TROPIC, UTAH

Monthly Total Heating Degree Days

(428847)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199908
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
1893 911.29 b 988.30 a 934.00 655.00 349.50 82.76 a 16.50 57.00 304.00 569.50 837.50 1024.50 6729.85
1894 1393.50 1125.00 811.50 522.50 208.00 165.00 2.50 19.00 233.00 431.00 0.00 z 0.00 z 4911.00
1895 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
1896 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
1897 0.00 z 549.00 l 680.50 k 593.50 170.00 160.34 a 0.00 z 0.00 z 136.00 l 385.00 g 0.00 z 0.00 z 923.84
1898 1190.83 b 0.00 z 1096.92 e 560.00 465.60 e 117.00 8.00 7.00 213.50 568.00 723.50 f 1176.97 a 5403.81
1899 0.00 z 706.00 f 884.53 a 588.10 a 531.13 a 139.66 a 6.50 174.52 d 83.50 l 616.00 f 842.50 384.50 u 3166.94
1900 1024.00 938.00 757.50 785.00 373.50 78.00 9.41 c 181.50 475.50 685.88 c 892.50 b 207.50 y 6200.79
1901 1281.50 1067.11 a 1013.18 a 794.00 368.00 212.50 23.00 79.00 373.00 439.00 g 898.20 e 0.00 z 6109.49
1902 1115.50 1001.00 0.00 z 261.00 t 492.00 128.28 a 141.50 204.50 320.50 778.50 1113.10 a 1359.19 b 6654.07
1903 1293.00 1427.39 e 450.00 m 609.00 361.50 80.00 49.60 a 8.50 220.00 383.50 0.00 z 1061.50 5493.99
1904 1107.22 a 906.81 c 857.00 598.50 298.08 e 105.00 a 30.00 12.50 154.50 444.33 a 720.00 c 1027.00 6260.93
1905 1148.60 b 953.04 a 753.19 d 563.00 485.50 171.00 25.50 5.88 b 38.00 s 472.00 832.50 1243.50 6653.71
1906 1133.50 595.50 g 820.90 e 598.00 386.47 a 154.00 20.00 34.50 196.03 a 220.50 m 841.50 943.78 d 5128.68
1907 869.00 h 270.00 q 779.17 e 208.50 r 465.00 a 241.00 45.00 55.59 b 186.50 451.16 c 781.11 c 691.00 h 3004.53
1908 568.50 n 749.50 g 769.50 540.50 519.80 c 207.41 a 4.50 j 54.50 83.50 p 286.50 t 160.50 y 0.00 z 2091.72
1909 653.00 l 980.58 d 896.23 c 632.00 409.00 64.00 8.04 d 11.07 c 217.00 402.50 825.50 921.50 k 4445.92
1910 1304.67 b 649.50 i 622.50 288.00 k 261.00 56.00 17.00 9.50 101.50 398.23 e 606.67 c 696.50 h 3377.07
1911 954.00 692.00 h 337.00 m 102.50 x 384.00 109.00 9.82 a 19.00 g 156.00 e 263.00 l 350.50 r 757.00 m 1612.82
1912 757.00 g 846.50 362.00 s 488.00 j 394.50 52.00 k 56.00 f 34.44 d 319.00 495.50 g 364.50 o 776.00 l 1594.44
1913 1337.81 b 1046.08 c 1012.09 d 749.00 381.62 b 189.44 c 74.40 a 44.29 c 278.50 566.78 a 805.38 d 1235.02 c 7720.42
1914 1136.67 a 1006.92 b 795.31 b 602.31 d 275.00 g 152.22 c 57.19 b 51.00 153.00 512.61 c 640.80 e 1259.63 a 6367.66
1915 1237.86 b 1042.22 a 876.50 420.50 f 493.50 151.00 f 28.00 60.40 b 266.50 450.00 855.00 1100.00 6409.98
1916 1236.50 904.50 673.98 b 483.62 a 369.42 a 98.50 14.43 b 62.50 h 0.00 z 0.00 z 0.00 z 0.00 z 3780.95
