VACAVILLE, CALIFORNIA

Monthly Total Heating Degree Days

(049200)

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 16.50 0.00 31.00 91.34 c 396.72 a 723.50 1259.06
1949 836.00 567.50 398.87 a 109.00 66.65 a 6.50 1.50 0.53 b 4.50 158.00 249.50 639.38 c 3037.93
1950 629.54 e 393.00 373.50 136.00 96.50 17.00 0.00 3.00 13.50 91.50 244.50 463.00 2461.04
1951 608.50 414.00 340.00 236.50 95.87 d 8.50 0.00 0.50 3.00 97.00 256.50 j 631.50 2435.37
1952 689.00 454.50 447.00 184.00 81.00 50.00 0.00 0.00 9.00 74.00 405.60 e 608.50 3002.60
1953 463.00 402.00 365.50 224.00 146.22 a 34.00 0.00 6.00 3.00 109.00 359.50 493.00 2605.22
1954 573.50 458.50 469.50 138.00 23.50 30.00 0.00 7.00 6.00 106.50 424.00 695.50 2932.00
1955 737.50 477.50 361.50 341.00 75.50 17.00 0.00 a 0.00 12.50 65.50 392.50 511.50 2992.00
1956 567.00 529.50 365.50 229.50 82.50 4.00 4.00 0.00 2.00 160.00 329.00 642.50 2915.50
1957 686.00 394.50 323.50 166.50 81.50 0.00 0.00 2.50 0.50 140.00 403.00 622.50 2820.50
1958 598.54 e 337.08 b 347.00 h 179.50 27.50 3.00 0.00 0.00 1.50 20.50 275.50 425.50 1868.62
1959 473.00 417.00 217.00 74.48 a 65.00 0.00 0.00 1.50 11.00 29.00 279.00 542.00 2108.98
1960 591.50 409.00 264.00 190.00 81.00 0.00 0.00 0.00 7.00 76.50 392.50 610.00 2621.50
1961 709.00 354.50 349.00 181.00 109.65 d 4.00 0.00 0.00 6.00 96.00 j 375.00 632.00 2720.15
1962 666.00 488.50 425.00 107.00 85.50 7.00 0.00 0.00 2.00 113.50 307.50 604.50 2806.50
1963 721.50 264.50 422.00 366.50 122.50 7.00 2.50 0.00 0.00 114.00 443.00 789.50 3253.00
1964 650.00 383.00 333.50 192.00 105.50 26.50 1.00 0.00 31.00 49.00 405.00 435.00 2611.50
1965 595.00 383.50 332.50 227.50 49.00 20.50 0.00 0.00 22.00 18.00 303.50 727.00 2678.50
1966 578.50 467.00 310.00 98.28 a 44.00 18.00 0.00 0.50 7.00 73.50 353.00 580.00 2529.78
1967 578.00 444.00 443.00 496.50 116.50 42.50 0.00 0.00 0.00 50.50 290.50 625.50 3087.00
1968 668.50 311.00 321.50 185.50 119.00 5.50 0.00 5.50 6.50 132.50 378.00 675.00 2808.50
1969 673.00 496.00 382.00 237.50 34.50 10.50 0.00 0.00 3.50 147.50 353.50 499.50 2837.50
1970 465.00 359.00 292.00 297.00 65.00 3.00 0.00 0.00 6.00 151.50 313.50 597.50 2549.50
1971 591.50 470.00 402.50 285.00 140.00 23.50 0.00 0.00 31.00 226.50 430.50 722.50 3323.00
1972 764.00 425.00 239.00 227.50 84.50 16.00 1.50 0.00 18.50 129.00 473.00 715.00 3093.00
1973 633.50 388.00 420.50 142.50 50.12 a 8.00 0.50 0.00 7.76 a 132.00 391.50 547.50 2721.88
1974 580.00 465.00 384.00 267.50 90.00 0.50 1.00 0.00 3.00 54.25 a 391.00 597.00 2833.25
1975 654.00 439.00 388.00 366.72 a 86.50 7.50 12.40 a 0.00 a 0.00 153.50 400.56 c 582.00 3090.18
1976 562.00 427.00 372.50 277.50 28.50 24.50 0.00 1.50 6.67 c 75.00 296.50 572.00 2643.67
1977 681.50 361.50 394.98 b 105.50 186.50 6.50 0.50 0.00 13.50 69.50 300.00 464.00 2583.98
1978 481.00 377.00 242.50 0.00 z 41.50 1.00 1.00 1.50 8.50 78.00 0.00 z 701.00 1933.00
1979 612.50 467.00 350.00 245.00 54.00 9.00 7.00 0.00 b 0.50 106.95 a 405.00 a 542.00 2798.95
