SHEMYA USAF BASE, ALASKA

Monthly Total Heating Degree Days

(508419)

Base Temperature = 65 F

File last updated on Jun 7, 2013
*** Note *** Provisional Data *** After Year/Month 199503
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
1949 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 539.00 727.00 892.00 1024.00 3182.00
1950 905.00 877.50 1015.50 912.00 845.50 667.00 567.00 459.00 543.00 716.00 830.50 932.00 9270.00
1951 1004.50 907.00 1002.00 924.50 835.45 a 666.50 604.00 462.00 489.50 673.50 823.50 967.00 9359.45
1952 1008.00 1006.50 1035.50 909.50 798.50 710.50 570.50 467.50 504.50 664.00 929.50 1060.00 9664.50
1953 1066.50 1034.00 1041.50 909.00 877.00 721.00 563.00 508.50 526.50 733.00 876.50 1067.50 9924.00
1954 1051.50 940.50 1023.00 878.00 850.00 725.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5468.50
1955 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
1956 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
1957 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
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 615.00 0.00 z 509.00 692.00 907.00 1012.50 3735.50
1959 955.00 980.00 995.00 872.50 825.00 713.00 555.50 428.00 489.00 698.50 896.50 1082.00 9490.00
1960 1046.00 1031.50 953.50 906.50 833.50 674.50 549.50 451.50 489.00 744.50 960.00 1069.50 9709.50
1961 1054.00 936.50 1077.50 873.50 834.00 717.50 633.50 526.00 512.00 709.50 914.50 1000.00 9788.50
1962 989.00 924.50 991.00 839.50 794.50 654.50 509.50 513.00 536.00 734.50 921.00 944.50 9351.50
1963 944.50 888.00 966.00 890.50 791.50 677.00 576.00 550.00 520.00 705.00 823.00 998.50 9330.00
1964 1093.02 b 1088.00 1013.50 938.50 846.00 677.50 647.00 552.50 608.50 767.00 920.50 945.00 10097.02
1965 1059.00 904.50 1000.50 874.50 810.50 682.50 582.00 503.00 568.00 731.00 876.00 985.00 9576.50
1966 1047.50 987.50 1041.00 936.50 848.50 719.00 630.50 524.50 519.00 756.00 829.00 986.00 9825.00
1967 1058.00 991.50 989.50 914.50 795.50 680.00 571.00 458.50 568.00 742.00 894.00 1005.50 9668.00
1968 979.50 1020.50 1017.00 944.50 830.50 687.00 584.50 520.50 548.00 767.00 942.50 982.00 9823.50
1969 1028.00 986.50 1031.00 923.50 840.00 684.00 534.00 443.00 477.50 741.50 884.00 1099.50 9672.50
1970 1032.50 981.50 1064.50 904.50 827.50 686.00 618.00 514.00 507.50 705.00 833.00 1022.50 9696.50
1971 1058.00 1024.50 1075.50 923.50 881.00 703.50 641.00 571.00 567.00 749.00 854.50 1014.00 10062.50
1972 1059.50 919.50 1008.00 867.50 825.50 649.50 570.50 479.00 528.50 738.50 965.50 981.50 9593.00
1973 1108.00 996.00 1008.50 949.62 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4062.12
1974 0.00 z 0.00 z 0.00 z 0.00 z 803.00 622.50 539.00 491.00 481.00 689.50 854.50 1115.50 5596.00
1975 1110.50 1046.00 1141.00 927.50 871.50 710.50 586.00 499.50 491.00 712.50 850.00 990.50 9936.50
1976 984.50 1003.00 1084.50 961.00 837.00 710.00 608.00 544.50 567.00 743.00 891.00 1060.00 9993.50
1977 1052.50 1056.50 1160.50 937.50 822.50 637.50 517.50 379.50 432.50 724.00 0.00 z 0.00 z 7720.50
1978 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 470.00 516.00 696.50 801.50 990.50 3474.50
1979 1073.00 894.50 998.50 897.50 818.00 681.00 582.50 486.50 543.50 764.00 930.00 1018.50 9687.50
1980 1061.00 1082.00 1021.50 945.00 808.50 769.00 561.50 488.00 497.50 790.00 911.50 985.50 9921.00
1981 1209.50 974.00 1092.50 890.50 803.50 690.50 484.50 378.50 462.50 630.50 833.50 978.50 9428.50
1982 1048.00 848.00 960.50 855.00 773.00 681.50 575.00 519.00 560.00 706.00 846.00 1073.50 9445.50
1983 1087.00 951.00 988.00 896.00 833.00 689.50 564.00 470.50 530.00 652.50 898.50 937.00 9497.00
1984 1086.00 1018.00 1006.00 876.50 784.00 680.50 541.50 466.00 478.00 638.60 a 844.50 1020.50 9440.10
1985 1039.00 938.50 1110.50 916.00 872.00 698.00 607.50 532.50 517.00 619.00 781.00 992.50 9623.50
1986 1057.50 922.50 971.00 846.00 801.50 650.50 511.00 379.50 420.50 623.50 805.50 997.50 8986.50
1987 1109.00 967.50 952.50 895.00 813.00 683.50 601.50 551.00 537.00 695.50 875.00 1043.50 9724.00
1988 1128.50 1051.00 1090.50 961.50 831.00 677.00 568.00 476.50 435.50 648.00 880.50 1018.50 9766.50
1989 1077.00 906.00 963.50 844.00 787.50 666.00 511.50 0.00 z 497.50 633.50 821.00 914.50 8622.00
1990 1056.00 991.50 969.50 827.00 762.00 645.50 498.50 443.50 532.00 660.00 738.50 864.50 8988.50
1991 981.50 912.00 957.00 840.00 779.00 588.00 532.00 483.50 479.00 619.50 786.50 1032.30 a 8990.30
1992 1099.00 947.50 1040.50 0.00 z 0.00 z 632.50 0.00 z 0.00 z 0.00 z 0.00 z 886.50 995.50 5601.50
1993 0.00 z 848.00 0.00 z 916.50 789.50 606.50 505.00 417.00 495.50 679.50 859.00 1099.50 7216.00
1994 1030.00 870.50 1062.00 884.00 830.50 672.50 586.50 0.00 z 524.00 681.00 811.50 1063.00 9015.50
1995 1139.00 942.50 950.00 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 3031.50
Period of Record Statistics
MEAN 1050.65 964.91 1022.29 900.24 821.31 679.19 568.50 483.56 513.66 702.53 866.97 1009.24 9604.09
S.D. 56.90 62.77 52.85 35.68 29.16 34.47 41.68 48.95 39.45 45.81 51.28 53.44 294.28
SKEW -0.07 0.02 0.72 -0.24 0.15 -0.28 -0.08 -0.45 -0.20 -0.26 -0.20 -0.21 -0.49
MAX 1209.50 1088.00 1160.50 961.50 881.00 769.00 647.00 571.00 608.50 790.00 965.50 1115.50 10097.02
MIN 905.00 848.00 950.00 827.00 762.00 588.00 484.50 378.50 420.50 619.00 738.50 864.50 8986.50
NO YRS 39 40 39 38 38 39 38 36 40 40 40 40 32