NESPELEM 2 S, WASHINGTON

Monthly Total Heating Degree Days

(455832)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199105
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
1915 0.00 z 468.00 m 670.00 407.88 d 303.69 d 166.00 0.00 q 8.50 264.50 470.50 1062.50 0.00 z 3353.57
1916 0.00 z 1100.00 835.50 537.00 418.00 155.50 98.50 68.72 a 209.00 631.00 593.00 k 1445.12 a 5498.33
1917 1426.00 a 1125.00 1077.50 641.50 365.00 224.00 45.00 14.50 232.00 500.00 819.50 1132.53 a 7602.53
1918 1158.33 e 1096.00 791.50 531.50 428.50 134.00 25.00 102.00 74.50 493.00 0.00 z 0.00 z 4834.33
1919 820.00 g 1041.00 878.00 549.00 318.00 233.00 32.50 62.00 0.00 z 846.00 990.00 1429.00 6378.50
1920 1383.00 998.50 812.00 620.50 428.50 202.50 11.50 72.16 b 226.00 592.10 a 831.00 1051.00 7228.76
1921 1201.50 994.50 771.50 652.76 a 329.00 97.00 43.50 63.50 380.50 528.50 989.50 1287.50 7339.26
1922 1588.50 1342.50 1004.50 622.50 394.00 55.00 4.00 51.50 182.50 477.00 939.50 1460.00 8121.50
1923 1136.00 1217.50 843.50 527.00 342.50 151.50 19.50 31.00 177.50 511.50 895.50 1167.50 7020.50
1924 1442.50 790.00 788.00 606.50 178.00 126.00 14.00 46.00 221.00 541.50 930.50 1337.00 7021.00
1925 1271.00 806.50 736.50 430.00 212.50 125.50 1.50 91.00 222.00 588.00 903.00 966.00 6353.50
1926 1168.50 783.50 624.00 239.00 o 105.00 v 87.93 a 0.00 z 40.09 b 402.50 543.50 831.00 1184.89 d 5665.91
1927 1318.05 c 1005.85 b 861.50 599.50 413.50 78.50 34.00 53.00 261.00 536.00 864.00 1385.50 7410.40
1928 1294.00 983.00 735.50 610.50 218.50 132.93 a 19.50 32.00 200.17 a 594.00 877.00 1164.50 6861.60
1929 1611.00 1383.50 758.00 634.00 301.50 114.50 23.00 28.00 274.50 492.50 1033.00 1157.50 7811.00
1930 1757.00 897.50 734.00 404.50 288.50 154.50 19.00 14.50 167.50 599.50 898.50 1212.00 7147.00
1931 815.00 h 1063.00 751.50 492.50 240.50 124.50 21.00 26.00 242.59 a 515.50 1014.00 1207.00 5698.09
1932 1405.50 1189.50 854.00 500.50 305.00 77.50 84.50 48.50 229.00 502.50 742.00 1293.50 7232.00
1933 1190.00 1283.50 839.00 556.50 439.50 166.50 41.50 45.00 306.50 517.50 865.00 966.50 7217.00
1934 1008.00 824.00 673.50 288.50 277.50 88.50 38.50 5.50 326.50 479.00 730.50 1144.00 5884.00
1935 1236.50 897.00 861.00 607.00 334.50 130.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4066.50
1936 1209.50 1531.50 871.00 423.00 115.50 93.50 26.00 29.50 216.50 436.50 1037.00 1024.00 7013.50
1937 1854.50 1241.00 839.50 649.00 0.00 z 96.50 14.50 66.13 a 160.50 373.50 869.00 951.50 7115.63
1938 1027.50 929.00 832.50 417.50 290.00 93.00 15.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3604.50
1939 950.00 1071.00 820.00 484.00 203.00 174.50 36.50 24.50 155.50 504.00 876.50 881.00 6180.50
1940 1166.00 967.00 663.50 442.00 193.50 73.50 7.50 18.50 92.50 313.00 f 1013.50 1097.00 5734.50
1941 1078.50 853.00 602.00 421.00 325.50 108.50 2.00 56.50 323.50 522.00 752.00 942.00 5986.50
1942 1320.00 897.00 781.00 465.52 a 367.50 157.00 27.00 47.00 132.00 476.00 993.46 d 1159.00 6822.48
