POTLATCH 3 NNE, IDAHO

Monthly Total Heating Degree Days

(107301)

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
1915 0.00 z 0.00 z 662.00 504.50 455.00 308.00 114.00 6.50 349.00 527.00 927.00 1100.50 4953.50
1916 1594.00 987.50 819.00 627.50 569.00 295.00 157.50 110.00 309.50 693.00 983.00 1289.50 8434.50
1917 1261.50 1014.00 1148.50 732.50 477.50 305.50 60.50 66.50 196.00 552.50 655.00 856.00 7326.00
1918 1022.00 956.50 805.50 641.00 517.00 128.00 74.00 152.00 168.00 480.00 859.00 1095.50 6898.50
1919 1007.00 966.00 860.50 588.50 439.50 302.50 95.50 81.50 312.00 746.50 945.50 1353.00 7698.00
1920 1057.00 938.50 877.00 731.00 535.50 299.00 46.50 102.50 288.50 620.00 820.50 1014.50 7330.50
1921 1075.50 926.50 814.00 697.50 417.00 163.50 116.00 91.50 416.50 488.50 819.50 1124.50 7150.50
1922 1382.50 1118.50 978.50 720.00 487.00 103.00 56.50 63.50 203.50 482.50 960.50 1281.50 7837.50
1923 991.50 1111.00 873.50 614.50 430.50 248.00 44.00 79.50 243.50 556.00 770.50 1059.50 7022.00
1924 1228.50 767.50 871.00 646.50 253.00 207.50 90.00 111.50 254.50 562.50 872.50 1258.50 7123.50
1925 997.50 745.00 793.00 517.00 309.00 193.00 18.50 93.50 276.50 638.50 806.50 920.50 6308.50
1926 1115.50 747.50 731.50 414.00 366.00 207.00 43.00 83.00 425.50 540.50 742.50 1077.50 6493.50
1927 1123.23 a 869.00 856.50 641.00 509.00 166.50 62.50 80.50 332.00 501.50 756.50 1356.50 7254.73
1928 1084.00 963.50 737.50 666.50 284.00 243.50 58.50 132.50 277.50 546.50 821.00 1097.00 6912.00
1929 1458.00 1265.00 794.50 714.50 396.50 227.00 74.00 49.00 362.50 454.00 874.50 902.00 7571.50
1930 1595.00 750.00 778.50 433.50 428.50 236.50 43.00 36.00 217.50 623.50 872.00 1189.50 7203.50
1931 961.00 879.00 800.50 576.50 305.50 187.50 43.50 53.50 309.50 541.50 1027.50 1121.00 6806.50
1932 1208.50 1159.00 937.50 590.50 418.00 123.00 131.50 46.00 0.00 z 0.00 z 0.00 z 0.00 z 4614.00
1933 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
1934 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
1935 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
1936 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 511.50 950.00 959.00 2420.50
1937 1685.50 991.50 727.50 644.50 434.50 256.50 44.00 141.50 203.00 426.50 702.00 917.00 7174.00
1938 975.00 831.50 777.00 558.00 366.00 113.00 34.50 103.50 83.50 431.00 920.50 982.50 6176.00
1939 908.50 1044.50 799.50 482.50 316.00 262.50 80.50 68.50 222.00 529.50 664.00 821.50 6199.50
1940 1016.00 804.00 658.00 476.50 253.00 128.00 29.00 67.50 137.50 368.00 904.50 877.00 5719.00
1941 750.00 g 757.50 661.00 505.50 393.00 200.00 18.00 78.00 344.00 519.50 714.50 948.50 5139.50
1942 1166.00 889.50 782.00 458.50 415.00 269.00 42.00 77.50 198.00 484.00 837.50 968.75 a 6587.75
1943 1279.00 830.00 917.00 484.00 495.50 291.00 62.00 97.50 170.00 478.00 759.00 1071.00 6934.00
1944 1021.00 975.00 919.00 510.00 308.00 93.00 f 7.50 q 92.50 176.50 352.50 850.50 1113.00 6318.00
1945 971.00 829.50 840.00 640.00 314.50 221.00 27.00 41.00 296.00 423.00 834.00 1022.00 6459.00
1946 1043.50 844.00 703.70 a 491.67 c 322.50 220.86 a 47.50 45.00 228.50 653.50 817.50 d 902.00 6320.23
1947 1157.00 747.50 665.50 508.50 205.50 182.50 41.13 e 66.50 189.50 433.00 821.38 a 891.00 5909.01
1948 1046.50 958.61 b 840.00 585.50 367.50 75.50 84.00 69.00 236.50 532.50 847.50 1236.50 6879.61
1949 1699.50 1008.52 a 0.00 z 307.00 k 259.50 181.03 a 81.00 71.50 190.00 669.50 610.50 1092.46 d 5863.52
