WEAVERVILLE RANGER STN, CALIFORNIA

Monthly Total Heating Degree Days

(049490)

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 33.50 17.50 110.19 d 346.00 704.50 991.00 2202.69
1949 1128.50 832.00 704.00 315.00 207.00 62.50 7.23 a 9.00 43.50 388.00 490.00 905.50 5092.23
1950 1127.00 725.00 690.00 440.36 b 279.55 c 96.50 h 0.00 7.00 88.00 325.50 a 536.00 689.00 4907.41
1951 864.00 681.00 674.54 d 295.34 a 217.50 61.00 10.00 24.05 b 33.10 a 406.62 a 443.50 g 894.83 e 4161.98
1952 946.50 755.00 731.60 a 392.00 255.50 164.50 0.00 b 10.00 46.00 192.50 483.00 h 665.50 h 3493.60
1953 772.62 e 194.00 r 511.00 g 498.33 c 429.50 216.50 2.00 78.50 36.00 327.88 e 415.50 h 515.00 k 2361.33
1954 863.23 e 579.00 654.50 342.50 173.50 188.50 9.00 57.87 a 161.00 394.50 613.00 906.00 4942.60
1955 948.50 776.50 715.50 672.41 a 278.00 124.00 89.50 4.00 159.00 324.47 a 760.00 816.00 5667.88
1956 823.00 853.00 668.50 424.50 248.00 a 118.50 13.50 30.00 144.00 353.00 f 636.96 b 860.50 4820.46
1957 1010.50 631.50 609.00 458.28 a 234.05 a 64.00 0.00 24.00 50.50 398.50 676.55 a 812.00 4968.88
1958 815.50 565.50 712.50 395.50 107.50 60.00 a 4.65 a 0.00 92.50 241.50 602.00 674.77 a 4271.92
1959 808.50 697.00 576.00 315.50 331.00 68.00 9.50 20.00 147.00 297.71 b 611.50 916.00 4797.71
1960 910.00 749.34 a 582.00 480.00 b 342.50 13.50 0.00 40.50 38.00 323.00 662.00 821.00 4961.84
1961 779.50 628.00 682.50 419.00 343.00 54.50 16.00 0.50 137.07 a 328.00 679.00 869.00 4936.07
1962 902.00 681.00 705.00 332.00 335.83 a 85.00 3.50 20.50 52.00 309.50 539.50 779.98 c 4745.82
1963 891.50 470.50 694.50 634.50 228.50 132.50 37.50 29.00 57.50 299.00 678.21 b 813.50 4966.71
1964 904.50 699.50 714.00 490.50 323.50 140.00 17.50 17.00 128.50 241.00 689.50 781.50 5147.00
1965 871.00 635.00 579.00 474.00 307.00 116.00 0.00 z 17.50 126.00 245.50 569.44 c 933.00 4873.44
1966 947.50 737.00 638.50 344.48 a 155.50 130.00 41.00 25.00 87.00 305.00 589.50 806.00 4806.48
1967 880.00 631.50 738.00 728.50 258.00 108.50 0.50 0.00 13.50 343.00 519.00 1071.88 e 5292.38
1968 957.50 594.50 595.00 441.50 281.50 90.00 0.50 71.00 89.50 344.58 e 473.50 i 917.50 4383.08
1969 1010.50 799.08 b 676.32 a 486.50 161.50 69.50 4.00 13.00 54.00 484.00 609.00 792.00 5159.39
1970 772.00 573.48 a 599.00 594.00 216.50 81.00 1.50 2.50 118.00 377.50 576.00 906.50 4817.98
1971 888.50 687.00 718.50 543.50 292.00 118.50 16.00 11.50 149.50 445.00 701.00 986.00 5557.00
1972 896.00 708.50 516.50 521.50 226.30 a 62.00 2.50 33.00 158.00 372.00 e 662.40 e 893.00 f 4158.70
1973 942.00 634.15 a 717.13 a 393.62 a 164.00 68.00 0.00 z 28.50 83.00 353.63 d 655.00 606.50 f 4039.03
1974 899.00 b 720.50 630.50 502.00 266.00 43.00 43.50 13.50 26.50 321.00 633.50 849.50 4948.50
1975 895.38 a 743.04 a 736.50 662.50 284.50 95.00 37.00 48.00 14.50 441.75 a 713.04 b 801.00 5472.21
1976 836.00 711.66 d 670.12 a 0.00 z 198.50 137.00 21.50 76.00 45.00 197.50 f 322.50 j 449.50 n 2695.78
1977 826.00 556.00 704.50 365.50 0.00 z 33.00 17.80 d 24.05 b 0.00 z 0.00 z 0.00 z 0.00 z 2526.85
1978 0.00 z 0.00 z 0.00 z 274.00 n 212.00 i 85.50 10.50 57.50 175.34 a 167.00 f 417.50 k 615.50 k 328.84
1979 642.00 i 486.00 j 348.50 m 321.00 m 174.50 j 80.69 a 14.35 d 25.50 25.00 296.88 e 445.00 k 452.00 n 442.43