1943 1521.07 a 984.00 903.43 c 440.00 452.60 a 191.50 46.50 34.74 b 77.50 22.50 t 854.50 1149.50 6655.34
1944 1265.04 e 1012.10 d 849.73 c 443.65 d 238.00 0.00 z 21.50 20.67 a 113.33 c 365.50 118.50 x 1001.50 g 4329.52
1945 1100.00 851.50 813.50 426.00 j 265.00 125.00 f 5.54 c 9.62 b 228.00 475.00 957.60 e 1102.64 b 5808.39
1946 1172.00 975.50 761.71 c 373.50 i 207.59 c 111.50 k 4.81 b 2.07 a 106.50 m 424.00 j 1008.33 c 1122.89 d 5254.90
1947 1329.38 a 934.00 717.00 508.45 a 149.66 b 118.93 b 8.35 e 0.00 z 0.00 z 425.14 c 887.59 a 1120.50 6198.99
1948 1253.50 1076.90 c 703.00 g 640.38 d 371.50 j 57.50 100.23 a 76.00 224.42 d 553.19 b 894.60 e 1422.00 6298.73
1949 1812.50 1177.00 785.16 b 441.43 b 235.82 c 145.86 a 50.00 51.00 195.60 e 492.50 g 720.00 a 1186.55 b 6800.92
1950 1832.00 1060.00 882.47 a 622.50 b 415.92 a 148.45 a 24.28 a 24.50 165.00 a 584.19 b 881.67 c 1063.54 e 7704.51
1951 1257.80 d 1003.33 a 1037.39 c 547.50 b 288.00 139.50 20.67 a 55.05 b 170.00 566.86 c 907.50 b 1285.93 d 7279.52
1952 1145.50 f 1088.00 906.00 484.66 a 329.50 140.00 43.92 a 59.00 124.00 415.00 902.40 e 1073.08 e 5565.55
1953 898.00 800.00 714.15 d 551.50 362.18 a 224.50 5.00 r 31.00 f 165.00 467.21 c 600.00 f 600.00 l 4182.55
1954 1260.67 a 854.56 c 850.71 e 606.50 292.84 c 210.00 27.50 64.00 235.00 378.50 l 707.00 852.00 h 5108.78
1955 1199.00 1112.72 c 1040.50 467.00 i 418.50 104.46 b 62.00 a 26.00 205.00 555.00 1101.00 1294.00 7118.18
1956 1185.00 1260.50 932.50 448.00 232.00 172.00 39.00 30.50 185.50 572.31 e 1069.04 d 1137.91 b 7264.26
1957 1673.00 719.00 j 809.50 481.50 166.00 130.00 60.50 102.50 107.00 551.00 896.50 1009.05 a 5986.55
1958 1020.50 700.00 764.00 551.00 179.50 87.78 c 6.00 16.61 c 223.50 f 529.58 a 952.00 1082.00 5888.97
1959 1167.50 1038.00 803.50 497.50 387.50 111.92 d 54.00 75.95 a 235.00 577.00 981.50 1110.50 7039.87
1960 1369.00 955.50 794.50 496.50 402.00 86.00 0.00 103.52 c 155.19 d 483.00 906.50 1244.50 6996.21
1961 1100.50 789.50 759.00 562.00 386.50 61.00 16.00 6.00 285.50 628.27 a 1080.50 1213.00 6887.77
1962 1365.50 899.00 867.00 451.61 b 397.50 143.00 66.50 50.00 137.50 529.50 754.50 968.50 6630.11
1963 1294.50 817.00 715.00 548.00 300.50 119.50 54.00 41.50 34.50 j 403.50 830.50 1191.00 6315.00
1964 1150.00 1044.50 887.50 600.00 336.50 95.77 d 37.50 85.00 282.78 c 504.78 a 651.00 h 1003.50 g 5024.33
1965 942.00 f 979.46 b 926.00 380.50 f 327.71 c 91.50 40.50 49.00 253.89 c 363.50 f 737.50 1076.73 a 4482.30
1966 807.50 k 642.00 i 784.00 389.00 h 150.50 l 147.32 b 53.98 b 36.50 53.50 298.00 n 579.50 h 999.75 c 2075.05
1967 754.50 g 771.00 793.27 c 471.00 g 330.09 d 58.45 a 15.50 0.50 51.00 316.00 k 588.50 h 1244.17 e 3263.98
1968 1150.00 862.50 693.33 e 366.50 k 203.00 j 116.54 d 27.12 c 72.33 d 145.86 a 574.57 b 819.50 870.50 g 4461.75
1969 1601.00 1104.50 891.54 d 383.00 h 104.00 p 32.50 g 29.45 a 53.73 a 145.86 a 295.00 n 291.50 s 655.50 l 3826.08
