WATSONVILLE WATERWORKS, CALIFORNIA

Monthly Total Heating Degree Days

(049473)

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 221.43 c 134.69 b 163.89 c 207.04 c 381.67 c 636.05 c 1744.76
1949 741.79 c 521.11 a 414.88 a 263.50 253.34 b 170.50 189.10 a 60.00 p 117.93 a 273.50 213.33 c 540.43 a 3699.42
1950 661.91 d 430.50 d 397.83 d 293.65 d 327.10 b 210.58 d 165.91 d 134.33 d 110.17 a 162.20 c 170.56 c 291.00 f 3064.74
1951 521.12 b 405.44 c 423.09 d 370.20 e 271.80 c 124.50 m 123.00 l 177.50 127.24 a 163.78 a 326.79 b 538.50 3325.47
1952 590.00 426.50 485.00 302.00 231.50 251.25 b 130.72 a 180.12 b 105.50 198.92 a 349.44 c 480.50 b 3731.45
1953 395.50 422.00 429.00 382.50 291.92 a 201.67 c 161.00 132.50 98.57 b 217.52 a 306.00 457.00 3495.17
1954 556.00 327.00 448.00 281.00 251.00 171.21 a 116.50 184.45 a 134.50 211.00 279.00 506.50 3466.16
1955 600.50 452.50 404.50 418.00 270.50 210.00 206.50 223.00 198.00 221.00 371.50 435.50 4011.50
1956 502.00 549.00 0.00 z 352.00 248.00 170.50 185.50 181.00 102.41 a 245.50 265.00 446.00 3246.91
1957 605.50 333.50 371.00 294.50 229.50 16.50 x 24.50 z 147.50 81.50 161.50 0.00 z 447.00 2671.50
1958 468.00 308.50 360.00 g 268.50 187.00 85.50 122.00 64.00 60.00 125.50 302.50 319.50 2311.00
1959 408.00 338.00 f 284.00 239.00 273.00 160.50 119.50 109.00 109.00 136.40 a 281.00 414.00 2533.40
1960 552.00 430.50 331.50 276.00 237.50 146.00 134.00 167.00 151.00 240.00 384.81 d 494.50 3544.81
1961 453.50 383.00 443.50 296.00 291.00 141.00 107.50 85.00 137.50 226.00 391.50 519.50 3475.00
1962 518.50 422.00 497.50 261.00 264.00 160.00 189.50 112.00 200.50 160.00 302.00 405.00 3492.00
1963 568.00 240.00 423.00 371.00 260.50 203.00 139.00 157.00 70.50 158.00 367.50 507.00 3464.50
1964 520.00 423.00 468.50 362.50 341.00 192.00 154.00 145.50 187.50 152.00 381.00 414.00 3741.00
1965 459.00 395.50 402.50 282.00 284.00 247.50 156.00 69.00 158.00 119.00 302.00 589.00 3463.50
1966 545.00 463.50 398.50 227.50 260.00 156.00 148.00 135.00 98.00 168.00 294.50 490.00 3384.00
1967 477.50 374.00 408.50 467.00 227.50 236.50 116.00 114.00 46.00 123.00 231.00 544.00 3365.00
1968 521.00 278.00 321.00 298.00 261.00 144.00 125.00 95.50 86.50 201.50 313.00 566.00 3210.50
1969 522.00 487.50 407.50 346.50 235.00 138.00 143.50 143.50 124.00 199.43 a 255.00 408.50 3410.43
1970 403.50 322.50 318.50 379.50 227.50 175.50 154.00 160.50 123.00 239.00 301.50 541.00 3346.00
1971 504.00 442.00 416.50 372.50 315.50 194.00 143.00 73.00 97.00 313.50 387.00 611.00 3869.00
1972 562.50 363.00 320.50 313.00 232.00 181.50 73.00 80.00 109.00 157.00 391.50 574.00 3357.00
1973 536.50 337.00 461.00 277.00 227.50 118.00 153.50 146.50 136.00 217.50 388.00 482.50 3481.00
1974 523.00 453.00 386.00 341.50 300.00 161.00 106.00 105.00 120.50 168.00 339.50 523.50 3527.00
1975 482.00 402.50 431.50 434.50 262.00 198.50 144.50 133.50 142.00 244.50 381.00 472.00 3728.50
1976 458.50 410.50 422.50 352.50 227.50 144.00 94.00 36.50 95.00 134.50 216.50 444.50 3036.50
1977 479.00 305.50 449.50 301.61 b 304.50 168.00 129.00 80.00 105.00 176.50 273.50 348.00 3120.11
1978 374.50 340.00 216.50 307.50 173.50 138.00 99.00 59.00 66.00 175.00 379.50 561.50 2890.00
