WILSON CREEK, WASHINGTON

Monthly Total Heating Degree Days

(459327)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 198006
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 14.00 31.00 d 21.04 c 187.50 b 544.57 a 848.00 1429.00 3075.10
1949 1827.50 1130.50 724.50 419.50 146.98 b 94.50 22.39 d 31.00 146.50 600.76 b 669.31 a 1099.00 6912.44
1950 1807.50 1043.50 800.00 566.90 a 314.00 97.00 7.48 b 5.34 b 115.34 a 531.13 a 831.72 a 984.50 7104.43
1951 1118.00 913.77 b 913.47 a 472.24 a 240.50 84.50 14.50 37.95 b 137.22 c 528.72 d 882.12 d 1297.50 6640.49
1952 1340.50 963.00 795.67 a 394.14 a 213.00 91.61 b 20.84 b 40.00 84.00 e 338.86 b 983.50 1007.50 6272.62
1953 837.00 a 761.19 a 676.46 c 516.50 312.58 a 171.50 12.00 28.23 c 122.14 b 426.50 726.00 938.50 5528.61
1954 1196.60 a 809.50 808.58 a 563.04 b 211.83 a 144.83 a 20.48 c 34.74 b 152.59 a 533.20 a 649.66 a 1054.00 6179.04
1955 1106.50 957.00 903.50 619.82 b 345.50 48.50 44.90 b 8.27 a 184.66 a 481.50 1063.00 1240.00 a 7003.14
1956 1088.00 1155.86 a 783.00 372.00 157.00 108.00 5.68 a 22.22 a 140.50 500.00 917.14 b 1059.68 a 6309.08
1957 1562.00 1051.62 b 550.50 f 438.00 104.37 a 54.64 b 20.00 38.20 c 73.39 b 503.00 852.00 908.50 5605.71
1958 949.00 604.00 750.00 499.50 111.17 b 31.50 1.50 0.52 a 190.00 455.00 847.00 1021.00 5460.19
1959 1070.00 906.00 702.67 a 428.50 345.13 a 84.50 37.00 51.50 204.83 a 517.18 a 935.00 1029.50 6311.81
1960 1373.50 889.68 a 741.42 a 480.50 341.50 69.31 a 0.00 81.63 a 127.50 454.67 a 818.28 a 1160.50 6538.48
1961 1040.00 700.50 672.00 488.57 b 241.80 a 29.00 3.00 0.00 b 220.34 a 565.23 a 982.00 1123.00 6065.45
1962 1222.50 828.59 a 787.50 385.50 333.52 b 107.00 46.50 26.72 b 115.50 488.00 755.17 a 949.00 6045.51
1963 1308.50 785.50 679.50 523.45 a 274.87 a 70.00 19.24 b 25.50 63.50 392.15 a 757.50 1135.63 a 6035.34
1964 1057.50 905.50 795.31 b 542.00 279.50 81.72 a 16.00 63.03 a 208.00 478.50 889.50 1272.50 6589.07
1965 1102.50 851.50 815.00 411.21 a 288.00 58.50 22.50 39.55 b 238.45 a 407.00 708.00 1040.80 d 5983.00
1966 1096.48 d 834.50 696.50 444.31 a 200.00 123.00 25.50 26.50 48.00 498.07 a 715.50 932.50 5640.86
1967 911.00 704.50 753.50 612.00 289.50 38.50 6.00 0.50 54.00 455.50 824.00 1140.00 5789.00
1968 1046.50 784.00 651.00 563.00 250.58 a 50.00 f 11.00 52.18 a 114.50 550.00 782.59 a 1114.00 5919.35
1969 1531.00 1009.50 718.00 424.50 150.00 27.50 6.50 20.50 162.41 a 564.50 824.00 1004.00 6442.41
1970 1152.50 755.00 732.00 586.50 247.00 42.00 7.00 5.50 268.50 546.50 847.50 1198.50 6388.50
1971 1073.00 822.50 851.00 512.00 175.50 137.50 38.50 9.41 c 273.50 585.50 819.00 1289.50 6586.91
1972 1232.50 959.00 650.00 580.50 204.00 55.00 21.00 8.00 233.00 488.00 788.00 1217.50 6436.50
1973 1167.00 807.50 662.00 429.00 213.00 93.50 17.00 38.50 122.00 483.50 890.36 b 920.50 5843.86
1974 1195.50 728.00 700.50 447.50 327.00 55.50 24.50 16.00 73.50 470.50 769.50 992.50 5800.50
1975 1190.00 967.50 801.50 573.00 244.00 81.00 2.00 27.00 94.50 477.50 855.50 628.50 l 5313.50
1976 1111.50 868.00 810.50 482.50 261.50 141.50 20.50 37.50 51.50 499.50 845.00 1113.50 6243.00
1977 1298.50 758.00 721.00 343.00 318.00 25.50 37.00 34.50 230.40 e 521.00 871.50 0.00 z 5158.40
1978 1096.00 784.50 609.50 453.00 314.00 69.00 10.00 86.00 208.85 d 0.00 z 0.00 z 1332.00 4962.85
1979 1595.50 966.50 713.50 509.00 214.00 77.50 34.50 4.43 c 93.33 c 358.50 988.00 980.50 6535.26
1980 1367.00 925.00 731.50 369.00 221.50 150.00 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3764.00
Period of Record Statistics
MEAN 1220.97 872.85 746.79 482.82 246.59 79.93 18.94 28.81 148.12 491.76 836.62 1099.50 6257.13
S.D. 234.02 127.30 72.84 75.82 68.83 40.42 12.91 21.75 65.91 61.79 95.41 136.27 432.31
SKEW 1.06 0.27 0.40 0.07 -0.33 0.44 0.48 0.85 0.22 -0.62 0.20 0.58 0.03
MAX 1827.50 1155.86 913.47 619.82 345.50 171.50 46.50 86.00 273.50 600.76 1063.00 1429.00 7104.43
MIN 837.00 604.00 609.50 343.00 104.37 14.00 0.00 0.00 48.00 338.86 649.66 908.50 5460.19
NO YRS 32 32 31 32 32 32 32 32 32 31 31 30 26