SAINT HELENA, CALIFORNIA

Monthly Total Cooling Degree Days

(047643)

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 z 0.00 i 0.00 8.00 54.50 69.50 224.00 129.50 23.50 2.00 0.00 0.00 511.00
1932 0.00 0.00 0.00 c 0.00 48.50 112.50 129.00 g 151.00 111.00 7.00 22.24 a 0.00 c 452.24
1933 0.00 0.00 0.00 5.50 24.28 a 44.00 173.00 163.00 34.50 55.00 0.00 0.00 499.28
1934 0.50 0.00 1.50 0.00 38.50 64.00 126.50 140.00 92.00 26.50 0.00 0.00 489.50
1935 0.00 0.00 0.00 1.50 26.00 143.00 121.00 131.00 59.50 7.50 0.50 0.00 490.00
1936 0.00 0.00 1.50 2.07 a 39.50 103.50 172.00 190.00 96.50 33.50 0.00 0.00 638.57
1937 0.00 0.00 0.00 0.00 37.00 102.41 a 174.00 167.00 81.50 20.00 0.00 0.00 581.91
1938 0.00 0.00 0.00 6.50 31.50 99.00 177.00 123.00 103.00 3.00 0.00 0.00 543.00
1939 0.00 0.00 0.00 10.50 56.00 106.50 201.00 148.50 168.00 29.50 0.00 0.00 720.00
1940 0.00 0.00 0.00 4.00 42.50 139.50 141.50 146.00 31.50 33.00 0.00 0.00 538.00
1941 0.00 0.00 0.00 0.00 35.00 77.50 212.50 138.00 87.00 32.00 1.50 0.00 583.50
1942 0.00 0.00 0.00 0.00 24.50 89.00 192.00 152.00 45.00 13.00 0.00 0.00 515.50
1943 0.00 0.00 0.00 0.00 69.00 47.50 159.50 136.00 124.00 24.00 0.00 0.00 560.00
1944 0.00 0.00 0.00 0.00 28.00 69.00 132.50 155.50 144.50 11.00 0.00 0.00 540.50
1945 0.00 0.00 0.00 18.00 1.55 a 155.00 235.00 143.50 122.50 25.50 7.50 0.00 708.55
1946 0.00 0.00 b 0.00 8.50 7.00 67.50 199.00 153.50 84.50 29.00 0.00 0.00 549.00
1947 0.00 0.00 0.00 22.50 52.00 129.00 132.50 136.00 142.00 22.50 0.00 0.00 636.50
1948 0.00 0.00 0.00 0.00 3.00 82.50 150.00 120.50 99.50 7.50 0.00 0.00 463.00
1949 0.00 0.00 0.00 3.50 19.50 111.50 150.00 100.50 119.50 18.00 1.50 0.00 524.00
1950 0.00 0.00 0.00 9.50 58.00 78.50 215.50 233.00 121.00 22.50 12.50 0.00 750.50
1951 0.00 0.00 0.00 2.50 54.00 62.50 166.00 135.00 102.50 8.50 0.00 0.00 531.00
1952 0.00 0.00 6.50 0.00 58.00 31.00 221.50 167.00 149.50 32.50 0.00 0.00 c 666.00
1953 0.00 0.00 0.00 0.52 a 2.50 59.50 209.00 116.00 155.00 20.50 0.00 0.00 j 563.02
1954 0.00 0.00 0.00 16.00 17.16 c 113.04 b 158.00 i 85.50 69.00 6.50 0.00 0.00 307.20
1955 0.00 0.00 b 0.00 0.00 42.50 66.50 109.00 g 134.52 c 132.50 13.50 15.50 0.00 405.02
1956 0.00 0.00 0.00 0.00 a 24.28 a 100.71 b 152.00 g 131.50 92.50 8.50 0.00 0.00 357.50
1957 0.00 b 0.00 0.00 6.21 a 19.24 b 174.64 b 183.50 141.50 95.00 0.00 a 0.00 0.00 620.09
