ST IGNATIUS, MONTANA

Monthly Total Cooling Degree Days

(247286)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201012
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
1896 0.00 z 0.00 e 0.00 0.00 0.00 52.00 152.50 n 26.00 t 5.00 0.00 a 0.00 a 0.00 c 57.00
1897 0.00 0.00 a 0.00 0.00 41.50 28.00 0.00 z 147.25 a 0.00 0.00 0.00 0.00 216.75
1898 0.00 0.00 0.00 0.00 4.50 4.50 0.00 z 41.50 o 0.00 a 0.00 0.00 0.00 9.00
1899 0.00 b 0.00 0.00 a 0.00 0.00 5.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.50
1900 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1902 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1904 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1905 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1906 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1907 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1908 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 n 0.00 a 0.00 0.00
1909 0.00 a 0.00 g 0.00 0.00 0.00 a 17.00 39.86 c 41.16 b 3.00 0.00 a 0.00 0.00 a 101.01
1910 0.00 0.00 a 0.00 b 4.50 1.00 16.50 130.20 a 31.00 8.33 c 0.00 0.00 b 0.00 a 191.53
1911 0.00 a 0.00 c 0.00 b 0.00 a 0.00 9.50 41.50 l 11.62 c 12.93 a 0.00 a 0.00 0.00 a 34.06
1912 0.00 0.00 0.00 0.00 0.00 38.50 14.50 16.02 a 0.00 0.00 0.00 0.00 69.02
1913 0.00 0.00 0.00 0.00 0.00 0.00 61.00 80.50 9.31 a 0.00 0.00 a 0.00 a 150.81
1914 0.00 a 0.00 a 0.00 a 0.00 a 0.00 15.00 119.50 72.85 a 4.66 a 0.00 a 0.00 a 0.00 a 212.01
1915 0.00 b 0.00 a 0.00 a 0.00 0.00 0.50 11.22 b 119.50 0.00 0.00 0.00 0.00 131.22
1916 0.00 0.00 d 0.00 0.00 a 0.00 a 2.59 a 22.98 b 26.35 a 2.50 0.00 a 0.00 0.00 a 54.42
1917 0.00 a 0.00 0.00 0.00 0.00 a 8.00 112.38 c 56.50 1.50 0.00 a 0.00 a 0.00 e 178.38
1918 0.00 0.00 0.00 0.00 b 0.00 a 103.00 h 150.72 b 88.83 e 4.04 d 2.14 b 0.00 b 0.00 e 245.73
1919 0.00 a 0.00 d 0.00 e 0.00 a 7.48 b 43.50 136.92 a 78.02 a 8.33 c 0.00 c 0.00 h 0.00 274.25
1920 0.00 0.00 0.00 a 0.00 0.00 5.50 134.00 97.50 6.00 0.00 0.00 0.00 243.00
1921 0.00 0.00 0.00 0.00 0.00 16.50 79.00 65.50 0.00 0.00 a 0.00 0.00 161.00
1922 0.00 0.00 0.00 0.00 2.00 60.00 52.50 97.00 6.50 0.00 0.00 0.00 218.00
1923 0.00 0.00 a 0.00 0.00 3.50 6.00 158.00 58.00 10.00 c 0.00 a 0.00 0.00 235.50
1924 0.00 0.00 0.00 0.00 1.00 4.00 125.00 36.68 a 3.00 0.00 0.00 0.00 169.68
1925 0.00 0.00 0.00 0.00 0.00 55.50 119.00 56.00 10.34 a 0.00 0.00 0.00 240.84
