SIERRAVILLE RANGER STN, CALIFORNIA

Monthly Total Heating Degree Days

(048218)

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 133.00 174.50 263.50 487.50 827.00 1293.00 3178.50
1949 1623.50 1171.50 902.00 517.50 419.50 187.00 98.50 170.00 209.50 543.50 650.00 1120.81 b 7613.31
1950 1220.00 825.00 857.00 582.00 356.00 197.50 26.50 54.50 180.50 377.50 560.00 0.00 z 5236.50
1951 756.50 f 804.00 795.50 423.62 a 358.50 129.64 b 33.67 b 78.50 136.03 a 540.00 772.50 1154.50 5226.47
1952 1322.00 1051.50 1095.50 516.50 324.00 254.46 b 41.00 131.00 192.00 393.50 894.31 a 1091.95 b 7307.72
1953 872.81 b 824.00 849.29 b 656.50 649.89 c 352.50 83.50 190.00 151.00 562.00 321.50 o 703.50 h 5191.50
1954 719.00 j 785.56 a 951.04 c 498.50 306.90 a 299.50 81.00 197.37 a 316.00 540.00 304.50 q 1156.54 e 5132.40
1955 1431.17 d 1057.00 b 943.90 b 794.44 c 322.50 g 262.00 190.65 a 95.50 263.65 d 460.23 e 520.00 k 935.74 d 6434.28
1956 1027.13 a 1180.41 b 875.46 d 469.50 h 432.93 b 260.50 86.00 150.00 232.00 578.50 827.22 c 1074.84 b 6725.00
1957 1347.98 a 906.50 785.33 a 645.50 462.00 196.50 101.50 220.50 190.50 615.35 a 878.28 a 990.97 a 7340.91
1958 1078.28 a 747.50 982.18 a 679.50 293.97 b 236.50 54.00 19.00 196.50 394.50 751.07 b 814.61 d 6247.61
1959 884.50 934.23 b 722.82 a 505.00 549.00 153.50 22.45 b 124.00 287.00 456.50 734.50 1090.00 6463.50
1960 860.00 i 927.00 700.60 a 633.10 a 495.48 a 96.00 29.00 124.00 159.50 516.50 834.31 a 986.32 a 5501.81
1961 910.07 c 775.70 a 814.00 624.83 a 496.52 a 133.50 63.03 a 82.50 308.50 529.50 840.52 a 1038.50 6617.17
1962 1200.50 1012.50 1024.03 a 512.50 530.00 221.50 75.00 118.00 164.00 469.50 675.00 897.00 6899.53
1963 1082.86 b 623.50 858.70 a 804.00 366.32 a 271.03 a 166.22 b 139.50 144.00 432.97 a 826.55 a 991.50 6707.16
1964 1105.31 b 1135.00 972.00 675.50 559.50 303.00 87.50 94.50 342.00 395.00 926.50 937.50 7533.31
1965 1149.50 842.50 803.50 610.00 503.75 a 231.00 86.00 127.00 369.50 408.00 769.14 a 1211.00 7110.89
1966 1209.50 1023.50 789.00 543.75 b 278.00 228.00 134.50 58.00 189.00 460.50 781.61 b 1060.00 6755.36
1967 1044.00 791.00 871.00 918.00 453.24 b 246.21 a 50.50 16.50 134.00 476.50 664.50 1335.00 7000.45
1968 1206.00 839.00 766.50 642.00 447.00 168.00 47.50 196.50 233.00 498.00 828.10 a 1170.77 a 7042.37
1969 1097.50 1105.00 1042.00 644.00 304.66 b 208.50 50.00 73.00 169.00 616.79 b 763.39 b 893.50 6967.34
1970 937.23 a 739.41 a 796.18 a 775.86 a 401.40 b 181.00 44.00 58.00 318.00 553.35 a 692.00 1149.14 b 6645.57
1971 1160.95 a 956.50 912.90 b 679.04 d 536.09 b 266.90 a 60.50 49.00 309.50 594.17 d 832.20 e 1202.80 a 7560.53
1972 1322.67 a 926.00 646.72 b 700.18 b 404.07 b 147.50 83.50 120.26 b 339.00 552.26 d 868.97 a 1293.22 a 7404.34
1973 1198.15 a 902.22 a 936.64 c 472.50 h 310.00 a 190.00 0.00 z 115.50 296.00 603.90 e 817.24 a 810.50 f 5369.66
1974 901.50 g 647.50 g 788.90 b 729.44 c 416.50 148.00 122.50 118.50 185.00 544.50 840.00 e 1074.84 b 4968.19
1975 924.00 f 756.00 f 921.39 d 665.00 g 447.71 e 236.50 81.52 d 126.00 150.50 404.00 h 856.03 a 962.50 3782.15
1976 1017.50 918.50 889.50 742.00 334.00 260.00 68.31 d 169.95 c 0.00 z 347.00 f 652.00 976.50 6028.26
1977 1173.19 b 432.00 j 608.50 j 384.00 h 646.50 120.00 e 60.34 c 48.71 c 224.50 427.11 d 0.00 z 626.50 i 2700.35
1978 661.50 i 527.50 j 465.50 i 426.50 j 356.00 g 232.00 73.50 120.50 f 315.54 b 356.00 707.00 f 770.50 l 977.04
1979 949.50 g 553.00 k 478.50 l 400.00 l 211.00 k 227.78 c 104.07 c 69.50 f 99.00 k 410.48 b 549.00 h 618.00 k 742.33
