TETONIA EXPERIMENT STN, IDAHO

Monthly Total Heating Degree Days

(109065)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1952 0.00 z 0.00 z 0.00 z 0.00 z 225.50 q 297.00 168.00 107.50 276.50 606.50 1324.50 1394.00 4174.00
1953 1177.00 1201.00 1145.00 914.50 534.00 h 317.00 45.50 117.50 289.00 681.00 988.50 1464.00 8340.00
1954 1383.50 1041.50 1288.00 800.00 517.50 382.00 57.50 171.00 333.50 763.00 894.00 1461.50 9093.00
1955 1678.50 1420.00 1379.50 910.50 578.00 373.50 145.00 65.50 377.00 672.50 1158.00 1296.00 10054.00
1956 1305.50 1506.50 1264.00 788.50 431.50 270.00 94.00 179.50 83.00 w 790.50 c 1309.00 1440.00 9379.00
1957 1695.00 262.50 t 1130.00 857.00 535.50 318.50 76.50 103.50 358.50 733.00 1241.50 1341.50 8390.50
1958 1528.00 1022.50 1201.00 906.50 352.50 260.00 163.00 78.00 385.50 637.50 1095.00 1227.00 8856.50
1959 1417.50 1198.50 1205.00 776.00 654.00 228.50 120.50 175.50 484.00 757.50 1171.00 1426.00 9614.00
1960 1520.00 1507.00 1130.50 774.00 600.00 272.50 54.50 191.50 314.50 720.50 1093.50 1468.00 9646.50
1961 1491.50 1126.50 1085.00 839.50 553.50 170.50 58.00 45.50 558.50 789.50 1153.00 1561.00 9432.00
1962 1731.50 1220.50 1249.00 729.50 539.00 294.50 144.50 168.50 356.00 594.50 973.50 1263.00 9264.00
1963 1717.50 897.00 1083.50 859.50 482.50 394.50 110.00 93.00 235.00 526.00 1043.00 1497.00 8938.50
1964 1641.50 1563.50 1423.50 863.50 553.50 365.00 50.50 234.00 449.00 661.00 1138.50 1404.00 10347.50
1965 1384.48 c 1231.50 1347.00 730.50 631.00 346.50 122.00 202.00 606.00 645.50 923.00 1386.00 9555.48
1966 1433.50 1333.50 1202.50 858.50 462.50 312.00 30.00 133.00 252.50 777.00 999.00 1474.50 9268.50
1967 1279.00 1159.00 1106.00 858.00 565.00 350.00 57.50 61.50 278.00 689.00 1016.00 1727.70 c 9146.70
1968 1545.35 a 1152.48 b 1067.00 883.00 628.50 331.00 65.50 255.50 431.50 748.00 1215.50 1427.00 9750.33
1969 1331.50 1280.00 1403.00 742.00 409.00 373.00 88.00 78.50 278.00 903.50 1114.50 1394.00 9395.00
1970 1405.00 1087.00 1245.00 1092.00 591.50 282.00 112.50 72.00 547.50 936.00 1048.50 1456.00 9875.00
1971 1428.00 656.00 m 917.00 f 869.50 543.50 332.50 129.50 50.50 518.00 814.50 1135.00 1514.00 7335.00
1972 0.00 z 772.00 h 920.00 820.00 532.00 246.50 172.00 110.50 485.50 759.50 1108.00 1650.00 6804.00
1973 1594.00 1291.50 1237.50 1013.00 526.50 278.50 108.00 156.50 422.50 671.50 1049.50 1339.50 9688.50
1974 0.00 z 1253.50 1069.50 767.00 558.00 173.50 59.00 152.50 362.00 657.50 1027.00 1499.00 7578.50
1975 1526.50 1331.00 1174.50 1037.50 725.00 361.50 65.50 252.00 421.50 733.00 1161.50 1217.00 10006.50
1976 1437.50 1264.00 1372.00 895.50 495.50 320.50 56.00 184.00 334.50 778.50 1009.29 b 1439.00 9586.29
1977 1635.50 1225.50 1253.50 705.00 601.00 140.00 100.75 a 155.00 315.00 a 0.00 z 1104.83 a 1244.00 8480.08
1978 1302.50 1182.00 1011.00 760.50 597.00 276.00 119.50 214.00 410.00 677.50 1165.00 1772.50 9487.50
1979 1817.50 1156.00 1173.00 871.50 497.00 286.00 53.50 127.00 257.00 650.50 1361.00 1285.35 d 9535.35
1980 1428.14 b 1063.68 a 1168.00 712.00 551.50 315.00 122.50 279.00 0.00 z 0.00 z 1220.00 928.00 f 6859.82
1981 1238.40 b 1144.50 1011.63 a 0.00 z 553.50 278.00 0.00 z 46.00 h 248.00 f 641.00 f 970.50 1327.50 6524.03
1982 1562.00 1387.50 1127.50 1000.00 642.50 363.50 176.50 113.00 453.75 b 858.00 1235.50 1219.50 f 8919.75
