INCHELIUM 2 NW, WASHINGTON

Monthly Total Heating Degree Days

(453903)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197509
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
1953 0.00 z 0.00 z 0.00 z 0.00 z 156.00 r 223.50 26.83 e 48.50 210.50 523.00 795.50 1059.50 2887.33
1954 1229.00 850.50 886.00 638.50 326.02 a 219.00 46.00 87.83 a 226.73 d 646.00 734.00 1108.50 6998.08
1955 1127.50 1069.70 a 1056.00 675.00 437.10 a 116.00 84.00 28.50 260.00 571.00 1001.25 b 1213.00 7639.05
1956 1177.40 e 1254.77 a 944.50 481.00 241.50 197.50 26.00 46.00 208.50 622.50 1039.50 1142.50 7381.67
1957 1587.00 1166.00 879.50 513.50 160.50 119.00 50.00 63.50 115.00 591.00 934.00 985.50 7164.50
1958 1011.00 765.50 776.50 546.00 121.50 48.00 5.00 7.00 0.00 z 0.00 z 0.00 z 0.00 z 3280.50
1959 0.00 z 1071.50 822.50 497.00 393.50 128.00 59.00 101.50 282.50 629.00 1044.00 1175.00 6203.50
1960 1362.50 1032.00 848.50 566.50 410.50 127.00 5.00 105.00 223.00 536.00 911.00 1179.00 7306.00
1961 1108.00 806.50 778.00 580.50 306.50 58.50 13.00 6.50 301.00 653.50 1048.50 1224.00 6884.50
1962 1392.50 957.00 941.00 475.50 425.00 191.00 97.00 65.00 164.00 573.50 785.00 988.50 7055.00
1963 1327.00 867.00 766.00 566.50 337.50 124.00 41.00 40.50 92.50 471.00 849.50 1176.00 6658.50
1964 1142.00 1080.00 935.00 591.00 358.50 118.50 35.50 111.00 302.00 575.50 893.50 1277.50 7420.00
1965 1135.00 977.00 985.00 501.00 387.00 128.50 39.50 0.00 z 321.00 513.00 804.50 1070.03 b 6861.53
1966 1197.00 924.50 835.50 545.00 293.00 206.50 44.00 51.50 83.50 578.50 839.50 1009.50 6608.00
1967 1053.00 831.00 855.50 641.50 353.00 70.50 27.50 5.00 71.00 543.50 887.00 1246.50 6585.00
1968 1215.00 905.50 732.50 605.00 357.00 148.50 33.50 99.50 220.00 652.50 891.50 1214.68 a 7075.18
1969 1509.50 1071.50 849.00 522.00 249.50 79.00 63.00 42.00 223.50 666.50 895.50 1088.50 7259.50
1970 1225.00 919.50 865.50 660.00 309.50 95.50 21.50 14.50 339.50 649.50 924.00 1237.00 7261.00
1971 1185.50 978.00 998.50 588.50 267.00 202.50 87.50 27.50 320.00 646.50 889.50 1279.50 7470.50
1972 1345.50 1029.00 746.00 661.00 279.50 136.50 57.00 37.00 331.00 609.50 852.50 1238.50 7323.00
1973 1261.00 931.50 777.00 0.00 z 298.00 167.50 35.00 56.00 204.50 596.00 949.50 1046.00 6322.00
1974 1246.00 875.00 809.00 516.00 429.00 92.00 44.00 28.50 130.00 h 0.00 z 0.00 z 0.00 z 4039.50
1975 0.00 z 0.00 z 954.00 666.50 0.00 z 28.50 n 0.00 z 45.31 e 128.50 g 0.00 z 0.00 z 0.00 z 1665.81
Period of Record Statistics
MEAN 1241.82 969.67 865.50 573.21 320.98 136.23 42.76 50.80 224.99 592.38 898.46 1147.96 7130.59
S.D. 144.77 122.84 88.74 65.19 83.93 52.60 24.65 32.76 84.88 54.85 87.80 96.59 316.66
SKEW 0.74 0.44 0.39 0.13 -0.67 0.16 0.58 0.45 -0.43 -0.49 0.18 -0.33 -0.44
MAX 1587.00 1254.77 1056.00 675.00 437.10 223.50 97.00 111.00 339.50 666.50 1048.50 1279.50 7639.05
MIN 1011.00 765.50 732.50 475.50 121.50 48.00 5.00 5.00 71.00 471.00 734.00 985.50 6585.00
NO YRS 20 21 22 21 21 22 22 22 20 20 20 20 16