PARMA EXPERIMENT STN, IDAHO

Monthly Total Heating Degree Days

(106844)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201206
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
1922 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 675.50 f 1138.50 1138.50
1923 911.50 970.00 723.50 433.00 223.00 103.00 0.50 0.00 87.50 450.50 767.50 1090.50 5760.50
1924 1345.00 707.00 770.50 430.00 120.50 51.96 b 0.00 22.00 154.00 391.50 782.00 1456.47 b 6230.93
1925 1176.45 a 702.00 645.50 368.00 133.09 b 92.07 a 0.00 42.88 a 123.00 473.00 778.50 967.50 5501.99
1926 1086.55 a 694.50 611.50 292.50 211.00 27.50 0.00 10.00 282.00 376.50 259.00 q 1116.50 4708.55
1927 1102.50 689.50 685.50 488.50 257.00 21.00 0.50 6.50 171.50 415.50 589.00 1171.50 5598.50
1928 1119.00 924.50 601.92 a 483.60 e 80.50 61.00 3.00 4.50 103.00 364.00 715.50 1215.00 5675.52
1929 1364.50 1127.50 621.00 464.50 182.50 75.00 0.00 b 0.00 161.00 363.50 852.00 889.50 6101.00
1930 1514.50 715.50 574.00 238.00 218.00 50.50 0.00 0.00 93.00 439.00 875.50 1264.28 a 5982.28
1931 1125.50 799.50 643.00 398.50 132.50 23.50 0.00 0.00 122.50 341.50 849.50 1195.00 5631.00
1932 1217.50 1024.50 682.50 371.50 178.50 49.00 7.00 22.50 56.50 449.00 747.00 1270.00 6075.50
1933 1110.50 1231.00 708.50 472.00 327.50 11.00 1.00 19.50 168.00 336.00 771.50 791.50 5948.00
1934 844.00 637.00 481.50 227.50 83.50 48.10 a 0.00 0.00 191.50 394.00 618.50 996.00 4521.60
1935 1074.50 885.00 744.00 438.00 220.50 36.00 9.50 15.00 78.00 444.00 956.00 1171.50 6072.00
1936 1077.00 1079.50 754.50 339.50 136.00 44.00 7.50 1.00 144.50 368.00 966.50 1025.00 5943.00
1937 1616.50 970.50 641.50 471.50 156.50 72.00 0.00 30.00 116.00 365.50 639.50 884.00 5963.50
1938 917.00 699.00 700.00 392.50 238.50 49.50 3.50 7.50 56.50 400.50 929.00 1032.50 5426.00
1939 970.00 900.00 607.50 341.50 109.00 93.50 0.00 0.50 113.00 429.00 834.50 858.00 5256.50
1940 1012.50 744.00 597.50 396.00 143.50 27.93 a 0.00 0.00 127.50 390.00 893.00 980.00 5311.93
1941 1044.70 a 0.00 z 586.00 425.00 221.50 104.50 0.00 18.00 196.50 432.00 737.50 922.50 4688.20
1942 1379.00 908.50 754.50 396.50 330.50 127.00 3.00 38.50 140.50 423.00 776.00 965.00 6242.00
1943 1110.50 836.00 770.50 325.00 337.00 148.00 18.50 30.50 86.50 423.00 804.00 1053.50 5943.00
1944 1358.00 874.50 794.50 458.50 245.50 160.00 17.50 16.50 192.00 403.00 823.00 1133.00 6476.00
1945 1058.50 720.50 739.50 508.00 270.50 167.50 1.50 18.00 j 226.00 359.50 699.00 1009.50 5760.00
1946 1045.00 837.00 565.50 367.00 193.50 39.50 3.00 1.50 185.00 566.00 789.00 907.50 5499.50
1947 1253.50 711.50 579.50 413.00 108.50 113.00 0.50 10.50 149.00 347.00 809.00 998.00 5493.00
1948 991.50 865.50 783.00 486.00 274.00 26.50 12.50 14.00 f 156.60 e 444.85 a 799.66 a 1258.00 6098.11
1949 1709.00 913.50 656.00 309.11 b 148.00 57.50 1.50 0.00 88.50 531.81 b 707.78 c 999.75 c 6122.45
1950 1272.66 c 932.96 c 745.72 d 449.40 e 252.00 f 67.50 b 6.00 7.00 133.00 305.00 698.57 b 931.00 5548.81
1951 1110.83 a 870.00 880.00 374.46 b 204.50 105.50 0.00 21.50 94.00 489.80 a 830.50 1099.39 c 6080.49
1952 1194.03 b 1010.77 e 783.78 a 324.11 b 170.00 74.00 9.00 4.50 51.50 318.00 915.50 977.50 5832.70
