STEHEKIN 4 NW, WASHINGTON

Monthly Total Heating Degree Days

(458059)

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
1906 238.50 w 827.00 458.50 n 405.52 a 319.82 a 213.50 3.50 24.50 216.50 510.98 a 838.00 1015.50 4374.82
1907 1412.50 157.50 w 873.50 598.97 a 224.00 143.00 23.25 a 70.94 e 205.34 a 453.00 778.27 d 1014.06 e 5796.83
1908 0.00 z 0.00 z 0.00 z 551.00 252.50 g 87.32 b 7.00 m 51.31 b 203.50 0.00 z 792.69 d 0.00 z 1685.82
1909 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1912 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1913 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1916 0.00 z 0.00 z 0.00 z 0.00 z 413.00 186.50 95.50 30.50 181.50 524.00 609.00 k 0.00 z 1431.00
1917 0.00 z 561.50 m 999.50 684.00 327.05 a 214.50 26.50 13.00 192.00 454.00 761.00 978.00 4649.55
1918 988.50 992.50 855.00 477.00 358.00 83.00 50.50 71.50 107.00 520.00 0.00 z 0.00 z 4503.00
1919 1100.50 1022.00 a 851.00 547.00 378.20 a 237.00 15.50 a 47.05 c 248.00 572.47 a 897.50 1268.00 7184.22
1920 1144.50 945.50 781.50 575.50 413.00 224.50 19.50 66.13 a 285.50 643.50 817.00 1011.50 6927.63
1921 1166.50 941.50 835.00 610.50 316.00 155.00 45.00 54.50 369.00 548.50 865.50 1162.00 7069.00
1922 1372.00 1170.00 974.50 597.00 375.50 53.50 6.00 47.50 182.00 511.50 919.00 1263.00 7471.50
1923 1168.50 1096.50 845.50 517.50 306.50 167.00 28.00 30.50 178.50 530.00 770.50 1111.00 6750.00
1924 1249.00 864.50 775.50 502.50 167.00 128.50 22.00 38.50 251.50 543.50 942.50 1186.00 6671.00
1925 1095.00 822.00 734.00 458.00 256.50 131.50 0.00 88.00 200.00 574.00 867.00 903.00 6129.00
1926 1055.50 774.00 615.00 403.00 344.00 68.00 5.00 35.50 343.00 533.00 776.50 1143.50 6096.00
1927 1168.00 942.50 853.00 590.00 380.50 70.50 20.00 69.00 i 238.00 541.00 829.00 1250.50 6883.00
1928 1093.50 914.50 783.00 582.50 209.00 126.00 14.00 27.00 203.00 566.00 826.00 1169.50 6514.00
1929 1381.50 1077.50 719.00 580.00 306.00 149.50 44.00 28.00 268.00 520.28 a 914.00 1032.00 7019.78
1930 1554.50 904.00 779.00 442.50 333.00 191.00 30.50 21.00 212.00 635.00 930.00 1061.00 7093.50
1931 1047.00 944.50 818.00 488.50 281.50 150.00 16.50 36.50 242.50 550.00 950.00 1136.50 6661.50
1932 1249.50 1025.88 a 859.50 493.00 374.00 86.50 94.50 59.00 240.50 528.00 805.50 1119.00 6934.88
1933 1088.50 1060.50 898.50 552.50 460.50 206.50 59.00 54.50 364.50 579.00 773.50 1010.00 7107.50
1934 1029.50 904.00 752.00 353.00 335.00 113.00 52.50 31.00 291.50 559.50 740.50 1023.00 6184.50
1935 1219.00 942.00 916.50 655.00 344.50 168.50 95.50 105.00 243.50 625.00 972.00 1042.00 7328.50
1936 1133.50 1376.50 910.00 478.50 247.00 159.00 43.00 26.50 297.00 505.50 922.50 1047.00 7146.00
