ALTON, UTAH

Monthly Total Heating Degree Days

(420086)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1915 0.00 z 0.00 z 0.00 z 0.00 z 564.72 a 345.58 d 117.00 100.75 a 336.00 507.00 902.07 a 1144.33 b 4017.44
1916 1304.30 d 921.50 857.00 624.50 511.00 169.00 76.50 210.50 329.00 711.50 930.50 1275.50 7920.80
1917 1381.00 1057.00 1161.50 789.00 657.00 265.50 23.00 101.50 299.50 464.50 778.39 b 923.50 7901.39
1918 1181.00 941.63 a 840.50 709.00 553.00 63.00 157.50 225.04 d 227.50 512.00 988.50 1189.00 7587.67
1919 1155.00 1107.50 1031.00 597.50 135.00 p 143.28 a 49.50 48.00 237.93 a 798.25 a 829.04 d 1118.07 a 7115.06
1920 1068.00 976.00 1053.00 864.11 b 483.00 265.50 81.50 105.92 a 332.00 664.50 883.45 a 1213.65 a 7990.62
1921 1143.50 948.50 823.57 a 749.00 539.00 196.00 56.00 111.00 298.00 441.50 759.44 c 957.50 7023.01
1922 1407.92 a 1058.81 a 1061.23 a 840.00 453.00 108.21 b 33.00 73.50 168.62 a 586.00 912.69 d 769.00 h 6702.99
1923 1036.00 1078.50 1013.50 706.50 405.00 269.50 19.50 m 114.00 303.00 660.82 a 807.00 1102.50 7496.32
1924 1262.73 a 826.50 1114.00 709.50 295.53 a 116.50 63.00 63.00 220.00 604.00 779.50 1229.50 7283.77
1925 1234.50 889.50 870.00 673.50 342.50 339.00 76.50 151.50 360.00 742.50 873.33 c 930.50 7483.33
1926 1085.52 a 494.50 m 705.25 a 565.86 a 391.63 a 108.10 a 28.33 b 60.50 263.28 a 456.45 b 766.00 1200.00 5630.92
1927 1062.00 951.00 1014.00 668.50 438.13 a 178.97 a 23.77 a 122.97 a 324.00 508.00 799.14 a 1287.50 7377.97
1928 1055.03 a 1005.00 840.50 714.50 383.00 213.00 51.50 73.22 b 198.00 e 501.34 b 912.86 b 1197.00 7144.96
1929 1232.50 1184.50 992.50 788.28 a 434.00 a 231.50 23.50 55.28 a 313.00 527.00 810.50 946.00 7538.56
1930 1341.50 875.50 930.00 514.00 725.40 a 195.00 58.38 a 118.00 314.00 602.50 901.00 1165.00 7740.28
1931 1138.00 944.50 904.00 641.00 415.00 192.00 18.00 28.42 a 245.00 530.00 1032.50 1293.00 7381.42
1932 1477.50 1101.48 a 1043.00 703.00 497.00 218.50 49.50 76.00 204.50 598.50 741.00 1375.00 8084.98
1933 1368.65 a 1307.04 c 943.50 827.68 b 643.00 175.00 22.50 91.89 c 181.00 431.00 750.52 a 970.30 a 7712.08
1934 1087.50 811.00 608.50 533.50 284.50 265.86 a 25.50 28.50 209.50 422.50 809.50 1082.50 6168.86
1935 1110.50 911.12 c 1074.50 635.00 539.50 127.00 76.00 43.00 213.50 580.73 a 907.00 1094.50 7312.35
1936 1145.50 1093.00 938.50 587.22 c 346.17 a 148.97 a 52.59 c 62.00 a 271.03 a 567.50 816.50 1108.77 a 7137.74
1937 1668.00 1122.50 1011.00 766.00 316.50 211.50 57.57 c 29.50 177.50 522.50 782.00 1073.93 c 7738.50
1938 1101.50 1084.50 1070.02 a 632.50 499.50 197.00 98.50 81.50 213.50 595.50 1018.50 1068.00 7660.52
