TRACY CARBONA, CALIFORNIA

Monthly Total Heating Degree Days

(048999)

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
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 131.50 233.00 636.00 1000.50
1950 676.50 403.41 a 356.50 101.00 79.50 18.50 0.00 0.00 a 4.50 80.00 197.00 403.00 e 2319.91
1951 598.50 421.04 a 341.00 168.50 89.50 10.00 2.14 b 0.52 a 3.10 a 71.82 a 332.50 611.50 2650.11
1952 646.50 474.00 455.00 190.50 49.50 25.50 g 0.00 2.50 15.50 66.50 446.00 553.50 2899.50
1953 467.50 427.78 a 381.00 196.00 137.50 34.50 0.00 0.00 1.00 119.50 323.50 530.21 b 2618.48
1954 557.50 451.00 425.00 116.50 39.00 37.00 0.00 3.50 5.50 114.00 415.50 677.50 2842.00
1955 752.50 515.00 370.00 312.00 99.00 19.00 3.00 0.00 9.00 55.50 389.00 484.50 3008.50
1956 544.00 562.00 346.50 210.50 69.50 16.50 0.00 1.00 0.00 127.50 371.00 620.00 e 2868.50
1957 695.00 386.00 293.50 171.50 85.00 2.00 0.00 0.50 2.00 109.00 379.00 643.00 2766.50
1958 622.50 346.50 367.50 f 203.00 39.00 13.50 2.50 0.00 5.00 46.50 282.50 457.50 2018.50
1959 500.00 469.00 210.50 56.50 64.50 4.00 0.00 2.58 a 15.00 54.50 344.50 586.00 2307.08
1960 589.50 415.00 237.00 159.00 78.00 0.00 0.00 0.00 1.50 84.00 371.50 633.00 2568.50
1961 704.50 335.00 323.00 139.50 93.00 4.50 0.00 0.00 14.50 114.00 406.50 644.50 2779.00
1962 742.50 485.50 423.00 115.00 103.00 10.00 0.00 0.00 7.00 117.50 300.00 630.00 2933.50
1963 740.50 241.50 374.50 309.50 82.50 5.50 2.50 3.50 2.00 81.00 414.00 764.50 3021.50
1964 590.00 427.00 350.00 187.50 129.50 26.00 0.50 0.00 30.50 46.50 433.50 462.23 c 2683.23
1965 611.00 416.37 a 319.00 243.00 63.00 20.00 f 0.00 0.00 24.00 24.11 d 317.50 750.50 2768.48
1966 604.00 457.00 299.50 79.00 24.00 18.00 2.00 0.00 3.00 100.50 276.50 573.00 2436.50
1967 591.50 432.50 315.68 a 387.00 89.00 39.50 0.00 0.00 0.00 26.50 248.00 668.00 2797.68
1968 693.50 328.50 256.00 87.50 85.50 3.00 0.00 2.21 c 0.50 81.50 348.46 d 655.65 a 2542.33
1969 624.50 510.50 364.00 166.55 a 38.50 5.50 0.00 c 0.00 2.00 130.50 301.11 c 498.07 a 2641.23
1970 481.50 345.50 275.50 262.00 0.00 z 5.00 0.00 0.00 1.00 157.67 b 306.50 581.50 2416.17
1971 603.50 480.50 378.00 247.00 130.50 23.00 0.00 0.00 15.00 173.50 345.50 659.50 3056.00
1972 751.00 391.00 167.00 152.50 63.00 7.00 0.00 1.00 0.50 39.00 k 0.00 z 733.50 2266.50
1973 631.00 377.00 413.00 0.00 z 36.50 2.00 0.00 0.50 1.50 88.50 350.50 543.50 2444.00
1974 568.50 441.00 305.00 205.50 73.00 0.00 4.00 0.00 0.00 42.00 349.00 588.50 2576.50
1975 655.50 427.00 405.00 367.50 95.77 c 0.00 x 0.50 i 6.00 0.00 g 154.50 418.00 600.00 3129.27
1976 599.50 431.00 359.50 253.00 47.50 34.50 0.00 5.88 b 1.00 56.00 295.50 607.50 2690.88
1977 701.00 370.00 383.50 106.50 199.50 9.00 0.00 0.00 12.50 73.50 273.50 452.00 2581.00
1978 484.00 394.50 210.00 234.50 41.50 1.00 1.50 1.50 12.50 55.28 a 429.00 723.00 2588.28
1979 624.00 469.00 336.00 217.50 51.50 7.00 0.50 0.00 0.00 a 76.00 379.50 559.50 2720.50
1980 527.50 361.50 387.00 189.00 129.00 47.50 3.00 0.00 14.00 106.50 317.00 575.50 2657.50