1937 1546.00 1123.50 864.00 611.50 354.50 203.50 40.50 146.00 230.00 544.50 838.50 1080.00 7582.50
1938 1155.50 959.50 904.00 581.50 307.00 133.50 22.50 86.50 163.50 582.00 891.50 1025.00 6812.00
1939 960.00 932.00 784.00 462.00 309.50 187.00 40.00 47.50 209.00 500.50 806.79 b 938.00 6176.29
1940 1041.00 906.00 704.00 472.00 280.50 76.00 24.50 40.50 166.00 499.00 937.24 a 1100.00 6246.74
1941 1062.78 a 903.00 713.00 425.50 335.00 157.00 7.00 94.03 a 329.50 574.00 837.50 1047.50 6485.82
1942 1222.00 899.00 833.50 487.76 a 374.07 a 204.50 26.00 61.00 203.00 523.50 935.00 1065.50 6834.83
1943 1368.00 933.00 979.00 549.50 412.50 222.00 37.00 71.30 a 215.50 551.80 a 827.07 a 1071.00 7237.67
1944 1193.00 971.50 896.00 524.50 312.00 103.50 25.00 58.00 182.59 a 479.50 800.50 1143.00 6689.09
1945 945.50 827.50 812.00 590.50 306.50 154.50 36.50 39.50 258.50 534.50 864.00 1113.50 6483.00
1946 1054.00 910.00 808.00 550.50 249.00 228.00 52.00 63.50 258.50 625.50 969.00 1106.70 a 6874.70
1947 1245.00 953.62 b 784.00 476.00 226.00 150.00 49.50 59.42 a 214.50 552.00 762.00 1009.50 6481.53
1948 1149.00 1005.00 892.50 638.50 368.00 77.68 b 72.00 107.50 318.00 701.00 859.00 1254.47 a 7442.65
1949 1514.50 1080.50 888.00 534.00 217.00 162.50 61.00 71.50 236.00 641.50 751.50 1083.50 7241.50
1950 1615.00 988.50 850.50 678.50 368.50 150.00 40.50 28.00 223.50 647.50 904.00 993.50 7488.00
1951 1135.50 1020.50 1021.00 572.50 283.00 122.50 55.00 51.50 235.00 593.00 915.00 1187.76 d 7192.26
1952 0.00 z 0.00 z 0.00 z 528.00 309.00 178.00 51.00 74.00 172.50 465.00 d 908.50 0.00 z 2686.00
1953 0.00 z 0.00 z 781.00 575.50 367.00 254.00 51.50 76.50 222.50 531.50 795.00 0.00 z 3654.50
1954 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 66.50 107.00 261.00 672.50 0.00 z 0.00 z 1107.00
1955 1065.50 961.00 997.50 708.50 445.50 153.00 123.00 66.00 248.50 634.50 1086.50 1136.00 7625.50
1956 1043.50 1045.50 877.50 451.00 252.00 184.50 42.50 49.50 236.00 625.00 869.50 980.50 6657.00
1957 1282.00 899.00 766.00 497.50 196.50 110.50 65.50 139.00 160.00 620.50 823.50 937.50 6497.50
1958 971.00 714.00 765.50 534.00 163.00 49.50 7.50 5.50 239.50 546.00 905.50 970.00 5871.00
1959 1086.50 880.00 777.00 255.50 p 137.50 p 157.00 48.50 82.00 310.50 578.50 911.50 979.00 5810.50
1960 1074.50 882.00 817.00 549.00 381.00 122.00 5.50 103.00 247.50 523.00 860.50 1060.00 6625.00
1961 1026.00 769.00 741.50 504.50 316.00 76.50 36.00 8.50 276.00 640.00 1003.50 1049.50 6447.00
1962 1073.50 805.50 815.00 460.50 391.00 149.50 80.50 72.50 237.50 573.50 815.00 1031.50 6505.50
1963 1203.00 850.50 760.00 584.00 334.50 120.00 67.00 68.00 165.50 531.50 828.00 1032.50 6544.50
