PRIEST RIVER EXP STN, IDAHO

Monthly Total Heating Degree Days

(107386)

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
1898 0.00 z 636.00 g 977.00 542.00 422.50 173.00 101.50 3.50 j 309.00 747.50 0.00 z 0.00 z 3272.50
1899 0.00 z 0.00 z 121.00 z 760.50 514.50 229.50 f 37.50 125.00 156.00 643.00 653.00 1030.50 3920.00
1900 1041.50 1054.00 725.00 474.50 312.50 35.50 y 42.00 g 171.50 303.50 638.00 987.00 935.50 6643.00
1901 1179.50 1044.00 833.00 672.50 322.00 324.50 102.00 19.50 393.00 500.00 789.00 1062.00 7241.00
1902 1238.50 914.00 922.50 666.50 385.00 327.50 165.00 153.50 390.50 548.50 944.00 1153.50 7809.00
1903 1131.50 1213.13 e 952.00 696.50 333.00 h 87.00 f 160.50 116.50 431.50 0.00 z 964.50 1107.50 6773.63
1904 276.50 w 634.50 j 1016.50 629.40 e 416.00 270.00 91.50 93.00 0.00 z 0.00 z 0.00 z 0.00 z 2516.40
1905 1210.00 1136.00 742.00 491.50 328.00 94.00 7.00 67.00 256.50 764.50 909.00 1099.35 d 7104.85
1906 1123.00 962.00 0.00 z 0.00 z 0.00 z 248.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2333.00
1907 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
1908 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
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 1221.50 1221.50
1912 1333.00 1002.50 1032.50 646.00 419.00 177.00 150.00 230.00 495.00 808.50 950.50 1179.50 8423.50
1913 1403.50 1300.00 1079.00 697.50 482.50 206.00 183.50 146.00 372.50 787.50 918.00 1180.00 8756.00
1914 1101.00 0.00 z 880.00 608.50 392.50 279.50 76.50 123.00 418.50 594.50 872.50 1375.00 6721.50
1915 1262.00 894.50 790.00 501.00 423.50 287.00 130.00 14.00 393.50 617.00 1027.50 1251.00 7591.00
1916 1708.00 1068.00 929.50 672.50 588.00 291.21 a 155.50 120.00 354.50 749.00 1088.00 1412.50 9136.71
1917 1389.00 1075.00 1170.50 793.00 485.00 302.50 79.00 87.50 271.50 672.50 840.00 1075.00 8240.50
1918 1167.00 1143.50 893.00 671.00 554.00 176.00 100.50 224.50 240.50 557.50 977.00 1170.00 7874.50
1919 1150.00 1045.50 962.50 613.89 c 465.00 273.00 84.50 84.50 351.50 803.50 1096.50 1422.00 8352.39
1920 1252.00 1068.50 942.00 756.00 566.00 314.00 48.50 120.50 383.50 698.00 921.21 a 1107.70 c 8177.90
1921 1171.00 1003.50 940.00 716.00 422.00 166.50 125.50 97.00 497.50 613.05 b 990.50 1275.50 8018.05
1922 1436.00 1255.50 1035.50 755.00 498.00 105.50 67.00 70.00 292.00 573.50 1010.00 1462.88 b 8560.88
1923 1138.00 1240.00 1005.50 674.00 449.00 219.50 42.00 91.50 271.00 597.50 903.62 a 1147.50 7779.12
1924 1408.00 871.50 907.50 687.50 311.50 244.50 94.50 140.00 312.00 665.00 979.50 1438.50 8060.00
1925 1157.00 854.50 873.50 548.00 345.50 198.00 25.00 128.00 297.00 751.00 938.00 973.00 7088.50
1926 1166.50 871.50 804.00 499.50 415.00 204.50 37.50 118.50 502.50 590.50 860.50 1169.00 7239.50
1927 1249.50 1000.50 973.50 695.50 514.00 173.50 73.00 81.50 365.00 615.50 907.50 1456.00 8105.00
1928 1212.50 1101.48 a 867.50 697.50 314.00 236.00 66.00 126.50 296.50 660.00 949.50 1197.50 7724.98