1953 730.50 749.50 648.50 499.50 367.00 159.50 0.00 8.50 62.50 385.43 a 620.00 1006.00 5236.93
1954 866.97 a 713.50 723.00 376.00 161.00 159.00 6.00 37.50 130.00 491.50 685.00 1096.00 5445.47
1955 1253.00 1019.50 828.00 552.00 307.50 35.00 48.00 0.00 176.00 426.00 893.50 918.00 6456.50
1956 1005.00 1074.00 669.00 384.00 206.00 93.00 11.50 24.00 148.00 517.00 912.50 1072.50 6116.50
1957 1459.00 974.00 656.00 442.50 212.00 64.50 0.50 8.50 81.00 505.00 862.00 953.50 6218.50
1958 1117.00 663.00 737.00 474.50 98.50 38.50 2.00 1.50 160.00 384.00 795.00 902.50 5373.50
1959 922.00 752.50 719.00 356.00 339.50 46.50 10.00 19.00 220.50 467.07 a 903.50 1158.00 5913.57
1960 1315.00 922.00 697.50 413.50 286.50 14.50 0.00 74.50 82.50 470.50 767.00 1148.50 6192.00
1961 1104.00 669.50 624.00 445.50 200.47 a 7.00 0.00 0.52 a 225.00 504.50 870.00 1068.00 5718.48
1962 1410.50 960.50 741.50 312.50 237.00 61.50 5.00 27.00 88.00 463.00 733.50 977.00 6017.00
1963 1263.50 657.50 643.00 550.34 a 186.50 138.50 13.43 a 16.00 70.00 367.50 759.00 1204.50 5869.78
1964 1280.00 1184.50 835.00 0.00 z 346.00 138.50 2.00 76.00 235.00 500.00 842.50 1017.00 6456.50
1965 1099.47 a 823.00 858.50 387.50 289.00 0.00 z 16.00 51.50 271.00 399.50 676.50 1117.00 5988.97
1966 972.00 852.00 703.50 472.00 196.50 125.00 14.47 a 29.97 a 54.00 549.50 709.50 1028.50 5706.93
1967 940.00 762.50 701.00 602.00 261.50 70.50 0.00 1.00 49.00 538.00 728.00 1131.00 5784.50
1968 1124.50 744.00 620.50 552.50 257.50 64.50 0.00 z 79.50 179.50 548.00 762.00 970.50 5903.00
1969 1062.50 873.00 792.00 411.00 132.50 73.00 4.00 21.00 119.50 606.00 803.50 966.50 5864.50
1970 900.00 733.00 725.00 612.50 252.00 68.00 5.50 1.50 276.50 582.50 732.00 1065.00 5953.50
1971 1024.00 789.00 805.00 460.50 164.50 110.50 7.50 6.00 246.00 532.00 819.00 1102.00 6066.00
1972 1164.50 983.50 648.50 494.50 187.50 57.50 21.00 3.00 243.00 392.00 750.50 1393.00 6338.50
1973 1138.00 777.50 661.00 474.50 209.00 101.00 10.00 12.50 148.00 468.50 768.50 911.00 5679.50
1974 1142.50 807.50 712.50 504.50 316.50 65.00 30.50 19.50 100.50 473.50 751.50 1064.50 5988.50
1975 1252.50 844.00 773.50 640.50 296.50 96.00 3.50 47.00 126.50 472.00 855.50 1106.00 6513.50
1976 1189.00 1005.50 858.50 512.50 167.50 142.00 6.00 57.00 138.00 518.00 815.00 1211.58 a 6620.58
1977 1465.50 982.00 772.50 338.50 360.00 6.50 16.50 39.00 183.50 0.00 z 842.59 a 889.50 5896.09
1978 956.50 784.00 566.00 481.00 313.50 97.00 8.00 44.00 187.00 447.50 944.00 1212.00 6040.50
1979 1610.00 951.00 665.50 490.00 196.50 74.50 17.50 7.50 66.00 386.00 956.00 1040.00 6460.50
1980 1117.50 794.50 736.50 365.50 265.00 154.50 1.50 44.50 176.00 479.00 822.50 1048.00 6005.00
1981 992.50 823.50 689.00 443.00 262.50 105.50 25.00 4.00 139.00 560.50 704.50 1008.00 5757.00
1982 1333.50 1006.00 728.00 582.50 315.50 106.50 37.50 8.00 203.50 497.00 931.50 1134.00 6883.50
1983 1099.00 721.50 636.00 549.50 286.50 79.50 59.00 4.50 192.50 449.50 679.00 1269.00 6025.50
1984 1373.00 0.00 z 710.00 533.50 329.00 156.50 0.00 z 2.00 233.00 591.50 773.00 0.00 z 4701.50
