CHEWELAH, WASHINGTON

Monthly Total Heating Degree Days

(451395)

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
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 900.50 931.00 1831.50
1926 1167.00 810.00 722.50 455.50 407.50 171.00 42.37 a 101.00 441.00 571.50 849.00 1181.00 6919.37
1927 1299.00 971.00 856.50 616.50 444.00 120.00 82.84 b 71.00 321.50 586.00 868.00 1550.00 7786.34
1928 1221.50 1032.50 759.00 622.50 265.50 198.50 59.50 131.75 a 306.00 616.50 948.00 1228.50 7389.75
1929 1629.00 1391.50 796.00 423.00 m 317.00 134.50 42.00 68.00 334.50 530.10 a 1106.38 a 1062.50 7411.48
1930 1645.00 899.00 810.50 438.50 267.50 i 196.50 49.50 i 53.00 212.50 662.50 980.50 1216.50 7114.50
1931 1047.50 945.50 738.00 560.17 a 238.50 138.00 36.50 54.00 277.00 603.50 995.00 1230.00 6863.67
1932 1319.00 1151.20 a 892.50 529.50 348.50 115.50 87.50 108.50 189.00 g 606.00 801.96 b 1309.00 7269.16
1933 1194.50 1348.15 a 867.50 598.50 449.50 186.50 64.00 62.50 359.50 570.50 832.50 921.50 7455.15
1934 1002.50 806.50 673.50 366.00 301.00 134.50 56.00 42.50 361.00 558.00 699.50 1088.21 b 6089.21
1935 1257.50 986.00 859.00 646.80 e 400.50 221.00 83.50 109.00 228.50 648.50 1012.50 1066.40 a 7519.20
1936 1128.00 1499.50 858.50 499.50 244.00 121.50 39.00 72.50 284.00 521.50 1050.50 1062.00 7380.50
1937 1860.00 a 1153.50 783.00 573.50 330.00 193.97 a 25.50 122.00 236.50 499.10 a 801.50 840.00 f 6578.57
1938 1122.50 930.00 817.50 309.00 o 0.00 z 105.50 27.50 100.50 94.00 499.00 535.00 l 540.50 q 3696.50
1939 1076.50 1156.62 b 825.50 495.00 317.75 a 270.00 72.50 36.50 206.50 582.50 886.50 991.50 6917.37
1940 1188.00 937.00 667.00 474.50 232.50 75.50 7.00 h 43.00 106.50 448.00 1026.50 1090.00 6288.50
1941 1127.00 823.00 646.00 428.00 317.00 120.50 1.50 69.50 323.50 604.00 815.50 1047.28 a 6322.78
1942 1347.00 939.50 815.00 513.50 371.00 200.00 24.00 60.50 211.00 573.50 981.00 1136.00 7172.00
1943 1452.00 999.50 950.00 463.50 401.00 201.00 55.50 71.00 206.00 546.50 854.00 1170.00 7370.00
1944 1306.50 1062.00 881.00 499.50 274.50 106.00 46.50 54.50 191.00 452.00 870.50 1208.00 6952.00
1945 1084.00 884.00 827.50 620.50 275.68 c 166.50 25.00 36.50 306.00 520.00 944.00 1156.50 6846.18
1946 1232.00 1033.00 771.50 510.00 245.50 184.50 35.00 45.47 a 281.25 b 711.50 974.00 1097.50 7121.22
1947 1348.50 a 620.50 i 712.50 539.00 248.52 a 159.50 46.00 83.00 222.32 b 492.50 605.50 j 1079.50 4931.34
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 30.00 c 76.50 57.00 252.93 a 618.45 a 917.68 b 1481.50 3434.06
1949 2025.50 1288.54 b 837.00 482.50 234.57 a 159.50 77.50 93.50 215.00 682.50 727.50 1200.45 b 8024.05
1950 1836.50 1090.50 898.48 a 621.50 385.50 155.00 50.12 a 34.00 234.00 614.32 a 926.00 1034.50 7880.42
1951 1258.00 997.00 998.00 528.00 324.98 a 169.00 36.00 63.50 236.50 567.00 891.50 1418.00 7487.48
1952 1357.00 1061.50 858.50 475.00 269.50 161.50 57.50 73.50 176.00 491.50 1014.50 1098.00 7094.00
1953 873.00 816.50 758.50 555.00 362.00 209.50 51.00 80.50 228.50 504.00 786.50 1005.50 6230.50
1954 1242.00 877.50 862.50 612.00 329.00 224.00 87.50 118.50 260.50 670.12 a 702.00 1115.00 7100.62