1950 1542.80 c 907.50 869.50 624.23 d 446.00 186.00 50.50 37.50 253.50 500.00 788.00 850.00 7055.53
1951 1082.50 886.00 931.72 d 562.00 347.00 217.20 e 40.50 99.00 197.00 570.50 816.50 1214.00 6963.92
1952 1206.50 943.00 881.00 467.07 a 312.50 190.00 54.00 84.50 168.50 428.00 920.00 999.00 6654.07
1953 759.50 a 820.62 b 644.50 f 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 96.50 v 448.50 710.50 943.00 3682.12
1954 1106.50 759.00 905.50 656.50 384.00 319.50 85.50 153.00 288.50 591.50 668.00 1048.50 6966.00
1955 1130.50 1047.50 1124.00 766.00 544.00 212.00 137.50 89.50 309.00 532.34 b 679.00 n 1117.50 7009.84
1956 1094.00 1186.50 914.00 516.50 332.00 235.50 52.50 102.00 253.93 b 0.00 z 0.00 z 0.00 z 4686.93
1957 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 29.00 h 111.00 188.00 566.00 871.61 b 871.50 2608.11
1958 925.50 628.00 827.50 601.50 188.50 109.00 26.00 46.50 376.00 574.50 809.50 867.50 5980.00
1959 989.50 892.00 778.62 a 521.00 440.00 164.50 67.00 103.00 285.00 518.50 876.50 989.00 6624.62
1960 1209.50 925.00 765.00 549.31 a 390.00 142.00 19.00 124.00 214.66 a 499.50 795.00 1072.50 6705.47
1961 969.50 714.50 756.00 621.50 349.00 74.00 22.00 5.50 355.50 580.00 939.64 b 1100.00 6487.14
1962 1211.87 d 604.00 h 867.50 430.50 451.50 206.50 95.50 96.50 182.00 496.50 738.00 878.50 5654.87
1963 1305.00 676.50 732.00 597.00 347.50 179.00 71.50 58.38 a 93.50 411.00 733.00 1036.50 6240.88
1964 1019.00 935.00 885.00 635.50 414.88 a 186.72 a 61.00 0.00 z 310.00 0.00 z 754.00 f 1148.00 5595.11
1965 1045.50 839.50 953.00 572.00 488.50 267.50 94.50 107.00 447.50 464.00 760.50 1027.50 7067.00
1966 1055.50 934.50 836.00 649.00 381.50 296.50 119.50 132.50 171.00 609.00 799.50 911.50 6896.00
1967 968.50 818.50 902.00 741.00 469.00 165.00 79.50 46.50 162.50 563.50 833.50 1117.00 6866.50
1968 1106.50 792.00 727.50 706.00 455.00 258.00 106.00 169.50 294.00 634.50 857.00 1214.00 7320.00
1969 1404.50 993.50 927.00 591.00 359.00 161.79 b 150.00 177.50 290.50 686.50 805.00 1082.00 7628.29
1970 1122.50 770.00 900.00 759.50 418.00 164.00 64.00 93.50 446.50 637.50 816.50 1151.50 7343.50
1971 1074.50 903.00 989.50 662.00 391.50 321.21 a 138.00 54.50 451.00 691.50 862.00 1194.00 7732.71
1972 1250.00 939.00 731.50 719.00 368.00 217.50 119.50 58.00 409.00 640.50 815.50 1240.50 7508.00
1973 1157.50 854.50 797.22 a 681.00 407.50 269.00 101.50 143.00 318.00 649.00 978.00 964.50 7320.72
1974 1302.50 849.00 874.50 649.00 574.00 185.50 128.65 a 161.50 333.00 645.83 a 789.64 b 1002.33 a 7495.46
1975 1151.13 a 1048.00 961.50 765.50 458.28 a 333.50 86.50 249.03 a 389.00 688.00 872.50 910.00 7912.95
1976 988.50 922.00 960.50 642.50 432.50 378.00 132.50 137.00 232.50 614.00 832.50 1032.00 7304.50
1977 1276.50 784.00 906.00 615.00 c 508.29 b 153.50 169.00 98.00 396.21 a 688.20 a 988.00 1125.00 7707.70
1978 1087.50 800.50 697.50 602.50 491.50 223.50 102.50 196.00 354.00 672.50 1107.32 b 1481.00 7816.32
1979 1667.28 a 973.50 747.50 592.00 397.50 220.00 82.67 a 59.00 217.50 541.00 936.50 869.50 7303.95
1980 1276.50 802.00 855.08 a 456.67 c 390.82 c 275.00 88.00 233.00 270.00 556.50 802.24 a 904.34 b 6910.16
1981 903.13 a 855.50 756.50 573.00 446.50 303.50 163.00 86.00 316.61 b 673.50 788.57 b 1061.75 e 6927.56
1982 1237.50 987.28 c 820.00 685.00 472.50 165.52 a 134.00 111.00 322.00 624.00 971.00 1143.00 7672.80
1983 910.00 752.50 719.50 661.00 425.00 267.50 162.00 44.50 418.50 601.50 798.00 1375.50 7135.50