1917 0.00 z 934.96 e 0.00 z 0.00 z 0.00 z 16.50 r 0.00 g 19.12 a 102.41 a 317.23 a 634.66 a 778.00 2786.38
1918 1035.00 847.00 715.50 581.50 426.00 55.00 0.00 z 0.00 z 0.00 z 0.00 z 906.50 1133.00 5699.50
1919 1163.57 b 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 1163.57
1920 0.00 z 0.00 z 0.00 z 314.50 p 227.91 d 0.00 z 866.93 b 0.00 z 0.00 z 0.00 z 790.50 1172.00 3057.34
1921 1094.00 823.00 634.50 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 2551.50
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 26.00 g 393.38 b 716.54 d 881.95 a 1991.87
1923 930.53 b 925.75 d 832.72 b 530.40 e 268.48 c 209.40 e 2.00 i 2.50 k 82.50 m 6.00 z 266.50 s 741.50 i 3697.29
1924 1049.50 g 492.00 j 716.50 h 251.00 p 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
1925 1261.50 0.00 z 0.00 z 0.00 z 0.00 z 7.50 o 0.00 e 0.00 z 234.50 567.50 791.50 932.50 3787.50
1926 1064.33 a 818.50 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 1882.83
1927 0.00 z 0.00 z 0.00 z 511.67 c 318.00 117.00 6.56 e 95.00 210.50 g 477.73 c 754.14 a 1255.50 a 3535.59
1928 980.50 929.50 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 1910.00
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 0.00 z 0.00 z 919.50 0.00 z 379.00 24.31 a 15.50 9.50 115.00 533.20 a 835.00 1056.50 3887.51
1936 1079.00 929.00 793.50 504.50 254.50 101.00 17.00 6.50 153.00 467.00 784.14 a 1095.85 a 6184.99
1937 1767.50 1134.00 a 939.50 712.50 368.68 c 203.00 13.50 g 4.00 90.50 0.00 z 741.50 1051.00 7012.18
1938 1101.50 926.50 840.50 512.50 346.50 70.00 25.50 19.00 104.00 463.00 914.00 940.50 6263.50
1939 1071.00 1200.50 781.50 404.50 234.50 76.50 11.00 1.50 172.50 465.00 645.00 862.00 5925.50
1940 1043.50 914.00 679.00 489.00 215.00 48.75 b 9.54 e 12.00 g 189.00 435.00 863.04 b 1035.40 a 5921.22
1941 1097.00 818.00 800.00 741.50 367.00 221.90 a 85.50 151.00 404.50 684.77 c 858.00 0.00 z 6229.16
1942 1164.00 1073.50 899.00 571.50 435.55 a 113.00 7.00 49.00 182.00 402.50 718.50 899.50 6515.05
1943 1018.87 a 874.50 767.50 458.00 319.00 177.50 14.50 15.00 80.50 472.00 760.00 1077.50 6034.87
1944 1186.00 1063.50 911.50 691.00 366.00 251.38 a 10.85 a 6.72 a 126.50 411.00 869.50 989.00 6882.95
1945 1000.50 837.50 959.50 665.50 348.50 187.00 5.00 11.88 a 171.00 439.50 845.00 1168.50 6639.38
1946 1145.00 927.50 806.50 446.00 368.38 a 60.00 1.03 a 25.50 148.00 630.00 884.50 961.50 6403.92
1947 1110.50 736.50 666.50 552.00 206.50 174.50 18.50 35.00 77.00 417.50 922.50 1115.50 6032.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.00 21.00 132.00 461.50 896.00 1154.00 2670.50
1949 1384.00 1164.00 865.00 456.50 382.50 147.50 6.00 50.50 106.50 507.00 550.00 1159.50 6779.00
1950 1256.50 816.50 783.00 466.50 358.00 127.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 805.50 4613.50
