WATERVILLE, WASHINGTON

Monthly Total Heating Degree Days

(459012)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200602
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
1931 1201.52 b 1053.00 891.50 570.00 274.00 183.50 31.00 32.50 286.00 572.50 1052.50 1391.00 7539.02
1932 1401.50 1168.50 899.50 566.00 407.50 149.50 111.00 82.50 184.00 526.50 838.00 1296.00 7630.50
1933 1248.50 1253.78 a 935.50 590.50 514.50 215.50 47.50 58.50 348.00 496.50 847.00 1040.50 7596.28
1934 1015.00 777.00 642.50 331.50 310.00 137.50 62.00 33.00 315.00 494.50 775.86 a 1173.50 6067.36
1935 1276.17 a 946.50 959.00 671.50 378.00 194.50 100.00 105.50 150.50 538.37 a 1079.50 1216.50 7616.03
1936 1241.50 1606.00 930.00 494.50 225.50 179.00 56.50 25.00 236.00 402.50 1035.50 1109.00 7541.00
1937 1797.00 1170.00 825.00 671.00 411.50 211.00 32.50 158.50 193.00 455.18 a 869.00 1149.07 a 7942.75
1938 1225.00 1093.00 945.50 562.00 361.50 144.50 32.50 108.00 118.00 521.00 966.50 1199.50 7277.00
1939 1071.50 1121.00 880.00 527.50 336.00 260.50 83.00 44.00 204.00 534.50 807.50 1023.00 6892.50
1940 1196.00 1010.00 774.50 0.00 z 390.00 128.50 34.50 56.00 137.50 513.00 1092.50 1167.00 6499.50
1941 1211.50 944.00 659.00 477.50 396.00 208.50 20.00 114.50 397.00 594.00 815.50 1138.50 6976.00
1942 1358.00 1028.00 913.00 516.50 446.50 282.00 60.00 73.50 177.00 517.50 1060.00 1230.50 7662.50
1943 1580.00 973.50 985.50 533.00 496.00 293.50 83.00 99.00 136.50 524.00 871.50 1162.00 7737.50
1944 1258.50 1086.50 922.00 589.00 349.50 197.00 80.00 80.00 182.00 359.50 936.50 1358.32 a 7398.82
1945 1178.00 943.50 930.00 653.50 363.00 269.00 58.00 74.50 279.50 478.00 1001.00 1216.00 7444.00
1946 1232.50 994.00 847.50 578.00 290.00 267.50 72.00 67.50 0.00 z 691.50 1080.50 1206.00 7327.00
1947 1364.00 910.50 697.00 520.00 227.50 228.50 70.00 80.00 207.00 597.78 a 857.00 1170.00 6929.28
1948 1270.50 1202.00 969.00 692.59 a 462.00 107.50 115.50 114.50 280.00 618.50 931.50 1417.50 8181.09
1949 1702.50 1177.00 874.50 495.50 251.00 199.00 79.50 71.00 188.50 648.50 726.50 1187.30 a 7600.80
1950 1849.50 1061.50 974.50 690.50 454.00 202.00 56.50 24.00 171.00 660.50 938.79 a 1093.00 8175.79
1951 1307.34 b 1057.50 1105.00 541.00 380.50 177.00 54.00 78.50 192.00 621.50 963.50 1398.21 b 7876.05
1952 1444.60 a 1087.50 953.25 a 517.50 327.50 208.00 54.00 69.00 122.00 344.00 1041.50 1232.00 7400.85
1953 1070.50 0.00 z 781.50 632.50 448.50 300.50 31.50 71.50 203.28 a 475.00 816.50 998.00 5829.28
1954 1363.50 942.50 945.00 710.00 341.50 282.00 73.00 103.50 244.00 637.50 751.07 b 1184.00 7577.57
1955 1291.50 1099.50 1111.50 753.50 496.50 166.00 107.00 28.50 232.00 600.50 1227.50 1395.00 8509.00
1956 1336.00 1353.00 1039.00 524.00 248.00 a 248.50 28.50 64.00 193.00 622.00 1053.00 1198.67 a 7907.67