1985 1486.00 1124.50 859.50 362.50 199.00 51.50 0.00 34.50 312.00 605.00 1122.50 1672.50 7829.50
1986 1318.00 752.50 531.50 498.50 285.00 17.50 40.00 0.00 271.50 465.00 765.50 1188.00 6133.00
1987 1277.50 795.00 648.50 304.00 124.50 63.50 33.00 27.50 118.00 416.50 764.50 1014.00 5586.50
1988 1297.50 875.50 670.00 368.50 247.50 60.50 9.00 1.50 186.50 219.50 739.50 1222.00 5897.50
1989 1437.50 1371.50 736.00 364.50 254.00 28.00 0.00 32.50 130.00 481.50 833.50 1119.00 6788.00
1990 983.50 889.00 631.50 287.50 263.00 98.00 21.00 17.00 21.50 511.50 798.00 1462.00 5983.50
1991 1309.50 764.00 698.50 488.00 315.00 117.50 0.00 0.00 106.50 448.50 864.00 1098.00 6209.50
1992 1077.00 746.50 546.00 341.50 110.00 46.00 22.00 46.00 183.50 418.50 924.50 1221.00 5682.50
1993 1323.00 1116.50 821.00 522.50 159.00 142.50 44.50 69.50 138.00 405.50 1020.00 965.00 6727.00
1994 1009.00 901.00 577.50 360.00 178.00 75.50 6.00 1.00 31.00 472.00 998.50 1181.50 5791.00
1995 975.00 672.00 659.50 479.00 228.00 100.50 13.50 44.50 83.00 525.00 690.50 1015.50 5486.00
1996 1009.50 861.00 612.00 419.50 273.00 56.50 2.00 19.50 189.50 439.00 0.00 z 947.50 4829.00
1997 1025.00 794.00 609.50 476.50 148.50 38.50 20.50 0.00 75.50 469.00 735.00 1076.00 5468.00
1998 922.00 726.00 666.50 479.00 245.00 75.50 0.00 z 0.00 49.00 440.00 0.00 z 1094.50 4697.50
1999 927.00 837.00 674.00 507.50 289.50 88.50 9.00 7.50 130.00 417.50 664.50 1051.00 5603.00
2000 988.50 714.00 671.00 317.50 149.00 58.50 5.50 1.50 153.00 436.50 948.00 1059.50 5502.50
2001 1169.50 923.50 588.50 482.00 156.00 64.50 7.50 2.00 60.00 457.50 678.50 1044.50 5634.00
2002 1024.50 908.50 753.50 412.50 244.50 70.00 0.00 3.00 83.00 481.00 806.50 886.00 5673.00
2003 905.50 768.00 547.00 431.50 244.00 21.50 0.00 0.00 106.00 301.50 880.00 902.50 5107.50
2004 1219.50 905.50 530.00 362.50 216.50 56.00 0.50 15.00 123.50 385.00 813.50 974.50 5602.00
2005 1048.00 863.00 620.00 467.00 217.50 121.00 3.00 3.00 163.50 407.50 857.00 1223.00 5993.50
2006 0.00 z 874.50 694.00 406.00 191.50 13.00 0.00 9.50 136.50 455.50 718.50 1084.00 4583.00
2007 1142.00 759.00 549.50 434.00 143.00 50.50 0.00 5.00 128.00 475.50 782.50 1050.00 5519.00
2008 1191.50 848.50 750.00 576.00 187.00 83.00 0.50 10.00 106.00 445.50 718.50 1091.00 6007.50
2009 1074.50 819.00 752.50 458.00 210.50 33.50 0.50 18.00 55.50 572.50 775.00 1216.50 5986.00
2010 937.00 751.50 664.50 505.00 350.50 71.50 10.50 36.00 74.00 310.50 805.00 1115.00 5631.00
2011 1175.42 a 861.50 701.00 590.50 323.50 109.50 2.50 0.00 32.50 398.00 832.50 1121.00 6147.92
2012 995.00 821.50 635.00 379.50 244.50 65.00 o 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3075.50
Period of Record Statistics
MEAN 1146.55 857.07 685.72 434.58 223.14 75.56 8.59 17.36 138.27 443.94 801.84 1079.23 5906.90
S.D. 189.00 139.82 84.66 84.74 71.27 41.13 12.11 19.73 64.29 73.77 96.85 142.42 457.69
SKEW 0.64 1.01 0.09 0.01 0.06 0.45 2.07 1.36 0.48 -0.07 0.47 1.14 0.79
MAX 1709.00 1371.50 880.00 640.50 367.00 167.50 59.00 79.50 312.00 606.00 1122.50 1672.50 7829.50
MIN 730.50 637.00 481.50 227.50 80.50 6.50 0.00 0.00 21.50 219.50 589.00 791.50 4521.60
NO YRS 89 88 90 89 89 88 86 87 89 88 86 89 76