AMERICAN FALLS 1 SW, IDAHO

Monthly Total Heating Degree Days

(100227)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 14.50 177.00 506.50 918.00 1329.50 2945.50
1949 1876.00 1152.50 858.70 a 450.00 264.00 116.50 3.50 4.00 131.50 672.50 711.00 1133.50 7373.70
1950 1288.00 954.00 910.50 647.00 465.00 179.00 40.50 41.00 241.50 419.50 781.00 1015.00 6982.00
1951 1253.50 920.00 982.50 530.00 301.00 223.00 17.50 32.00 142.50 581.00 912.50 1291.00 7186.50
1952 1361.50 1251.00 1148.50 542.50 280.50 92.00 32.00 4.00 122.50 422.00 1105.50 1142.00 7504.00
1953 887.50 876.00 806.00 655.00 512.00 190.50 2.00 7.00 102.50 463.50 704.00 1144.50 6350.50
1954 1088.00 838.50 955.50 0.00 z 281.50 212.50 17.50 44.50 184.00 562.00 733.50 1298.50 6216.00
1955 1457.50 1177.50 1022.00 664.29 b 379.00 143.00 36.50 0.00 222.50 469.00 952.50 994.00 7517.79
1956 1055.00 1272.00 859.00 552.00 254.50 72.00 e 11.00 38.00 160.00 525.50 1012.00 1125.00 6936.00
1957 1461.00 938.00 801.00 594.50 293.50 110.00 3.00 13.00 166.00 517.00 997.50 1031.50 6926.00
1958 1282.00 789.00 884.50 619.00 170.50 66.00 19.00 6.50 166.50 456.00 851.00 911.50 6221.50
1959 1070.50 921.00 817.50 497.50 470.00 65.00 19.00 26.00 247.00 495.00 839.50 1184.00 6652.00
1960 1413.00 1197.50 853.00 517.00 353.50 52.50 0.50 69.00 137.50 529.00 801.00 1176.00 7099.50
1961 1204.00 802.00 793.50 576.00 293.00 30.00 0.00 0.00 299.00 571.00 895.50 1159.50 6623.50
1962 1500.00 1009.50 1002.50 460.00 368.00 119.00 8.00 51.00 111.50 436.50 766.00 1037.00 6869.00
1963 1391.00 731.00 804.50 661.50 285.50 175.50 8.50 0.50 75.00 309.50 806.50 1328.50 6577.50
1964 1359.00 1323.00 1148.00 648.50 348.50 186.00 0.50 52.50 194.50 462.50 858.50 1049.00 7630.50
1965 1077.50 927.00 931.00 510.00 408.00 133.00 15.00 52.50 319.50 409.00 678.50 1118.50 6579.50
1966 1167.00 1051.00 832.50 584.50 225.50 129.00 2.50 18.00 92.00 550.50 765.50 1185.50 6603.50
1967 1021.00 816.00 780.00 679.00 375.00 151.50 0.00 2.00 85.00 445.50 795.50 1290.00 6440.50
1968 1262.50 919.00 741.00 649.00 360.00 115.00 12.50 127.50 235.00 538.00 893.00 1157.00 7009.50
1969 1081.00 1066.50 1105.50 524.00 232.50 148.50 13.50 10.00 95.00 656.50 839.50 1089.50 6862.00
1970 1071.00 803.50 875.00 742.00 342.50 156.00 11.50 3.00 307.50 661.00 791.00 1140.00 6904.00
1971 1096.00 944.00 907.00 606.50 320.50 151.50 16.50 5.50 284.00 625.00 889.00 1250.00 7095.50
1972 1200.50 990.50 683.50 591.00 323.00 81.00 22.00 13.00 275.50 528.50 850.50 1367.00 6926.00
1973 1390.00 1150.50 923.50 636.50 304.50 0.00 z 13.50 10.50 207.50 0.00 z 851.50 1034.50 6522.50
1974 1307.50 953.00 815.50 552.50 345.00 81.00 10.00 34.50 178.00 550.00 818.00 1198.50 6843.50
1975 1268.50 1020.00 890.50 748.50 450.50 104.48 a 6.50 46.00 187.50 513.50 932.50 1016.50 7184.98
1976 1217.00 1087.00 1030.50 623.00 214.50 140.00 1.00 32.00 169.50 604.00 870.50 1174.50 7163.50
1977 1446.50 1079.00 959.50 484.50 444.00 6.50 7.50 39.50 205.00 471.50 851.00 989.50 6984.00
1978 1070.07 d 435.50 n 481.00 h 545.00 368.00 77.00 6.00 29.50 183.00 394.50 924.00 1261.00 4858.07
1979 1572.50 967.50 813.50 512.00 261.50 82.50 0.00 5.00 43.00 367.50 967.50 1023.52 a 6616.02