1958 0.00 0.00 0.00 5.00 21.00 96.00 180.50 261.43 a 202.50 54.77 a 0.50 0.00 821.70
1959 0.00 0.00 o 3.88 c 18.50 19.50 k 173.28 a 246.00 196.69 b 103.50 78.00 f 0.00 0.00 741.84
1960 0.00 0.00 d 3.50 7.50 22.50 184.50 227.50 177.39 d 102.32 b 16.10 e 0.50 0.00 741.81
1961 0.00 e 0.00 0.00 g 17.50 1.50 114.00 j 283.98 c 227.00 92.50 67.74 d 1.50 0.00 691.72
1962 7.00 0.00 0.00 10.00 5.50 94.00 127.00 162.50 67.00 13.50 1.00 0.00 487.50
1963 0.00 0.00 0.00 0.00 19.50 64.00 136.50 178.50 166.50 17.50 0.00 0.00 582.50
1964 0.00 0.00 0.00 6.00 4.00 80.50 192.50 190.00 109.50 58.50 0.00 0.00 641.00
1965 0.00 0.00 0.00 15.00 13.00 25.00 133.00 182.50 23.00 52.50 0.00 0.00 444.00
1966 0.00 0.00 2.50 24.00 16.00 157.00 113.00 216.50 112.00 32.00 7.00 0.00 680.00
1967 0.00 0.00 0.00 0.00 51.00 77.00 203.00 231.50 150.50 24.00 5.50 4.00 746.50
1968 0.00 0.00 0.50 13.00 30.50 146.50 186.00 146.50 144.50 13.00 0.00 0.00 680.50
1969 0.00 0.00 1.00 0.00 50.00 48.50 181.50 234.00 141.50 7.50 0.00 0.00 664.00
1970 0.00 0.00 1.50 0.00 77.00 84.00 194.50 121.00 140.00 14.00 0.00 0.00 632.00
1971 0.00 0.00 0.00 0.00 0.00 86.50 172.50 211.00 153.50 30.50 0.00 0.00 654.00
1972 0.00 0.00 1.00 0.00 37.00 118.50 215.50 163.00 46.00 11.00 0.00 0.00 592.00
1973 0.00 0.00 0.00 1.50 62.50 183.50 175.00 115.50 94.50 15.00 0.00 0.00 647.50
1974 0.00 0.00 0.00 1.50 35.50 130.00 211.50 183.50 95.50 47.00 0.00 0.00 704.50
1975 0.00 0.00 0.00 0.00 77.00 85.50 147.50 149.50 91.00 3.50 0.00 0.00 554.00
1976 0.00 0.00 0.00 0.00 52.50 179.00 182.50 123.00 93.00 40.00 0.00 0.00 670.00
1977 0.00 0.00 0.00 4.50 13.00 158.50 196.50 224.00 90.50 13.50 0.00 0.00 700.50
1978 0.00 0.00 0.00 0.00 69.50 108.00 205.00 163.50 112.50 72.00 0.00 0.00 730.50
1979 0.00 0.00 b 0.00 0.00 61.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 61.00
1980 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 9.50 0.00 c 9.50
1981 0.00 z 0.00 0.00 a 45.00 72.50 0.00 z 203.50 292.50 165.00 10.00 0.00 0.00 b 788.50
1982 0.00 0.00 0.00 7.00 40.50 48.50 154.00 0.00 z 122.00 25.00 0.00 0.00 397.00
1983 0.00 0.00 0.00 2.00 55.00 130.50 195.50 219.00 173.00 22.00 0.00 0.00 797.00
1984 2.14 b 0.00 1.00 8.50 132.50 137.50 282.50 203.50 0.00 z 18.00 0.00 z 0.00 z 785.64
