COLVILLE BASIC, WASHINGTON

Monthly Total Heating Degree Days

(451630)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1899 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 59.50 440.00 472.00 775.00 1746.50
1900 0.00 z 1007.00 671.50 431.50 329.00 111.00 72.00 158.00 360.50 585.90 a 1015.50 898.00 5639.90
1901 1224.50 1004.50 794.00 668.50 301.50 315.50 89.00 24.00 354.00 450.00 830.00 1096.50 7152.00
1902 1245.00 882.00 838.50 584.00 314.50 254.00 137.00 124.50 318.62 a 436.00 929.00 1156.50 7219.62
1903 1155.00 1199.00 860.50 626.50 338.00 55.00 108.00 70.50 365.00 603.50 959.50 1131.50 7472.00
1904 1190.00 1029.50 982.00 488.00 347.00 178.50 80.00 70.00 266.00 572.00 770.50 1089.00 7062.50
1905 1164.50 1111.00 685.50 494.00 379.50 171.00 66.50 79.50 214.50 746.00 973.00 1123.00 7208.00
1906 1175.00 911.50 938.00 400.50 297.00 215.00 0.00 69.00 258.50 537.00 981.00 1102.00 6884.50
1907 1568.50 956.50 837.50 607.50 294.50 184.50 67.00 158.00 253.00 469.50 834.00 1083.50 7314.00
1908 1221.00 1041.50 826.00 489.00 367.00 138.50 40.00 91.50 214.50 608.00 807.00 1238.50 7082.50
1909 1473.50 924.00 787.50 632.50 379.00 132.00 72.00 78.50 220.86 a 546.63 a 850.50 1322.50 7419.50
1910 1298.50 1159.00 632.92 a 393.00 223.50 195.00 23.50 164.00 256.00 513.50 831.50 1034.50 6724.92
1911 1372.50 1080.00 745.50 550.00 380.27 a 113.50 30.00 76.00 298.00 653.00 1048.50 1243.50 7590.77
1912 1432.00 965.00 897.00 499.00 281.67 b 35.50 v 61.00 108.50 341.00 703.00 864.00 1159.00 7311.17
1913 1370.50 1256.50 853.57 b 532.00 324.50 95.50 87.50 67.50 297.00 718.50 846.00 1139.77 a 7588.84
1914 1051.00 1010.00 706.00 477.00 260.00 167.00 15.50 38.50 286.50 561.50 821.50 1420.50 6815.00
1915 1315.50 869.00 654.00 381.00 300.00 164.50 40.50 7.00 301.50 541.50 999.50 1231.50 6805.50
1916 1650.50 1056.50 803.00 494.50 350.50 130.00 31.00 41.00 235.00 611.00 1071.00 1473.50 7947.50
1917 1366.50 1030.00 997.00 626.00 303.50 182.00 25.00 13.00 196.50 572.00 785.50 1132.00 7229.00
1918 1115.50 1047.00 731.50 503.50 379.00 95.00 11.00 87.00 67.50 447.00 893.50 1142.50 6520.00
1919 1148.00 948.50 802.50 459.50 318.00 189.00 26.50 30.00 237.50 686.50 1013.00 1359.50 7218.50
1920 1249.00 948.50 785.50 570.00 352.00 163.50 4.00 69.00 239.00 583.50 849.50 1057.50 6871.00
1921 1167.50 929.50 757.00 568.00 263.00 74.00 21.50 31.00 323.00 480.50 953.00 1233.50 6801.50
1922 1419.00 1214.00 870.00 551.90 a 331.50 25.00 4.50 33.00 150.00 467.00 944.00 1415.00 7424.90
1923 1081.50 1200.00 802.50 469.00 270.00 131.00 15.50 24.28 a 166.50 511.50 872.00 1099.95 c 6643.73
1924 1420.00 774.00 791.50 532.50 170.50 110.00 26.50 55.50 197.00 546.50 926.00 1361.50 6911.50
1925 1194.00 767.50 717.50 411.00 218.00 118.50 0.00 67.50 178.50 614.00 927.00 942.00 6155.50
1926 1151.00 632.00 f 632.00 366.00 293.00 101.00 6.00 40.62 b 393.00 509.50 839.50 1164.00 5495.62
1927 1276.50 979.50 798.00 534.00 368.00 79.00 40.50 67.50 258.00 513.00 896.50 1477.00 7287.50
1928 1226.00 1001.50 718.50 555.50 205.00 131.50 13.00 63.00 211.50 547.00 910.50 1215.00 6798.00
1929 1575.50 1288.50 742.00 594.00 281.00 138.00 25.00 24.50 276.00 512.00 1098.50 1068.00 7623.00
1930 1693.00 933.00 729.00 353.00 335.00 155.50 21.00 14.50 168.00 609.00 969.00 1173.00 7153.00
1931 1021.00 955.50 706.50 482.50 210.50 118.00 0.00 26.00 255.50 542.50 974.00 1201.50 6493.50
