KENNEWICK, WASHINGTON

Monthly Total Heating Degree Days

(454154)

Base Temperature = 65 F

File last updated on Jul 25, 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 1.55 a 5.54 c 0.50 132.00 471.00 658.50 1069.50 2338.59
1949 1531.00 858.50 582.50 233.28 a 81.00 23.50 0.00 2.50 77.07 a 498.00 569.50 861.50 5318.34
1950 1541.00 893.50 632.50 414.50 194.94 e 54.11 b 0.00 3.00 87.93 a 418.50 692.50 397.50 m 4932.48
1951 905.00 727.00 716.00 353.00 117.50 33.50 0.00 12.50 57.00 377.50 721.00 1075.50 5095.50
1952 1135.50 730.50 591.00 264.50 87.00 32.00 0.00 6.50 55.86 a 270.00 882.00 851.00 4905.86
1953 572.50 615.00 520.00 366.00 182.00 38.50 0.00 0.00 k 58.45 a 318.00 570.00 710.50 3950.95
1954 966.17 a 654.00 690.02 b 397.00 133.50 65.17 a 0.00 m 9.00 95.00 460.50 542.00 898.00 4910.36
1955 982.00 759.50 715.00 468.00 228.37 a 20.50 16.50 f 1.50 l 134.48 a 329.38 c 932.14 b 1015.50 5584.87
1956 977.50 670.50 k 593.00 273.00 102.00 40.50 0.00 n 8.50 82.76 a 407.50 827.00 843.50 4155.26
1957 1387.00 776.00 600.00 313.00 60.00 13.00 0.50 9.76 d 59.50 462.50 740.00 744.00 5165.26
1958 818.00 554.00 633.50 371.00 59.50 2.00 0.00 0.00 j 81.50 366.00 625.86 a 855.50 4366.86
1959 931.03 a 729.00 546.50 307.00 217.00 17.50 1.50 8.00 119.50 365.50 800.50 948.50 4991.53
1960 1310.30 c 765.00 601.00 310.00 180.50 23.00 0.00 18.50 77.50 319.00 606.00 1029.00 5239.80
1961 855.50 479.00 503.00 289.50 115.50 5.00 0.00 0.00 105.00 390.00 827.88 d 871.00 4441.38
1962 975.50 726.00 641.50 237.50 198.00 43.00 10.50 3.50 56.00 369.50 547.50 787.50 4596.00
1963 1125.50 688.00 541.00 375.50 135.00 6.50 0.00 0.00 28.00 234.50 565.00 974.00 4673.00
1964 783.00 679.50 570.83 b 350.00 143.50 30.50 0.00 16.50 88.00 379.50 716.50 1026.00 4783.83
1965 867.50 620.50 662.00 271.50 151.50 13.00 2.00 17.00 103.00 248.00 570.00 908.00 4434.00
1966 848.00 656.00 562.00 282.00 93.00 41.00 9.50 6.00 23.00 344.50 595.00 751.50 4211.50
1967 667.00 550.00 559.00 446.00 138.50 5.00 0.00 0.00 24.00 258.00 664.00 886.50 4198.00
1968 824.00 621.00 479.50 378.50 95.00 15.50 0.00 3.74 b 53.00 419.50 655.50 989.00 4534.24
1969 1296.50 862.00 590.50 342.50 78.00 8.50 0.00 9.00 65.00 458.00 706.50 909.50 5326.00
1970 992.50 666.50 613.00 458.00 143.50 33.00 0.00 0.00 178.00 451.00 716.50 938.50 5190.50
1971 786.50 676.50 665.50 379.00 114.00 56.00 10.00 0.00 151.50 373.50 639.00 929.00 4780.50
1972 943.00 765.00 481.50 401.00 94.50 9.00 2.50 1.00 135.50 410.50 679.50 1083.00 5006.00
1973 1057.00 718.00 494.00 307.50 111.50 35.50 0.50 7.00 72.50 350.50 706.50 782.00 4642.50
1974 1033.00 610.00 552.50 325.50 223.00 13.39 b 1.50 0.00 41.50 433.50 630.00 781.72 a 4645.61
1975 963.00 817.50 646.50 469.00 165.50 50.00 0.00 4.81 b 72.50 334.00 664.00 874.50 5061.31
1976 863.00 714.50 644.00 386.00 0.00 z 56.00 2.58 a 8.02 b 3.50 j 405.00 705.54 b 976.50 4761.14
1977 1188.00 659.00 592.00 280.50 276.42 a 15.50 g 3.50 6.50 136.00 379.50 724.00 860.50 5105.92
1978 998.00 715.50 518.50 359.00 197.50 18.50 0.50 0.00 z 105.00 409.50 927.00 1049.00 5298.00
