SHASTA DAM, CALIFORNIA

Monthly Total Heating Degree Days

(048135)

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 1.50 0.00 44.50 66.00 355.00 717.00 1184.00
1949 743.00 596.00 533.50 60.50 51.00 4.00 0.00 0.00 a 3.50 105.00 129.50 j 595.50 2692.00
1950 883.50 480.50 453.63 a 157.00 68.95 b 13.00 0.00 0.00 7.50 152.50 300.50 534.50 3051.58
1951 703.00 529.50 440.50 150.50 133.00 4.50 0.00 a 2.00 3.50 142.50 388.97 a 627.50 3125.47
1952 789.50 553.50 533.00 159.50 95.50 66.00 0.00 0.00 j 17.50 27.50 330.50 670.50 3243.00
1953 544.00 410.00 425.50 259.00 f 228.50 56.50 0.00 13.50 0.00 99.00 374.50 468.50 2620.00
1954 641.50 402.00 459.00 164.00 34.50 46.50 0.00 23.00 12.50 72.50 346.00 658.50 2860.00
1955 676.50 497.00 397.50 405.00 86.50 15.00 0.00 0.00 7.50 51.00 456.50 580.50 3173.00
1956 639.00 583.50 378.00 206.00 110.50 3.50 0.00 0.00 3.00 178.00 239.00 462.00 2802.50
1957 708.50 445.00 427.28 a 206.00 134.00 0.00 0.00 0.00 14.00 189.50 379.00 566.00 3069.28
1958 559.00 443.50 530.50 235.00 30.50 19.50 0.00 a 0.00 9.00 32.00 281.50 359.00 2499.50
1959 537.00 496.00 251.00 55.00 80.50 0.00 0.00 8.50 22.00 50.50 214.00 457.50 2172.00
1960 685.50 499.50 338.50 254.50 147.00 0.00 0.00 0.00 0.00 a 66.50 418.00 511.50 2921.00
1961 564.50 421.00 496.00 168.00 161.00 8.50 0.00 0.00 10.50 152.00 410.00 601.00 2992.50
1962 555.50 516.00 515.00 88.00 118.00 7.00 0.00 10.00 19.50 104.00 300.00 437.50 2670.50
1963 588.50 312.50 462.50 444.00 114.00 15.50 0.00 0.00 1.50 125.50 432.50 616.00 3112.50
1964 667.00 393.00 461.00 210.50 127.50 40.50 0.00 0.00 16.50 58.00 455.50 551.50 2981.00
1965 574.00 434.00 319.00 322.50 77.00 8.00 0.00 0.00 14.50 37.50 385.00 649.50 2821.00
1966 641.00 555.50 405.50 109.00 15.50 21.50 0.00 1.00 6.50 58.50 347.50 598.50 2760.00
1967 619.00 400.50 517.50 576.00 114.00 46.50 0.00 0.00 0.00 63.00 256.50 646.00 3239.00
1968 658.50 389.00 346.50 174.50 90.50 6.50 0.00 14.00 8.00 105.00 401.50 743.50 2937.50
1969 755.50 661.00 432.00 273.50 39.50 16.00 0.00 0.00 2.00 178.00 231.50 494.50 3083.50
1970 549.00 380.00 380.00 298.50 95.00 25.00 0.00 0.00 2.50 162.00 371.00 717.00 2980.00
1971 615.00 438.50 514.00 292.50 126.50 27.00 0.00 0.00 47.00 262.50 418.00 746.50 3487.50
1972 660.00 490.50 297.00 283.00 81.00 29.50 0.00 3.50 29.50 155.50 447.50 796.50 3273.50
1973 714.00 457.00 529.00 160.50 27.00 0.50 0.00 0.00 15.00 0.00 z 532.50 586.00 3021.50
1974 653.50 513.50 459.50 288.50 73.00 3.00 10.50 0.00 0.00 70.00 368.00 615.00 3054.50
1975 545.50 329.00 l 549.50 435.00 71.50 13.00 2.50 4.50 0.00 208.00 414.50 465.50 2709.50
1976 517.50 487.50 406.50 321.00 4.00 13.50 0.00 20.00 6.00 53.00 208.00 449.00 2486.00
1977 593.00 328.00 486.00 107.00 237.50 4.00 0.00 7.00 49.50 103.00 444.31 a 557.50 2916.81
1978 525.00 472.00 274.00 322.50 70.50 0.00 0.00 4.50 34.00 20.00 386.50 617.00 2726.00
1979 614.50 545.50 345.00 252.00 77.50 5.00 0.00 0.00 1.00 140.50 375.00 530.00 2886.00