1932 1311.00 1156.00 869.50 456.00 314.00 91.00 54.50 65.50 213.50 559.00 850.50 1325.50 7266.00
1933 1232.00 1282.50 857.50 504.00 364.00 142.00 26.50 63.00 319.00 547.00 822.00 996.50 7156.00
1934 1020.50 823.50 675.00 301.50 241.50 101.50 21.50 14.00 333.00 519.50 736.00 1113.50 5901.00
1935 1272.50 975.50 867.00 577.50 282.00 120.00 53.50 77.00 151.50 631.50 1012.50 1058.00 7078.50
1936 1158.50 1497.00 840.00 424.00 175.50 89.00 10.00 27.00 233.50 517.00 1087.00 1096.00 7154.50
1937 1841.50 1157.50 801.50 558.00 290.50 115.00 8.50 131.00 221.50 490.50 817.50 1099.50 7532.50
1938 1152.50 941.50 823.00 490.00 316.00 88.50 21.50 110.00 106.00 531.00 1019.00 1208.50 6807.50
1939 1085.00 1152.50 782.50 419.00 259.50 216.00 46.00 26.50 213.00 598.00 909.50 985.00 6692.50
1940 1221.50 937.50 661.00 449.00 225.00 85.50 12.00 35.50 127.50 484.50 1032.50 1110.00 6381.50
1941 1082.50 854.50 649.00 376.00 312.50 128.00 5.00 76.50 360.50 607.50 831.50 1072.50 6356.00
1942 1334.50 937.00 793.50 448.50 359.50 201.50 40.00 61.00 205.00 572.00 986.00 1123.50 7062.00
1943 1473.00 968.50 956.00 435.00 422.63 a 204.50 46.50 79.50 198.00 537.85 a 886.50 1219.00 7426.98
1944 1284.78 d 1037.50 891.00 470.50 267.50 101.50 39.50 51.50 200.50 456.50 877.50 1226.00 6904.28
1945 1094.00 881.50 808.50 611.00 254.00 145.50 12.00 15.00 310.50 542.00 940.50 1172.00 6786.50
1946 1210.00 991.00 757.00 466.50 220.00 179.50 19.00 39.00 272.50 700.50 1023.50 1171.50 7050.00
1947 1360.50 912.50 725.50 494.00 193.50 134.50 30.50 56.50 187.00 492.50 929.00 1113.00 6629.00
1948 1309.50 1084.50 857.50 569.00 293.00 21.00 e 52.00 57.00 237.50 622.00 915.50 1436.50 7455.00
1949 1815.57 a 1203.50 834.50 410.50 175.00 113.00 27.00 40.50 168.50 642.50 732.50 1168.50 7331.57
1950 1807.00 998.50 898.50 565.50 317.50 95.50 8.00 4.00 168.50 585.00 899.00 992.50 7339.50
1951 1217.00 993.50 923.00 504.83 a 225.00 120.50 10.50 37.00 204.50 586.50 901.00 1376.00 7099.33
1952 1242.50 1024.50 857.50 433.50 248.50 98.00 30.00 53.00 128.50 448.50 1007.00 1068.50 6640.00
1953 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1954 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1955 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1956 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1957 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1959 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1960 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1961 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1962 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1963 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1964 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1965 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1966 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1967 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1968 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1969 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1970 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1972 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1973 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1974 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1975 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1976 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1977 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1978 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1979 