1939 1192.50 1315.00 956.00 568.50 434.00 216.21 a 60.00 37.09 c 278.79 a 596.50 712.00 886.60 a 7253.19
1940 1155.00 1069.00 826.50 632.07 a 344.00 107.00 52.00 46.00 279.50 539.92 a 950.69 a 1090.50 7092.17
1941 1174.38 a 897.50 950.50 841.50 433.00 298.00 39.00 108.50 359.50 684.00 786.00 1124.50 7696.38
1942 1180.00 1180.50 1055.50 671.00 528.00 227.50 13.50 65.21 b 230.00 538.50 786.50 976.50 7452.71
1943 1101.50 966.00 926.00 580.00 437.00 324.00 66.50 74.50 178.50 563.50 809.50 779.00 j 6027.00
1944 1263.00 1148.50 1096.50 790.00 485.00 315.50 55.00 35.00 177.50 489.50 965.50 1075.50 7896.50
1945 1124.00 967.50 1135.63 a 808.00 460.00 292.00 26.50 68.50 241.50 530.00 925.00 1223.00 7801.63
1946 1284.00 1067.00 934.50 548.00 490.50 140.50 31.00 66.50 184.00 706.00 975.00 1018.00 7445.00
1947 1241.00 806.00 857.00 657.50 324.50 267.50 28.00 67.50 115.50 513.00 1020.00 1221.00 7118.50
1948 1089.50 1142.00 1180.50 683.50 427.50 217.50 37.00 60.00 181.00 551.50 976.00 1233.50 7779.50
1949 1495.50 1250.00 1065.00 582.41 a 489.00 234.50 57.50 96.00 176.90 a 651.00 646.00 1253.50 7997.31
1950 1394.50 970.67 a 943.00 616.00 470.50 208.50 33.50 70.00 274.00 357.50 677.00 824.50 6839.67
1951 1151.50 948.00 959.00 642.50 450.00 219.50 3.50 100.75 a 185.00 589.00 922.50 1233.00 7404.25
1952 1273.00 1119.50 1183.00 667.00 401.50 238.50 43.50 15.50 150.00 318.00 941.00 1123.50 7474.00
1953 939.00 923.00 882.00 689.00 655.00 167.50 8.50 81.50 140.00 555.00 773.00 1105.50 6919.00
1954 1071.50 784.00 1025.00 501.00 340.00 235.50 10.50 89.50 197.00 431.00 677.00 1104.63 a 6466.63
1955 1243.50 1135.04 a 958.50 740.00 0.00 z 222.50 46.00 20.50 186.50 392.00 844.50 1001.00 6790.04
1956 997.68 a 1140.00 838.00 659.00 392.67 a 90.00 28.00 66.50 96.50 553.00 855.52 a 1040.00 6756.87
1957 1218.09 b 818.50 898.50 738.50 575.00 140.50 28.50 56.00 180.00 585.00 981.50 983.00 7203.09
1958 1058.50 862.00 1061.00 749.00 301.50 138.00 43.50 4.00 198.50 453.50 823.50 843.00 6536.00
1959 1073.00 1025.00 885.05 a 567.50 484.50 98.79 a 7.50 51.50 299.00 512.00 784.00 1022.00 6809.84
1960 1305.00 1159.00 833.50 606.50 408.50 69.50 10.00 44.50 121.00 577.00 830.50 1080.50 7045.50
1961 1051.00 892.00 951.00 665.50 449.00 103.00 6.50 42.00 358.00 592.50 949.50 1213.00 7273.00
1962 1180.50 995.00 1154.50 523.00 515.00 207.00 50.00 39.00 151.50 483.50 720.50 998.00 7017.50
1963 1246.50 781.50 973.50 805.00 369.00 254.00 10.50 40.82 a 199.00 437.00 823.00 1068.00 7007.82
1964 1272.50 1133.50 1108.00 754.50 517.50 236.50 7.00 49.00 263.00 370.00 980.50 1150.50 7842.50
1965 1061.50 949.50 1023.50 751.00 566.00 330.00 42.50 72.00 387.50 396.50 783.50 1097.50 7461.00