1964 996.00 861.00 816.50 574.50 359.50 185.00 56.00 135.00 303.50 622.50 901.50 1230.00 7041.00
1965 1097.50 854.00 895.00 538.00 374.00 132.00 46.50 78.00 287.50 534.00 727.00 1113.00 6676.50
1966 1121.00 822.00 845.50 515.00 273.00 198.00 51.50 56.00 121.00 582.00 791.50 977.50 6354.00
1967 977.50 799.50 835.50 643.00 322.00 93.50 13.50 7.50 129.50 591.50 850.00 1067.00 6330.00
1968 1067.00 954.50 754.00 561.00 319.00 146.00 34.50 126.00 208.00 656.00 843.50 1227.00 6896.50
1969 1403.00 773.00 h 872.00 613.50 265.00 71.00 58.00 78.00 245.00 633.50 811.00 1045.50 6095.50
1970 1153.00 853.00 833.00 638.50 313.50 74.50 30.00 34.50 319.50 621.50 912.50 1138.50 6922.00
1971 1068.00 886.50 955.50 621.50 222.50 160.50 64.50 7.50 274.50 571.00 820.00 1149.00 6801.00
1972 1170.50 979.00 823.50 675.00 241.00 92.50 46.50 38.00 314.00 568.50 781.00 1167.50 6897.00
1973 1199.00 884.00 721.50 439.50 258.00 147.00 14.00 39.50 157.50 539.50 936.50 996.00 6332.00
1974 1164.00 811.00 512.50 k 516.00 391.00 93.00 56.32 a 12.50 115.50 489.00 790.00 973.00 5411.32
1975 1107.50 962.00 883.00 576.50 305.50 108.50 6.50 47.00 r 135.00 569.00 907.24 a 1060.00 6620.74
1976 1072.00 929.00 898.00 12.50 z 342.50 187.50 47.00 91.50 96.00 522.00 852.00 1002.00 6039.50
1977 1203.50 833.00 781.50 420.00 373.00 72.00 40.50 53.50 264.50 602.00 983.00 1114.50 6741.00
1978 1109.00 890.00 811.00 542.00 322.00 60.00 13.00 57.00 266.00 554.26 b 1001.50 1245.00 6870.76
1979 1444.50 1043.50 821.50 543.50 229.00 84.00 39.00 14.50 113.50 435.50 927.00 999.00 6694.50
1980 1345.50 996.50 824.08 a 467.50 278.00 149.00 33.00 48.50 190.00 537.00 860.50 1056.50 6786.08
1981 973.50 878.50 672.50 549.50 315.00 212.50 52.50 2.00 210.50 631.50 832.00 1106.00 6436.00
1982 1146.00 978.00 855.00 667.50 327.50 77.00 58.50 29.00 193.00 593.00 1008.50 0.00 z 5933.00
1983 1031.00 876.50 750.00 515.50 219.00 104.50 96.00 26.00 280.50 574.00 803.50 1362.50 6639.00
1984 1064.50 897.50 724.00 564.00 0.00 z 151.50 18.50 26.50 278.00 616.00 969.50 1271.50 6581.50
1985 1202.00 1029.50 846.50 500.50 260.00 92.50 0.00 9.50 292.00 599.00 1133.50 1232.00 7197.00
1986 1053.00 960.50 770.00 533.50 326.50 69.50 55.50 2.00 277.00 487.50 819.50 1109.00 6463.50
1987 1159.50 834.50 784.00 419.00 244.00 88.50 21.00 16.50 111.00 466.50 712.00 1150.00 6006.50
1988 1142.00 897.00 765.00 464.50 290.50 155.50 41.50 19.50 218.50 415.50 842.50 1091.00 6343.00
1989 1062.00 1105.00 901.50 456.00 297.08 a 58.00 31.50 25.00 134.00 528.50 734.50 983.50 6316.58
1990 1020.50 990.00 772.00 395.00 345.50 143.50 11.50 46.00 61.50 640.00 776.00 1303.00 6504.50
1991 1172.50 802.00 845.00 524.00 305.00 150.00 10.00 28.50 89.00 514.50 884.00 983.00 6307.50
