HETCH HETCHY, CALIFORNIA

Monthly Total Cooling Degree Days

(043939)

Base Temperature = 65 F

File last updated on Jul 24, 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
1931 0.00 f 0.00 0.00 7.00 19.00 47.00 415.50 329.00 45.00 4.00 0.00 0.00 866.50
1932 0.00 0.00 0.00 0.00 0.00 99.50 164.50 161.50 147.50 11.50 0.00 0.00 584.50
1933 0.00 0.00 0.00 0.00 21.50 34.50 282.50 251.50 33.00 45.50 0.00 0.00 668.50
1934 0.00 0.00 0.00 3.50 24.50 44.00 259.50 289.00 162.50 18.50 0.00 0.00 801.50
1935 0.00 0.00 0.00 0.00 13.00 88.50 157.50 238.00 134.00 2.50 0.00 0.00 633.50
1936 0.00 0.00 0.00 2.00 18.50 87.00 263.50 255.50 110.50 9.50 0.00 0.00 746.50
1937 0.00 0.00 0.00 0.00 13.50 67.00 239.00 224.00 92.00 0.00 b 0.00 e 0.00 635.50
1938 0.00 0.00 0.00 0.00 22.50 100.00 228.50 207.50 103.00 0.00 0.00 0.00 661.50
1939 0.00 0.00 0.00 0.00 14.50 79.50 249.00 282.50 88.50 0.00 0.00 0.00 714.00
1940 0.00 0.00 0.00 0.00 14.50 156.00 151.00 221.00 20.00 3.00 0.00 0.00 565.50
1941 0.00 0.00 0.00 0.00 8.50 13.00 195.50 99.00 19.50 0.00 0.00 0.00 335.50
1942 0.00 0.00 0.00 0.00 7.50 18.50 243.00 210.50 48.00 12.00 0.00 0.00 539.50
1943 0.00 0.00 0.00 0.00 17.50 15.00 180.00 111.50 133.00 26.00 0.00 0.00 483.00
1944 0.00 0.00 a 0.00 0.00 4.50 19.50 138.00 173.00 130.00 0.00 0.00 0.00 465.00
1945 0.00 0.00 0.00 0.00 3.00 48.50 259.50 170.00 159.00 6.50 0.00 0.00 646.50
1946 0.00 0.00 0.00 3.50 0.00 19.00 201.50 241.00 77.50 0.00 0.00 0.00 542.50
1947 0.00 0.00 0.00 10.00 45.50 43.50 113.00 129.00 155.50 11.00 0.00 0.00 507.50
1948 0.00 0.00 0.00 0.00 0.00 33.00 139.00 107.00 127.50 0.50 0.00 0.00 407.00
1949 0.00 0.00 0.00 0.00 9.50 86.50 195.82 a 110.50 108.50 7.50 0.00 0.00 518.32
1950 0.00 0.00 0.00 b 0.50 28.00 g 61.00 248.00 211.50 88.00 19.00 0.00 0.00 628.00
1951 0.00 0.00 0.00 2.00 17.10 b 62.50 201.50 181.50 135.50 6.50 0.00 0.00 606.60
1952 0.00 0.00 0.00 0.00 15.50 13.50 212.50 158.50 89.50 36.50 0.00 0.00 526.00
1953 0.00 0.00 a 0.00 0.00 0.00 12.50 231.50 112.50 141.00 20.00 0.00 0.00 517.50
1954 0.00 0.00 0.00 10.00 18.50 64.00 160.00 g 90.50 44.50 9.50 0.00 0.00 237.00
1955 0.00 0.00 0.00 0.00 b 10.50 48.50 128.50 251.00 142.00 3.50 0.00 0.00 584.00
1956 0.00 g 0.00 0.00 0.00 3.32 c 49.00 162.00 62.50 68.00 0.50 i 0.00 0.00 344.82
1957 0.00 a 0.00 0.00 h 0.00 b 1.11 c 98.28 a 137.20 d 105.50 77.00 0.00 0.00 b 0.00 i 419.09