1966 1231.00 1167.00 844.00 591.00 353.50 169.00 24.00 45.50 190.00 542.50 766.50 1104.00 7028.00
1967 1103.00 945.00 854.50 873.50 487.50 304.50 6.50 11.50 235.50 458.50 751.00 1299.00 7330.00
1968 1178.50 863.50 876.00 758.00 471.00 166.00 41.85 a 157.00 280.00 519.50 854.00 1224.00 7389.35
1969 1092.50 1087.00 1139.50 669.00 341.00 231.50 38.23 a 13.00 167.50 690.50 846.00 1019.00 7334.73
1970 1111.00 813.00 970.00 816.00 400.50 189.00 25.50 19.00 326.00 621.00 814.14 a 1215.50 7320.64
1971 1151.00 994.00 914.00 668.50 567.00 185.00 22.00 25.00 289.00 676.50 933.00 1297.50 7722.50
1972 1142.50 877.50 673.50 624.00 388.50 134.48 a 10.00 73.50 282.00 632.00 1015.50 1283.00 7136.48
1973 1335.50 1022.50 1087.50 811.50 383.50 203.50 30.50 61.00 253.00 524.00 902.50 1064.00 7679.00
1974 1286.50 1040.50 789.50 711.00 338.93 a 69.00 i 23.00 28.50 198.50 489.80 a 843.50 1188.00 6937.73
1975 1140.50 1062.50 1046.50 897.00 544.00 235.50 29.50 105.00 205.00 585.00 898.00 1019.00 7767.50
1976 1061.50 918.50 1024.50 733.50 347.50 210.50 22.50 99.00 245.69 a 547.67 a 756.00 1014.00 6980.86
1977 1167.00 827.00 1023.50 565.00 570.50 88.00 19.50 34.00 227.00 449.00 787.50 964.50 6722.50
1978 1133.50 988.50 828.00 679.50 455.00 142.50 35.50 70.00 244.00 362.50 902.00 1278.00 7119.00
1979 1369.00 1086.00 988.50 698.50 384.50 170.00 40.82 a 110.50 107.00 437.50 957.50 990.50 7340.32
1980 1079.00 943.50 1065.50 677.50 522.00 188.50 31.00 104.00 208.50 516.50 774.50 832.00 6942.50
1981 952.98 b 874.00 917.00 532.50 437.62 a 96.50 3.00 54.00 197.00 625.50 761.50 963.00 6414.60
1982 1219.50 976.00 944.00 695.50 431.00 214.00 71.00 54.00 256.50 650.50 940.50 1196.50 7649.00
1983 1108.00 959.00 962.50 861.00 464.00 185.50 36.00 60.00 157.50 487.50 870.50 1109.00 7260.50
1984 1133.50 979.00 0.00 z 727.00 246.50 201.50 28.50 29.50 162.00 680.50 898.50 1203.50 6290.00
1985 1227.00 1094.00 969.00 519.50 401.50 109.50 25.50 30.50 349.00 528.00 968.50 1074.50 7296.50
1986 901.50 875.00 717.50 620.50 384.50 85.50 66.00 12.00 366.00 614.50 783.50 1056.50 6483.00
1987 1187.00 950.50 978.00 516.00 451.00 101.50 66.50 80.00 208.00 419.00 877.50 1200.50 7035.50
1988 1206.50 894.00 887.50 617.50 455.00 114.00 5.00 53.50 259.00 343.50 860.50 1164.50 6860.50
1989 1289.50 1080.00 752.50 476.50 422.00 157.50 7.50 113.50 242.50 591.00 804.50 1020.00 6957.00
1990 1169.00 1068.50 857.00 599.00 492.00 154.00 21.00 107.50 174.00 480.50 844.50 1375.00 7342.00
1991 1198.00 789.00 1078.00 720.00 506.50 228.00 18.00 20.00 178.00 451.00 857.50 1100.00 7144.00