1929 1602.50 1326.50 889.50 716.00 410.00 225.00 96.50 62.00 388.50 644.00 1028.00 1018.50 8407.00
1930 1658.50 942.50 900.00 497.00 439.00 268.00 75.00 75.50 276.50 728.50 977.50 1192.00 8030.00
1931 1079.00 994.00 896.00 617.00 344.00 215.50 69.00 91.00 358.00 667.50 1080.50 1218.50 7630.00
1932 1333.00 1215.50 1015.50 634.00 430.50 182.50 114.00 95.50 317.50 672.00 842.00 1303.00 8155.00
1933 1175.00 1301.50 963.50 690.50 510.50 204.50 68.00 66.00 404.50 601.00 849.00 978.50 7812.50
1934 1031.50 876.00 752.00 386.50 318.50 177.50 83.00 70.00 396.50 597.00 758.50 1092.00 6539.00
1935 1237.50 1015.50 1051.00 743.50 449.50 236.50 96.00 139.50 232.50 706.00 1069.00 1128.50 8105.00
1936 1142.00 1536.00 981.00 612.00 265.00 157.00 41.00 79.50 339.00 576.00 1082.50 1092.50 7903.50
1937 1813.50 1149.00 893.00 716.00 388.00 188.50 44.50 184.00 269.50 535.00 857.00 1106.00 8144.00
1938 1186.50 981.50 903.00 616.00 415.50 160.00 44.00 139.50 134.50 577.50 1056.00 1148.00 7362.00
1939 1086.50 1166.50 911.00 555.00 362.00 319.50 87.00 64.50 278.50 643.00 902.00 986.50 7362.00
1940 1264.00 971.00 799.50 563.50 303.50 141.50 41.50 58.38 a 136.50 509.00 1051.00 1110.00 6949.38
1941 1099.00 893.50 727.00 494.00 367.00 174.00 16.00 93.50 395.00 642.00 828.50 1079.50 6809.00
1942 1356.50 996.50 912.50 564.00 446.50 283.50 57.50 84.00 250.00 579.50 1011.50 1129.50 7671.50
1943 1442.00 940.00 1104.50 569.50 506.50 304.00 84.00 111.50 248.00 577.00 915.50 1204.50 8007.00
1944 1203.50 1024.50 997.50 584.50 367.50 161.00 78.50 105.00 228.50 471.50 901.50 1278.50 7402.00
1945 1208.00 0.00 z 1003.00 745.00 365.50 243.00 46.50 69.50 363.50 570.00 969.50 1173.00 6756.50
1946 1173.00 994.50 859.50 598.50 345.00 260.00 74.00 98.50 343.50 784.50 1018.50 1144.50 7694.00
1947 1332.50 973.50 810.50 599.00 313.50 247.00 69.50 125.50 321.00 578.00 981.50 1094.00 7445.50
1948 1265.50 1124.50 1014.50 723.00 412.50 95.00 127.50 138.50 313.50 658.50 979.00 1358.50 8210.50
1949 1740.50 1174.50 959.00 583.50 308.00 247.00 96.50 92.50 276.50 754.50 812.50 1204.00 8249.00
1950 1745.50 1051.00 1008.50 744.50 497.00 223.00 66.00 48.50 288.00 655.50 966.50 1035.00 8329.00
1951 1244.50 1047.00 1080.00 649.00 407.00 265.00 66.00 104.00 328.50 669.60 a 976.00 1366.50 8203.10
1952 1289.00 1063.50 984.00 630.00 380.00 240.52 a 89.38 a 118.50 224.50 532.50 1015.00 1113.50 7680.40
1953 935.50 925.50 890.00 671.00 437.50 291.50 86.50 96.00 282.00 572.00 853.50 1067.00 7108.00
1954 1280.00 892.50 1045.50 747.00 408.50 309.00 115.00 155.50 313.00 702.50 777.00 1126.00 7871.50
1955 1193.50 1149.50 1188.00 803.50 553.00 198.50 131.00 126.00 326.50 625.50 1176.50 1275.50 8747.00
1956 1202.00 1245.50 1001.00 602.00 324.50 267.50 70.50 107.50 293.50 663.00 1058.00 1135.00 7970.00
1957 1584.50 1074.50 952.50 634.50 253.50 176.50 117.50 151.50 233.50 686.00 997.50 1043.50 7905.50
1958 1091.50 826.50 878.00 654.00 208.50 104.50 32.00 33.50 325.50 602.50 1008.00 1090.50 6855.00