1957 1642.50 1140.00 932.50 529.50 224.00 155.00 67.50 98.00 101.00 672.50 918.50 1048.32 a 7529.32
1958 1130.00 812.50 878.00 618.00 170.50 b 92.50 7.50 17.50 263.50 532.00 1018.00 1168.00 6708.00
1959 1292.50 1064.50 935.00 577.00 466.00 336.00 11.50 114.00 335.00 533.50 921.60 e 1136.00 7722.60
1960 1202.80 a 1078.00 917.50 549.50 441.50 148.50 9.00 155.50 237.50 352.00 g 944.00 1297.50 6981.30
1961 1230.00 924.50 878.50 617.50 412.50 101.50 0.00 z 6.50 273.00 712.00 1055.00 1287.00 7498.00
1962 1373.00 998.50 962.50 553.00 515.50 226.00 73.00 76.00 231.00 516.50 843.50 1246.72 a 7615.22
1963 1227.00 988.50 0.00 z 0.00 z 0.00 z 163.33 c 65.50 66.00 126.00 544.00 932.00 1299.00 5411.33
1964 1281.00 1072.00 906.50 648.00 416.00 171.00 65.50 134.50 309.00 608.50 991.50 1437.50 8041.00
1965 1221.50 979.50 942.50 552.00 402.50 125.36 b 42.22 b 62.53 b 249.00 473.50 862.00 1213.65 a 7126.27
1966 1316.50 961.50 926.00 527.00 283.50 212.00 49.50 44.50 112.50 594.00 845.50 1038.00 6910.50
1967 1016.00 814.50 915.00 749.00 402.00 108.00 26.00 7.00 87.00 600.00 904.00 1226.50 6855.00
1968 1240.50 879.50 732.50 650.50 353.50 166.50 46.50 134.50 208.50 700.50 0.00 z 1377.50 6490.50
1969 1694.00 1146.00 928.50 609.00 236.50 76.50 56.50 87.50 280.34 a 676.00 906.00 1216.00 7912.84
1970 1330.00 921.00 920.00 695.00 346.00 129.83 a 41.00 39.00 354.00 622.50 931.00 1369.50 7698.83
1971 1227.00 895.50 1036.50 0.00 z 282.62 a 253.50 95.50 28.00 366.00 638.50 943.50 1402.50 7169.12
1972 127.50 z 1127.50 812.00 732.50 311.50 146.00 69.00 42.50 365.00 593.50 872.31 d 1324.50 6396.31
1973 1341.27 a 973.50 770.50 540.00 336.00 199.00 46.50 50.50 218.50 607.50 1089.50 1092.00 7264.77
1974 1330.23 c 914.00 888.00 585.50 478.00 132.50 62.00 31.00 136.00 525.50 876.00 1109.00 7067.73
1975 1319.00 1144.00 1017.50 691.00 403.00 166.50 20.00 103.50 170.00 621.00 955.00 1143.00 7753.50
1976 1208.00 1065.50 1005.00 645.50 396.00 262.00 64.50 111.50 111.50 574.00 888.00 1171.50 7503.00
1977 1429.00 897.00 849.00 458.50 436.50 72.50 50.00 58.00 315.00 595.50 1020.00 1253.50 7434.50
1978 1239.00 977.00 817.50 580.50 397.00 99.00 15.50 114.00 291.00 570.00 1113.00 1413.50 7627.00
1979 1632.50 1084.00 788.00 0.00 z 0.00 z 0.00 z 0.00 z 4.50 116.50 437.00 1039.82 b 1038.50 6140.82
1980 0.00 z 1035.20 a 891.00 478.00 297.17 b 202.00 43.40 a 87.32 a 183.00 560.07 a 738.00 f 1200.50 4977.65
1981 1017.66 b 1003.33 a 714.72 d 591.21 a 344.88 c 235.18 b 71.00 17.50 228.50 632.00 886.50 1226.57 a 6969.04
1982 1358.32 a 1085.50 855.50 696.50 388.50 97.00 68.50 42.50 216.00 601.00 1111.00 1332.00 7852.32
1983 1068.50 909.50 744.00 573.50 268.00 147.50 90.00 23.00 305.00 592.50 907.00 1609.00 7237.50
