SAN JOSE, CALIFORNIA

Monthly Total Heating Degree Days

(047821)

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 18.50 10.50 51.50 101.50 304.00 564.00 1050.00
1949 695.00 462.50 353.00 164.48 a 136.00 22.00 17.50 21.00 17.59 a 171.50 177.00 505.00 2742.57
1950 571.00 270.50 g 333.00 187.50 149.50 64.50 2.50 6.00 26.00 78.50 147.00 361.00 1926.50
1951 462.00 370.00 330.50 239.50 107.00 44.50 25.50 5.00 25.00 107.50 253.50 487.50 2457.50
1952 518.73 a 372.50 404.50 197.00 113.15 a 79.00 4.00 10.00 18.50 84.00 321.50 436.50 2559.38
1953 356.00 360.50 348.50 260.50 197.50 98.50 5.50 19.50 14.00 109.50 239.50 397.00 2406.50
1954 462.50 331.50 412.00 146.00 104.50 81.00 5.50 24.50 35.50 111.50 283.50 485.00 2483.00
1955 579.00 422.50 321.00 357.00 154.00 62.50 36.00 20.00 36.50 103.50 326.00 400.50 2818.50
1956 409.00 464.00 339.00 240.50 114.50 50.00 11.00 8.50 7.24 a 145.50 263.50 446.50 2499.24
1957 545.50 300.00 287.00 188.00 118.00 17.00 0.00 8.00 1.00 76.50 297.50 447.50 2286.00
1958 407.50 229.00 386.00 206.50 54.50 6.50 5.00 0.00 5.50 34.00 238.00 288.50 1861.00
1959 361.50 354.50 205.50 102.50 138.50 44.50 1.07 b 5.00 9.31 a 50.50 215.50 404.50 1892.88
1960 461.00 343.50 220.00 217.00 146.00 7.24 a 5.00 2.50 13.50 88.50 292.50 454.50 2251.24
1961 475.50 282.50 326.00 191.50 189.00 28.45 a 7.00 1.00 4.50 j 114.50 286.50 501.50 2403.45
1962 468.00 386.00 370.00 153.50 161.00 42.50 7.00 5.00 16.00 98.00 221.00 425.00 2353.00
1963 530.00 170.00 330.50 290.00 118.00 28.50 17.50 5.50 0.50 0.00 z 0.00 z 0.00 z 1490.50
1964 0.00 z 355.50 354.00 255.00 210.50 82.50 21.00 8.50 32.07 a 67.50 394.50 402.50 2183.57
1965 489.50 387.50 324.00 230.50 148.50 60.00 10.50 0.00 29.50 64.50 271.00 618.50 2634.00
1966 515.00 418.00 308.50 98.00 71.00 37.50 13.00 1.50 13.00 95.50 285.50 494.50 2351.00
1967 478.00 380.00 368.50 424.00 131.50 58.00 0.00 0.00 0.00 65.00 222.00 540.00 2667.00
1968 565.50 247.50 268.50 188.50 147.00 28.00 0.50 2.50 17.50 129.50 296.50 535.00 2426.50
1969 544.00 432.50 347.00 259.50 68.50 26.00 0.00 0.50 8.00 111.50 303.00 363.50 2464.00
1970 379.50 278.50 261.00 297.50 65.50 21.00 1.00 12.00 18.50 156.50 248.50 513.50 2253.00
1971 496.50 390.50 344.00 275.00 155.50 57.00 4.50 1.50 34.50 212.00 356.00 594.00 2921.00
1972 587.50 336.00 212.00 207.00 91.00 19.50 1.00 3.50 26.50 108.50 373.00 597.00 2562.50
1973 529.00 330.50 413.50 154.00 85.00 19.00 4.50 12.00 18.50 110.50 350.00 478.00 2504.50
1974 479.00 419.50 302.50 238.50 158.00 20.50 13.00 2.50 4.00 81.50 353.00 527.50 2599.50
1975 538.00 377.00 368.00 348.50 113.00 40.50 19.50 13.00 29.50 163.00 371.50 496.00 2877.50
1976 512.50 392.00 372.00 268.00 98.50 65.50 2.50 8.00 10.50 81.00 272.50 535.50 2618.50
1977 542.00 295.00 375.00 141.50 215.50 21.00 4.50 1.00 15.00 97.00 284.00 356.50 2348.00
1978 372.00 321.50 194.00 243.50 55.50 19.00 5.00 4.50 8.00 67.50 355.00 596.50 2242.00
1979 504.00 385.50 272.50 215.69 a 63.50 35.00 4.00 0.00 0.00 56.50 288.50 412.50 2237.69