1959 1199.50 1053.50 926.00 622.00 514.00 202.50 91.00 178.00 374.00 663.00 1119.50 1154.00 8097.00
1960 1381.50 1085.00 959.00 652.50 485.00 204.50 31.00 193.50 299.00 608.00 957.50 1207.50 8064.00
1961 1149.50 855.50 854.00 669.31 a 403.00 97.00 37.00 7.50 407.00 706.00 1087.00 1239.00 7511.81
1962 1392.00 1013.00 1002.00 574.50 463.50 233.50 130.00 135.50 276.50 628.00 843.50 1039.00 7731.00
1963 1407.00 892.50 852.50 644.50 414.50 190.00 102.00 74.50 147.00 540.00 895.50 1184.00 7344.00
1964 1129.50 1059.50 1027.00 722.00 448.50 183.50 81.50 201.00 412.50 611.00 963.00 1301.00 8140.00
1965 1118.00 1017.00 1081.50 607.50 484.00 217.00 65.50 100.50 474.00 578.00 850.00 1123.50 7716.50
1966 1153.50 959.50 930.50 652.00 343.00 289.00 75.50 94.50 152.50 638.50 926.50 1040.00 7255.00
1967 1087.00 936.00 996.00 767.50 440.00 153.00 55.00 25.00 155.50 644.50 945.50 1226.00 7431.00
1968 1242.00 980.50 834.50 706.00 437.00 245.00 86.00 150.00 319.50 732.50 957.00 1323.00 8013.00
1969 1457.50 1062.00 931.00 648.00 326.50 140.00 129.50 130.50 267.00 710.50 944.50 1119.00 7866.00
1970 1291.00 963.50 992.50 796.50 384.50 147.00 43.00 62.50 392.50 710.00 971.00 1224.50 7978.50
1971 1186.00 1002.00 1034.50 682.50 340.00 240.50 105.00 39.50 415.50 715.50 979.50 1298.00 8038.50
1972 1395.00 1043.50 865.00 767.50 318.50 170.00 88.00 22.50 382.00 633.50 920.50 1319.50 7925.50
1973 1324.50 961.50 865.00 656.00 352.00 204.50 49.00 85.50 250.50 618.50 1007.50 1101.00 7475.50
1974 1292.00 941.00 939.00 600.00 491.00 123.00 56.50 74.00 225.50 618.50 863.00 1065.00 7288.50
1975 1262.00 1098.50 991.00 750.00 396.50 206.00 18.00 97.00 227.00 594.50 1024.00 1138.00 7802.50
1976 1153.50 1051.50 1071.00 672.50 373.50 289.50 66.50 107.00 201.50 633.00 974.50 1147.52 a 7741.52
1977 1333.50 923.00 906.00 569.50 508.00 156.50 125.00 78.50 350.50 642.50 1029.50 1184.00 7806.50
1978 1142.50 886.50 809.00 584.50 446.00 139.50 36.00 137.50 289.50 608.00 1063.50 1415.00 7557.50
1979 1674.00 1047.00 900.00 685.50 347.00 148.50 56.50 7.00 167.00 549.00 1098.00 995.50 7675.00
1980 1412.57 a 983.00 928.50 504.00 314.00 232.50 71.50 178.50 280.00 604.00 922.00 1060.00 7490.57
1981 1104.50 931.50 793.50 648.00 414.50 316.50 87.50 42.50 277.00 677.50 861.50 1163.00 7317.50
1982 1286.50 1064.00 883.00 742.00 396.00 112.50 125.50 83.50 266.50 667.00 1041.00 1197.00 7864.50
1983 1053.50 891.50 787.00 624.50 349.50 179.50 108.50 32.00 392.50 620.00 872.00 1506.00 7416.50
1984 1207.50 1000.00 870.50 702.00 540.00 300.50 103.50 105.00 438.00 815.00 1013.00 1415.50 8510.50
1985 1357.50 1190.00 1011.00 635.00 315.00 177.50 1.00 118.50 412.00 705.50 1303.50 1364.50 8591.00
1986 1150.00 1047.00 795.00 652.00 388.00 84.50 137.00 5.00 402.00 591.00 957.50 1138.50 7347.50
1987 1231.50 919.00 811.50 473.50 317.00 124.00 76.00 120.00 204.00 628.00 865.00 1208.00 6977.50
1988 1304.50 988.50 860.50 535.00 390.00 194.50 105.50 77.00 338.50 559.50 978.00 1251.50 7583.00
