PULLMAN 2 NW, WASHINGTON

Monthly Total Heating Degree Days

(456789)

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
1940 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 215.50 t 992.50 952.00 1944.50
1941 1007.00 760.50 676.50 505.00 382.00 194.50 6.50 82.00 362.00 552.00 715.00 998.50 6241.50
1942 1358.00 948.50 826.50 508.00 493.50 314.00 57.00 88.00 200.50 484.50 891.00 1014.50 7184.00
1943 1335.00 877.00 917.50 500.00 486.50 303.50 73.00 77.00 135.00 478.50 813.50 1091.00 7087.50
1944 1042.50 1028.00 963.50 560.50 353.50 228.00 80.50 88.00 180.50 284.00 863.50 1156.00 6828.50
1945 1010.00 853.50 915.00 674.00 353.50 276.50 47.50 64.50 319.00 443.00 888.00 1087.00 6931.50
1946 1097.00 904.50 775.00 547.50 357.00 249.50 58.50 57.00 248.50 692.00 876.00 996.50 6859.00
1947 1242.50 819.50 714.00 538.00 230.00 247.00 61.50 88.50 184.50 446.00 912.50 996.50 6480.50
1948 1106.00 1031.00 916.00 641.00 436.00 106.50 123.50 96.00 248.50 513.00 896.50 1312.00 7426.00
1949 1751.50 1037.00 790.50 452.00 268.00 186.00 60.50 50.00 164.00 639.50 618.00 1088.50 7105.50
1950 1640.00 926.50 862.50 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 3429.00
1951 0.00 z 0.00 z 0.00 z 547.50 0.00 z 0.00 z 6.00 l 4.50 x 103.50 s 554.00 851.00 1232.00 3184.50
1952 1269.50 975.50 880.50 468.00 353.00 221.00 62.50 76.50 145.50 352.50 937.50 1007.50 6749.50
1953 782.00 823.50 780.50 603.50 443.50 332.50 75.00 79.00 167.59 a 423.00 690.00 922.00 6122.09
1954 1108.50 790.50 886.00 640.50 377.50 323.50 103.00 133.00 247.00 547.50 653.50 1068.50 6879.00
1955 1127.00 981.56 a 1088.00 730.50 505.50 171.50 131.00 56.00 246.00 491.50 1048.50 1109.00 7686.06
1956 1059.50 1182.00 892.50 474.00 290.50 207.22 c 36.50 82.50 174.83 a 562.50 911.00 974.71 e 6847.76
1957 1595.95 c 954.50 792.50 565.50 291.00 173.50 65.50 89.50 126.00 545.50 866.00 663.00 h 6065.45
1958 971.00 640.50 802.50 616.00 212.00 124.00 29.00 10.00 230.50 403.00 827.00 895.50 5761.00
1959 1034.00 926.00 783.50 551.00 489.50 184.50 68.00 111.50 303.00 531.50 928.00 1001.00 6911.50
1960 1275.65 a 945.50 772.00 559.50 442.00 180.00 26.50 122.00 178.00 481.00 838.00 1086.00 6906.15
1961 990.50 730.00 769.00 620.00 394.00 88.00 21.00 4.50 335.00 576.50 925.34 a 1092.50 6546.34
1962 1174.50 868.00 900.00 495.00 512.50 239.48 a 116.00 99.50 190.50 504.00 777.00 928.50 6804.98
1963 1314.50 721.50 768.00 636.00 370.00 205.00 102.50 73.50 102.00 403.00 757.50 1100.50 6554.00
1964 1047.50 935.50 895.50 688.50 421.50 217.50 74.50 137.00 292.00 447.00 873.50 1140.50 7170.50
1965 1055.00 810.50 896.50 521.50 434.00 209.00 62.00 65.50 319.00 335.00 696.72 a 1002.50 6407.22
