WATERVILLE, WASHINGTON

Monthly Total Heating Degree Days

(459012)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1893 1476.00 1314.00 795.00 j 724.66 a 424.50 269.50 58.00 51.50 295.86 a 702.00 1070.00 1091.00 7477.02
1894 1395.00 1258.44 a 148.50 y 631.50 393.50 217.50 39.00 21.50 323.50 673.50 850.50 1315.00 7118.94
1895 1363.00 992.00 870.50 0.00 z 410.23 a 151.50 59.00 62.52 a 417.00 498.50 956.00 1188.00 6968.25
1896 1278.50 1005.00 983.00 709.00 523.50 184.50 53.50 53.00 336.00 569.50 1244.00 1149.00 8088.50
1897 1388.00 1142.00 1216.50 525.50 198.50 221.50 171.00 30.50 302.50 586.50 1054.50 1370.00 8207.00
1898 1490.50 923.00 1010.50 545.00 243.00 k 219.00 54.50 0.00 z 91.50 i 181.50 x 1089.50 1406.00 6738.00
1899 1244.50 1190.00 954.00 634.00 504.00 171.50 44.00 158.50 154.00 690.50 750.50 1141.50 7637.00
1900 1153.00 1051.00 747.50 532.50 300.00 59.50 52.00 137.00 277.00 668.50 1054.00 988.00 7020.00
1901 1312.00 1146.00 904.00 622.50 343.07 a 287.00 72.50 1.00 350.00 381.50 898.45 a 1170.50 7488.51
1902 1350.00 1006.00 935.00 645.50 320.50 216.00 103.50 59.50 294.50 521.00 969.50 1309.50 7730.50
1903 1289.50 1209.00 1088.50 669.31 a 372.00 49.00 82.00 72.00 317.00 550.00 1031.50 1304.50 8034.31
1904 1281.00 1240.50 1168.00 627.50 387.50 151.00 58.90 a 48.50 178.00 500.00 768.62 a 1148.50 7558.02
1905 1266.00 1137.50 785.00 515.50 412.00 163.93 b 20.50 82.50 237.50 802.50 938.00 1278.50 7639.43
1906 1313.50 1048.00 1050.50 417.93 a 326.61 c 274.00 0.00 40.00 169.50 521.50 963.50 1207.00 7332.04
1907 1639.50 1073.00 610.00 l 663.50 292.50 237.50 60.00 124.00 i 220.71 b 370.97 a 833.00 1196.00 6586.68
1908 1311.50 1149.00 944.00 565.86 a 322.50 i 119.00 h 50.50 0.00 z 214.20 e 634.90 e 816.92 d 1306.98 c 6993.87
1909 1741.88 b 826.00 g 622.50 k 409.50 k 430.42 e 0.00 z 0.00 z 31.50 q 190.00 c 579.18 a 911.90 a 1480.52 b 5333.90
1910 1402.75 a 1270.00 690.50 0.00 z 235.60 a 219.64 b 28.50 52.00 h 258.33 c 528.50 1036.11 c 1248.55 b 6918.49
1911 1468.00 1231.00 860.50 619.50 462.00 155.17 a 32.00 47.00 357.93 a 591.58 a 791.50 g 906.00 j 5824.69
1912 1389.46 c 1050.98 b 1086.50 598.50 326.05 c 146.50 88.19 b 136.92 a 335.17 a 714.55 a 530.50 l 1189.88 a 7062.71
1913 1490.14 b 1242.00 1033.16 b 577.76 a 357.10 e 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4700.15
1914 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 289.00 483.00 651.00 h 1456.50 2228.50
1915 1362.50 970.00 776.00 437.50 396.00 165.50 60.50 8.50 247.50 513.00 1059.00 1238.00 7234.00
1916 1693.78 b 1152.00 928.40 b 547.50 468.00 228.50 148.00 66.50 197.00 567.50 1072.00 1399.50 8468.67
1917 1332.50 1169.00 1086.00 729.50 386.50 219.50 42.00 8.00 171.00 465.50 783.50 1103.00 7496.00