1985 0.00 2.50 0.00 44.00 0.00 z 0.00 z 293.00 144.50 58.00 47.00 1.50 0.00 590.50
1986 0.00 z 0.00 0.00 z 8.50 0.00 z 140.00 182.00 190.00 56.50 27.50 0.00 0.00 604.50
1987 0.00 z 0.00 0.00 22.00 127.10 a 0.00 z 0.00 z 0.00 z 125.00 0.00 z 0.00 z 0.00 z 274.10
1988 0.00 z 0.00 z 0.00 z 16.50 61.50 147.50 0.00 z 202.50 136.50 49.00 0.00 0.00 613.50
1989 0.00 0.00 0.00 48.50 51.00 107.00 238.50 169.00 86.00 18.00 0.00 0.00 718.00
1990 0.00 0.00 0.00 25.00 0.00 z 147.00 240.00 219.00 137.00 39.00 0.00 0.00 807.00
1991 0.00 0.00 0.00 0.00 24.00 77.00 0.00 z 154.00 161.38 a 118.50 2.00 0.00 536.88
1992 0.00 0.00 0.00 13.00 118.50 111.50 240.00 0.00 z 152.50 64.00 3.50 0.00 703.00
1993 0.00 0.00 0.00 0.00 a 35.00 214.50 224.00 255.00 140.50 17.50 0.00 0.00 886.50
1994 0.00 0.00 0.00 4.50 37.50 148.00 137.00 218.00 117.50 24.00 0.00 0.00 686.50
1995 0.00 0.00 0.00 2.50 18.00 132.00 249.50 269.50 139.50 65.50 0.00 0.00 876.50
1996 0.00 0.00 3.00 23.00 76.50 169.00 334.50 293.50 109.50 67.00 0.00 0.00 1076.00
1997 0.00 0.00 7.50 17.00 150.50 179.00 243.00 238.00 220.50 30.00 9.50 0.00 1095.00
1998 0.00 0.00 0.00 20.50 0.00 z 48.50 0.00 z 242.50 167.50 4.00 0.00 0.00 483.00
1999 0.00 0.00 0.00 12.41 a 16.50 97.00 134.50 157.58 a 118.50 50.78 b 0.00 0.00 z 587.27
2000 0.00 a 0.00 3.62 a 19.44 c 94.60 b 179.00 156.55 a 206.50 158.79 a 17.00 0.00 0.00 835.51
2001 0.00 0.00 7.00 6.21 a 173.08 a 180.00 a 182.00 202.00 102.41 a 80.00 0.00 0.00 932.70
2002 0.00 0.00 2.00 16.00 32.50 158.00 208.00 180.50 144.50 40.00 3.00 0.00 784.50
2003 0.00 0.00 1.00 0.00 57.50 145.50 279.00 196.00 181.00 62.52 a 0.00 0.00 922.52
2004 0.00 0.00 h 32.50 31.00 32.50 126.50 g 166.00 233.50 201.00 e 30.00 0.00 0.00 726.50
2005 0.00 z 0.00 11.50 0.00 42.00 92.50 280.00 200.00 64.00 24.00 8.00 0.00 722.00
2006 0.00 0.00 0.00 6.50 53.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 60.00
Period of Record Statistics
MEAN 0.14 0.04 1.28 8.64 44.79 111.30 193.89 177.34 114.67 29.10 1.59 0.06 669.29
S.D. 0.88 0.30 4.26 11.02 34.63 44.42 47.18 46.30 42.69 22.22 3.98 0.48 147.68
SKEW 7.23 8.25 5.87 1.74 1.53 0.17 0.59 0.49 -0.03 1.37 3.21 8.19 0.92
MAX 7.00 2.50 32.50 48.50 173.08 214.50 334.50 293.50 220.50 118.50 22.24 4.00 1095.00
MIN 0.00 0.00 0.00 0.00 0.00 25.00 113.00 85.50 23.00 0.00 0.00 0.00 444.00
NO YRS 69 71 72 75 70 68 65 70 72 71 72 70 51