1980 550.00 k 464.00 i 414.00 n 310.50 k 0.00 z 170.17 a 0.00 z 0.00 z 0.00 z 301.39 d 339.50 o 539.00 k 471.56
1981 468.00 l 350.00 m 353.50 m 127.00 n 157.07 a 53.00 23.50 3.00 96.96 b 416.71 e 339.00 k 537.00 i 750.24
1982 613.50 l 469.00 j 717.00 596.00 220.50 115.50 30.00 10.50 187.50 257.00 i 309.00 p 835.00 2712.00
1983 459.00 l 444.50 i 613.28 a 341.50 l 239.00 77.00 52.50 6.50 58.50 127.50 m 440.00 j 513.50 k 1046.78
1984 506.50 j 444.50 i 366.00 i 359.00 i 196.00 95.50 0.50 0.00 75.50 433.00 464.00 j 555.00 k 800.50
1985 551.00 i 426.50 i 457.00 k 253.89 c 181.50 0.00 z 0.00 14.00 116.00 224.50 i 501.00 k 528.00 k 565.39
1986 464.00 j 368.50 i 282.50 k 391.50 233.00 29.00 0.00 z 0.00 228.00 272.80 a 298.00 n 539.50 j 1154.30
1987 552.00 k 456.50 i 400.50 j 228.50 123.50 33.50 21.00 0.00 28.00 128.50 345.50 k 536.00 k 563.00
1988 521.50 l 406.50 j 554.50 226.50 i 322.00 134.00 6.00 1.00 69.00 124.50 406.00 j 527.00 k 1211.00
1989 579.00 k 0.00 z 648.50 0.00 z 271.50 27.50 4.00 24.00 52.50 305.50 338.00 n 494.00 k 1333.50
1990 531.00 j 0.00 z 491.00 229.00 i 294.00 94.00 8.50 30.50 19.50 180.50 j 432.50 k 622.00 l 937.50
1991 568.50 j 341.00 i 510.50 j 475.00 322.50 96.50 4.00 1.00 9.50 223.50 305.50 l 509.00 m 1132.00
1992 549.00 j 333.00 k 372.50 i 202.50 j 66.00 64.00 6.50 0.00 z 25.00 195.50 404.00 k 524.50 m 357.00
1993 575.00 l 477.50 i 488.50 492.00 201.00 i 142.00 28.00 10.50 83.79 a 278.00 433.50 l 870.58 a 2393.38
1994 511.00 k 453.00 i 486.50 231.00 j 159.00 87.50 0.00 0.00 56.50 361.15 a 619.50 i 876.50 2027.15
1995 477.50 k 341.00 i 633.50 303.50 j 252.50 136.50 12.00 21.50 40.00 299.00 422.00 322.50 o 1817.00
1996 431.50 o 588.50 518.50 430.00 255.00 49.00 6.50 0.00 83.00 325.50 556.50 777.00 3589.50
1997 796.00 615.00 505.50 423.50 102.00 94.50 24.50 7.50 71.00 402.50 537.00 834.00 4413.00
1998 747.50 716.50 597.50 497.50 385.00 53.50 0.00 2.00 84.00 423.00 623.50 940.00 5070.00
1999 796.50 743.00 652.50 476.50 254.00 92.50 20.50 22.50 39.00 253.00 493.50 802.00 4645.50
2000 743.50 637.00 579.50 345.00 222.00 51.00 15.50 0.50 85.00 327.50 672.50 783.00 4462.00
2001 836.00 717.50 476.00 478.00 99.00 56.00 0.00 1.00 45.00 230.50 577.50 814.00 4330.50
2002 814.50 594.50 617.50 314.50 243.50 29.50 0.00 19.00 50.00 299.50 559.00 778.50 4320.00
2003 634.50 599.00 501.00 538.50 250.00 21.50 0.00 0.00 42.00 193.50 664.00 770.50 4214.50
2004 830.00 648.00 379.00 333.00 173.00 32.50 0.00 4.50 73.50 303.50 604.00 786.50 4167.50
2005 764.00 571.00 523.50 445.50 231.50 142.00 0.00 0.00 88.00 337.50 581.50 795.00 4479.50
2006 812.50 622.00 754.00 446.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2634.50
Period of Record Statistics
MEAN 869.02 669.42 624.91 447.29 238.44 88.15 13.47 18.13 80.28 318.18 611.36 844.77 4839.08
S.D. 98.30 82.73 88.86 110.35 75.13 44.77 16.95 19.84 49.96 78.47 73.61 80.72 411.24
SKEW 0.59 0.07 -0.63 0.41 -0.03 0.60 2.14 1.48 0.83 -0.34 -0.35 0.51 0.11
MAX 1128.50 853.00 754.00 728.50 429.50 216.50 89.50 78.50 228.00 484.00 760.00 1071.88 5667.88
MIN 634.50 470.50 379.00 228.50 66.00 13.50 0.00 0.00 9.50 124.50 422.00 674.77 4167.50
NO YRS 39 39 47 45 52 55 54 56 56 50 35 37 27