1958 0.00 0.00 0.00 0.00 10.73 e 40.34 a 139.00 276.00 71.54 d 37.50 0.00 0.00 575.11
1959 0.00 0.00 0.00 0.00 4.50 89.50 321.00 212.00 79.00 14.00 0.00 0.00 720.00
1960 0.00 0.00 0.00 0.00 1.03 a 157.76 a 290.37 a 180.50 98.79 a 3.62 a 0.00 c 0.00 a 732.07
1961 0.00 a 0.00 b 0.00 3.00 0.00 a 172.50 274.50 201.00 27.41 a 21.18 a 0.00 b 0.00 b 699.60
1962 0.00 e 0.00 d 0.00 d 1.15 d 0.00 a 49.14 a 140.57 b 128.50 64.82 b 4.28 b 0.00 b 0.00 a 388.46
1963 0.00 a 0.00 c 0.00 0.00 6.72 a 25.50 81.78 b 90.00 101.90 a 23.00 0.00 c 0.00 a 328.89
1964 0.00 a 0.00 0.00 0.00 a 0.00 a 33.62 a 159.00 177.50 24.83 a 31.52 a 0.00 d 0.00 a 426.46
1965 0.00 0.00 b 0.00 b 0.00 c 2.50 5.50 107.00 104.50 8.28 a 12.29 b 0.00 a 0.00 d 240.07
1966 0.00 c 0.00 b 0.00 b 0.00 0.00 z 67.50 d 119.50 239.00 55.00 1.03 a 0.00 c 0.00 a 482.03
1967 0.00 a 0.00 b 0.00 0.00 50.50 39.00 218.50 260.50 61.11 c 0.00 a 0.00 c 0.00 b 629.61
1968 0.00 a 0.00 b 0.00 0.00 1.50 89.50 207.18 a 105.00 73.00 0.00 0.00 a 0.00 b 476.18
1969 0.00 a 0.00 e 0.00 i 0.00 b 8.00 15.50 145.50 177.00 83.89 c 0.50 0.00 c 0.00 430.39
1970 0.00 a 0.00 b 0.00 0.00 26.00 105.00 236.50 223.00 39.31 a 17.57 a 0.00 c 0.00 c 647.38
1971 0.00 c 0.00 b 0.00 a 0.00 a 0.00 26.00 197.00 256.00 103.00 13.95 a 0.00 a 0.00 c 595.95
1972 0.00 a 0.00 c 0.00 0.00 27.50 84.50 261.50 186.50 33.00 1.03 a 0.00 c 0.00 c 594.03
1973 0.00 z 0.00 b 0.00 d 0.00 33.00 112.50 192.50 175.67 a 30.00 a 0.00 d 0.00 b 0.00 d 543.67
1974 0.00 a 0.00 b 0.00 0.00 18.50 64.00 163.50 159.00 120.50 9.50 0.00 d 0.00 c 535.00
1975 0.00 a 0.00 b 0.00 a 0.00 23.50 0.00 z 112.50 f 154.00 111.21 a 7.46 d 0.00 b 0.00 a 296.17
1976 0.00 g 0.00 b 0.00 0.00 10.50 63.50 179.28 a 49.50 58.39 b 0.00 a 0.00 d 0.00 a 361.18
1977 0.00 a 0.00 a 0.00 0.00 1.50 126.50 189.62 a 224.50 79.82 b 7.75 a 0.00 a 0.00 b 629.69
1978 0.00 0.00 b 0.00 0.00 10.50 34.00 152.42 a 161.50 29.50 f 0.00 z 0.00 b 0.00 z 358.42
1979 0.00 z 0.00 b 0.00 0.00 11.37 a 65.50 165.33 a 119.00 114.64 b 20.15 a 0.00 c 0.00 a 495.99
1980 0.00 a 0.00 c 0.00 0.00 6.20 a 18.00 174.50 142.60 a 40.71 b 71.30 a 0.00 b 0.00 b 453.31
1981 0.00 a 0.00 b 0.00 8.50 4.28 b 132.50 212.00 236.50 118.97 a 4.13 a 0.00 b 0.00 a 716.87
1982 0.00 0.00 0.00 0.00 25.00 26.00 109.00 127.50 42.50 0.00 0.00 b 0.00 330.00
1983 0.00 0.00 a 0.00 0.00 53.00 19.50 52.18 a 130.50 94.00 0.00 0.00 0.00 349.18