1980 471.00 p 487.50 j 526.00 m 404.00 j 293.00 j 287.68 b 80.50 97.50 224.44 c 460.19 b 495.00 i 643.00 i 1150.31
1981 535.00 k 475.50 m 547.50 i 355.00 h 380.94 e 113.08 d 62.00 d 42.33 e 145.38 d 634.90 e 738.60 e 835.85 d 2953.09
1982 684.00 n 605.50 h 838.50 732.50 346.00 194.00 85.50 66.00 281.50 553.50 872.00 1123.50 5093.00
1983 572.50 l 465.00 l 545.00 i 557.00 i 400.00 171.50 161.00 94.50 216.00 448.00 809.00 904.00 3204.00
1984 724.00 j 631.50 i 513.00 j 483.50 i 393.50 258.50 35.50 72.50 229.50 676.50 906.50 1225.53 a 3798.03
1985 820.00 j 677.00 i 978.10 b 337.00 k 467.50 139.50 46.00 162.00 382.00 612.77 a 1063.97 a 1135.50 4987.34
1986 562.00 l 524.50 i 438.50 k 339.00 n 234.00 l 139.50 107.50 23.00 420.00 530.50 434.50 l 577.00 m 1220.50
1987 825.00 k 597.50 i 561.50 i 280.00 j 328.08 a 148.50 181.00 69.50 177.00 386.50 470.50 l 599.00 m 1290.58
1988 591.00 p 629.50 i 523.50 j 356.00 j 328.00 i 202.50 34.50 59.00 238.50 343.50 760.86 a 778.00 j 1638.86
1989 773.00 n 713.50 l 728.00 479.00 436.00 156.00 97.00 151.50 245.69 a 604.00 790.50 652.00 k 3687.69
1990 582.00 n 0.00 z 606.00 i 338.50 i 469.00 273.00 60.00 113.00 224.00 446.50 600.50 j 802.00 k 1585.50
1991 669.00 l 432.00 i 592.00 m 685.86 a 586.00 306.00 44.00 79.50 150.00 a 411.50 453.50 k 747.50 k 2262.86
1992 662.00 m 505.50 j 436.00 l 504.00 235.50 186.50 119.00 73.00 183.00 440.50 436.50 o 609.50 o 1741.50
1993 572.50 q 657.50 j 530.50 j 433.50 i 265.50 k 278.50 156.00 157.50 243.00 505.00 470.50 m 677.50 k 1340.00
1994 570.50 m 635.00 i 722.82 a 426.50 i 255.00 k 238.00 33.50 14.00 p 257.50 595.50 641.50 l 661.50 m 1847.32
1995 614.00 l 461.00 j 580.50 j 447.50 j 232.50 q 298.50 119.00 118.00 187.00 481.50 389.50 k 292.00 s 1204.00
1996 459.00 p 442.50 m 489.00 m 379.00 j 444.50 166.00 26.00 60.50 254.00 502.56 e 374.50 o 476.50 n 1453.56
1997 556.50 p 491.50 k 375.00 l 439.50 i 181.50 k 231.50 80.00 84.00 163.50 g 542.00 452.00 l 657.00 l 937.50
1998 525.50 o 606.00 i 539.50 i 703.50 367.00 l 256.50 46.50 70.50 136.50 i 412.50 i 538.00 k 780.00 j 1077.00
1999 604.00 l 602.50 i 614.00 h 542.00 h 257.00 l 178.00 f 85.54 d 64.00 l 170.50 f 276.00 k 450.00 j 693.50 j 85.54
2000 545.50 n 475.00 l 593.50 h 352.50 j 329.50 g 159.81 d 86.50 f 74.52 e 246.60 e 454.50 g 600.50 k 614.00 k 480.93
2001 749.50 j 733.50 i 481.50 i 493.50 i 175.50 f 130.00 f 84.50 f 51.67 d 133.00 g 250.00 k 487.00 k 588.50 n 51.67
2002 795.00 j 573.50 i 568.50 j 562.50 461.50 158.50 26.00 115.00 212.50 566.00 562.50 i 648.50 k 2102.00
2003 605.50 i 594.50 i 533.00 j 575.50 h 298.00 i 151.80 e 57.23 e 73.50 f 156.00 e 376.17 e 497.00 m 650.00 k 741.20
2004 574.00 n 643.00 j 479.50 h 423.50 h 317.00 g 176.40 e 40.00 f 90.62 e 224.00 f 451.50 f 632.00 h 698.50 j 267.02
2005 814.00 l 683.00 i 604.50 h 476.00 i 338.50 g 316.50 13.50 g 54.25 e 326.40 e 351.50 g 556.00 g 600.50 k 697.15
2006 606.50 l 582.50 i 725.50 h 443.50 j 239.50 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1150.93 915.56 861.28 636.15 425.80 211.90 78.92 102.27 234.68 498.23 797.10 1068.63 7012.77
S.D. 177.84 144.02 106.58 113.02 98.08 60.08 41.78 48.96 70.58 82.80 96.30 136.41 406.47
SKEW 0.60 0.20 0.14 0.24 0.35 0.15 0.88 0.43 0.59 0.03 -0.01 0.03 -0.13
MAX 1623.50 1180.41 1095.50 918.00 649.89 352.50 190.65 220.50 420.00 676.50 1063.97 1335.00 7613.31
MIN 872.81 623.50 646.72 423.62 235.50 96.00 22.45 16.50 134.00 343.50 560.00 814.61 6247.61
NO YRS 24 26 32 31 40 55 53 53 51 50 33 31 17