CONCONULLY, WASHINGTON

Monthly Total Heating Degree Days

(451666)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200510
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 81.21 a 111.50 123.50 306.00 661.50 976.00 1528.00 3787.71
1949 1764.00 1279.00 906.23 a 521.00 246.50 202.24 a 65.00 66.65 a 205.50 676.00 780.00 1297.00 8009.12
1950 1973.50 1087.00 1008.53 a 690.50 424.00 162.00 38.00 29.00 182.50 679.00 1001.50 1083.00 8358.53
1951 1375.00 1096.00 1115.50 581.00 328.08 a 176.50 37.50 88.00 225.50 658.50 1003.00 1497.00 8181.58
1952 1504.00 1087.50 974.00 532.00 331.50 175.00 58.00 78.00 134.00 424.50 995.00 1150.00 7443.50
1953 1068.00 934.00 852.50 623.50 392.50 264.50 44.50 71.00 206.00 527.50 822.00 1067.00 6873.00
1954 1450.00 962.50 978.50 701.50 325.00 287.00 66.00 110.50 261.50 666.50 753.50 1207.50 7770.00
1955 1299.00 1153.00 1170.50 745.00 473.00 154.00 106.50 49.00 262.50 628.00 1242.50 1426.50 8709.50
1956 1271.50 1395.00 1067.50 538.00 252.00 219.50 33.58 a 56.50 209.50 645.50 1062.00 1226.00 7976.58
1957 1751.00 1174.50 904.50 544.50 194.00 147.00 80.00 96.50 109.50 655.00 933.50 1094.00 7684.00
1958 1104.50 794.50 845.00 554.50 0.00 z 0.00 z 3.00 1.50 238.50 480.00 1055.50 1152.00 6229.00
1959 1204.00 1113.00 847.00 551.00 392.00 129.50 24.50 g 56.00 0.00 z 578.67 a 1028.50 1178.00 7077.67
1960 1448.00 1066.50 893.00 551.00 354.00 130.50 10.50 182.00 223.00 481.50 927.00 1274.00 7541.00
1961 1178.50 843.50 797.50 563.50 342.55 a 0.00 z 0.00 z 13.50 404.00 646.00 1115.00 1252.50 7156.55
1962 1347.50 942.50 954.00 489.50 389.00 184.00 126.00 107.50 0.00 z 559.00 808.00 1011.00 6918.00
1963 1332.00 753.00 789.00 630.00 291.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 871.00 1189.00 5855.50
1964 1193.50 1099.41 a 962.00 614.44 c 442.50 0.00 z 0.00 z 0.00 z 239.50 0.00 z 0.00 z 0.00 z 4551.35
1965 1163.50 1021.48 a 975.00 590.50 0.00 z 0.00 z 0.00 z 68.50 358.00 0.00 z 0.00 z 0.00 z 4176.98
1966 0.00 z 0.00 z 939.00 0.00 z 284.50 0.00 z 39.86 c 58.50 100.56 c 574.00 844.00 1061.50 3901.91
1967 1046.50 811.00 0.00 z 711.67 c 330.50 62.07 a 0.00 z 7.23 a 87.41 a 620.00 848.00 1250.00 5774.38
1968 1247.23 a 894.50 746.14 b 613.00 284.17 a 136.00 22.00 122.00 198.62 a 620.00 a 849.50 1347.47 a 7080.63
1969 1726.00 1154.74 a 917.27 c 534.31 a 212.35 a 62.50 74.92 a 65.00 212.00 614.00 909.50 1179.50 7662.09
1970 1350.50 891.00 863.50 630.00 b 299.00 81.00 15.50 15.00 321.00 643.52 b 976.50 1341.55 b 7428.07
1971 1311.50 1005.00 1058.00 603.50 189.00 233.00 0.00 z 0.00 z 320.17 a 651.50 929.00 1457.00 7757.67
1972 1453.50 0.00 z 844.00 701.00 257.50 130.71 b 0.00 z 35.00 383.00 601.40 a 906.00 1341.50 6653.61
1973 1357.28 a 1006.00 0.00 z 495.50 279.00 0.00 z 0.00 y 69.50 224.00 594.00 1031.00 1088.00 6144.28
1974 1343.00 939.50 924.00 596.00 490.50 142.50 87.00 37.50 135.00 513.05 a 860.00 1111.00 7179.05
1975 1355.00 1235.00 1061.00 693.00 381.19 d 187.50 b 28.00 128.65 a 185.00 621.00 953.00 1221.83 b 8050.16
1976 1196.00 1005.50 1038.00 637.50 391.00 258.50 60.50 105.50 116.00 599.00 856.50 0.00 z 6264.00
1977 1487.50 906.00 874.00 451.00 429.50 81.96 b 69.50 66.50 314.50 591.00 997.00 1313.37 a 7581.83
1978 1213.65 a 929.38 b 725.00 566.00 408.00 132.00 34.00 112.50 293.50 532.00 1057.00 1428.00 7431.03