1984 0.00 0.00 0.00 0.00 30.50 25.50 223.50 193.00 122.00 0.00 0.00 0.00 594.50
1985 0.00 0.00 0.00 3.50 0.00 139.00 221.50 122.00 15.00 10.00 0.00 0.00 511.00
1986 0.00 0.00 0.00 0.00 23.00 61.00 65.50 202.00 55.50 0.00 0.00 0.00 407.00
1987 0.00 0.00 0.00 2.00 10.00 114.50 127.50 240.00 94.50 65.50 0.00 0.00 654.00
1988 0.00 0.00 0.00 0.00 3.00 85.50 318.50 261.00 140.00 28.50 0.00 0.00 836.50
1989 0.00 0.00 0.00 16.00 6.50 51.00 221.50 121.00 48.00 0.00 0.00 b 0.00 464.00
1990 0.00 0.00 0.00 0.00 4.50 61.50 261.50 186.00 71.00 8.50 0.00 0.00 593.00
1991 0.00 0.00 0.00 0.00 0.00 22.00 219.50 156.00 158.50 79.50 0.00 a 0.00 635.50
1992 0.00 0.00 0.00 0.00 44.50 100.00 135.50 244.00 74.50 15.00 0.00 0.00 613.50
1993 0.00 0.00 0.00 0.00 1.00 64.50 98.00 142.00 107.50 18.00 0.00 0.00 431.00
1994 0.00 0.00 0.00 0.00 5.00 103.00 286.50 272.50 89.50 0.00 0.00 0.00 z 756.50
1995 0.00 0.00 0.00 0.00 a 1.50 71.00 137.00 184.50 106.00 2.00 0.00 0.00 502.00
1996 0.00 0.00 0.00 0.00 16.50 84.00 280.50 239.00 59.50 39.50 0.00 0.00 719.00
1997 0.00 0.00 0.00 0.00 46.50 52.00 0.00 z 235.00 108.00 8.50 0.00 0.00 450.00
1998 0.00 0.00 0.00 0.50 0.00 4.00 168.50 185.00 60.00 0.00 0.00 0.00 418.00
1999 0.00 0.00 0.00 0.00 11.50 32.00 f 115.00 27.00 106.00 23.50 0.00 0.00 283.00
2000 0.00 0.00 a 0.00 0.00 52.00 183.00 188.00 256.00 78.50 21.00 0.00 0.00 778.50
2001 0.00 0.00 c 0.00 1.00 109.50 134.50 225.00 311.03 a 128.00 50.50 0.00 0.00 959.53
2002 0.00 0.00 0.00 0.00 11.50 125.50 331.00 228.50 145.00 6.00 0.00 0.00 847.50
2003 0.00 0.00 0.00 0.00 52.00 118.00 337.50 204.50 205.00 31.00 0.00 0.00 948.00
2004 0.00 0.00 0.50 4.50 14.00 123.50 294.50 284.50 138.50 9.00 0.00 0.00 869.00
2005 0.00 0.00 0.00 0.00 7.00 14.50 273.00 207.00 15.50 3.00 0.00 0.00 520.00
2006 0.00 0.00 0.00 0.00 29.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 29.50
Period of Record Statistics
MEAN 0.00 0.00 0.01 1.03 15.40 67.25 200.21 186.44 88.40 13.34 0.00 0.00 584.32
S.D. 0.00 0.00 0.06 2.77 18.15 43.55 70.41 64.92 43.04 17.22 0.00 0.00 153.78
SKEW 0.00 0.00 8.43 3.43 2.43 0.63 0.36 -0.16 0.14 1.96 0.00 0.00 0.25
MAX 0.00 0.00 0.50 16.00 109.50 183.00 415.50 329.00 205.00 79.50 0.00 0.00 959.53
MIN 0.00 0.00 0.00 0.00 0.00 4.00 52.18 27.00 8.28 0.00 0.00 0.00 240.07
NO YRS 71 76 74 76 74 73 72 75 74 73 75 72 60