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1980 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1981 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1982 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1983 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1984 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1985 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1986 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1987 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1988 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1989 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1990 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1991 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1992 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1993 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 113.00 54.00 184.50 420.50 0.00 z 1090.00 1862.00
1994 951.81 d 957.00 443.00 i 401.00 209.00 132.00 13.50 9.76 d 74.40 e 515.50 979.00 1105.50 5348.47
1995 715.50 k 558.00 i 565.00 h 339.50 h 183.50 f 59.50 k 6.50 62.50 103.50 579.00 818.00 1095.16 b 2664.66
1996 1200.00 989.50 748.50 485.00 403.00 102.00 21.50 27.50 217.00 557.50 930.00 747.00 k 5681.50
1997 1181.00 921.00 764.00 562.00 201.50 100.00 18.50 20.00 93.00 533.50 815.00 1061.00 6270.50
1998 1068.50 749.00 664.00 443.00 183.00 68.50 0.00 11.50 57.00 532.00 710.50 1089.50 5576.50
1999 974.50 811.00 724.50 519.00 377.00 143.00 58.50 15.50 176.00 519.50 698.00 980.50 5997.00
2000 1127.50 887.09 a 720.50 405.50 317.00 92.00 41.00 39.00 197.00 516.50 988.00 1201.50 6532.59
2001 1111.00 943.00 713.00 542.00 240.00 155.50 17.00 7.50 66.00 584.50 718.00 1047.00 6144.50
2002 1071.00 842.50 848.50 491.00 340.50 87.50 17.00 16.50 160.00 572.50 802.50 943.00 6192.50
2003 930.50 813.00 686.00 386.50 f 292.50 49.50 0.00 z 4.00 84.50 f 0.00 z 0.00 z 0.00 z 2775.50
2004 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 13.95 a 187.50 486.00 858.00 1034.00 2579.45
2005 1198.00 875.00 660.00 440.50 176.50 118.50 3.50 7.00 h 0.00 z 0.00 z 0.00 z 0.00 z 3472.00
2006 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 868.50 0.00 z 868.50
2007 1216.15 e 872.00 759.50 e 510.50 109.00 o 91.50 0.00 12.00 177.00 550.00 915.00 1148.00 6251.65
2008 1278.50 910.50 816.50 602.07 a 218.50 134.48 a 5.50 33.00 156.50 557.00 826.50 1324.00 6863.05
2009 1240.50 936.00 864.00 545.00 271.00 60.50 13.50 16.00 86.00 670.67 e 832.50 1307.00 6842.67
2010 982.00 735.50 686.00 454.50 368.00 110.50 35.50 41.50 137.00 456.00 931.50 1116.50 6054.50
2011 1183.50 1050.50 751.00 621.00 310.00 133.00 25.50 8.50 106.00 528.00 946.00 1141.50 6804.50
2012 1162.50 944.50 756.50 424.50 269.50 134.50 7.50 11.50 75.50 524.50 768.50 988.50 6068.00
2013 1197.00 853.00 700.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2750.00
Period of Record Statistics
MEAN 1255.24 991.02 783.84 496.11 289.69 128.47 31.89 50.66 211.71 552.29 892.63 1150.93 6898.59
S.D. 196.53 141.05 86.58 77.98 63.31 50.79 29.19 37.73 83.44 70.51 105.87 136.82 491.02
SKEW 1.19 0.90 0.28 0.00 -0.12 0.84 1.45 1.15 0.07 0.53 -0.79 0.36 -0.48
MAX 1841.50 1497.00 997.00 668.50 422.63 315.50 137.00 164.00 393.00 746.00 1098.50 1477.00 7947.50
MIN 930.50 735.50 632.00 301.50 170.50 21.00 0.00 4.00 57.00 420.50 472.00 775.00 5576.50
NO YRS 69 69 69 68 68 68 70 71 71 71 71 70 61