POMEROY, WASHINGTON

Monthly Total Heating Degree Days

(456610)

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 40.34 a 56.50 31.00 167.50 452.50 751.00 1121.00 2619.84
1949 1163.50 g 873.50 672.50 335.00 191.50 92.50 15.00 32.50 128.50 580.00 589.50 957.00 4467.50
1950 1496.00 844.50 750.00 574.44 c 344.50 140.00 11.50 19.50 136.50 430.50 708.50 755.50 6211.44
1951 963.00 809.00 830.00 473.00 290.50 139.00 21.50 49.50 129.50 464.00 765.00 1065.00 5999.00
1952 1108.00 802.50 751.00 414.00 230.36 b 0.00 z 43.00 48.50 90.50 270.50 896.50 915.50 5570.36
1953 625.50 713.00 679.00 510.00 331.50 209.50 25.00 30.50 113.50 338.00 591.00 813.50 4980.00
1954 989.00 723.00 829.00 523.00 268.50 218.50 39.50 49.50 177.50 480.00 575.00 961.50 5834.00
1955 1025.50 866.50 899.00 622.00 408.00 84.50 76.00 20.50 198.10 a 400.00 930.50 1016.00 6546.60
1956 937.50 1102.00 b 759.00 415.00 258.00 165.00 22.00 52.00 126.00 481.50 902.00 918.50 6138.50
1957 1413.50 841.04 a 706.50 495.50 242.00 96.00 29.00 51.50 115.50 502.50 786.50 785.50 6065.04
1958 863.19 b 560.00 774.50 535.50 137.43 a 77.50 21.00 2.50 186.00 397.00 693.50 841.13 a 5089.26
1959 922.00 840.50 338.50 n 443.50 411.78 a 122.59 a 55.28 a 80.00 254.00 507.50 937.50 1004.40 a 5579.05
1960 1287.50 887.09 a 764.00 275.00 m 180.50 q 122.00 10.00 90.50 148.00 417.50 718.00 1063.00 5507.59
1961 961.50 621.00 665.31 e 526.50 317.75 a 52.00 17.00 0.50 269.50 514.50 911.00 940.85 a 5797.41
1962 1059.50 792.50 804.50 395.50 417.00 165.00 64.00 60.00 151.50 440.00 673.50 847.00 5870.00
1963 1257.00 686.00 665.50 542.50 299.50 119.00 49.00 40.00 80.50 344.50 647.50 1037.50 5768.50
1964 850.50 821.50 771.50 583.50 375.50 136.50 32.00 78.00 240.00 433.50 774.50 1025.00 6122.00
1965 947.50 0.00 z 0.00 z 376.50 277.00 77.59 a 24.28 a 29.50 225.00 278.00 592.80 e 919.50 3747.67
1966 903.00 750.00 648.50 447.00 199.00 112.50 25.00 20.00 f 42.12 d 442.94 e 642.69 d 823.00 5035.75
1967 778.00 653.00 714.00 618.50 296.00 40.71 b 0.50 0.00 34.00 355.50 578.50 h 959.00 4449.21
1968 904.00 675.50 523.50 536.00 209.00 87.50 1.50 41.00 124.50 454.00 698.79 a 1065.50 5320.79
1969 1302.00 836.00 697.00 430.50 185.50 49.50 28.00 26.00 84.50 470.88 b 715.00 917.50 5742.38
1970 973.00 684.50 741.00 615.00 236.50 75.50 6.50 1.15 d 177.50 g 411.50 g 728.50 963.50 5025.15
1971 839.50 705.50 758.00 474.00 225.50 139.00 g 28.62 e 3.50 220.71 b 303.50 k 431.50 l 662.50 j 3255.33
1972 687.50 j 815.00 586.00 551.50 219.07 a 66.50 20.00 16.02 a 220.00 456.00 702.50 1142.50 4795.08
1973 1019.00 726.50 630.50 479.00 219.00 100.00 7.00 21.50 106.50 324.50 i 770.00 825.63 a 4904.63
1974 1120.81 b 661.50 652.50 419.50 392.87 e 59.50 0.00 z 8.00 63.00 381.00 679.50 853.02 a 5291.19
1975 1005.95 a 806.50 813.20 c 601.00 289.69 b 138.10 a 5.50 40.00 91.73 d 385.00 725.19 d 868.52 a 5770.38
1976 709.50 g 800.00 781.50 488.50 220.00 158.00 5.00 43.50 32.50 414.50 706.00 686.00 i 3649.50
1977 1166.50 657.50 688.00 322.00 356.00 28.00 17.50 27.00 183.50 405.00 724.00 879.00 5454.00
1978 919.67 d 679.50 544.00 429.00 306.90 a 31.50 3.50 44.50 135.50 392.00 898.00 1099.50 5483.57
1979 1506.50 797.00 628.00 466.00 202.00 66.00 16.50 0.00 a 38.00 316.00 843.00 806.52 a 5685.52