1980 477.92 a 426.50 415.50 211.00 104.00 52.00 0.00 0.00 8.50 113.50 299.50 472.00 2580.42
1981 523.00 417.50 409.50 176.50 65.50 4.00 0.00 0.00 30.50 175.00 340.00 537.50 2679.00
1982 754.00 448.00 507.00 351.00 16.50 28.00 2.50 0.00 31.00 130.50 469.50 604.50 3342.50
1983 590.00 502.96 a 504.00 362.00 108.00 0.00 2.00 0.00 6.50 35.50 446.00 612.50 3169.46
1984 457.50 429.00 295.50 277.50 74.00 19.00 0.00 0.50 0.00 214.00 506.00 630.50 2903.50
1985 569.50 375.50 395.50 73.00 28.50 15.00 0.00 0.00 48.00 99.50 0.00 z 521.50 2126.00
1986 476.00 194.50 m 253.00 208.45 a 113.50 0.00 0.00 0.00 z 82.00 40.50 197.50 524.00 1894.95
1987 653.50 431.50 442.00 85.50 43.50 1.00 8.00 0.00 0.00 21.50 362.00 641.00 2689.50
1988 595.00 288.50 261.00 0.00 z 159.00 5.50 r 0.00 0.00 0.00 14.50 449.00 555.00 2322.00
1989 616.00 567.50 432.50 165.00 68.50 9.00 0.00 0.50 28.00 127.50 248.00 437.00 2699.50
1990 560.00 555.50 307.00 82.50 101.50 20.50 0.00 2.50 0.00 38.50 347.50 694.50 2710.00
1991 525.00 266.50 547.50 281.50 150.50 2.50 0.00 0.00 0.00 103.00 283.50 526.00 2686.00
1992 615.50 360.50 326.00 141.00 3.00 28.50 1.50 0.00 0.00 53.50 335.00 646.00 2510.50
1993 665.50 528.50 285.50 278.50 73.00 43.00 0.00 0.00 0.00 57.50 309.50 555.50 2796.50
1994 466.00 522.00 253.50 178.00 82.00 7.50 0.00 0.00 0.00 73.00 570.00 694.50 2846.50
1995 556.00 295.00 450.50 285.50 121.00 57.00 0.00 0.00 0.00 33.50 198.50 506.00 2503.00
1996 598.00 406.00 319.00 251.50 86.00 4.50 0.00 0.00 6.00 163.00 308.50 524.50 2667.00
1997 526.50 354.50 258.50 202.00 30.00 12.50 4.50 0.00 13.50 120.00 356.00 552.00 2430.00
1998 603.50 584.50 398.50 318.50 300.50 17.50 0.00 0.00 16.00 82.00 448.50 639.00 3408.50
1999 545.50 569.00 511.00 267.00 89.50 34.00 0.00 1.50 0.50 42.00 311.00 473.00 2844.00
2000 576.00 492.00 336.00 148.00 117.00 7.50 0.00 0.00 21.00 152.50 454.50 467.50 2772.00
2001 583.00 568.50 249.00 303.00 18.00 12.86 b 0.00 0.00 1.50 35.00 356.90 a 618.00 2745.75
2002 601.00 393.00 426.50 175.00 90.00 2.50 0.00 0.00 0.00 57.00 275.00 587.50 2607.50
2003 462.50 411.00 347.50 411.50 66.00 g 0.00 0.00 0.00 1.00 20.00 477.00 611.00 2741.50
2004 634.00 521.00 181.00 165.50 0.00 z 0.00 0.00 0.00 14.50 0.00 z 0.00 z 522.00 2038.00
2005 589.50 359.50 320.00 272.50 131.00 59.00 0.00 0.00 z 3.00 0.00 z 328.00 527.00 2589.50
2006 591.50 378.50 641.50 337.50 40.00 6.50 0.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1995.50
Period of Record Statistics
MEAN 605.72 456.85 404.09 235.51 91.70 16.89 0.57 2.12 12.41 96.20 362.65 574.24 2862.46
S.D. 84.20 86.59 99.73 106.81 56.69 17.85 1.86 5.00 16.45 58.99 86.12 89.37 274.52
SKEW 0.72 -0.06 -0.08 0.60 1.19 1.21 4.03 2.77 1.98 0.64 0.00 0.16 0.09
MAX 883.50 661.00 641.50 576.00 300.50 66.00 10.50 23.00 82.00 262.50 570.00 796.50 3487.50
MIN 457.50 266.50 181.00 55.00 3.00 0.00 0.00 0.00 0.00 14.50 197.50 359.00 2172.00
NO YRS 58 56 58 56 56 57 58 55 58 55 55 58 46