SAN FRANCISCO RICHMOND, CALIFORNIA

Monthly Total Heating Degree Days

(047767)

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
1948 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
1949 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
1950 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
1951 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
1952 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
1953 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
1954 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
1955 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
1956 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
1957 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
1958 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 221.00 i 0.00
1959 396.50 385.50 311.55 a 260.50 293.00 160.00 i 177.98 b 155.50 122.07 a 155.00 244.14 a 398.50 2900.24
1960 512.00 419.98 a 382.52 c 350.00 323.20 d 212.59 a 131.50 n 236.63 a 246.50 257.09 b 418.39 b 517.50 3876.40
1961 488.50 373.00 430.38 a 359.50 324.50 210.50 213.50 169.97 b 166.50 240.00 365.00 503.50 3844.85
1962 464.00 400.00 416.50 315.00 334.00 296.50 293.00 159.50 235.50 236.50 283.00 394.00 3827.50
1963 501.17 d 259.50 447.50 317.00 274.50 260.17 a 197.50 219.50 88.00 109.00 l 293.00 544.50 3402.34
1964 484.50 381.50 458.00 376.00 369.00 259.00 241.50 158.00 130.00 173.50 376.50 392.50 3800.00
1965 423.09 d 394.00 387.00 349.50 395.00 347.00 249.00 180.50 157.50 120.50 245.00 526.50 3774.59
1966 349.50 332.00 360.00 221.00 271.50 195.00 212.87 a 214.00 128.50 121.00 272.50 384.29 b 3062.16
1967 380.00 272.00 319.50 416.00 231.50 282.00 158.50 187.50 93.00 125.50 160.00 401.50 3027.00
1968 0.00 z 133.00 l 352.50 349.00 339.50 261.00 261.50 127.50 128.00 227.50 323.00 500.50 2870.00
1969 425.50 g 428.00 387.50 368.00 278.00 203.00 231.50 228.00 194.00 136.00 g 232.50 316.00 2866.50
1970 382.50 257.50 318.78 a 429.00 322.50 281.50 267.00 278.00 171.50 332.39 d 237.50 i 470.34 b 3511.02
1971 451.50 410.85 b 325.00 g 407.50 368.00 270.00 305.00 181.50 143.50 272.05 b 354.50 528.50 3692.90
1972 543.50 373.00 384.00 360.50 343.50 285.00 166.50 164.00 164.00 181.02 c 328.50 508.50 3802.02
1973 492.50 330.00 410.50 299.00 325.50 209.50 233.00 266.00 189.00 214.00 376.50 431.00 3776.50
1974 463.50 421.00 300.50 f 354.50 359.00 248.50 180.50 174.63 a 186.50 155.00 306.50 462.50 3312.13
1975 493.00 389.00 394.00 430.50 309.50 282.50 233.53 a 220.50 211.50 268.50 354.50 424.18 a 4011.22
1976 428.50 394.00 445.00 383.50 286.00 220.00 188.50 99.50 125.00 158.00 224.00 410.00 3362.00
1977 484.50 338.50 416.00 337.50 310.50 251.00 207.00 120.00 141.67 c 213.00 327.00 374.50 3521.17
1978 344.21 b 307.00 225.00 272.50 233.50 221.38 a 203.50 186.52 a 98.79 a 216.00 343.50 485.15 a 3137.05
1979 502.50 361.08 d 327.50 293.00 252.50 213.50 182.00 150.87 a 61.00 88.00 225.00 352.00 3008.95
1980 272.50 i 269.50 282.50 291.43 b 278.00 187.00 142.00 162.50 141.43 b 153.00 h 264.00 322.00 2340.36
1981 376.00 282.50 349.50 328.45 a 286.50 168.50 0.00 z 179.50 175.00 187.55 a 237.50 318.50 2889.50