1955 1187.00 1094.00 1039.00 691.03 a 430.00 136.50 95.50 97.00 262.50 562.13 a 1096.50 1304.50 7995.67
1956 1207.50 1282.00 945.50 460.50 248.00 200.00 49.50 75.00 247.50 588.47 b 988.50 1107.00 7399.47
1957 1685.50 1108.50 825.50 523.00 159.00 130.50 88.00 122.00 186.50 584.35 a 917.00 1004.50 7334.35
1958 1029.50 702.50 755.50 551.50 166.50 69.50 24.00 18.50 279.00 577.50 998.00 1103.00 6275.00
1959 1201.00 1055.50 817.00 519.00 451.00 167.00 83.00 113.00 317.50 612.00 1045.00 1126.50 7507.50
1960 1435.00 1009.00 844.50 548.50 403.50 142.50 17.50 135.50 241.50 539.50 897.50 1150.50 7365.00
1961 1107.50 797.50 778.50 567.00 333.00 72.00 26.50 11.00 356.00 642.50 1080.00 1282.00 7053.50
1962 1482.50 977.00 952.50 490.50 426.00 199.50 105.00 105.50 248.50 548.00 793.50 978.00 7306.50
1963 1371.00 846.50 758.00 584.50 357.50 147.50 82.00 74.50 126.50 520.50 865.50 1242.50 6976.50
1964 1189.50 1210.00 1019.50 610.00 391.00 165.50 75.00 169.50 369.50 630.00 902.50 1295.50 8027.50
1965 1145.00 1076.00 1024.00 514.50 399.50 188.00 67.00 85.50 395.00 530.50 826.00 1109.50 7360.50
1966 1244.00 991.50 819.50 581.00 334.00 250.00 73.50 90.50 139.50 617.50 881.00 962.00 6984.00
1967 1019.00 820.50 848.00 656.00 371.48 a 115.00 43.00 25.50 124.50 592.50 883.00 1249.00 6747.48
1968 1261.00 881.00 715.00 658.50 405.00 208.00 58.50 101.00 0.00 z 665.50 896.50 1271.00 7121.00
1969 1535.00 1101.50 925.50 536.00 270.00 113.50 106.00 98.50 242.50 693.00 860.50 1107.00 7589.00
1970 1270.00 942.50 885.00 670.00 345.00 123.00 43.50 47.00 376.50 656.50 961.20 e 1249.00 7569.20
1971 1199.00 961.50 972.50 600.00 300.00 245.00 102.00 31.50 380.50 658.00 899.50 1288.50 7638.00
1972 1326.50 1033.50 753.50 679.00 324.50 181.50 91.50 38.00 365.50 644.00 851.00 1235.50 7524.00
1973 1257.00 903.00 781.50 576.50 335.00 191.00 63.00 74.50 262.50 608.00 955.00 1004.00 7011.00
1974 1308.00 853.00 819.50 538.00 450.00 112.50 56.50 56.00 220.50 616.00 840.50 1051.50 6922.00
1975 1348.00 1163.50 980.50 677.00 370.50 198.50 23.00 115.00 0.00 z 602.00 970.00 1111.00 7559.00
1976 1154.50 998.00 954.00 584.50 347.50 263.50 62.50 112.50 185.50 631.50 917.00 1165.50 7376.50
1977 1378.00 887.00 828.00 504.00 434.50 97.00 78.50 55.50 339.00 677.50 0.00 z 1230.70 a 6509.70
1978 1254.98 a 907.50 799.28 a 553.50 417.47 a 139.00 50.63 a 119.00 294.00 627.00 1037.00 1478.00 7677.37
1979 1724.50 1051.00 807.00 619.50 339.00 144.50 43.00 9.00 139.00 493.00 1013.00 965.50 7348.00
1980 1400.50 939.50 823.50 424.50 247.50 166.50 52.00 108.50 224.00 525.00 829.00 1002.85 a 6743.35
1981 970.50 832.50 676.50 563.50 335.50 239.00 78.00 16.00 206.00 599.50 815.50 1135.50 6468.00
1982 1280.50 995.50 756.00 667.50 325.50 73.50 73.00 32.50 222.00 579.50 974.00 1170.00 7149.50
1983 1003.50 796.00 674.00 534.50 291.50 146.50 107.00 9.50 327.50 592.50 779.50 1476.00 6738.00
1984 1142.00 908.00 715.50 581.00 440.50 209.00 36.50 62.00 353.00 683.00 884.00 1415.50 7430.00
1985 1326.50 1169.50 899.00 506.50 280.00 138.00 0.50 84.00 374.00 652.00 1305.54 b 1380.50 8116.04
1986 1129.00 984.50 668.00 568.50 319.50 51.00 67.00 0.00 335.00 497.50 901.61 b 1141.50 6663.11
