ORLAND, CALIFORNIA

Monthly Total Heating Degree Days

(046506)

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 6.50 0.00 37.00 94.50 374.00 720.00 1232.00
1949 795.50 551.00 448.00 79.00 40.00 0.50 0.00 0.00 3.00 149.50 267.50 689.50 3023.50
1950 797.50 402.50 384.00 110.50 69.50 11.50 0.00 0.00 6.50 131.50 295.50 521.50 2730.50
1951 680.50 505.50 348.50 170.50 91.00 2.50 0.00 1.00 4.00 115.00 393.50 655.50 2967.50
1952 739.00 483.00 473.50 154.50 55.00 35.00 0.00 0.00 9.00 32.00 427.00 647.00 3055.00
1953 477.50 420.00 375.00 229.44 c 135.00 27.50 0.00 5.17 a 4.00 119.50 359.00 511.00 2663.11
1954 629.00 446.00 448.00 145.50 30.50 30.50 0.00 2.00 11.50 110.50 398.00 707.50 2959.00
1955 726.50 506.00 372.00 349.00 67.50 4.00 0.00 0.00 9.50 64.00 422.50 556.00 3077.00
1956 594.00 576.00 367.00 215.00 89.50 1.50 0.00 0.00 0.50 140.50 340.00 619.00 2943.00
1957 703.50 391.50 352.00 179.00 85.50 0.00 0.00 0.50 11.00 176.50 412.50 627.23 a 2939.23
1958 621.00 379.00 481.00 206.00 32.00 4.50 0.00 0.00 3.50 i 30.00 308.50 418.00 2480.00
1959 525.50 466.00 242.50 48.00 71.00 0.00 0.00 3.50 11.00 36.88 b 273.50 569.00 2246.88
1960 661.50 458.50 306.50 203.00 95.00 0.00 a 0.00 0.00 0.00 b 53.50 h 379.50 597.50 2701.50
1961 668.50 397.50 427.50 173.28 a 104.50 0.00 0.00 0.00 7.50 125.00 373.00 622.00 2898.78
1962 624.00 484.50 460.00 98.00 77.50 2.88 d 0.00 0.00 12.50 106.00 320.50 555.00 2740.88
1963 708.00 269.50 424.00 350.00 78.00 3.50 0.00 2.00 0.50 103.50 426.50 717.50 3083.00
1964 654.50 404.00 405.00 196.50 112.50 29.50 0.00 0.00 a 18.00 72.00 460.00 517.50 2869.50
1965 644.50 450.00 344.00 251.00 71.00 12.00 0.00 1.50 28.50 80.50 419.00 821.00 3123.00
1966 721.50 585.00 384.50 95.00 12.00 17.00 0.00 3.00 5.00 81.50 332.00 594.50 2831.00
1967 589.50 418.00 443.00 476.00 91.50 42.00 0.00 0.00 0.00 42.00 251.50 594.00 2947.50
1968 693.00 325.00 298.50 139.50 64.00 4.50 0.00 7.50 0.50 99.00 384.50 707.50 2723.50
1969 731.50 566.00 404.50 224.50 21.50 4.50 0.00 0.00 0.00 140.50 301.50 496.00 2890.50
1970 493.50 352.00 299.00 250.50 53.00 17.50 0.00 0.00 3.50 137.50 323.00 654.00 2583.50
1971 585.50 453.50 409.50 237.00 93.50 17.00 0.00 0.00 33.50 212.50 366.00 702.00 3110.00
1972 702.00 413.50 215.00 178.50 62.50 8.50 0.00 0.00 12.00 125.50 463.50 771.50 2952.50
1973 700.00 395.50 458.00 137.50 28.00 2.50 0.00 0.00 7.50 103.00 444.00 542.50 2818.50
1974 605.00 506.50 363.00 260.00 60.50 3.00 5.50 0.00 0.00 65.00 412.50 659.50 2940.50
1975 655.00 506.50 443.00 352.50 64.50 8.00 0.50 1.50 0.00 194.00 446.50 610.00 3282.00
1976 597.00 448.00 400.50 283.50 2.50 13.50 0.00 8.00 5.50 63.79 e 270.00 550.00 2642.29
1977 670.00 314.09 e 399.68 c 79.00 168.50 1.50 0.00 0.00 7.50 62.50 336.00 479.00 2517.77
1978 469.50 396.50 230.00 249.00 38.00 0.00 0.00 0.00 15.00 29.50 415.50 696.00 2539.00
1979 618.50 484.50 322.00 219.50 53.00 0.50 0.00 0.00 0.00 129.50 429.50 569.50 2826.50