1970 787.50 k 600.50 i 480.00 m 406.00 j 154.00 n 87.60 e 19.52 d 16.00 262.00 g 296.50 r 584.00 n 1260.00 1383.12
1971 1183.50 890.00 852.00 0.00 z 0.00 z 102.22 c 49.60 a 2.00 0.00 z 222.00 u 882.69 d 1321.12 a 5283.13
1972 1352.00 1010.50 731.00 651.50 234.05 a 30.50 h 27.26 b 16.00 305.40 e 339.50 n 873.89 c 783.50 m 5201.60
1973 830.50 j 945.30 e 560.50 g 322.50 l 164.50 j 126.72 a 38.00 77.00 203.57 b 373.00 k 566.00 k 491.50 o 1390.60
1974 724.00 m 455.00 l 510.50 j 356.50 g 369.00 51.00 g 42.07 c 20.00 129.00 491.87 a 471.50 l 541.00 n 1051.94
1975 826.00 k 698.50 j 630.00 k 449.50 i 253.50 f 139.14 a 13.00 53.50 143.50 500.50 671.50 f 679.00 l 849.64
1976 1135.00 931.50 661.00 h 412.00 f 320.16 b 170.00 f 23.50 86.00 89.00 516.84 b 457.50 l 429.00 s 3102.00
1977 792.50 m 525.00 k 498.00 k 272.50 k 346.17 d 63.89 c 42.76 b 35.50 215.89 b 307.00 n 358.50 q 509.00 p 704.21
1978 626.00 n 509.50 l 491.00 i 308.00 j 339.97 a 93.00 4.81 b 71.50 210.52 a 0.00 z 997.50 1299.02 e 3016.31
1979 1582.66 c 1029.26 a 568.00 g 531.43 b 0.00 z 93.00 32.00 0.60 e 77.68 b 439.74 d 994.50 961.00 d 5741.86
1980 1386.06 e 994.50 820.50 408.00 279.00 172.00 55.36 c 67.50 217.50 b 280.50 k 315.00 q 595.00 n 4400.41
1981 520.50 n 480.50 m 408.00 m 410.50 i 244.00 h 244.82 b 74.00 22.98 b 245.00 498.50 f 842.07 a 1178.00 a 2606.87
1982 1356.50 1016.00 847.50 734.50 348.00 84.50 60.50 22.50 200.00 570.50 999.00 1156.50 7396.00
1983 646.50 k 815.50 694.50 385.50 j 292.43 a 115.00 89.00 2.50 257.00 526.50 704.50 1437.50 4934.43
1984 735.50 k 592.50 j 487.00 i 383.50 k 468.10 a 185.50 48.00 36.00 293.00 668.50 847.00 1455.50 4001.60
1985 942.50 j 822.00 i 594.50 l 541.50 260.00 110.00 0.00 44.50 304.00 568.00 711.50 m 592.50 r 1828.00
1986 556.50 p 659.50 j 405.50 m 363.50 k 244.50 k 52.00 79.00 0.00 283.00 459.50 474.50 l 760.00 k 873.50
1987 577.50 p 572.00 i 680.00 409.29 b 136.50 m 88.50 20.50 38.00 112.00 458.00 281.00 r 668.00 m 1806.29
1988 708.50 m 617.00 k 746.50 249.50 l 218.00 k 148.00 37.00 14.00 203.28 a 256.50 m 417.50 n 666.50 m 1148.78
1989 695.00 l 654.50 l 576.50 j 294.00 j 241.50 i 52.00 29.00 32.00 150.50 321.50 n 342.50 q 251.50 x 263.50
1990 593.50 m 547.00 m 466.00 k 257.50 k 224.50 i 101.50 n 0.00 z 21.00 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1991 624.00 o 0.00 z 546.50 j 441.00 292.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 733.50
Period of Record Statistics
MEAN 1305.18 1001.58 809.25 523.80 311.37 124.73 33.87 41.55 200.93 522.81 900.92 1173.81 7055.82
S.D. 223.38 163.23 96.73 89.24 82.28 46.20 23.63 27.14 76.31 77.27 102.19 148.04 529.97
SKEW 0.78 0.81 0.47 -0.03 -0.23 0.62 0.85 0.40 0.19 1.16 -0.11 0.22 -0.47
MAX 1854.50 1531.50 1077.50 734.50 468.10 244.82 100.23 103.52 402.50 846.00 1101.00 1460.00 8121.50
MIN 898.00 700.00 602.00 288.50 115.50 52.00 0.00 0.00 51.00 365.50 704.50 881.00 5884.00
NO YRS 53 60 61 53 60 68 71 71 66 54 53 53 26