1980 1188.50 791.80 a 692.00 308.50 258.00 154.50 4.00 59.00 86.50 409.00 705.50 782.00 5439.30
1981 864.50 734.50 604.50 450.00 296.00 131.00 26.50 1.00 150.00 457.77 a 656.90 a 861.00 5233.66
1982 982.50 781.50 679.00 542.50 261.00 78.00 37.00 2.00 137.00 430.50 857.50 965.50 5754.00
1983 753.50 605.50 555.50 489.00 257.50 94.50 30.50 0.00 178.50 402.50 660.00 1302.00 5329.00
1984 956.50 811.00 617.50 534.50 336.50 135.00 6.50 5.50 174.00 556.45 a 926.50 1382.50 6442.45
1985 1271.53 b 491.00 j 671.48 c 476.50 347.00 47.00 0.00 12.00 232.50 462.50 705.50 l 907.50 l 3520.52
1986 643.00 j 774.00 501.17 a 446.00 243.00 21.50 24.00 0.00 218.00 369.00 370.50 o 1036.00 3632.67
1987 1103.00 752.50 628.00 288.00 181.00 88.50 37.20 a 6.00 k 61.50 151.00 o 383.00 n 0.00 z 3139.70
1988 428.00 p 553.50 i 749.00 402.00 255.00 144.00 23.00 39.50 187.00 283.00 718.50 1049.00 3850.00
1989 950.50 1118.50 715.50 415.50 348.50 54.00 17.50 32.00 81.50 411.00 582.00 906.00 5632.50
1990 762.50 755.50 553.50 255.00 246.00 82.50 9.00 33.50 60.50 447.00 611.00 1188.50 5004.50
1991 1063.50 581.00 736.77 a 436.50 282.00 95.50 j 5.00 4.50 k 12.00 j 446.00 717.50 472.50 m 4268.27
1992 557.00 i 420.50 j 365.50 i 207.00 k 113.50 m 45.50 11.50 35.00 136.03 a 266.00 i 544.00 i 1006.39 c 1234.43
1993 581.50 p 623.00 i 695.50 482.50 134.50 98.50 63.50 76.00 179.00 358.00 964.00 928.45 a 3979.95
1994 760.00 869.00 593.50 357.32 b 227.00 96.00 34.00 17.00 68.50 482.50 828.89 c 938.50 5272.21
1995 956.00 717.00 670.00 516.50 288.50 171.00 26.00 87.50 116.00 558.00 603.00 996.50 5706.00
1996 976.00 0.00 z 750.50 445.50 415.00 135.50 34.50 36.00 258.00 496.50 769.50 974.00 5291.00
1997 1005.50 794.50 668.00 0.00 z 264.50 152.50 46.50 10.00 129.31 a 428.50 684.50 1037.50 5221.31
1998 871.50 686.00 680.50 496.50 340.50 134.50 0.00 22.50 100.50 507.00 654.00 984.25 a 5477.75
1999 829.00 726.00 741.00 598.00 428.50 199.04 d 57.50 39.50 219.00 499.00 589.66 a 895.26 b 5821.45
2000 983.22 a 777.50 744.00 418.00 304.50 142.78 c 52.00 67.17 a 224.50 568.00 1017.00 1083.50 6382.16
2001 1055.55 a 883.50 668.00 588.50 309.50 210.52 a 35.50 36.00 109.44 c 497.03 a 677.50 1013.46 e 6084.51
2002 948.00 805.00 864.50 547.00 372.50 144.00 34.50 64.50 198.00 625.50 780.00 902.00 6285.50
2003 826.50 809.00 650.00 529.50 360.00 94.00 14.00 8.00 f 119.50 362.00 847.76 a 990.00 5602.26
2004 1109.50 0.00 z 585.00 467.00 331.00 147.50 16.50 36.50 227.40 e 469.50 785.00 912.00 5086.90
2005 959.00 823.50 683.00 520.50 293.00 193.00 23.50 36.88 b 318.60 e 460.00 855.00 a 1121.17 a 6287.15
2006 762.50 867.00 762.00 542.50 345.50 111.96 b 4.50 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3391.46
Period of Record Statistics
MEAN 1001.64 774.42 694.30 476.30 287.21 110.31 25.38 33.10 147.95 437.57 745.54 970.68 5758.50
S.D. 186.87 105.82 85.37 85.36 71.46 49.79 18.23 24.47 67.17 75.08 112.79 124.66 421.41
SKEW 0.84 0.82 -0.05 -0.45 0.07 0.23 0.73 0.46 0.26 -0.04 0.49 0.88 -0.05
MAX 1506.50 1118.50 899.00 622.00 428.50 218.50 76.00 90.50 318.60 625.50 1017.00 1382.50 6546.60
MIN 625.50 560.00 501.17 255.00 134.50 21.50 0.00 0.00 32.50 270.50 575.00 755.50 4980.00
NO YRS 51 51 55 55 56 56 57 54 56 53 52 53 33