1980 387.50 255.00 310.00 173.50 146.00 64.00 23.00 1.00 10.00 109.00 268.50 446.50 2194.00
1981 398.50 264.00 293.00 189.00 80.00 1.50 3.50 6.00 5.50 137.50 199.50 352.50 1930.50
1982 557.00 260.50 0.00 z 216.50 100.50 71.50 9.50 2.00 20.00 103.00 395.50 491.00 2227.00
1983 505.50 289.00 282.00 244.50 113.50 12.50 7.00 0.00 2.00 45.00 300.00 338.00 2139.00
1984 443.00 349.50 205.50 254.50 69.00 22.00 1.00 3.00 4.50 0.00 z 369.00 566.50 2287.50
1985 603.00 351.50 423.00 121.50 97.00 9.00 0.00 0.00 17.50 119.50 383.50 545.00 2670.50
1986 324.00 240.50 175.50 172.50 85.00 2.50 1.50 0.00 37.76 a 48.00 252.50 462.00 1801.76
1987 492.00 315.50 258.00 79.00 65.00 7.50 7.00 1.00 1.00 28.00 275.50 446.00 1975.50
1988 426.50 283.00 197.50 137.50 118.50 30.50 0.50 1.00 3.00 61.50 257.00 493.50 2010.00
1989 534.00 431.00 223.00 89.00 81.50 20.00 4.00 1.00 11.50 102.50 281.00 488.50 2267.00
1990 449.50 421.50 265.00 84.50 89.50 10.00 0.00 0.00 0.00 39.50 307.00 655.00 2321.50
1991 474.50 226.50 389.00 218.50 136.50 52.00 0.00 2.50 1.50 75.00 236.50 471.00 2283.50
1992 516.50 241.00 203.50 72.00 7.50 10.00 0.00 0.00 z 1.50 19.00 252.00 516.50 1839.50
1993 502.50 364.50 170.00 148.50 47.50 22.00 0.00 0.00 7.00 32.50 304.00 488.00 2086.50
1994 443.00 387.50 196.00 167.00 82.50 12.00 0.00 0.00 1.50 96.50 443.50 540.00 2369.50
1995 337.00 255.50 296.50 172.50 99.00 42.50 0.00 0.00 1.50 38.00 153.00 338.50 1734.00
1996 380.50 248.50 199.50 109.00 51.00 8.00 0.00 0.00 4.50 125.00 261.00 344.00 1731.00
1997 403.50 294.00 182.00 112.00 17.50 3.00 0.00 0.00 0.00 77.00 217.00 451.00 1757.00
1998 351.50 339.50 245.50 211.50 154.50 18.00 2.50 0.00 7.00 113.50 292.50 569.50 2305.50
1999 467.00 390.00 383.50 262.00 155.00 49.50 6.00 2.50 0.00 z 0.00 z 215.50 256.00 n 1931.00
2000 260.00 j 227.00 h 192.00 f 59.50 l 41.00 i 5.50 g 2.00 g 1.03 a 4.00 86.69 d 361.80 e 300.00 g 453.52
2001 491.19 b 367.23 b 183.42 a 230.00 c 14.39 c 3.33 c 1.66 c 1.03 a 2.31 d 31.00 a 210.50 401.50 1937.57
2002 489.00 272.00 292.00 155.50 109.00 11.00 0.00 2.50 3.50 85.50 206.50 376.50 2003.00
2003 284.00 322.00 228.00 252.50 96.50 27.00 3.00 0.00 7.00 39.00 346.50 402.00 2007.50
2004 405.98 e 351.50 136.00 95.00 f 75.00 15.50 1.00 0.00 24.00 130.00 303.00 405.00 1846.98
2005 463.00 271.00 206.00 212.00 71.50 27.50 0.00 0.00 26.50 76.50 221.00 331.50 1906.50
2006 396.50 305.00 424.46 e 230.50 56.50 8.79 a 4.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1421.75
Period of Record Statistics
MEAN 470.72 333.80 293.20 201.82 106.99 32.42 6.04 4.34 13.34 90.20 284.29 465.18 2292.53
S.D. 78.99 66.44 77.56 71.39 46.48 24.02 7.74 5.91 12.25 39.42 63.04 82.87 313.71
SKEW 0.00 -0.14 -0.12 0.45 0.18 0.81 1.80 1.78 0.96 0.50 0.15 0.05 -0.04
MAX 695.00 464.00 424.46 424.00 215.50 98.50 36.00 24.50 51.50 212.00 443.50 655.00 2921.00
MIN 284.00 170.00 136.00 72.00 7.50 1.50 0.00 0.00 0.00 19.00 147.00 288.50 1731.00
NO YRS 56 56 56 56 57 57 57 57 56 55 57 55 47