1989 1192.00 1281.50 1003.50 591.50 437.00 140.50 65.00 140.50 299.50 668.50 875.50 1099.50 7794.50
1990 1090.00 1036.00 865.50 524.00 425.50 235.00 44.00 75.50 151.50 734.50 915.00 1430.50 7527.00
1991 1317.50 851.00 976.00 614.50 367.00 198.00 60.50 51.00 252.00 702.50 995.50 1079.00 7464.50
1992 1058.00 883.00 692.00 537.50 286.50 117.50 91.50 135.50 404.50 615.00 965.50 1355.50 7142.00
1993 1401.50 1156.50 915.50 652.50 229.50 222.50 223.50 159.00 337.50 599.50 1143.50 1163.00 8204.00
1994 1029.00 1082.00 866.00 534.50 333.50 214.00 41.00 70.50 218.50 707.00 1086.00 1180.50 7362.50
1995 1223.50 926.00 922.00 666.00 329.50 208.50 71.50 178.00 255.00 743.50 925.50 1177.50 7626.50
1996 1277.50 1133.00 967.50 626.00 526.00 211.50 71.00 92.50 402.00 744.50 1039.00 1303.50 8394.00
1997 1279.50 1032.00 964.50 758.00 355.50 211.00 82.00 65.00 240.00 657.00 971.00 1155.50 7771.00
1998 1165.50 891.00 849.50 583.50 320.00 216.50 11.50 64.00 184.00 685.50 844.50 1221.00 7036.50
1999 1085.00 930.50 903.00 689.00 483.50 269.50 138.50 53.50 396.00 712.00 851.50 1102.00 7614.00
2000 1221.50 1007.00 880.00 576.00 445.50 229.50 81.50 121.00 375.00 701.00 1135.00 1277.50 8050.50
2001 1171.00 1083.50 882.50 698.50 372.00 274.50 74.50 55.50 217.50 740.50 858.00 1156.50 7584.50
2002 1151.00 1031.50 1042.00 626.00 460.00 162.50 58.50 125.50 321.00 812.50 976.00 1040.00 7806.50
2003 1049.00 964.50 846.00 618.00 428.50 152.50 50.00 28.50 277.50 587.50 1112.50 1196.50 7311.00
2004 1206.00 999.50 819.50 543.50 404.50 198.00 55.50 77.50 351.50 646.50 945.50 1080.50 7328.00
2005 1265.50 994.00 833.50 603.50 333.50 223.50 51.00 95.50 367.50 618.50 1000.50 1330.00 7716.50
2006 990.00 1062.50 936.00 602.00 367.00 160.50 25.00 81.00 292.50 717.00 962.00 1203.50 7399.00
2007 1325.00 932.50 829.00 631.00 355.50 210.50 12.00 82.00 342.00 699.00 999.00 1206.00 7623.50
2008 1328.50 999.50 964.00 812.00 369.50 259.50 58.50 118.50 348.00 717.50 886.50 1405.50 8267.50
2009 1273.50 1011.00 1032.50 674.50 391.50 175.00 44.50 66.50 226.00 819.50 941.50 1374.00 8030.00
2010 1072.00 868.00 825.50 634.00 490.00 238.00 107.00 126.00 333.50 638.50 1045.00 1202.50 7580.00
2011 1229.50 1152.50 925.00 792.50 470.00 272.00 118.50 86.00 222.50 651.00 1013.00 1201.50 8134.00
2012 1179.00 1015.00 903.00 555.00 413.00 220.50 27.50 66.00 262.50 653.00 843.50 1068.00 7206.00
2013 1225.50 922.50 900.03 a 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 3048.03
Period of Record Statistics
MEAN 1252.86 1029.10 923.63 640.36 402.00 211.03 78.65 99.18 310.32 652.32 961.12 1188.45 7758.55
S.D. 165.49 121.07 93.25 83.29 75.87 58.65 39.42 45.95 82.65 73.47 96.55 123.53 463.16
SKEW 1.26 1.10 0.11 -0.21 0.11 -0.04 0.69 0.33 -0.03 0.22 0.15 0.54 0.11
MAX 1813.50 1536.00 1188.00 812.00 588.00 327.50 223.50 230.00 502.50 819.50 1303.50 1506.00 9136.71
MIN 935.50 826.50 692.00 386.50 208.50 84.50 1.00 5.00 134.50 471.50 653.00 935.50 6539.00
NO YRS 108 106 109 109 108 107 108 108 108 107 107 108 102