COLVILLE, WASHINGTON

Monthly Total Heating Degree Days

(451630)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200508
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
1917 0.00 z 0.00 z 0.00 z 356.00 l 303.50 182.00 25.00 13.00 196.50 572.00 785.50 1132.00 3209.50
1918 1115.50 1047.00 726.50 503.50 379.00 95.00 11.00 87.00 67.50 447.00 893.50 1137.50 6510.00
1919 1148.00 948.50 788.50 459.50 318.00 186.50 26.50 30.00 237.50 686.50 1013.00 1359.50 7202.00
1920 1253.00 948.50 782.00 570.00 352.00 173.50 4.00 69.00 239.00 583.50 849.50 1057.50 6881.50
1921 1156.50 929.50 757.00 568.00 263.00 74.00 21.50 31.00 319.00 480.50 950.50 1233.50 6784.00
1922 1418.00 1214.00 870.00 555.50 331.50 25.50 4.50 33.00 150.50 467.00 944.00 1415.00 7428.50
1923 1083.00 1200.00 805.00 469.00 269.50 129.50 15.50 25.12 b 166.50 511.50 869.50 1095.00 6639.12
1924 1425.00 774.00 791.50 532.50 170.50 109.00 26.50 55.50 198.50 546.50 926.00 1361.50 6917.00
1925 1184.72 a 767.50 717.50 411.00 218.00 118.50 0.00 67.50 177.50 614.00 927.00 946.00 6149.22
1926 1151.00 811.50 637.00 366.00 294.00 96.00 6.00 49.00 383.00 509.50 836.00 1163.50 6302.50
1927 1268.50 953.50 804.00 542.00 371.00 75.00 34.50 38.50 261.00 515.50 896.00 1483.00 7242.50
1928 1225.50 1001.50 712.50 555.50 205.00 131.50 13.00 63.00 211.50 554.00 911.00 1215.50 6799.50
1929 1572.00 1287.50 741.00 584.00 280.50 133.50 25.00 24.50 276.50 512.00 1098.50 1073.00 7608.00
1930 1693.00 931.50 726.50 353.00 335.00 155.50 21.50 14.50 168.00 609.00 969.00 1173.00 7149.50
1931 1021.00 955.50 706.50 482.50 202.00 108.00 0.00 26.00 255.50 542.50 980.50 1200.50 6480.50
1932 1311.00 1156.00 869.50 456.00 314.00 91.00 54.50 64.50 213.50 553.50 850.50 1328.00 7262.00
1933 1232.00 1271.50 857.50 504.00 364.00 142.00 26.50 63.00 319.00 552.00 822.00 990.50 7144.00
1934 1020.50 828.50 672.50 301.50 241.50 98.50 21.50 14.00 333.00 519.50 736.00 1113.50 5900.50
1935 1272.50 975.50 867.00 577.50 282.00 120.00 53.50 75.00 153.50 626.50 1012.50 1058.00 7073.50
1936 1152.50 1494.50 840.00 427.00 178.00 89.00 10.00 27.00 233.50 512.50 1087.00 1100.00 7151.00
1937 1842.50 1157.50 801.50 558.00 290.50 120.00 8.50 128.50 221.50 492.50 817.50 1097.50 7536.00
1938 1153.00 943.00 822.00 486.00 316.00 92.50 21.50 110.00 106.00 529.00 1019.00 1206.50 6804.50
1939 1086.00 1152.50 780.68 a 419.00 259.50 216.00 46.00 26.50 213.00 598.00 909.50 985.00 6691.68
1940 1221.50 937.50 660.00 449.00 226.50 83.50 12.00 35.50 127.50 484.50 1030.00 1110.00 6377.50
1941 1082.50 854.50 649.00 376.00 312.50 128.00 6.00 76.50 360.50 607.50 831.50 1068.50 6353.00
1942 1334.50 937.00 793.50 448.50 359.50 201.50 40.00 61.00 205.00 572.00 983.00 1123.50 7059.00
1943 1473.00 968.50 956.00 435.00 420.00 203.50 46.50 79.00 197.50 547.50 886.50 1212.50 7425.50
1944 1296.00 1037.50 891.00 470.50 267.50 101.50 39.50 51.50 200.50 458.50 877.50 1226.00 6917.50
1945 1094.00 881.50 808.50 611.00 254.00 145.50 12.00 15.00 310.50 538.50 940.50 1172.00 6783.00
1946 1210.50 991.00 757.00 466.50 220.00 179.50 19.00 39.00 272.50 700.50 1023.50 1171.50 7050.50
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 24.50 49.50 57.00 237.50 622.00 919.00 1434.50 7457.50
1949 1811.95 a 1197.50 833.50 400.50 175.00 113.00 27.00 40.50 168.50 643.00 734.00 1168.50 7312.95
1950 1812.00 998.50 898.50 565.50 319.50 95.50 8.00 4.00 168.50 585.00 899.00 992.50 7346.50
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
Period of Record Statistics
MEAN 1245.87 985.68 777.63 481.68 278.10 118.25 23.77 42.13 199.69 545.49 899.61 1148.03 6800.53
S.D. 217.59 154.00 79.65 71.27 67.00 42.70 20.46 27.71 76.02 60.04 97.81 129.06 491.62
SKEW 1.31 1.05 0.15 -0.28 0.13 0.24 1.95 0.87 0.26 0.36 -0.19 0.82 -0.41
MAX 1842.50 1494.50 956.00 611.00 420.00 216.00 113.00 128.50 383.00 700.50 1098.50 1483.00 7608.00
MIN 930.50 749.00 637.00 301.50 170.50 24.50 0.00 4.00 57.00 420.50 698.00 943.00 5576.50
NO YRS 45 45 44 44 46 46 47 48 47 47 46 46 41