1918 1132.50 1126.00 920.00 548.50 412.00 88.00 40.50 94.50 46.50 496.00 886.50 1159.50 6950.50
1919 1245.50 1175.00 992.50 597.00 464.00 262.50 27.50 17.00 213.00 660.50 1060.00 1412.50 8127.00
1920 0.00 z 0.00 z 0.00 z 0.00 z 374.50 g 67.00 u 24.00 85.00 263.50 657.00 899.50 1174.50 3103.50
1921 1273.00 1054.50 880.00 658.00 326.50 144.50 65.50 57.50 389.48 a 510.00 952.50 1291.67 a 7603.15
1922 1521.00 1293.00 1058.00 669.00 418.00 41.50 4.13 a 50.00 165.50 489.00 1038.00 1535.00 8282.13
1923 1240.00 a 1204.50 887.00 543.00 364.50 201.50 38.23 a 20.50 152.00 547.00 848.50 1215.00 7261.73
1924 1435.50 913.50 847.50 595.00 178.50 149.00 50.00 50.00 238.50 571.50 1060.00 1376.73 c 7465.73
1925 1211.50 898.00 763.50 480.00 299.50 165.50 12.00 100.50 207.50 581.00 972.00 1013.00 6704.00
1926 1240.50 888.00 670.00 412.50 396.50 123.62 a 12.00 63.00 441.00 584.50 0.00 z 0.00 z 4831.62
1927 1389.50 1040.00 941.00 644.00 470.00 101.50 39.00 67.50 276.50 564.50 925.50 1417.00 7876.00
1928 1258.50 1021.00 809.62 a 683.00 252.50 170.50 25.00 36.00 189.50 548.18 a 917.00 1273.00 7183.80
1929 1626.43 b 1259.50 772.50 671.50 388.50 167.59 a 34.50 27.00 266.50 475.50 939.50 1112.00 7741.02
1930 1775.02 b 958.50 778.50 463.50 406.50 235.50 47.00 32.00 186.50 642.50 985.00 1283.00 7793.52
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 1034.16 a 719.50 395.00 290.50 113.00 4.50 24.00 174.00 266.00 i 894.50 623.50 m 4894.16
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 557.50 332.50 114.50 12.50 22.00 173.50 551.00 1033.50 1312.00 6253.00
2007 1397.50 991.50 797.70 c 582.00 302.50 166.00 4.50 46.00 180.00 656.00 965.50 1275.50 7364.70
2008 1201.00 f 0.00 z 914.00 720.00 283.50 208.00 22.50 73.50 173.50 623.00 895.50 1479.22 a 5392.72
2009 1227.00 1041.00 964.50 588.50 337.00 114.00 22.50 32.00 171.00 704.00 911.50 1418.00 7531.00
2010 1083.00 0.00 z 794.50 617.00 488.00 227.50 45.50 72.50 217.50 543.00 1073.00 924.00 i 5161.50
2011 1272.00 1123.50 929.00 758.00 494.97 a 227.00 100.00 10.50 139.50 579.00 1002.00 1189.00 7824.47
2012 1258.00 1018.00 885.50 572.00 408.88 b 256.50 29.00 25.00 102.00 578.84 b 905.17 a 1146.00 7184.90
2013 1387.00 910.50 816.00 19.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 45.00 z 3113.50
Period of Record Statistics
MEAN 1317.16 1058.14 889.59 582.36 361.35 176.62 50.18 58.06 224.35 570.47 957.69 1245.92 7515.74
S.D. 173.82 128.52 115.29 90.26 86.12 64.31 30.61 37.46 83.04 87.78 112.04 131.48 488.66
SKEW 0.81 0.74 0.10 -0.27 -0.28 -0.02 0.89 0.71 0.23 -0.32 0.64 0.35 -0.65
MAX 1849.50 1606.00 1216.50 758.00 523.50 336.00 171.00 158.50 441.00 802.50 1370.50 1609.00 8509.00
MIN 895.00 777.00 626.50 331.50 170.50 32.50 0.00 0.00 35.50 344.00 726.50 988.00 5932.00
NO YRS 113 113 111 111 113 111 112 112 114 114 111 111 78