1981 534.00 349.50 372.00 206.38 a 61.50 6.00 0.00 0.00 3.50 148.00 279.00 486.00 2445.88
1982 712.00 379.50 417.50 262.50 69.50 44.00 7.50 5.00 27.50 89.50 474.50 578.50 3067.50
1983 681.50 390.00 359.50 272.00 111.00 3.50 17.00 13.50 4.00 16.00 349.00 270.50 m 2217.00
1984 408.50 j 321.50 i 223.00 219.00 46.00 5.50 0.00 0.00 0.50 203.00 445.86 a 0.00 z 1142.86
1985 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.50 0.53 b 2.07 a 53.50 104.50 423.62 a 718.50 1320.22
1986 446.92 a 326.00 225.00 180.50 68.50 2.00 0.00 0.00 45.52 a 47.50 133.50 j 576.50 1918.43
1987 615.50 382.00 327.00 66.50 55.50 0.00 z 0.00 z 0.00 0.00 z 0.00 z 0.00 z 0.00 z 1446.50
1988 0.00 z 333.50 218.00 156.50 83.00 24.50 0.00 0.50 21.50 69.50 345.50 613.50 1866.00
1989 668.00 491.00 320.50 123.00 30.50 2.00 1.00 0.00 11.00 103.00 302.00 677.00 2729.00
1990 575.00 514.00 318.00 95.50 62.52 a 6.50 0.00 11.00 0.00 39.50 186.50 m 312.00 q 1622.02
1991 572.50 275.00 244.00 o 192.50 100.50 13.50 0.00 1.50 0.00 90.50 97.00 q 153.00 w 1246.00
1992 373.00 o 321.00 236.63 a 80.00 0.00 6.50 0.00 0.00 0.00 38.50 154.00 q 123.50 x 682.63
1993 388.00 l 459.00 253.17 a 205.00 42.00 25.50 0.00 0.00 9.00 35.50 197.50 k 592.58 e 1621.74
1994 307.50 o 361.50 g 256.00 147.50 82.00 0.00 b 0.00 0.00 2.50 82.50 312.00 k 282.50 q 570.50
1995 440.72 a 248.00 i 346.00 201.00 108.00 36.00 1.00 0.00 0.00 20.00 m 87.50 n 457.00 1589.72
1996 331.50 l 341.87 c 179.50 m 170.00 36.50 2.00 0.00 0.00 2.50 141.50 150.00 n 154.00 s 694.37
1997 547.50 364.00 273.50 110.50 21.91 b 34.00 6.20 a 0.00 0.00 143.50 286.03 a 643.00 2430.15
1998 362.00 k 472.23 b 218.50 l 199.00 j 219.50 21.50 0.50 0.00 25.50 205.50 226.00 m 471.00 i 944.73
1999 538.50 f 335.00 i 337.50 h 241.15 d 76.95 c 30.00 a 0.50 0.50 0.54 b 67.00 184.00 l 315.50 n 416.64
2000 369.50 h 307.50 f 184.00 o 135.56 c 81.12 a 8.00 1.50 3.50 6.00 144.15 a 325.50 j 384.00 k 379.82
2001 459.50 i 355.00 g 159.50 j 282.32 b 0.50 1.03 a 0.00 0.00 2.68 b 71.50 248.00 h 364.50 k 358.03
2002 395.50 l 197.50 p 222.00 k 131.50 i 114.00 0.00 0.00 2.00 8.50 135.00 189.00 l 204.50 s 259.50
2003 290.50 l 238.50 n 188.00 g 309.00 98.00 1.50 0.00 0.00 0.00 e 20.00 221.50 m 395.00 j 428.50
2004 365.50 l 239.00 l 132.00 g 75.00 f 27.50 1.50 0.00 0.00 a 22.00 91.50 g 271.00 k 213.50 r 51.00
2005 331.50 n 188.50 m 213.00 i 177.00 g 70.94 e 24.50 0.00 z 0.00 17.50 69.00 192.00 j 347.00 h 181.94
2006 350.50 l 262.50 j 313.00 h 128.50 i 26.35 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 26.35
Period of Record Statistics
MEAN 609.09 408.69 322.86 189.82 74.54 13.85 1.08 1.26 8.65 91.14 346.16 596.31 2690.28
S.D. 84.17 67.94 69.29 76.04 41.64 13.38 2.72 2.63 11.55 45.43 64.89 86.77 209.65
SKEW -0.15 -0.09 -0.30 0.43 1.09 0.89 4.28 3.01 1.97 0.52 -0.05 -0.20 0.13
MAX 752.50 562.00 455.00 387.00 219.50 47.50 17.00 13.50 53.50 205.50 474.50 764.50 3067.50
MIN 440.72 241.50 167.00 56.50 0.00 0.00 0.00 0.00 0.00 16.00 197.00 403.00 2307.08
NO YRS 41 45 44 50 55 52 53 56 54 53 39 41 28