1992 1151.00 935.50 850.00 462.00 357.00 201.50 66.00 72.00 278.50 522.00 1044.00 1358.50 7298.00
1993 1300.00 1121.00 999.00 706.50 481.00 314.00 146.50 9.00 w 78.00 v 548.50 930.00 1096.50 7643.00
1994 1024.00 1106.00 767.50 615.00 390.00 75.00 2.50 1.00 161.50 598.50 1071.50 0.00 z 5812.50
1995 1186.00 781.00 865.00 700.00 547.00 263.00 67.50 4.00 168.00 458.50 671.00 1022.50 6733.50
1996 1089.50 859.00 820.00 564.50 336.50 73.50 2.50 11.50 245.50 581.50 803.50 1073.50 6461.00
1997 1156.50 1029.00 773.00 703.00 300.00 164.50 24.50 23.00 171.00 558.00 793.00 1128.00 6823.50
1998 1083.50 1052.50 930.00 763.00 531.00 299.50 15.00 15.00 215.50 613.00 872.00 1071.00 7461.00
1999 969.00 855.50 769.50 791.50 486.18 a 187.00 22.73 a 57.00 213.00 419.00 676.50 1049.87 a 6496.78
2000 1008.50 916.50 872.50 478.00 271.50 72.41 a 18.50 i 24.50 161.00 561.50 1054.50 986.00 6406.91
2001 1182.00 957.19 a 824.00 655.34 a 263.50 95.50 27.50 24.00 101.50 398.00 808.45 a 1227.50 6564.48
2002 1140.50 908.00 889.00 490.00 368.00 49.50 0.00 25.50 198.50 586.00 810.50 1170.00 6635.50
2003 867.50 943.00 870.50 704.00 359.00 103.50 0.00 12.00 121.00 311.00 930.00 1116.50 6338.00
2004 1184.50 1145.00 687.00 590.00 375.00 100.50 17.50 47.00 229.50 597.50 902.50 1047.50 6923.50
2005 1050.00 938.00 908.50 637.50 368.00 217.00 3.00 52.50 224.00 483.50 754.00 1063.50 6699.50
2006 1100.00 875.50 1017.00 608.50 296.00 57.50 11.00 16.00 288.00 573.50 812.50 1101.00 6756.50
2007 1203.00 872.00 721.50 568.00 327.00 82.00 0.00 5.50 194.50 517.00 697.50 1264.00 6452.00
2008 1332.48 a 1069.50 890.50 630.00 482.50 146.50 0.50 6.00 157.00 466.00 0.00 z 1152.50 6333.48
2009 1060.00 996.50 850.00 670.00 264.00 219.00 2.50 39.00 118.50 599.00 758.00 1312.50 6889.00
2010 153.50 z 1047.50 947.00 680.50 523.00 126.00 11.00 39.50 97.50 498.50 943.50 965.00 5879.00
2011 1141.50 1062.50 890.50 639.50 524.00 188.50 17.05 a 2.00 163.50 489.50 884.00 1130.00 7132.55
2012 993.00 1036.50 811.50 556.00 294.00 50.00 14.00 12.92 a 153.00 457.50 733.00 1167.00 6278.42
2013 1239.50 1000.00 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 2239.50
Period of Record Statistics
MEAN 1170.33 993.03 934.40 667.51 436.00 182.42 35.05 59.84 223.68 533.30 851.85 1112.56 7190.21
S.D. 128.81 118.84 121.14 99.56 96.50 73.60 29.52 42.14 68.16 94.68 96.22 120.61 456.57
SKEW 0.73 0.29 -0.13 0.12 0.31 0.17 1.63 1.25 0.35 0.03 0.16 -0.05 -0.15
MAX 1668.00 1315.00 1183.00 897.00 725.40 345.58 157.50 225.04 387.50 798.25 1071.50 1375.00 8084.98
MIN 867.50 781.00 608.50 462.00 246.50 49.50 0.00 1.00 96.50 311.00 646.00 824.50 6168.86
NO YRS 97 97 96 97 96 97 96 97 97 98 97 95 84