1979 1645.00 1063.50 768.80 a 575.50 297.00 129.00 50.00 11.00 116.50 462.00 1051.00 1111.00 7280.30
1980 1557.00 1021.00 871.00 446.50 298.78 b 195.00 55.50 99.50 214.50 535.50 888.50 1190.00 7372.78
1981 1049.35 a 957.00 749.50 578.50 382.50 274.14 a 81.00 8.50 237.50 631.00 838.50 1192.50 6979.99
1982 1332.00 1028.00 848.00 686.00 337.50 82.00 76.00 38.00 191.50 573.50 1045.50 1249.50 7487.50
1983 1070.50 887.50 749.00 537.00 269.50 165.00 112.00 16.00 292.00 526.50 862.00 1568.50 7055.50
1984 1244.00 1031.00 788.00 621.50 451.00 198.00 0.00 z 38.00 296.00 678.90 a 938.50 1582.50 7867.40
1985 1390.50 1201.00 913.00 550.00 268.00 115.00 0.00 55.00 339.00 618.97 a 1410.50 1423.50 8284.47
1986 1145.00 1042.50 745.50 610.00 354.00 75.50 104.50 5.00 351.00 471.00 916.55 a 1230.00 7050.55
1987 1271.00 876.00 763.50 425.00 261.00 97.50 64.50 42.50 107.50 451.50 0.00 z 0.00 z 4360.00
1988 0.00 z 941.50 784.50 485.50 332.00 176.00 45.50 42.50 217.50 401.00 911.00 1207.00 5544.00
1989 1203.00 1193.50 918.00 477.00 336.50 95.50 41.00 64.00 139.00 573.00 838.50 1087.00 6966.00
1990 1059.50 1095.50 737.50 434.00 410.50 187.00 36.50 50.50 55.00 657.50 868.00 1497.00 7088.50
1991 1413.00 793.50 867.00 539.50 369.00 223.50 16.50 31.50 76.50 577.50 963.00 1077.00 6947.50
1992 1128.00 810.00 606.00 485.00 212.50 54.50 54.00 75.50 242.50 532.00 0.00 z 1645.50 5845.50
1993 1524.17 a 1134.50 902.00 649.00 188.00 187.50 159.50 69.00 189.00 457.00 991.03 a 286.00 w 6450.70
1994 1090.50 747.00 i 742.50 460.00 289.00 178.50 17.00 27.00 70.50 526.00 1114.00 1217.27 a 5732.27
1995 689.50 l 913.50 861.00 577.50 235.50 145.50 23.00 129.50 106.00 608.00 585.50 k 769.50 l 3599.50
1996 1433.50 1191.32 d 933.00 598.50 473.50 167.50 44.50 49.00 261.00 628.00 606.50 l 0.00 z 5779.82
1997 0.00 z 1073.00 932.00 635.50 317.00 202.50 48.00 30.00 171.50 630.00 0.00 z 0.00 z 4039.50
1998 1251.00 864.00 779.00 548.00 262.50 131.00 1.50 20.50 77.50 547.00 0.00 z 0.00 z 4482.00
1999 0.00 z 1021.50 914.00 602.00 444.00 197.00 87.50 36.50 179.00 591.00 0.00 z 0.00 z 4072.50
2000 0.00 z 0.00 z 825.00 472.50 377.00 150.00 50.50 47.00 213.00 541.93 d 0.00 z 0.00 z 2676.93
2001 0.00 z 0.00 z 841.00 612.00 318.50 211.50 50.00 21.00 103.00 578.87 e 0.00 z 0.00 z 2735.87
2002 0.00 z 0.00 z 1034.00 565.00 385.00 99.50 29.50 32.00 172.50 297.00 l 0.00 z 0.00 z 2317.50
2003 0.00 z 0.00 z 0.00 z 0.00 z 369.00 95.50 12.50 5.00 151.50 426.50 0.00 z 0.00 z 1060.00
2004 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2005 0.00 z 0.00 z 0.00 z 515.56 c 267.50 201.50 22.50 25.50 211.00 548.00 0.00 z 0.00 z 1791.56
2006 0.00 z 0.00 z 0.00 z 550.00 331.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 881.00
Period of Record Statistics
MEAN 1333.09 1014.99 882.75 572.55 331.85 157.12 53.07 57.22 208.11 575.73 954.13 1263.13 7536.03
S.D. 208.79 139.51 112.91 75.39 76.46 58.00 34.96 39.41 86.44 73.06 123.51 162.00 494.38
SKEW 0.92 0.30 0.25 0.13 0.07 0.18 0.82 0.84 0.23 -0.61 1.33 0.64 0.61
MAX 1973.50 1395.00 1170.50 745.00 490.50 287.00 159.50 182.00 404.00 679.00 1410.50 1645.50 8709.50
MIN 1046.50 753.00 606.00 425.00 188.00 54.50 0.00 1.50 55.00 401.00 753.50 1011.00 6873.00
NO YRS 46 48 52 55 55 50 47 54 54 53 43 42 27