1980 1188.50 847.00 802.00 435.00 345.00 147.50 1.00 31.00 102.50 493.50 830.00 983.00 6206.00
1981 1084.00 900.50 722.50 462.00 299.00 66.50 9.50 4.50 93.50 495.00 751.50 997.50 5886.00
1982 1287.00 1099.00 779.50 604.50 329.00 115.00 15.00 0.00 160.00 526.00 911.50 1178.00 7004.50
1983 1019.00 882.00 720.00 622.50 342.00 98.00 49.00 1.00 111.50 409.00 779.00 1318.50 6351.50
1984 1424.50 1222.00 934.50 617.00 275.00 168.00 4.00 7.00 186.50 626.50 856.50 1339.41 b 7660.91
1985 1574.50 1278.00 1196.17 b 453.00 213.00 79.00 0.00 20.00 273.50 536.50 1099.50 1610.00 8333.17
1986 1263.50 802.50 590.00 543.00 333.50 21.00 18.00 3.00 291.00 474.00 821.00 1202.00 6362.50
1987 1348.50 905.00 772.50 363.00 224.00 44.00 32.00 18.00 106.00 401.50 804.50 1157.50 6176.50
1988 1293.00 919.50 821.00 447.00 290.50 29.00 1.00 2.00 186.00 234.00 858.50 1288.50 6370.00
1989 1363.00 1214.50 792.50 411.00 290.00 77.00 2.00 34.50 111.00 500.50 802.00 1156.00 6754.00
1990 1062.00 987.50 728.00 377.50 354.50 110.00 0.00 12.00 25.50 473.00 809.00 1500.50 6439.50
1991 1335.50 777.00 781.50 585.50 386.00 95.00 5.00 0.00 131.00 457.50 921.00 1148.00 6623.00
1992 1194.00 786.00 612.00 370.50 109.00 78.00 13.50 44.00 133.50 377.00 1042.00 1293.00 6052.50
1993 1435.00 1231.00 884.00 589.50 195.50 206.50 100.50 41.50 162.50 485.00 1039.50 1158.50 7529.00
1994 1014.00 994.00 673.00 460.00 187.50 81.00 11.50 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 3421.00
1995 0.00 z 0.00 z 798.00 589.50 396.50 204.50 23.00 25.50 197.50 556.50 690.00 1081.00 4562.00
1996 1126.00 1010.50 760.00 532.50 392.00 72.00 5.00 25.50 246.50 550.50 817.50 1110.00 6648.00
1997 1192.00 971.00 777.50 667.00 267.50 119.50 59.50 22.00 136.00 526.50 864.00 1258.50 6861.00
1998 1005.00 892.00 821.50 579.00 346.00 226.00 0.00 5.50 118.00 550.50 791.00 1251.00 6585.50
1999 1082.50 952.50 782.00 643.50 415.00 166.00 40.00 23.50 218.50 461.00 670.00 1186.00 6640.50
2000 1132.00 850.50 803.00 424.00 293.00 101.00 7.00 7.00 214.50 516.50 1133.00 1255.50 a 6737.00
2001 1439.50 1171.50 839.50 563.50 222.50 115.50 12.50 0.00 96.50 471.00 780.50 1367.50 7080.00
2002 1326.00 1307.50 1014.50 513.00 331.00 128.00 2.00 41.00 160.00 631.50 935.50 1042.00 7432.00
2003 954.00 969.50 728.00 569.50 334.50 116.50 0.50 3.50 161.50 385.50 969.50 1051.00 6243.50
2004 1425.00 1204.00 731.00 473.00 358.00 119.00 8.50 45.50 192.00 467.00 924.00 1073.50 7020.50
2005 1286.50 1119.00 794.00 527.00 343.00 191.50 14.50 15.50 188.00 479.00 896.00 1324.00 7178.00
2006 1190.00 1115.00 903.00 511.00 288.50 9.00 x 0.00 x 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4007.50
Period of Record Statistics
MEAN 1249.83 1005.99 850.82 553.27 318.21 117.22 13.89 22.19 171.07 496.38 862.45 1175.02 6843.03
S.D. 183.62 156.57 126.03 89.28 78.33 53.05 17.53 22.79 67.36 85.16 104.62 134.93 469.36
SKEW 0.60 0.33 0.71 -0.13 -0.03 0.18 2.70 1.93 0.27 -0.30 0.54 0.64 0.53
MAX 1876.00 1323.00 1196.17 748.50 512.00 226.00 100.50 127.50 319.50 672.50 1133.00 1610.00 8333.17
MIN 887.50 731.00 590.00 363.00 109.00 6.50 0.00 0.00 25.50 234.00 670.00 911.50 5886.00
NO YRS 57 56 57 57 58 56 57 57 57 56 57 57 52