ELTOPIA 6 W, WASHINGTON

Monthly Total Heating Degree Days

(452540)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197312
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
1954 0.00 z 0.00 z 0.00 z 0.00 z 162.50 112.50 8.50 15.00 98.50 460.00 591.00 988.00 2436.00
1955 1093.78 a 831.50 800.00 562.50 304.00 54.50 37.50 3.00 152.50 432.00 1039.50 1161.00 6471.78
1956 1085.50 1171.50 693.00 302.50 133.00 85.00 0.00 19.00 86.50 477.50 881.00 978.00 5912.50
1957 1517.00 863.50 673.50 380.50 95.00 43.00 6.72 a 10.50 55.50 505.50 743.00 780.50 5674.22
1958 0.00 z 0.00 z 177.00 u 460.50 77.00 14.50 0.00 c 3.74 b 85.86 a 299.27 e 751.67 c 916.00 2608.54
1959 994.50 800.00 627.00 381.00 280.50 71.00 12.50 r 18.00 144.50 425.00 837.00 698.00 i 4578.50
1960 1326.50 815.50 629.30 a 402.00 274.00 38.00 0.00 53.50 73.50 358.50 465.50 k 1129.50 5100.30
1961 940.00 589.50 603.50 440.00 193.50 8.50 h 0.00 0.00 a 127.78 c 463.50 914.50 981.50 5253.78
1962 1087.58 a 790.72 c 732.93 c 309.23 d 322.29 b 79.50 26.50 18.50 78.50 0.00 z 0.00 z 0.00 z 3445.76
1963 0.00 z 748.50 0.00 z 69.00 x 242.32 a 88.00 15.00 9.00 48.50 356.50 c 655.50 1076.50 3239.82
1964 905.00 779.38 a 713.00 b 498.00 282.00 70.50 13.50 56.00 149.00 422.50 792.50 1153.00 5834.38
1965 1006.50 699.50 721.00 365.00 275.00 54.00 22.00 27.50 157.00 296.00 653.00 990.50 5267.00
1966 951.00 739.50 646.00 425.00 217.50 106.00 30.00 22.50 54.00 400.50 670.50 844.23 a 5106.73
1967 778.50 625.50 672.50 549.00 249.50 39.50 0.50 0.00 43.00 373.50 728.00 971.00 5030.50
1968 914.00 693.00 555.00 476.00 207.70 a 52.50 9.09 b 22.39 d 99.00 488.25 a 727.50 1080.00 5324.42
1969 1409.00 975.00 653.67 b 455.00 145.00 35.50 8.00 40.30 a 116.00 528.00 742.76 a 956.87 a 6065.10
1970 1040.50 708.00 659.50 531.50 225.00 80.00 5.50 5.00 214.00 490.50 760.50 1028.50 5748.50
1971 875.00 755.00 754.50 508.00 197.76 b 158.00 56.83 a 22.00 226.03 a 479.98 a 745.86 a 1042.00 5820.97
1972 1071.16 c 906.81 c 582.50 535.00 172.50 59.50 14.00 12.83 b 236.90 a 453.50 751.00 1199.59 c 5995.28
1973 1077.00 773.00 602.50 426.00 221.13 a 108.00 19.50 44.50 102.12 d 403.00 a 759.00 829.00 5364.75
Period of Record Statistics
MEAN 1063.09 792.52 665.85 444.82 213.86 71.03 14.38 20.16 117.43 427.03 763.54 1005.87 5662.78
S.D. 193.18 132.54 64.72 78.33 67.97 34.06 15.04 16.82 58.27 66.65 104.42 116.98 420.32
SKEW 1.01 1.21 0.27 -0.24 -0.38 0.72 1.32 0.84 0.71 -0.54 0.95 -0.20 0.12
MAX 1517.00 1171.50 800.00 562.50 322.29 158.00 56.83 56.00 236.90 528.00 1039.50 1199.59 6471.78
MIN 778.50 589.50 555.00 302.50 77.00 14.50 0.00 0.00 43.00 296.00 591.00 780.50 5030.50
NO YRS 17 18 17 18 20 19 19 20 20 19 18 18 13