1966 1056.50 901.00 802.50 598.00 318.00 239.50 73.50 73.00 140.00 532.50 749.50 912.00 6396.00
1967 923.50 771.00 862.50 717.00 426.00 145.00 26.00 7.50 88.00 498.50 788.50 1093.00 6346.50
1968 1063.00 747.00 668.50 642.50 381.00 181.50 53.00 106.50 209.50 573.00 810.00 1157.00 6592.50
1969 1374.00 970.50 826.00 540.50 315.00 133.50 96.50 95.00 194.50 624.50 768.00 1035.00 6973.00
1970 1096.00 739.00 870.50 747.50 379.00 147.50 53.50 48.00 349.00 547.00 804.50 1102.00 6883.50
1971 985.00 825.50 962.00 638.00 343.00 316.50 109.00 26.00 338.50 603.50 821.50 1155.78 a 7124.28
1972 1167.50 934.50 713.00 679.00 319.00 177.41 a 70.50 46.50 324.50 526.50 767.50 1226.50 6952.41
1973 1153.00 844.50 771.00 596.00 346.00 206.50 65.50 83.50 217.50 545.50 936.00 909.00 6674.00
1974 1273.00 814.50 822.00 609.50 488.00 144.50 0.00 z 76.50 161.00 443.00 795.50 977.00 6604.50
1975 1143.00 1044.50 905.00 757.50 448.50 273.00 49.50 118.50 202.50 578.00 889.00 968.00 7377.00
1976 1030.50 942.00 974.50 635.50 390.50 318.50 91.50 122.00 130.00 530.00 796.00 1020.00 6981.00
1977 1272.00 793.00 873.50 489.50 492.50 112.50 110.00 76.00 319.00 556.50 899.50 1030.00 7024.00
1978 1042.00 829.50 710.50 619.00 473.50 187.50 83.00 134.00 282.50 529.00 1051.50 1283.50 7225.50
1979 1569.00 965.00 750.50 611.50 350.00 181.50 72.50 32.50 136.50 453.50 960.50 917.00 7000.00
1980 1287.53 a 874.00 857.00 459.31 a 412.50 297.00 79.00 171.00 213.00 493.50 790.00 917.50 6851.34
1981 904.50 835.50 722.00 596.50 432.00 309.50 133.00 52.00 249.50 605.00 675.00 c 1010.00 6524.50
1982 1162.50 974.00 789.50 692.50 420.00 159.00 117.00 55.50 238.00 578.50 976.50 1086.00 7249.00
1983 883.00 725.50 683.50 622.00 355.50 219.50 122.50 27.50 328.00 498.00 753.00 1337.50 6555.50
1984 1033.00 858.50 741.50 631.50 468.00 243.00 62.00 49.00 295.50 632.50 813.50 1216.50 7044.50
1985 1356.00 1089.00 860.50 494.50 320.00 178.50 9.50 83.00 373.50 593.00 1226.00 1421.50 8005.00
1986 946.50 867.50 626.00 591.50 396.00 104.50 141.00 8.50 328.50 463.50 887.00 1091.50 6452.00
1987 1151.50 780.00 736.00 412.00 279.50 140.50 78.00 91.50 145.00 441.50 748.00 1129.50 6133.00
1988 1143.50 803.50 789.50 513.50 382.00 214.00 82.50 59.50 256.00 303.50 796.00 1094.00 6437.50
1989 1085.00 1165.50 837.00 485.00 396.50 141.50 70.50 111.00 167.50 527.50 727.50 1011.50 6726.00
1990 964.50 923.50 736.00 457.50 415.00 207.00 46.00 66.50 89.00 576.00 751.50 1309.00 6541.50
1991 1121.00 662.00 831.00 572.00 459.00 292.00 56.00 29.00 137.50 507.00 822.00 914.50 6403.00