1987 1167.00 832.50 687.00 411.50 241.50 0.00 z 32.00 61.00 135.50 542.50 819.00 1193.00 6122.50
1988 1296.00 904.50 747.50 455.50 305.50 161.00 44.00 18.50 267.50 426.50 856.50 1156.50 6639.50
1989 1113.50 1118.50 848.50 477.00 319.82 a 45.50 25.00 58.00 177.50 613.00 821.50 1041.00 6658.82
1990 975.50 982.50 707.50 424.00 347.50 159.50 8.50 34.50 63.00 646.00 800.00 1372.50 6521.00
1991 1293.00 735.00 857.50 525.50 342.50 175.00 38.00 17.50 122.00 605.50 914.00 1025.00 6650.50
1992 1024.00 756.50 588.00 458.00 193.00 36.00 22.00 48.00 251.00 502.50 893.00 1329.00 6101.00
1993 1427.00 1112.50 848.00 555.00 168.00 128.50 139.50 65.00 221.00 471.50 1068.00 1091.50 7295.50
1994 968.00 972.00 697.00 423.50 244.50 113.00 12.50 14.50 108.00 564.00 975.00 1107.50 6199.50
1995 1119.00 795.00 798.50 545.89 b 229.00 125.00 31.00 90.50 133.50 635.00 812.50 1088.50 6403.39
1996 1219.00 1050.00 821.50 530.00 409.00 128.50 35.50 51.00 276.00 583.50 952.00 1292.50 7348.50
1997 1200.73 a 971.50 789.50 597.50 243.35 a 135.00 a 30.00 31.00 133.00 555.50 823.00 1091.50 6601.58
1998 1071.00 762.50 697.00 462.00 209.50 89.50 0.50 13.43 a 85.50 574.00 742.00 1110.00 5816.93
1999 991.48 a 846.50 754.00 533.79 a 390.50 138.00 78.00 17.00 272.14 b 601.00 749.50 1006.97 b 6378.88
2000 648.00 o 0.00 z 750.89 d 418.93 b 287.00 110.89 b 33.67 b 79.50 238.00 578.00 847.50 f 1207.00 3703.88
2001 1194.50 1014.00 801.00 583.00 241.50 157.50 40.50 14.50 126.00 600.00 731.50 611.50 n 5504.00
2002 601.00 o 926.50 879.00 478.50 347.00 91.00 35.50 28.50 210.50 656.50 491.50 n 488.00 p 3653.00
2003 967.00 844.00 720.00 487.50 307.00 71.50 16.00 1.50 156.00 430.50 1008.00 1115.50 6124.50
2004 1127.00 0.00 z 697.50 407.00 297.00 0.00 z 22.50 46.00 251.00 516.84 b 910.96 d 1119.00 5394.81
2005 0.00 z 913.00 0.00 z 538.00 298.50 70.50 n 9.50 g 55.50 213.50 539.00 958.39 b 1314.50 4830.39
2006 918.50 939.00 799.50 540.00 299.00 112.00 11.00 25.50 227.00 616.50 969.00 1264.00 6721.00
2007 1353.00 886.00 748.50 549.50 323.50 168.50 3.00 59.00 251.50 606.50 969.00 1191.71 e 7109.71
2008 1359.00 1036.00 909.50 718.00 327.00 230.89 b 22.00 g 92.00 264.50 675.00 675.00 h 1261.59 c 6873.48
2009 1360.38 a 1082.00 999.50 595.50 356.50 136.50 38.75 a 60.50 201.50 738.50 875.00 1333.00 7777.63
2010 993.50 782.50 755.50 568.50 455.50 216.00 79.50 80.00 228.00 527.00 960.00 1187.00 6833.00
2011 1252.50 1097.00 803.50 674.50 372.00 204.50 109.00 38.50 201.72 a 598.00 1000.50 1194.00 7545.72
2012 1210.50 967.50 834.50 482.50 339.50 206.50 27.00 36.68 a 197.78 c 592.00 809.50 1024.50 6728.46
2013 1369.00 748.00 g 555.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1369.00
Period of Record Statistics
MEAN 1252.26 981.89 813.46 541.72 324.75 152.30 52.09 63.76 241.28 583.82 907.87 1167.70 7067.72
S.D. 212.80 150.79 94.97 75.65 71.76 52.56 29.36 35.99 80.94 65.01 103.59 135.05 532.50
SKEW 1.17 0.84 0.30 0.11 -0.14 -0.08 0.42 0.35 0.08 -0.24 0.57 0.61 -0.18
MAX 2025.50 1499.50 1039.00 718.00 455.50 270.00 139.50 169.50 441.00 738.50 1305.54 1550.00 8116.04
MIN 873.00 702.50 588.00 366.00 159.00 30.00 0.50 0.00 63.00 426.50 699.50 921.50 5816.93
NO YRS 84 83 85 84 84 84 83 87 84 87 82 84 69