1983 0.00 z 1135.50 810.00 h 562.00 n 477.00 j 356.50 141.50 104.50 415.50 716.50 1114.50 1719.00 5703.50
1984 1671.42 a 1450.52 a 863.50 i 693.50 i 443.00 h 267.00 i 47.50 m 77.50 j 284.00 k 649.00 j 765.00 j 965.00 m 3121.93
1985 1157.50 j 926.50 l 610.50 q 753.46 d 220.50 n 186.00 m 35.00 t 144.50 k 357.50 k 327.00 r 455.50 r 449.00 v 753.46
1986 700.50 o 617.50 l 548.50 m 770.50 377.50 j 89.00 j 197.37 a 52.50 m 355.50 j 518.50 j 645.50 m 830.00 n 967.87
1987 886.50 n 812.50 i 779.50 i 627.41 a 271.00 l 191.50 i 86.50 m 88.00 q 191.00 k 464.00 j 625.00 l 873.50 k 627.41
1988 1661.00 892.00 j 1214.00 697.00 470.68 a 166.50 48.50 p 61.50 m 329.00 h 499.21 b 1152.00 1004.50 k 5860.39
1989 1616.00 1416.50 1091.72 a 712.00 395.50 i 286.55 a 38.00 102.00 j 236.50 k 699.00 1089.31 a 847.00 n 6949.08
1990 845.50 l 829.50 k 1014.50 439.50 i 446.00 j 208.00 k 58.00 k 78.00 k 147.50 l 478.50 j 637.50 l 571.00 s 1014.50
1991 1010.50 l 718.00 i 657.00 m 853.39 b 389.00 k 186.00 k 68.00 j 54.00 l 258.00 j 534.50 i 663.50 m 847.00 m 853.39
1992 1015.00 j 734.50 j 621.00 j 634.66 a 171.50 o 188.50 i 162.50 i 113.00 j 245.00 j 466.50 h 784.50 l 802.00 o 634.66
1993 828.00 o 753.00 m 1161.98 a 855.00 284.50 k 400.50 253.50 j 169.50 j 303.50 i 479.00 k 708.00 k 729.50 o 2417.48
1994 788.50 l 767.50 l 1020.50 492.00 j 273.00 j 254.00 95.00 k 58.00 j 200.00 j 516.50 j 731.50 n 791.50 m 1274.50
1995 861.50 k 713.50 i 1099.98 a 534.00 j 433.00 i 356.50 88.50 k 87.00 i 235.50 k 578.50 i 540.50 m 725.50 m 1456.48
1996 1468.00 1243.00 1118.50 802.00 592.00 244.00 102.00 178.50 447.00 752.50 1027.50 1412.50 9387.50
1997 1474.50 1326.50 1100.50 a 880.00 519.00 248.50 185.50 130.00 321.72 a 795.50 1073.50 1563.43 a 9618.66
1998 1343.00 1193.00 1223.00 853.50 541.50 473.50 44.00 92.50 262.00 724.50 991.50 1463.00 9205.00
1999 1363.48 a 1158.37 a 1093.78 a 867.86 b 645.00 343.93 b 140.07 d 109.50 482.00 656.68 a 822.50 1430.65 a 9113.83
2000 1410.50 b 1128.77 c 1127.76 b 698.00 522.72 b 300.58 d 78.07 d 72.69 b 446.11 c 715.77 c 1410.54 b 1533.95 c 9445.45
2001 1624.92 a 1305.50 d 1073.63 a 788.00 447.43 a 306.35 d 79.71 c 53.45 b 148.89 c 689.46 d 953.89 c 1567.10 b 9038.34
2002 1505.00 1434.00 1280.50 767.00 549.50 261.50 55.50 185.00 358.50 865.50 1238.50 1317.00 9817.50
2003 1278.50 1263.50 1010.00 765.50 514.00 284.00 31.50 77.50 394.00 579.50 1315.50 1313.00 8826.50
2004 1524.96 e 1353.94 e 979.50 667.50 564.00 258.50 f 97.00 182.50 393.21 b 731.48 e 1144.00 1360.50 8998.59
2005 979.50 h 1323.28 c 1153.56 e 821.25 b 577.78 b 389.00 25.00 n 98.00 g 308.00 i 580.50 f 1098.00 e 1227.50 f 5362.86
2006 1378.50 1405.92 b 1207.81 e 783.46 d 453.38 c 161.00 f 23.50 p 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5229.07
Period of Record Statistics
MEAN 1486.72 1253.30 1161.82 817.33 544.02 303.94 98.00 137.83 380.50 716.45 1110.86 1437.85 9464.07
S.D. 150.79 144.08 115.61 98.73 71.69 66.94 46.27 61.31 99.69 92.25 126.38 133.29 370.63
SKEW 0.11 0.03 0.36 0.51 -0.18 -0.27 0.42 0.43 0.09 0.05 0.22 0.61 0.26
MAX 1817.50 1563.50 1423.50 1092.00 725.00 473.50 197.37 279.00 606.00 936.00 1410.54 1772.50 10347.50
MIN 1177.00 897.00 920.00 627.41 352.50 140.00 30.00 45.50 148.89 499.21 822.50 1217.00 8826.50
NO YRS 41 41 46 48 41 46 42 40 38 40 44 39 28