1979 503.00 363.00 g 191.00 o 260.00 170.00 0.00 z 87.00 71.50 23.50 125.50 338.50 429.00 2008.00
1980 385.00 291.50 338.00 257.00 264.50 151.00 57.00 104.00 101.00 15.00 w 278.00 364.50 2591.50
1981 376.00 311.50 359.00 265.00 186.00 56.00 125.50 59.50 95.50 210.50 233.57 b 397.50 2675.57
1982 575.50 320.00 382.00 257.50 0.00 z 156.50 80.00 47.00 58.00 136.50 340.50 467.50 2821.00
1983 446.00 308.50 326.00 284.50 168.00 82.50 34.50 7.50 13.00 65.50 316.50 398.50 2451.00
1984 439.50 376.00 253.50 262.00 100.50 126.00 22.50 26.50 12.50 181.00 374.00 531.00 2705.00
1985 526.00 369.00 441.00 189.50 202.00 82.00 56.50 77.50 80.50 215.00 406.50 450.00 3095.50
1986 308.50 284.00 236.50 250.00 205.50 106.00 114.50 96.00 156.00 149.00 258.50 449.00 2613.50
1987 523.00 335.50 360.50 175.00 166.00 141.00 121.00 87.00 81.50 128.50 315.50 510.00 2944.50
1988 466.50 326.00 300.00 243.00 222.50 145.50 103.50 86.50 144.50 215.50 335.00 517.00 3105.50
1989 550.50 494.00 323.50 213.50 229.00 113.00 105.00 140.50 135.00 187.00 264.00 421.50 3176.50
1990 479.50 473.50 376.50 194.00 206.00 102.50 79.50 73.00 70.50 175.00 368.50 657.50 3256.00
1991 556.50 326.50 505.00 352.00 342.50 287.00 188.00 131.50 178.50 259.00 355.00 493.50 3975.00
1992 489.50 297.50 300.00 129.50 122.00 106.00 31.50 43.00 79.50 76.00 267.50 510.50 2452.50
1993 502.50 395.00 256.00 239.00 139.00 71.50 96.50 44.00 100.50 104.00 319.50 473.00 2740.50
1994 437.50 410.50 300.50 256.00 215.50 135.00 169.00 94.50 95.50 188.50 465.50 531.00 3299.00
1995 372.50 254.50 326.00 281.50 243.50 123.50 31.00 53.00 70.00 128.50 179.50 381.00 2444.50
1996 414.50 279.50 304.00 181.50 148.50 136.00 81.50 113.00 122.00 216.00 295.50 386.00 2678.00
1997 413.50 347.50 284.00 196.00 82.00 94.00 89.50 21.50 16.00 162.50 246.50 463.00 2416.00
1998 394.00 390.00 331.50 309.00 242.00 0.00 z 88.50 60.00 74.50 210.50 347.50 275.50 q 2447.50
1999 137.00 v 285.50 j 265.50 m 204.00 n 111.00 s 94.00 p 63.50 p 42.50 o 0.00 z 74.00 s 119.00 s 331.00 h 0.00
2000 379.50 f 316.00 379.46 d 213.00 154.00 108.50 0.00 z 89.50 62.50 187.50 422.50 381.50 2314.46
2001 521.83 a 404.00 312.50 380.50 145.50 74.00 120.00 107.50 133.00 152.50 272.50 0.00 z 2623.83
2002 543.00 351.00 398.00 294.00 261.00 138.50 120.50 115.50 96.50 202.50 222.50 428.50 3171.50
2003 296.00 370.50 335.50 354.00 202.50 130.00 79.00 22.00 56.50 114.00 384.50 431.50 2776.00
2004 490.50 416.50 205.00 253.50 173.00 109.50 95.00 52.00 75.50 217.00 343.50 436.50 2867.50
2005 440.00 296.00 272.00 269.00 145.50 117.50 87.50 99.50 145.00 177.50 226.00 380.00 2655.50
2006 446.00 340.50 479.50 303.50 172.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1741.50
Period of Record Statistics
MEAN 489.41 373.35 367.91 291.14 226.33 149.37 118.35 101.58 104.19 180.02 316.15 474.18 3188.59
S.D. 81.28 69.03 73.84 67.52 58.69 48.80 44.89 47.80 43.43 48.46 64.42 73.17 434.75
SKEW 0.18 0.35 -0.20 0.22 -0.26 0.53 0.00 0.21 0.02 0.08 -0.17 0.30 -0.15
MAX 741.79 549.00 505.00 467.00 342.50 287.00 221.43 223.00 200.50 313.50 465.50 657.50 4011.50
MIN 296.00 240.00 205.00 129.50 82.00 56.00 22.50 7.50 12.50 65.50 170.56 319.50 2416.00
NO YRS 56 55 54 57 56 52 54 56 57 56 56 54 43