1951 1148.55 a 912.24 c 647.00 h 0.00 z 315.74 d 129.31 a 5.00 48.50 130.00 524.86 b 934.14 a 737.00 l 4148.34
1952 1282.50 1085.50 1018.72 b 508.97 a 255.48 b 147.00 17.16 c 6.20 a 113.50 322.40 a 956.38 a 1167.67 a 6881.48
1953 903.50 893.93 a 807.00 595.00 486.50 90.52 a 0.00 42.50 90.50 488.50 747.00 1062.50 6207.44
1954 1118.00 618.00 844.00 402.00 233.57 b 176.50 5.00 83.70 a 180.00 b 405.00 643.45 a 1141.50 5850.72
1955 1296.00 1145.00 878.50 663.50 392.15 a 170.50 34.00 6.20 a 206.50 405.00 790.56 c 983.50 6971.41
1956 934.00 1049.00 788.00 576.00 318.27 a 53.00 33.50 82.50 58.50 448.50 798.50 957.50 6097.27
1957 1154.00 771.50 789.98 a 644.50 457.00 101.50 9.00 60.50 164.00 519.00 894.00 982.70 a 6547.68
1958 1040.50 812.00 959.50 641.00 232.00 97.50 29.50 4.00 165.00 412.00 774.00 864.50 6031.50
1959 993.50 918.50 748.00 475.00 382.50 35.50 1.50 33.58 a 222.00 383.76 b 709.00 956.50 5859.34
1960 1349.00 1070.85 b 726.00 526.50 319.50 41.50 0.00 36.00 94.00 508.50 748.00 969.50 6389.35
1961 1035.50 784.50 817.00 582.50 363.00 68.50 6.00 22.50 267.50 457.50 0.00 z 1206.42 a 5610.92
1962 1174.50 764.00 994.50 452.00 483.00 163.00 28.42 a 31.00 195.00 468.00 0.00 z 0.00 z 4753.42
1963 0.00 z 0.00 z 505.00 m 0.00 z 195.00 92.88 d 0.00 e 0.00 l 131.67 c 367.50 808.00 1063.50 2658.55
1964 1244.13 a 1038.82 a 980.12 a 0.00 z 0.00 z 0.00 z 5.34 b 0.00 z 214.50 336.87 a 956.00 1079.50 5855.28
1965 1031.50 896.00 953.25 c 663.00 469.81 b 225.56 c 12.00 53.22 a 327.32 b 362.50 383.50 l 739.00 k 4994.15
1966 1211.50 1049.50 426.00 o 0.00 z 261.00 61.00 7.50 0.00 z 0.00 z 0.00 z 0.00 z 1034.37 a 3624.87
1967 1125.00 0.00 z 740.50 762.50 365.00 0.00 z 0.00 z 0.00 z 180.00 h 416.50 749.50 1336.50 5495.50
1968 1285.00 865.50 808.50 716.50 397.50 106.00 21.00 151.50 241.50 485.00 836.50 1282.50 7197.00
1969 1125.50 1057.50 990.50 548.00 256.50 143.00 15.50 4.13 a 134.00 647.50 821.50 1023.50 6767.13
1970 1086.00 793.00 861.00 771.50 329.00 144.00 12.00 4.50 282.50 577.50 793.50 1212.74 b 6867.24
1971 1123.00 914.00 631.00 h 625.00 493.00 155.00 15.50 20.00 280.00 631.00 929.00 1248.50 6434.00
1972 1106.50 850.00 503.00 f 330.00 n 332.70 c 86.50 6.00 54.00 240.50 564.00 967.50 1323.18 a 5530.88
1973 1428.00 1033.00 1006.00 690.00 346.00 161.00 18.00 51.50 289.00 505.50 866.00 1065.50 7459.50
1974 1375.00 1110.50 732.50 650.50 323.00 42.00 13.50 41.50 204.50 481.00 831.00 1136.00 6941.00
1975 1158.50 1039.50 937.50 835.50 515.50 216.00 15.00 117.00 211.00 563.50 905.00 1126.50 7640.50
1976 1148.50 884.50 887.00 698.50 329.50 203.50 10.50 128.50 241.00 557.50 713.00 1073.50 6875.50