1982 0.00 z 321.00 375.50 295.00 296.00 107.00 r 76.00 q 117.00 j 166.50 0.00 z 312.41 a 412.00 2178.41
1983 453.50 307.00 325.50 292.00 263.00 0.00 z 144.50 56.32 a 30.00 96.50 279.50 157.00 p 2247.82
1984 2.50 z 350.00 256.00 349.50 283.00 266.00 153.00 154.00 90.00 218.50 357.00 524.00 3001.00
1985 0.00 z 0.00 z 463.50 280.86 a 105.00 q 215.50 141.57 a 0.00 z 0.00 z 0.00 z 199.50 s 524.00 1625.43
1986 348.00 285.00 263.50 362.00 344.00 198.62 a 196.00 219.50 180.00 a 0.00 z 0.00 z 445.00 2841.62
1987 497.50 360.00 367.00 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 1224.50
1988 0.00 z 0.00 z 0.00 z 0.00 z 288.00 184.50 189.50 141.00 119.00 l 105.00 m 304.00 460.50 1567.50
1989 514.00 111.00 s 374.50 231.00 248.50 188.50 200.50 158.00 167.00 190.50 247.00 429.00 2948.50
1990 427.50 432.00 376.50 260.00 272.50 166.00 132.50 98.00 102.50 199.00 308.00 371.00 k 2774.50
1991 468.50 281.50 430.00 345.50 349.00 284.50 222.50 144.00 199.00 212.50 276.50 440.00 3653.50
1992 479.50 269.50 243.50 196.50 183.50 148.50 102.50 69.50 m 149.00 108.50 279.50 490.50 2651.00
1993 502.50 382.50 303.00 276.00 130.00 p 0.00 z 173.00 0.00 z 0.00 z 71.00 m 237.00 240.00 q 1874.00
1994 247.50 k 258.00 i 0.00 z 328.00 317.00 200.50 h 269.50 0.00 z 177.00 220.00 425.50 510.50 2247.50
1995 365.50 283.00 311.50 352.50 311.50 278.00 137.00 184.00 148.00 173.00 265.50 362.00 3171.50
1996 379.50 315.00 296.00 278.50 275.00 294.00 254.00 230.50 211.50 228.50 283.00 333.50 3379.00
1997 424.00 322.00 352.50 337.00 209.00 237.00 215.00 90.50 36.50 165.50 213.50 385.00 2987.50
1998 362.18 a 352.00 337.00 340.00 284.00 208.00 231.50 209.50 169.14 a 209.50 337.00 503.00 3542.82
1999 468.00 423.63 a 451.50 389.50 410.75 a 321.50 260.83 b 198.00 205.00 183.93 a 270.52 a 391.78 b 3974.93
2000 413.50 322.11 a 364.80 c 287.68 b 305.00 252.93 a 254.00 208.98 b 126.43 b 224.48 b 375.00 a 281.00 h 3134.91
2001 451.16 c 419.44 c 349.02 b 428.79 a 284.17 a 245.36 b 237.15 a 216.00 230.36 b 224.15 e 214.50 h 326.00 f 3085.60
2002 466.50 319.00 410.50 339.50 353.40 a 283.97 a 239.70 c 210.36 c 194.50 244.68 c 162.50 g 343.87 d 3405.97
2003 294.50 b 255.00 g 335.26 d 296.50 f 298.38 c 234.23 d 254.00 112.50 110.36 b 219.07 a 252.50 f 391.78 b 2250.06
2004 432.34 c 379.79 c 207.50 g 0.00 z 282.32 c 202.50 f 196.16 b 137.00 126.67 c 215.34 c 294.81 d 394.45 b 2458.87
2005 344.00 h 221.00 f 203.50 k 191.00 n 227.91 d 199.00 f 229.73 c 186.00 h 226.55 a 257.82 a 240.00 a 352.50 1534.51
2006 376.00 339.50 d 450.57 b 325.50 294.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1786.07
Period of Record Statistics
MEAN 438.09 347.40 362.93 329.40 299.76 240.31 208.83 174.71 152.20 198.25 296.51 430.73 3508.65
S.D. 59.44 53.10 61.34 55.25 46.92 45.40 46.37 48.18 50.95 52.72 58.89 67.75 354.58
SKEW -0.42 -0.08 -0.27 -0.19 0.00 0.08 -0.17 -0.19 -0.37 -0.15 0.18 0.03 -0.22
MAX 543.50 432.00 463.50 430.50 410.75 347.00 305.00 278.00 246.50 332.39 425.50 544.50 4011.22
MIN 294.50 257.50 225.00 196.50 183.50 148.50 102.50 56.32 30.00 88.00 160.00 316.00 2987.50
NO YRS 39 41 42 43 45 39 43 40 43 38 40 41 19