1979 1499.50 792.00 540.50 0.00 z 116.00 0.00 z 10.50 0.00 19.50 0.00 z 801.50 804.00 4583.50
1980 1173.00 833.50 594.50 265.00 132.00 57.00 0.50 11.00 45.00 362.00 640.50 837.50 4951.50
1981 841.50 696.00 517.00 328.00 183.00 50.50 12.00 0.00 92.00 410.23 a 655.00 924.50 4709.73
1982 1036.00 709.00 612.50 472.50 199.00 49.00 11.00 0.00 73.00 399.50 757.00 909.00 5227.50
1983 779.00 597.50 436.00 348.00 139.50 24.00 4.50 1.00 118.00 378.50 542.00 1223.00 4591.00
1984 938.00 702.50 493.50 362.00 234.00 55.00 0.00 1.00 123.50 468.00 702.50 1129.00 5209.00
1985 1182.00 933.00 620.00 256.00 136.00 25.50 0.00 8.50 154.50 418.50 1070.00 1307.00 6111.00
1986 953.00 718.00 475.00 367.50 219.00 5.50 14.50 0.00 115.50 308.00 597.00 959.00 4732.00
1987 1021.00 665.50 488.00 228.00 80.50 26.00 4.00 0.00 42.00 345.00 573.00 943.50 4416.50
1988 969.50 694.00 549.50 294.00 151.50 72.50 2.50 0.00 94.00 193.00 544.00 954.50 4519.00
1989 793.50 1086.50 626.50 262.50 157.00 2.50 0.00 0.00 30.50 336.00 543.50 919.50 4758.00
1990 708.50 719.50 557.50 212.50 150.00 35.50 3.00 0.00 1.50 383.00 510.50 1167.50 4449.00
1991 1071.00 585.50 644.50 322.50 181.00 67.50 0.00 0.00 26.00 363.50 668.00 801.50 4731.00
1992 792.50 640.50 465.00 276.00 95.50 16.50 5.00 19.50 116.00 315.00 670.50 980.00 4392.00
1993 1253.00 962.50 707.50 347.50 76.50 26.00 3.00 14.50 85.50 290.00 847.50 853.50 5467.00
1994 770.50 787.50 496.00 238.00 95.50 21.00 5.50 0.00 13.50 335.00 698.00 840.00 4300.50
1995 983.50 594.00 588.50 377.00 118.00 44.50 0.00 5.50 19.50 380.00 559.00 899.50 4569.00
1996 982.00 909.00 609.50 302.50 212.00 19.50 0.50 0.00 98.00 351.50 739.50 1008.50 5232.50
1997 938.50 680.50 530.00 382.50 99.00 8.00 0.00 0.00 23.50 336.00 628.50 868.50 4495.00
1998 847.00 623.50 510.00 352.00 140.00 0.00 z 0.00 0.00 18.00 350.00 506.50 876.00 4223.00
1999 718.00 586.00 556.50 382.00 218.00 42.50 5.00 6.00 68.00 368.00 510.00 728.50 4188.50
2000 876.00 718.00 575.00 256.50 110.50 29.00 2.00 0.00 104.00 369.00 848.00 994.00 4882.00
2001 938.00 754.50 536.00 378.00 127.00 0.00 z 0.00 0.00 27.00 329.50 0.00 z 816.50 3906.50
2002 790.50 696.00 653.00 320.50 169.50 30.50 0.00 2.00 50.00 418.00 660.50 766.00 4556.50
2003 750.50 663.50 423.50 304.00 157.50 6.50 0.00 0.00 32.00 0.00 z 731.50 865.50 3934.50
2004 1069.50 770.50 396.50 266.50 94.00 28.50 0.00 0.00 35.00 269.50 672.00 805.50 4407.50
2005 1004.50 722.00 451.00 302.50 80.50 15.00 0.00 0.00 50.00 265.50 691.00 1058.00 4640.00
2006 679.00 739.00 546.00 319.50 147.77 a 5.50 0.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2436.77
Period of Record Statistics
MEAN 973.83 716.95 567.88 332.15 142.75 28.50 2.44 4.27 74.23 365.25 680.24 921.39 4790.37
S.D. 210.37 108.39 73.99 64.55 50.41 18.87 3.77 5.53 41.72 64.12 116.63 122.78 395.71
SKEW 0.89 0.86 -0.06 0.32 0.46 0.46 1.66 1.22 0.34 -0.34 0.91 0.79 0.87
MAX 1541.00 1086.50 716.00 472.50 276.42 72.50 14.50 19.50 178.00 498.00 1070.00 1307.00 6111.00
MIN 572.50 479.00 396.50 212.50 59.50 1.55 0.00 0.00 1.50 193.00 506.50 710.50 4188.50
NO YRS 58 57 58 57 57 55 55 54 57 56 57 57 44