1926 0.00 0.00 0.00 0.00 0.00 40.00 120.50 54.00 0.00 0.00 0.00 h 0.00 214.50
1927 0.00 0.00 0.00 0.00 0.00 7.50 82.00 29.00 0.00 0.00 0.00 0.00 a 118.50
1928 0.00 0.00 0.00 0.00 16.00 5.50 118.50 37.00 1.50 0.00 0.00 0.00 178.50
1929 0.00 0.00 0.00 0.00 0.00 1.00 74.00 107.50 0.00 0.00 0.00 0.00 182.50
1930 0.00 0.00 0.00 0.00 0.00 5.50 91.50 104.50 4.00 0.00 0.00 0.00 205.50
1931 0.00 0.00 0.00 0.00 a 4.00 63.50 149.00 140.50 37.00 0.00 0.00 l 0.00 z 394.00
1932 0.00 i 0.00 0.00 0.00 0.50 45.00 99.00 80.00 4.50 0.00 0.00 0.00 229.00
1933 0.00 0.00 0.00 0.00 0.00 40.00 100.00 82.50 0.00 0.00 0.00 0.00 222.50
1934 0.00 0.00 0.00 0.00 23.50 15.00 108.50 59.00 5.00 0.00 0.00 0.00 211.00
1935 0.00 0.00 0.00 0.00 0.50 6.50 97.00 41.50 15.00 0.00 0.00 0.00 160.50
1936 0.00 0.00 0.00 0.00 43.00 71.90 a 202.50 125.00 11.00 0.00 0.00 0.00 453.40
1937 0.00 0.00 0.00 0.00 0.00 45.00 106.50 n 49.00 12.00 0.00 0.00 0.00 106.00
1938 0.00 0.00 0.00 0.00 2.50 29.50 149.00 54.50 29.00 0.00 0.00 0.00 264.50
1939 0.00 0.00 0.00 0.00 11.50 7.76 a 132.00 99.64 c 8.50 0.00 0.00 0.00 259.40
1940 0.00 0.00 0.00 0.00 10.00 74.50 150.00 87.50 27.50 0.00 0.00 0.00 349.50
1941 0.00 0.00 0.00 0.00 1.50 28.50 157.58 a 78.00 0.00 0.00 0.00 0.00 265.58
1942 0.00 0.00 b 0.00 0.00 a 1.00 0.50 78.50 106.00 1.50 0.00 0.00 0.00 187.50
1943 0.00 0.00 0.00 a 0.00 0.00 7.50 80.00 40.00 0.00 0.00 0.00 0.00 127.50
1944 0.00 0.00 0.00 0.00 1.50 6.00 91.00 24.50 16.00 0.00 0.00 0.00 a 139.00
1945 0.00 0.00 0.00 0.00 3.00 35.00 132.50 103.85 a 8.50 0.00 a 0.00 0.00 282.85
1946 0.00 0.00 0.00 0.00 1.00 5.50 109.00 56.00 2.00 0.00 0.00 a 0.00 173.50
1947 0.00 0.00 0.00 0.00 2.50 2.59 a 86.50 44.00 8.00 0.00 0.00 0.00 143.59
1948 0.00 a 0.00 0.00 0.00 2.00 28.50 24.50 23.00 3.00 0.00 0.00 0.00 81.00
1949 0.00 0.00 0.00 0.00 8.50 26.00 68.50 86.50 0.00 0.00 0.00 0.00 189.50
1950 0.00 0.00 0.00 0.00 0.00 11.00 63.50 37.50 19.50 0.00 0.00 0.00 131.50
1951 0.00 0.00 0.00 0.00 2.00 2.00 103.50 64.00 0.00 0.00 0.00 0.00 171.50
1952 0.00 0.00 0.00 0.00 0.00 10.00 98.00 90.50 13.00 0.00 0.00 0.00 211.50
1953 0.00 a 0.00 0.00 0.00 0.00 3.50 137.00 113.00 11.50 0.00 0.00 0.00 265.00
1954 0.00 0.00 0.00 0.00 9.00 13.00 122.00 32.00 0.00 0.00 0.00 0.00 176.00
1955 0.00 0.00 0.00 0.00 0.00 48.00 122.00 88.50 34.66 a 0.00 0.00 0.00 293.16