1992 958.50 710.00 602.00 466.00 273.00 114.50 56.50 78.00 236.00 438.50 883.00 1126.50 5942.50
1993 1272.50 1029.00 782.50 562.50 223.00 172.00 146.50 93.50 202.50 414.50 994.00 1008.00 6900.50
1994 846.00 960.50 691.50 467.50 291.00 194.00 39.50 42.00 118.50 550.00 961.55 a 1053.00 6215.05
1995 999.50 753.00 779.00 601.00 344.50 243.50 56.00 126.00 150.50 622.50 716.00 1042.50 6434.00
1996 1079.50 1015.50 0.00 z 552.50 487.00 199.50 56.50 56.50 286.00 562.00 862.50 1118.50 6276.00
1997 1083.00 879.00 0.00 z 672.00 292.50 253.00 71.00 22.50 159.50 526.00 730.50 1081.50 5770.50
1998 1023.00 752.00 752.50 574.50 382.00 197.50 2.50 36.00 127.00 496.50 739.50 1128.00 6211.00
1999 996.50 870.00 799.00 655.50 494.00 264.00 139.50 51.00 252.50 511.50 647.50 1018.35 a 6699.35
2000 1123.50 865.50 866.50 529.00 394.00 219.00 91.50 102.50 296.00 572.00 1106.38 a 1187.50 7353.38
2001 1099.50 941.50 741.00 638.50 302.50 209.00 34.50 28.50 109.50 525.00 709.00 1060.00 6398.50
2002 1017.00 913.50 933.50 565.00 410.00 172.00 54.00 82.50 198.00 671.00 776.00 939.50 6732.00
2003 880.50 842.50 707.00 566.00 385.50 150.00 33.00 26.50 173.50 381.50 925.00 995.50 6066.50
2004 1115.50 892.00 646.00 509.00 383.00 200.00 35.00 45.50 221.00 483.00 789.00 926.00 6245.00
2005 988.00 809.50 675.50 561.00 300.00 237.00 33.00 66.50 285.50 478.00 858.50 1149.00 6441.50
2006 838.50 912.00 790.00 553.50 346.50 147.00 23.50 59.00 195.50 545.50 786.00 1036.00 6233.00
2007 1207.50 811.00 665.50 552.50 334.00 178.50 14.00 69.00 231.00 534.50 854.00 1078.00 6529.50
2008 1165.50 867.00 835.50 672.50 337.00 240.00 51.50 68.50 195.50 503.00 678.50 1176.00 6790.50
2009 1120.50 837.50 927.00 600.00 357.50 0.00 z 57.00 36.50 0.00 z 664.00 780.00 1202.00 6582.00
2010 857.00 734.00 711.50 583.00 480.50 232.50 82.00 67.00 188.50 446.50 886.50 994.50 6263.50
2011 1011.50 983.50 786.50 704.00 458.50 263.00 113.50 31.00 128.50 490.50 843.50 1035.00 6849.00
2012 1014.50 856.02 a 809.00 503.89 c 392.00 221.00 44.00 41.50 131.50 516.00 716.50 1010.50 6256.41
2013 1158.50 806.08 b 720.50 16.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 45.50 z 2685.08
Period of Record Statistics
MEAN 1117.18 877.66 802.96 579.45 382.44 208.12 68.51 70.15 215.94 512.43 834.64 1069.63 6715.75
S.D. 183.43 109.51 93.23 77.83 73.27 58.78 34.40 34.69 74.71 81.12 111.00 111.34 423.54
SKEW 1.18 0.36 0.28 0.17 -0.18 0.22 0.38 0.33 0.31 -0.43 0.73 0.80 0.35
MAX 1751.50 1182.00 1088.00 757.50 512.50 332.50 146.50 171.00 373.50 692.00 1226.00 1421.50 8005.00
MIN 782.00 640.50 602.00 412.00 212.00 88.00 2.50 4.50 88.00 284.00 618.00 895.50 5761.00
NO YRS 72 72 70 71 70 69 69 70 69 71 72 71 65