1980 555.00 356.00 351.00 206.00 110.57 a 49.14 a 0.00 z 0.50 0.00 z 108.50 327.50 551.50 2615.70
1981 531.50 385.50 368.38 a 197.00 59.50 1.61 b 0.00 0.00 6.00 149.50 286.03 a 511.50 2496.52
1982 707.00 409.50 439.50 272.50 58.00 47.00 0.50 0.00 17.00 89.50 483.62 a 577.50 3101.62
1983 636.00 365.00 346.00 299.00 105.50 4.50 2.00 0.00 0.50 25.00 376.00 485.50 2645.00
1984 567.50 458.50 247.00 235.50 36.00 11.50 0.00 0.00 2.00 150.00 393.00 634.00 2735.00
1985 722.00 396.50 0.00 z 0.00 z 0.00 z 10.50 0.00 0.00 26.50 105.00 451.50 0.00 z 1712.00
1986 476.00 304.50 217.00 0.00 z 74.00 0.00 d 0.00 z 0.00 73.50 51.50 261.00 589.50 2047.00
1987 592.50 371.00 355.50 91.00 60.50 1.50 0.00 1.00 2.50 28.00 354.50 569.00 2427.00
1988 566.50 380.50 262.00 0.00 z 0.00 z 0.00 z 0.00 i 0.00 4.00 36.34 b 0.00 z 581.00 1830.34
1989 616.00 488.50 315.00 111.00 55.50 2.00 0.00 0.00 11.50 97.00 305.50 0.00 z 2002.00
1990 568.00 491.00 0.00 z 68.00 65.50 3.50 0.00 0.00 0.00 27.00 320.50 695.50 2239.00
1991 527.50 263.00 464.50 190.00 108.50 7.50 0.00 2.00 0.00 74.00 269.00 564.50 2470.50
1992 652.50 302.50 251.50 88.00 0.00 4.00 0.00 0.00 0.00 27.50 318.00 661.50 2305.50
1993 645.00 481.00 239.50 172.50 33.50 21.00 0.00 0.00 6.50 28.50 361.00 627.00 2615.50
1994 555.00 456.00 257.50 144.50 68.50 5.00 0.00 0.00 1.50 0.00 z 478.00 659.00 2625.00
1995 440.00 346.50 366.00 172.50 86.00 12.50 0.00 0.00 0.00 30.00 153.00 432.50 2039.00
1996 513.00 332.50 244.50 143.50 29.00 2.00 0.00 0.00 0.00 98.50 288.50 446.00 2097.50
1997 508.50 314.50 193.00 90.50 9.00 0.00 0.00 0.00 0.00 38.50 254.00 542.50 1950.50
1998 475.50 421.50 270.00 222.50 166.00 7.00 0.00 0.00 z 8.00 71.50 337.00 626.50 2605.50
1999 588.00 425.50 391.00 203.28 a 53.98 b 22.00 1.00 0.00 0.00 31.00 a 272.00 481.00 2468.76
2000 469.13 a 388.00 268.67 a 104.50 53.50 4.00 2.00 1.11 c 3.10 a 112.93 c 455.56 c 530.62 a 2393.11
2001 571.43 a 439.00 211.12 b 233.65 d 0.55 c 1.07 b 0.00 d 0.00 a 0.00 b 25.83 a 259.66 a 509.36 b 2251.68
2002 596.00 362.50 356.50 168.00 69.00 0.00 0.00 0.00 1.00 79.00 278.50 452.00 2362.50
2003 425.00 372.00 215.50 280.50 69.00 0.00 0.00 0.00 0.00 22.00 f 366.50 472.50 2201.00
2004 547.50 394.50 118.50 123.50 18.48 e 0.00 0.00 e 0.00 7.00 130.50 354.00 535.00 2228.98
2005 587.00 310.00 252.50 176.50 49.50 16.00 0.00 0.00 0.60 e 52.50 230.00 424.46 e 2099.06
2006 474.50 351.50 469.50 198.00 20.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1513.50
Period of Record Statistics
MEAN 593.64 403.30 330.94 198.27 71.34 11.51 1.00 0.61 7.88 86.57 345.38 578.15 2646.24
S.D. 87.01 64.26 80.68 84.06 39.35 13.10 2.92 1.48 12.06 46.89 71.18 89.11 337.62
SKEW 0.24 0.04 -0.29 0.95 0.58 1.54 4.08 3.03 3.30 0.45 -0.10 0.11 -0.11
MAX 836.00 567.50 469.50 496.50 186.50 50.00 16.50 7.00 73.50 226.50 483.62 789.50 3323.00
MIN 425.00 263.00 118.50 68.00 0.00 0.00 0.00 0.00 0.00 18.00 153.00 424.46 1950.50
NO YRS 58 58 55 54 56 56 55 57 57 55 55 56 44