1956 0.00 0.00 0.00 0.00 8.00 15.50 148.50 57.50 5.50 0.00 0.00 0.00 235.00
1957 0.00 0.00 0.00 0.00 5.50 36.00 105.00 56.50 16.50 0.00 0.00 0.00 219.50
1958 0.00 0.00 0.00 0.00 34.50 45.50 95.50 179.00 14.00 0.00 0.00 0.00 368.50
1959 0.00 0.00 0.00 0.00 0.00 35.00 134.50 55.00 7.00 0.00 0.00 0.00 231.50
1960 0.00 0.00 0.00 0.00 1.00 24.50 230.00 56.00 11.50 0.00 0.00 0.00 323.00
1961 0.00 0.00 0.00 0.00 1.50 79.50 150.50 190.50 0.00 0.00 0.00 0.00 422.00
1962 0.00 c 0.00 0.00 0.00 0.00 18.00 76.00 77.50 0.00 0.00 0.00 0.00 171.50
1963 0.00 0.00 0.00 0.00 0.00 36.00 62.50 120.00 32.00 0.00 0.00 0.00 250.50
1964 0.00 0.00 0.00 0.00 0.00 24.50 95.00 36.00 0.00 0.00 0.00 0.00 155.50
1965 0.00 0.00 0.00 0.00 2.00 14.00 94.50 92.50 0.00 0.00 0.00 0.00 203.00
1966 0.00 0.00 0.00 0.00 8.50 9.00 88.50 78.50 14.00 0.00 0.00 0.00 198.50
1967 0.00 0.00 0.00 0.00 3.00 20.50 141.50 180.50 62.00 0.00 0.00 0.00 407.50
1968 0.00 0.00 0.00 0.00 0.00 22.50 131.00 56.50 4.50 0.00 0.00 0.00 214.50
1969 0.00 0.00 0.00 0.00 1.50 28.00 70.00 95.00 9.00 0.00 0.00 0.00 203.50
1970 0.00 0.00 0.00 0.00 1.50 98.50 149.00 84.00 3.00 0.00 0.00 0.00 336.00
1971 0.00 0.00 0.00 0.00 1.00 19.00 112.00 184.00 0.00 0.00 0.00 0.00 316.00
1972 0.00 0.00 0.00 0.00 6.50 46.50 85.50 140.50 1.00 0.00 0.00 0.00 280.00
1973 0.00 0.00 0.00 0.00 8.50 35.50 140.50 114.00 7.00 0.00 0.00 0.00 305.50
1974 0.00 0.00 0.00 0.00 0.00 87.50 90.50 58.00 1.50 0.00 0.00 0.00 237.50
1975 0.00 0.00 0.00 0.00 0.00 0.00 z 192.00 24.50 3.00 0.00 0.00 0.00 219.50
1976 0.00 0.00 0.00 0.00 2.00 11.50 69.00 22.50 11.00 0.00 0.00 0.00 116.00
1977 0.00 0.00 0.00 4.00 0.00 52.50 76.00 96.50 2.50 0.00 h 0.00 0.00 231.50
1978 0.00 a 0.00 0.00 0.00 0.00 18.62 a 52.00 58.00 11.00 0.00 0.00 0.00 139.62
1979 0.00 0.00 0.00 0.00 4.00 43.00 76.50 40.00 0.00 0.00 0.00 0.00 163.50
1980 0.00 0.00 0.00 0.00 2.50 8.50 60.00 8.27 a 3.50 0.00 0.00 0.00 a 82.77
1981 0.00 0.00 0.00 0.00 1.00 9.00 37.50 107.00 9.83 a 0.00 0.00 0.00 164.33
1982 0.00 0.00 0.00 0.00 0.00 14.00 44.50 53.50 5.50 0.00 0.00 0.00 117.50
1983 0.00 0.00 0.00 0.00 1.50 7.50 21.00 107.50 5.00 0.00 0.00 0.00 142.50
1984 0.00 0.00 0.00 0.00 1.00 28.45 a 91.00 100.50 8.50 0.00 0.00 0.00 a 229.45
1985 0.00 0.00 0.00 0.00 14.47 a 46.50 246.00 32.50 0.52 a 0.00 0.00 0.00 339.98
1986 0.00 0.00 0.00 1.00 30.50 95.00 0.00 z 139.50 1.50 0.00 0.00 0.00 267.50