1980 552.00 424.50 407.50 192.50 77.50 27.00 0.00 1.00 4.50 0.00 z 0.00 z 530.00 2216.50
1981 549.00 379.00 364.25 a 172.24 a 32.00 0.00 0.00 0.00 12.50 161.50 315.00 539.00 2524.49
1982 710.50 417.00 436.50 270.50 17.00 29.50 0.00 0.00 18.00 127.00 489.50 620.50 3136.00
1983 660.50 423.00 397.50 328.50 110.00 1.00 0.00 0.00 4.50 60.00 428.00 604.50 3017.50
1984 547.50 456.50 214.00 210.00 30.50 5.50 0.00 0.00 0.00 167.50 440.00 617.50 2689.00
1985 639.50 351.00 429.00 122.00 56.50 10.00 0.00 0.00 28.50 136.00 528.50 725.00 3026.00
1986 511.00 367.00 244.00 217.00 83.50 2.50 0.00 0.00 69.00 63.00 257.00 585.50 2399.50
1987 625.00 406.50 383.50 82.00 28.00 0.00 3.50 1.50 0.50 17.50 363.50 635.00 2546.50
1988 597.50 333.00 259.00 161.00 128.50 38.50 0.00 1.00 7.00 46.50 389.50 577.00 2538.50
1989 626.50 490.00 343.50 101.00 44.50 0.00 0.00 0.00 16.50 127.00 333.00 600.00 2682.00
1990 618.00 523.50 289.50 79.00 68.00 8.50 0.00 1.00 0.00 44.50 349.50 708.50 2690.00
1991 575.50 278.50 489.00 211.00 96.50 4.50 0.00 0.00 0.00 82.50 277.00 568.50 2583.00
1992 639.00 314.50 264.00 105.50 0.00 7.50 0.00 0.00 0.00 40.00 322.50 635.50 2328.50
1993 642.50 463.50 207.00 202.50 45.50 18.50 0.00 0.00 3.50 44.50 350.00 589.50 2567.00
1994 500.00 485.50 236.00 122.50 49.50 1.00 0.00 0.00 0.50 79.50 524.00 682.00 2680.50
1995 511.50 313.00 371.00 200.50 103.50 0.00 z 0.00 0.00 1.00 29.50 192.00 478.00 2200.00
1996 563.00 373.50 283.00 182.00 43.00 0.00 0.00 0.00 0.50 120.50 286.00 493.50 2345.00
1997 533.50 358.00 209.50 142.00 16.50 5.00 0.00 0.00 6.00 95.00 312.00 550.00 2227.50
1998 528.00 468.00 319.50 263.00 200.50 2.50 0.00 0.00 8.00 95.00 374.00 648.50 2907.00
1999 573.00 477.00 430.50 216.50 57.00 27.50 0.00 0.00 0.00 44.00 289.50 501.50 2616.50
2000 498.50 406.00 300.50 107.00 84.50 1.00 0.00 0.00 12.50 127.00 452.50 507.00 2496.50
2001 585.50 452.50 234.00 250.50 8.50 2.50 0.00 0.00 0.00 34.00 287.50 546.50 2401.50
2002 603.00 358.50 392.00 140.50 72.50 0.00 0.00 2.50 0.50 89.50 281.50 517.00 2457.50
2003 426.50 404.00 282.50 326.50 94.50 0.00 0.00 0.00 0.00 15.50 424.00 564.50 2538.00
2004 605.00 438.50 145.00 130.50 74.00 0.00 0.00 0.00 5.50 158.00 355.00 512.50 2424.00
2005 599.50 318.00 254.00 199.50 73.00 38.50 0.00 0.00 0.00 73.50 289.00 507.50 2352.50
2006 507.50 367.00 507.50 251.50 18.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1652.00
Period of Record Statistics
MEAN 613.97 424.17 352.10 195.30 66.06 9.58 0.28 0.74 8.12 93.78 363.79 599.00 2737.73
S.D. 81.80 72.97 86.59 82.85 38.92 12.06 1.19 1.69 11.93 47.49 72.59 82.32 261.47
SKEW 0.01 0.07 -0.33 0.76 0.85 1.30 4.38 2.98 2.91 0.30 0.11 0.36 -0.05
MAX 797.50 585.00 507.50 476.00 200.50 42.00 6.50 8.00 69.00 212.50 528.50 821.00 3282.00
MIN 426.50 269.50 145.00 48.00 0.00 0.00 0.00 0.00 0.00 15.50 192.00 418.00 2227.50
NO YRS 58 58 58 58 58 56 58 58 57 56 57 58 53