DOWNIEVILLE, CALIFORNIA

Monthly Total Heating Degree Days

(042500)

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 32.55 a 54.50 172.50 358.50 635.50 993.00 2246.55
1949 1138.50 917.00 779.00 357.41 a 302.50 88.97 a 24.05 b 79.50 124.50 397.00 529.80 e 890.70 c 5628.93
1950 1124.00 732.00 710.23 c 438.21 b 288.00 168.62 a 4.65 a 22.98 b 163.00 215.50 k 510.00 a 708.72 b 4870.42
1951 904.96 e 733.92 b 715.38 e 312.50 f 239.00 h 64.50 j 28.42 a 32.00 80.50 377.00 f 463.50 i 918.78 b 3413.96
1952 1034.37 a 819.54 d 675.00 g 333.50 i 184.00 k 210.00 c 7.00 20.50 96.00 220.00 643.80 e 907.00 3958.21
1953 584.50 g 625.00 700.27 c 321.00 j 487.65 e 244.82 b 8.50 87.50 68.50 403.00 621.50 770.00 4016.74
1954 874.00 587.50 741.50 346.00 210.50 205.50 12.50 109.00 196.50 384.50 611.00 944.50 5223.00
1955 1007.00 800.00 711.45 a 681.50 322.50 146.00 85.00 20.00 170.50 316.56 e 749.00 815.50 5825.01
1956 863.50 833.48 b 648.00 509.50 291.00 139.50 25.00 41.00 115.50 466.50 683.79 a 911.50 5528.27
1957 1051.50 705.50 642.22 a 474.00 359.50 85.50 14.00 73.50 108.50 476.76 b 719.50 860.50 5570.98
1958 846.50 660.50 530.50 j 555.50 224.00 149.50 22.73 a 0.00 68.50 225.50 651.00 750.00 4153.73
1959 809.00 766.50 583.00 223.50 h 396.50 84.11 b 0.00 h 47.00 196.50 276.50 573.50 823.00 4555.61
1960 975.50 758.00 597.00 507.50 300.00 f 27.50 5.74 d 62.00 51.50 335.32 a 689.00 835.50 4844.56
1961 808.00 649.00 689.00 446.50 386.50 92.00 22.73 a 24.00 165.50 366.50 696.00 904.00 5249.73
1962 886.50 787.50 793.50 360.50 395.50 99.50 8.50 26.50 76.50 345.00 566.00 768.50 5114.00
1963 874.50 491.50 741.50 678.00 273.00 154.50 56.00 35.50 84.50 338.50 688.50 832.50 5248.50
1964 888.50 717.50 730.50 505.00 397.00 182.50 24.50 14.50 156.50 230.50 742.20 e 455.50 l 4589.20
1965 473.00 n 413.50 j 417.50 j 288.50 l 181.00 j 137.00 24.50 35.00 199.00 246.00 431.50 h 645.00 j 641.50
1966 615.50 k 580.00 h 467.50 i 225.50 k 111.50 f 146.00 52.18 a 23.00 104.00 290.00 355.50 j 571.00 j 615.18
1967 527.00 l 417.00 j 518.50 h 493.00 k 231.00 f 178.00 3.50 0.00 40.50 359.50 495.58 d 545.00 n 1077.08
1968 532.00 m 465.00 i 414.00 j 427.80 e 310.50 70.00 2.00 88.00 89.00 355.39 c 368.00 n 584.50 l 1342.69
1969 644.50 j 569.00 i 478.50 k 337.00 i 163.27 a 93.50 1.50 8.50 62.50 461.00 435.50 h 529.00 j 790.27
1970 518.00 i 404.00 i 422.50 i 612.93 a 245.50 107.50 3.50 4.00 133.50 349.55 b 348.00 l 594.50 k 1456.48
1971 328.00 u 460.50 i 536.00 h 374.00 h 372.00 a 158.50 12.50 4.50 149.00 440.41 b 660.50 1011.50 2808.91
1972 995.50 734.13 b 503.00 549.11 b 279.00 71.00 12.00 47.50 198.00 409.00 737.14 b 1044.38 b 5579.76
1973 977.02 a 683.00 745.00 420.00 182.50 79.50 8.00 37.50 125.00 387.50 b 544.50 h 703.50 f 3645.02
1974 890.45 b 539.50 g 656.74 d 556.00 289.85 a 54.00 55.50 33.50 54.31 a 297.71 b 448.50 j 524.00 l 2888.06
1975 645.00 i 488.50 i 528.50 j 583.00 f 291.29 b 104.00 40.82 a 33.00 21.50 462.86 b 571.00 f 837.55 c 1791.03
1976 855.17 b 732.50 702.31 b 596.11 c 179.00 61.50 p 23.50 p 120.90 a 117.50 281.50 259.00 n 0.00 z 3584.99
1977 0.00 z 0.00 z 534.50 i 271.50 i 520.00 63.89 c 17.57 a 16.05 c 171.50 298.08 e 385.50 j 462.50 m 1087.09