1987 0.00 0.00 0.00 0.00 7.50 48.50 71.00 24.50 5.50 0.00 0.00 0.00 157.00
1988 0.00 a 0.00 0.00 0.00 1.50 106.50 143.50 118.00 38.00 0.00 0.00 0.00 407.50
1989 0.00 0.00 0.00 0.00 1.50 48.00 141.00 71.50 0.00 0.00 0.00 0.00 262.00
1990 0.00 0.00 0.00 0.00 0.00 45.50 138.00 122.50 30.50 0.00 0.00 0.00 336.50
1991 0.00 0.00 0.00 0.00 0.00 5.00 107.00 129.00 5.00 0.00 0.00 0.00 246.00
1992 0.00 0.00 0.00 0.00 3.50 88.00 51.00 122.00 5.50 0.00 0.00 0.00 270.00
1993 0.00 0.00 0.00 0.00 7.00 23.50 14.00 41.50 9.00 0.00 0.00 0.00 95.00
1994 0.00 0.00 0.00 0.00 8.00 37.00 171.00 146.50 7.50 0.00 0.00 0.00 370.00
1995 0.00 0.00 0.00 0.00 4.50 9.50 96.00 72.50 15.50 0.00 0.00 0.00 198.00
1996 0.00 0.00 0.00 0.00 0.00 16.00 136.50 100.50 10.50 0.00 0.00 0.00 263.50
1997 0.00 z 0.00 0.00 0.00 z 3.50 5.19 d 40.00 k 65.00 m 4.00 i 0.00 0.00 0.00 m 8.69
1998 0.00 p 0.00 0.00 i 0.00 j 0.00 0.50 186.00 151.00 84.00 0.00 0.00 0.00 421.50
1999 0.00 0.00 0.00 0.00 7.00 26.00 87.50 133.50 2.00 0.00 0.00 0.00 256.00
2000 0.00 0.00 0.00 0.00 1.00 4.50 126.50 116.00 7.00 0.00 0.00 0.00 a 255.00
2001 0.00 0.00 0.00 0.00 16.50 22.50 110.00 134.50 15.50 0.00 0.00 a 0.00 p 299.00
2002 0.00 0.00 0.00 0.00 2.00 41.00 196.50 42.00 10.00 0.00 0.00 0.00 291.50
2003 0.00 0.00 0.00 0.00 14.50 57.00 239.50 159.00 34.00 3.00 0.00 0.00 507.00
2004 0.00 0.00 0.00 0.00 0.00 39.50 179.50 140.50 6.50 0.00 0.00 0.00 o 366.00
2005 0.00 k 0.00 i 0.00 0.00 0.00 14.40 e 161.00 123.50 f 2.50 0.00 g 0.00 i 0.00 k 177.90
2006 0.00 e 0.00 0.00 d 0.00 21.00 51.00 229.00 109.50 11.00 0.00 0.00 0.00 421.50
2007 0.00 0.00 0.00 0.00 2.00 43.50 335.50 87.50 25.50 0.00 0.00 0.00 494.00
2008 0.00 0.00 0.00 0.00 16.00 25.50 124.00 100.50 0.50 0.00 0.00 0.00 266.50
2009 0.00 0.00 0.00 0.00 16.50 25.00 122.50 94.00 21.50 0.00 0.00 0.00 279.50
2010 0.00 0.00 0.00 0.00 1.00 0.00 z 83.00 76.00 1.00 0.00 0.00 0.00 161.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.09 4.52 28.03 112.55 82.31 9.29 0.05 0.00 0.00 231.19
S.D. 0.00 0.00 0.00 0.59 8.25 24.26 54.32 42.16 12.81 0.36 0.00 0.00 95.02
SKEW 0.00 0.00 0.00 6.79 2.87 1.16 0.91 0.44 3.05 7.26 0.00 0.00 0.76
MAX 0.00 0.00 0.00 4.50 43.00 106.50 335.50 190.50 84.00 3.00 0.00 0.00 507.00
MIN 0.00 0.00 0.00 0.00 0.00 0.00 11.22 8.27 0.00 0.00 0.00 0.00 54.42
NO YRS 101 104 105 104 106 103 98 101 104 103 102 101 85