 38.50 0.00 0.00 0.00 0.00 192.00
1989 0.00 0.00 0.00 0.00 0.00 2.00 114.00 26.00 0.00 0.00 0.00 0.00 142.00
1990 0.00 0.00 0.00 0.00 0.00 28.00 54.00 47.50 9.00 0.00 0.00 0.00 138.50
1991 0.00 0.00 0.00 0.00 0.00 0.00 57.50 65.00 6.50 0.00 0.00 0.00 129.00
1992 0.00 0.00 0.00 0.00 0.00 8.00 3.00 38.50 0.00 0.00 0.00 0.00 49.50
1993 0.00 0.00 0.00 0.00 0.00 1.50 6.00 2.50 0.00 0.00 0.00 0.00 10.00
1994 0.00 0.00 0.00 0.00 0.00 15.00 47.50 57.00 4.50 0.00 0.00 0.00 124.00
1995 0.00 0.00 0.00 0.00 0.00 0.50 29.50 37.50 13.50 0.00 0.00 a 0.00 81.00
1996 0.00 0.00 0.00 0.00 0.00 3.50 62.00 56.50 0.00 0.00 0.00 0.00 122.00
1997 0.00 0.00 0.00 0.00 0.00 2.50 31.00 23.50 1.00 0.00 0.00 0.00 58.00
1998 0.00 0.00 0.00 0.00 0.00 0.00 79.00 62.00 36.00 0.00 0.00 0.00 177.00
1999 0.00 0.00 0.00 0.00 0.00 2.00 54.00 36.00 0.00 0.00 0.00 0.00 92.00
2000 0.00 0.00 0.00 0.00 0.00 6.00 82.50 73.00 4.00 0.00 0.00 0.00 165.50
2001 0.00 a 0.00 0.00 0.00 0.00 13.00 56.00 51.67 a 18.00 0.00 a 0.00 0.00 138.67
2002 0.00 0.00 0.00 0.00 0.00 18.50 103.50 0.00 3.00 0.00 0.00 0.00 125.00
2003 0.00 0.00 0.00 0.00 5.00 4.00 138.50 123.00 0.50 0.00 0.00 z 0.00 271.00
2004 0.00 0.00 0.00 0.00 0.00 0.00 37.00 21.50 0.50 0.00 0.00 0.00 59.00
2005 0.00 0.00 0.00 0.00 0.00 12.50 121.50 48.00 6.00 0.00 0.00 0.00 188.00
2006 0.00 0.00 z 0.00 0.00 a 2.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.00 0.18 7.08 46.55 32.42 3.65 0.00 0.00 0.00 91.68
S.D. 0.00 0.00 0.00 0.00 0.78 11.83 30.29 26.56 6.99 0.00 0.00 0.00 50.02
SKEW 0.00 0.00 0.00 0.00 5.20 3.04 0.92 1.19 2.76 0.00 0.00 0.00 0.34
MAX 0.00 0.00 0.00 0.00 5.00 67.00 138.50 123.00 36.00 0.00 0.00 0.00 192.00
MIN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.00
NO YRS 55 55 54 57 50 55 54 54 49 50 52 51 36