1984 1058.50 859.00 771.00 671.00 508.50 294.50 110.50 106.00 371.00 703.50 867.50 1239.50 7560.50
1985 1332.00 1117.50 973.50 562.50 370.00 247.50 18.50 167.00 429.00 663.50 1295.00 1434.27 a 8610.27
1986 980.50 875.50 658.50 648.00 410.00 145.50 197.00 19.00 387.50 545.00 899.50 1115.00 6881.00
1987 1108.50 805.50 753.00 436.50 341.00 187.00 103.50 152.00 239.00 574.00 785.50 1162.00 6647.50
1988 1180.00 826.00 828.00 530.50 431.50 233.00 126.00 115.50 315.50 409.50 841.00 1099.00 6935.50
1989 1098.00 1216.50 863.00 548.00 466.00 189.00 99.00 154.00 277.50 602.00 755.00 1004.50 7272.50
1990 985.00 990.00 768.00 529.50 452.50 244.00 68.00 96.50 149.00 606.00 793.50 1328.50 7010.50
1991 1132.00 677.00 865.50 620.50 503.50 328.50 111.50 61.50 279.00 643.50 846.50 910.00 6979.00
1992 953.50 723.00 646.00 532.00 342.00 161.00 102.00 133.50 315.50 531.00 928.00 1217.50 6585.00
1993 1328.00 1057.50 798.50 614.00 261.00 248.50 241.00 173.50 351.50 540.00 1034.00 1005.50 7653.00
1994 874.50 966.50 764.50 512.00 359.50 265.00 80.50 92.50 210.00 621.50 999.00 1075.00 6820.50
1995 995.00 784.50 803.00 636.00 390.00 254.50 101.00 172.00 227.50 655.50 738.50 1054.00 6811.50
1996 1129.00 1049.00 847.50 579.50 531.50 261.50 88.50 116.00 377.50 628.00 854.50 1108.50 7571.00
1997 1103.50 890.50 804.00 666.00 333.50 227.50 119.00 50.00 200.00 614.00 774.00 1080.50 6862.50
1998 1048.00 751.50 792.50 598.50 376.50 241.00 14.00 65.00 153.50 620.50 792.00 1130.97 b 6583.97
1999 981.15 a 862.00 833.00 680.00 530.00 316.50 159.50 76.90 e 325.34 a 567.82 a 661.00 674.50 k 5993.22
2000 1091.00 905.00 825.63 a 523.00 468.50 257.00 155.50 126.00 334.00 601.50 1112.50 1196.00 7595.63
2001 1136.00 1035.00 796.50 664.50 376.00 314.50 124.00 64.50 198.10 a 615.50 721.50 1124.50 7170.60
2002 1046.00 973.50 1012.00 684.50 475.50 269.00 64.50 155.50 285.00 a 0.00 z 0.00 z 0.00 z 4965.50
2003 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
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 743.50 589.00 371.50 264.00 52.50 51.50 293.00 545.50 933.50 1203.04 e 5047.04
2006 898.00 959.00 859.50 600.50 372.00 189.50 28.50 66.00 235.50 622.00 839.00 1035.00 6704.50
2007 1233.00 869.50 572.00 g 500.00 h 401.50 217.20 e 7.00 86.50 273.00 568.00 894.00 1120.00 5669.70
2008 1175.00 918.00 940.50 755.00 416.50 311.00 21.50 o 69.50 g 225.50 540.50 734.50 1263.50 7280.00
2009 1159.50 845.00 982.50 684.50 393.50 140.00 f 38.50 h 42.00 f 25.00 o 777.38 e 791.40 e 1236.50 6870.28
2010 855.00 780.00 472.50 l 345.50 l 430.50 h 216.50 i 43.00 l 11.00 w 0.00 z 0.00 z 0.00 z 0.00 z 1635.00
2011 100.00 z 769.00 g 294.50 t 262.00 t 530.74 b 136.00 l 54.00 p 31.00 c 178.27 d 27.50 z 648.50 h 822.00 g 740.01
2012 1015.00 916.50 877.00 548.00 456.50 286.50 50.00 50.00 105.00 l 566.00 765.50 1005.50 6536.50
2013 1131.00 852.50 795.48 c 15.00 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 2778.98
Period of Record Statistics
MEAN 1132.90 899.10 831.39 601.01 406.73 224.95 84.06 95.49 275.43 566.97 842.83 1080.35 7049.05
S.D. 187.65 125.30 97.94 86.55 80.48 64.16 46.23 47.36 85.63 86.60 109.20 143.89 545.79
SKEW 1.17 0.50 0.54 -0.13 -0.28 -0.16 0.67 0.76 0.13 -0.19 1.01 0.41 0.14
MAX 1699.50 1265.00 1148.50 766.00 574.00 378.00 241.00 249.03 451.00 777.38 1295.00 1481.00 8610.27
MIN 759.50 628.00 646.00 414.00 188.50 74.00 7.00 5.50 83.50 352.50 610.50 821.50 5719.00
NO YRS 88 88 87 86 89 86 85 87 87 87 86 87 72