1984 1208.50 1011.50 786.50 657.50 476.00 190.00 31.00 34.50 292.50 701.00 985.00 1547.00 7921.00
1985 1401.50 1169.50 921.00 496.50 272.50 116.50 0.00 36.00 357.50 634.50 1370.50 1490.00 8266.00
1986 1177.00 1073.50 768.00 582.00 348.00 42.50 75.00 0.00 314.00 512.50 930.00 1249.50 7072.00
1987 1310.00 944.00 771.50 420.00 260.00 0.00 z 0.00 z 32.50 117.50 490.50 859.50 0.00 z 5205.50
1988 1311.00 933.00 776.50 454.00 0.00 z 176.00 24.50 16.50 189.00 373.50 934.00 1299.93 a 6487.93
1989 1225.50 1249.00 979.50 466.50 310.50 74.00 41.00 0.00 z 0.00 z 608.00 833.00 1157.50 6944.50
1990 1063.50 1061.00 763.50 446.00 407.00 206.50 28.00 43.00 0.00 z 0.00 z 0.00 z 0.00 z 4018.50
1991 0.00 z 0.00 z 0.00 z 568.00 408.50 265.50 13.50 15.50 68.50 595.00 465.50 q 1004.00 2938.50
1992 688.50 m 986.50 332.00 o 474.00 175.50 32.50 14.00 44.00 225.00 506.33 a 931.50 1435.50 4824.83
1993 1471.00 1114.00 953.00 610.50 188.00 147.50 90.50 52.50 164.50 406.50 1007.00 1120.50 7325.50
1994 895.00 951.50 626.50 345.00 183.00 92.50 9.00 4.00 35.50 561.00 1034.00 1195.00 5932.00
1995 1189.50 882.00 808.00 549.50 202.00 121.50 16.50 103.50 100.50 600.50 830.50 1198.50 6602.50
1996 1362.00 1103.50 842.50 515.00 428.50 174.00 43.00 24.00 223.00 667.50 1094.50 577.00 q 6477.50
1997 401.50 t 499.50 p 1016.00 737.50 348.50 219.50 57.00 28.50 192.50 700.00 941.00 1178.00 5418.50
1998 1297.50 943.00 847.50 585.00 299.00 0.00 z 9.00 32.00 99.00 366.00 k 867.50 1258.50 6238.00
1999 1087.50 979.50 916.00 598.50 438.00 86.50 n 73.00 31.50 221.50 643.50 847.50 1128.00 6964.50
2000 1303.50 1032.00 873.50 473.50 391.50 147.69 d 59.62 e 57.57 c 285.00 c 657.00 1253.50 1454.00 7988.38
2001 1271.00 a 1161.00 883.00 663.50 325.50 270.50 66.50 36.17 a 144.00 677.00 894.50 939.50 h 6392.67
2002 1301.50 1131.50 1091.50 680.00 490.50 141.00 40.00 44.50 257.00 710.00 959.50 1137.50 7984.50
2003 1159.00 1028.00 822.50 649.00 412.00 87.50 0.00 z 87.50 83.50 h 382.50 1123.50 1285.50 7037.00
2004 1245.00 0.00 z 719.50 395.00 290.50 113.00 4.50 24.00 174.00 266.00 i 894.50 623.50 m 3860.00
2005 1226.00 868.50 684.50 519.00 287.00 149.50 0.00 z 14.00 223.00 552.00 1082.00 1362.50 6968.00
2006 1068.00 1076.00 0.00 z 559.14 a 327.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3030.14
Period of Record Statistics
MEAN 1287.79 1036.80 877.85 573.63 354.31 175.11 51.22 59.94 214.78 568.41 956.10 1236.12 7468.00
S.D. 177.58 129.32 107.05 91.96 88.03 66.11 27.81 38.09 81.31 88.48 117.81 132.24 519.85
SKEW 0.98 1.21 -0.22 -0.20 -0.22 0.16 0.15 0.57 0.15 -0.58 0.85 0.50 -0.77
MAX 1849.50 1606.00 1111.50 753.50 515.50 336.00 115.50 158.50 397.00 712.00 1370.50 1609.00 8509.00
MIN 895.00 777.00 626.50 331.50 170.50 32.50 0.00 0.00 35.50 344.00 726.50 998.00 5932.00
NO YRS 71 72 72 72 73 71 70 74 71 71 71 70 50