1978 437.50 n 421.00 k 346.50 j 320.50 l 215.00 j 0.00 z 28.23 c 0.00 z 190.34 a 141.50 l 0.00 z 240.00 w 218.58
1979 534.00 k 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 0.00 z 0.00 z 0.00
1980 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 0.00 z 0.00 z 0.00 z 0.00
1981 0.00 z 627.93 a 593.50 348.10 a 66.00 o 23.00 h 1.50 k 0.00 f 0.00 z 240.50 m 374.50 l 471.00 m 1569.53
1982 977.02 a 654.64 c 484.00 j 388.00 l 174.00 l 149.00 22.00 k 18.50 i 119.50 j 412.50 759.00 448.00 o 2952.16
1983 475.00 l 372.50 l 687.00 231.00 n 0.00 z 25.50 w 19.00 w 29.00 64.00 185.00 h 381.50 l 799.00 1579.00
1984 713.50 647.00 513.50 489.00 167.00 99.50 1.00 6.50 50.50 421.50 689.50 875.00 4673.50
1985 743.00 638.50 731.00 323.00 284.00 42.00 7.50 11.50 176.50 328.00 737.50 754.33 a 4776.83
1986 657.00 580.00 482.50 423.00 266.50 41.50 10.00 0.00 272.00 317.50 532.50 765.50 4348.00
1987 851.00 654.00 620.00 281.00 188.50 39.50 53.50 10.00 41.00 178.50 577.00 877.50 4371.50
1988 847.00 532.00 539.00 411.00 321.50 126.00 6.50 11.00 76.50 123.50 638.00 839.00 4471.00
1989 913.50 791.00 628.00 324.50 265.00 36.00 14.50 30.50 96.00 382.50 565.50 702.50 4749.50
1990 843.50 817.50 584.00 310.00 308.00 116.50 15.50 43.00 67.50 249.00 594.50 968.50 4917.50
1991 752.00 486.50 805.00 509.50 374.00 147.50 2.50 21.00 25.00 223.50 567.50 788.00 4702.00
1992 758.00 632.00 553.50 342.50 81.50 96.00 30.00 9.50 49.00 259.00 620.00 932.00 4363.00
1993 962.00 768.50 510.00 469.00 235.50 147.50 28.00 27.50 74.50 256.00 608.50 798.00 4885.00
1994 713.00 723.00 513.00 410.00 233.50 88.00 0.00 0.00 64.00 334.50 834.00 890.50 4803.50
1995 794.00 508.50 675.50 527.00 328.50 175.50 21.50 15.00 44.50 183.50 409.00 718.50 4401.00
1996 740.00 616.00 556.00 409.00 283.00 66.00 1.00 4.00 92.00 324.50 553.00 750.50 4395.00
1997 774.00 578.00 486.50 422.50 125.50 93.50 8.50 3.50 45.50 359.50 570.00 777.00 4244.00
1998 787.00 752.00 603.50 533.00 503.00 122.50 5.50 5.00 98.00 368.00 662.50 846.50 5286.50
1999 722.00 693.50 661.50 510.00 281.50 118.00 19.00 25.00 21.50 165.33 a 543.00 744.50 4504.83
2000 771.00 697.04 a 568.00 366.00 246.50 57.00 30.50 2.00 86.00 342.03 a 685.50 731.08 a 4582.65
2001 811.88 b 759.50 494.45 a 495.52 a 67.68 a 65.00 4.50 2.50 13.97 a 181.50 560.89 b 864.00 4321.39
2002 862.00 570.50 650.00 393.50 272.00 33.00 0.00 21.50 76.00 275.50 515.50 858.50 4528.00
2003 657.00 622.00 526.50 622.00 273.00 31.50 1.50 5.00 27.00 128.00 705.00 833.50 4432.00
2004 842.00 731.00 393.00 369.00 248.00 56.00 0.00 9.00 89.00 346.00 628.00 780.50 4491.50
2005 880.50 607.50 564.50 473.00 275.50 167.50 0.00 1.50 133.00 312.00 579.00 727.00 4721.00
2006 784.00 619.50 827.00 506.00 175.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2912.00
Period of Record Statistics
MEAN 859.54 682.77 631.54 459.25 281.99 109.12 17.74 28.21 102.48 318.65 627.10 836.87 4836.69
S.D. 114.20 96.73 102.27 99.23 97.09 52.35 18.04 28.44 58.01 87.86 86.06 85.17 461.51
SKEW 0.50 -0.03 -0.10 0.33 0.27 0.39 1.57 1.49 0.66 -0.31 0.00 0.46 0.63
MAX 1138.50 917.00 827.00 681.50 520.00 244.82 85.00 120.90 272.00 476.76 834.00 1044.38 5825.01
MIN 657.00 486.50 393.00 281.00 67.68 27.50 0.00 0.00 13.97 123.50 409.00 702.50 4244.00
NO YRS 43 44 43 42 46 50 51 53 54 51 42 42 31