1992 1041.50 825.00 627.50 448.00 189.50 44.50 29.00 46.50 251.50 501.00 817.50 1156.50 5978.00
1993 1308.00 978.50 865.50 581.50 165.50 138.00 53.00 46.50 168.50 423.50 934.50 1102.50 6765.50
1994 958.00 963.50 727.50 383.00 230.00 148.00 15.50 7.50 75.50 517.00 975.00 1117.50 6118.00
1995 1181.00 867.50 852.00 536.00 195.00 106.50 11.50 108.50 104.00 583.00 878.00 1089.00 6512.00
1996 1148.00 1057.00 834.00 563.50 402.00 117.50 38.50 29.00 235.00 588.00 900.50 1190.50 7103.50
1997 1129.50 908.50 0.00 z 626.50 290.00 0.00 z 0.00 z 26.50 0.00 z 563.00 822.50 1028.50 5395.00
1998 1096.50 817.50 736.00 508.50 217.00 74.50 3.50 12.50 59.00 521.50 787.50 1138.00 5972.00
1999 994.00 877.00 852.50 544.50 377.50 149.00 53.50 19.00 194.00 569.50 778.50 970.00 6379.00
2000 1090.50 931.50 804.50 450.50 296.50 118.50 33.50 38.00 203.50 560.00 950.50 1133.50 6611.00
2001 1065.37 a 937.50 762.50 554.00 284.00 162.50 9.50 14.00 74.50 568.50 806.00 1028.50 6266.87
2002 1036.00 886.00 888.00 507.50 321.00 66.00 24.00 19.50 145.50 497.00 807.50 954.50 6152.50
2003 1023.00 871.00 0.00 z 534.50 277.50 41.00 0.00 2.50 109.50 445.50 964.50 1064.50 5333.50
2004 1112.00 0.00 z 0.00 z 404.00 0.00 z 98.00 f 6.50 24.50 202.00 488.00 850.50 1012.00 4099.50
2005 1091.50 925.50 699.00 490.50 235.50 145.50 18.00 11.50 160.50 483.50 890.00 1140.50 6291.50
2006 996.50 942.00 862.50 541.00 332.00 92.50 5.50 24.00 171.50 468.50 936.72 a 1145.50 6518.22
2007 1207.45 a 914.00 799.50 556.50 257.30 a 111.00 0.00 z 26.50 150.50 609.50 871.50 1121.00 6624.75
2008 1266.00 908.50 847.00 685.50 190.50 h 153.00 11.50 63.00 200.00 0.00 z 827.50 1218.00 6180.00
2009 1123.50 929.00 968.50 557.00 328.00 48.00 7.50 0.00 z 0.00 z 625.50 854.50 1220.00 6661.50
2010 1026.00 843.50 751.00 564.00 381.50 142.00 25.00 32.50 241.67 c 471.50 f 443.50 r 1098.50 5105.67
2011 1076.00 956.00 776.50 g 810.50 525.50 181.00 58.50 24.50 76.73 d 564.00 959.44 c 1135.50 6367.67
2012 1136.87 e 929.61 b 891.00 526.50 277.00 205.34 a 20.31 b 8.27 a 124.29 b 563.68 a 876.60 e 1045.96 d 6605.43
2013 1175.33 b 834.52 e 742.85 d 15.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 41.50 z 2752.70
Period of Record Statistics
MEAN 1146.35 929.10 822.28 536.85 308.82 134.03 36.24 47.71 210.38 555.20 865.57 1092.52 6682.13
S.D. 138.55 97.03 78.87 79.24 68.28 50.56 24.90 32.89 70.09 58.66 78.30 93.21 413.39
SKEW 1.33 1.23 0.09 0.35 0.13 0.13 0.81 0.92 -0.15 -0.06 0.60 0.46 0.28
MAX 1615.00 1376.50 1021.00 810.50 525.50 254.00 123.00 146.00 369.00 701.00 1133.50 1362.50 7625.50
MIN 945.50 714.00 615.00 353.00 163.00 41.00 0.00 2.00 59.00 415.50 712.00 903.00 5871.00
NO YRS 94 92 91 96 94 97 97 97 98 97 96 93 75