1977 1138.00 811.50 1028.00 558.50 525.50 72.50 9.50 40.82 a 204.50 454.00 772.50 941.00 6556.32
1978 1083.50 942.00 745.50 617.50 486.00 132.00 42.00 86.00 264.00 363.00 853.00 1297.50 6912.00
1979 1400.17 a 1172.00 952.00 637.50 384.50 176.50 35.00 105.00 123.00 390.00 972.00 1073.50 7421.17
1980 1084.00 898.00 961.50 627.50 502.00 202.00 37.50 95.50 200.00 492.00 759.00 819.00 6678.00
1981 915.00 859.50 858.50 496.50 385.00 71.00 1.50 44.00 166.00 587.50 775.50 993.50 6153.50
1982 1118.00 984.50 856.50 668.00 373.00 171.00 52.50 40.00 229.00 659.50 891.50 1155.00 7198.50
1983 1048.00 898.00 868.50 780.00 436.00 153.50 30.50 47.00 145.00 506.00 872.00 1074.50 6859.00
1984 1100.50 969.00 839.50 700.00 241.50 187.00 10.00 39.50 170.00 664.00 880.34 a 1168.50 6969.84
1985 1179.00 1042.50 862.50 481.50 374.50 99.50 18.00 27.50 345.00 513.00 888.00 946.50 6777.50
1986 907.00 802.00 666.00 593.50 344.00 65.50 54.50 12.50 371.00 605.50 797.50 1037.50 6256.50
1987 1184.00 932.50 924.00 498.00 380.50 73.50 58.00 68.50 144.50 375.00 833.00 1161.00 6632.50
1988 1144.00 845.50 843.50 573.50 370.50 94.00 0.00 29.50 256.50 297.00 814.00 1121.00 6389.00
1989 1332.50 1013.50 678.00 392.50 322.50 91.50 1.50 j 77.00 197.50 526.00 703.50 945.50 6280.00
1990 1131.50 961.00 745.00 502.50 411.50 102.00 10.00 68.50 164.50 511.00 828.50 1390.50 6826.50
1991 1246.50 807.50 975.00 721.50 505.50 208.00 18.00 17.50 111.00 371.00 836.00 1108.00 6925.50
1992 1197.00 883.50 735.00 379.50 271.50 128.50 30.00 53.50 181.50 365.00 909.00 1205.00 6339.00
1993 1130.00 988.50 753.50 530.50 322.00 172.50 48.50 57.00 197.00 504.00 885.00 1076.00 6664.50
1994 975.50 1005.50 678.50 536.50 318.00 54.50 0.50 0.00 122.50 532.00 991.50 1071.50 6286.50
1995 1089.50 662.50 753.50 642.50 466.50 209.00 0.00 z 10.00 133.50 439.50 635.00 673.50 l 5041.50
1996 1032.00 769.00 745.00 504.50 239.50 43.50 0.00 2.00 204.00 538.50 775.50 1024.50 5878.00
1997 1099.50 899.00 675.00 609.50 206.50 107.50 15.00 19.00 132.50 545.50 760.00 1063.00 6132.00
1998 1006.50 0.00 z 776.50 676.50 438.00 244.00 0.00 10.50 158.00 562.50 792.00 1014.50 5679.00
1999 898.50 835.85 a 703.18 a 735.00 411.50 197.50 0.00 6.50 0.00 z 0.00 z 0.00 z 0.00 z 3788.04
Period of Record Statistics
MEAN 1142.10 940.84 833.43 592.99 362.79 129.92 30.30 45.82 195.77 484.80 817.32 1079.21 6600.27
S.D. 142.81 130.42 107.52 104.51 89.46 58.14 96.16 44.25 81.36 95.31 96.53 132.15 468.27
SKEW 1.06 0.55 0.19 0.14 -0.07 0.17 8.20 1.62 0.93 0.51 -0.16 0.08 0.37
MAX 1767.50 1427.39 1096.92 835.50 531.13 251.38 866.93 204.50 475.50 778.50 1113.10 1390.50 7720.42
MIN 898.50 618.00 622.50 379.50 170.00 24.31 0.00 0.00 58.50 297.00 550.00 778.00 5850.72
NO YRS 85 80 79 77 88 85 82 80 80 79 79 75 48