UMIAT, ALASKA

Monthly Total Heating Degree Days

(509539)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200104
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 837.00 1510.50 1939.00 2567.50 6854.00
1950 2078.00 2652.50 2409.50 1879.00 1226.00 536.00 285.50 452.50 896.50 1558.00 1657.00 2610.50 18241.00
1951 3171.00 2617.50 1435.50 p 1862.00 1203.00 585.00 325.50 481.50 926.50 1681.50 1837.00 2550.50 17241.00
1952 2834.00 2941.50 2744.00 2128.00 1528.00 773.50 323.00 569.00 1111.50 1538.00 1853.00 2583.50 20927.00
1953 2809.00 2615.00 2603.50 1895.00 1309.50 485.50 455.50 688.50 928.00 1706.00 2124.00 2882.00 20501.50
1954 2731.50 2525.00 2312.50 1910.50 1462.00 739.50 393.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 12074.50
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1959 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
1960 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
1961 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
1962 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
1963 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
1964 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
1965 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
1966 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
1967 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
1968 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
1969 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
1970 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
1971 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
1972 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
1973 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
1974 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
1975 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 1176.50 m 2516.50 2880.42 a 5396.92
1976 2825.50 2615.50 2384.00 1014.00 m 1297.00 587.00 321.37 a 317.00 h 860.00 1726.00 2158.00 3058.00 17832.37
1977 2563.50 2430.00 2935.50 2091.50 1383.50 573.50 406.50 366.00 876.00 1484.50 2372.50 2338.50 19821.50
1978 2266.00 2370.50 2607.00 2009.50 1517.50 657.50 276.50 562.50 797.50 1924.07 a 1924.50 2547.00 19460.07
1979 2353.50 2544.00 2729.50 1895.00 1018.00 503.00 224.50 284.50 842.50 1515.00 1697.00 2695.00 18301.50
1980 2600.90 a 2265.00 2404.50 2070.50 1337.00 373.50 494.50 641.00 1050.50 1306.00 f 2222.68 b 2663.50 18123.58
1981 2066.00 2432.37 a 2415.86 b 1944.50 1000.50 531.50 392.50 651.50 1065.00 858.00 o 0.00 z 0.00 z 12499.73
1982 2809.63 a 2138.08 c 2542.00 a 2002.00 1387.00 526.00 327.00 581.00 883.97 a 1864.50 2453.08 d 2686.87 e 20201.12
1983 2988.29 b 2557.00 2819.50 1958.79 a 1376.00 574.00 390.00 614.50 1082.59 a 1943.18 a 2194.66 a 2393.00 20891.51
1984 2705.00 3106.50 2700.50 2349.31 a 1398.50 545.00 405.00 630.50 823.50 1621.50 2648.04 b 2784.50 21717.85
1985 2375.50 2539.50 2468.63 a 2447.50 1184.00 564.50 428.12 b 537.50 986.00 1818.50 2120.69 a 2429.50 19899.94
1986 3053.50 2182.00 2802.00 2287.00 1393.50 626.50 358.05 a 618.00 816.50 1850.50 2430.00 2544.58 a 20962.13
1987 2646.37 a 2641.50 2671.68 a 2280.50 1263.50 569.00 340.00 520.00 1006.00 1535.50 2336.50 2548.72 a 20359.27
1988 2714.00 2445.00 2532.00 1967.00 1322.50 450.50 j 334.00 599.50 966.00 2076.00 2802.00 2428.85 a 20186.85
1989 2983.75 a 1607.00 2440.00 1594.50 1302.50 477.50 268.00 351.50 823.50 1553.10 a 2682.00 e 2570.00 18653.35
1990 3172.50 2754.50 2342.00 1559.50 911.50 455.00 294.50 b 517.18 a 1016.50 1741.17 a 2513.65 d 2819.97 a 20097.97
1991 2570.50 2621.50 2576.00 1861.11 c 1020.42 a 503.50 482.00 691.50 983.50 1637.00 2614.66 a 3111.00 20672.68
1992 0.00 z 2752.00 2393.00 1827.00 1250.00 467.78 c 264.00 522.72 b 1222.76 a 1776.00 2187.41 a 2564.73 a 17227.41
1993 2420.87 d 2263.50 2378.00 1882.24 a 1299.23 c 365.00 f 179.00 630.16 b 929.50 1324.73 a 2003.00 2553.37 a 17863.60
1994 2728.00 2294.00 2638.00 0.00 z 1253.00 420.50 h 243.50 400.70 d 1021.00 1846.50 2490.50 2707.52 c 17622.72
1995 2557.50 2312.00 2512.07 b 1719.50 1011.67 e 475.50 281.00 587.50 788.00 0.00 z 2011.07 b 2702.34 b 16958.16
1996 2569.79 b 2459.50 2071.83 a 2022.00 514.50 n 432.50 350.00 727.47 a 1110.50 1991.50 2038.93 b 2456.50 18230.52
1997 2738.50 2368.00 2616.50 1783.00 1221.63 d 424.00 351.50 478.50 826.00 1683.00 1940.50 2702.50 19133.63
1998 0.00 z 2559.50 2084.00 1426.00 0.00 z 0.00 z 214.00 508.00 768.00 1505.57 a 0.00 z 2342.50 11407.57
1999 2776.57 a 2501.00 2618.50 1515.50 g 0.00 z 466.20 e 301.14 c 374.77 c 0.00 z 1742.50 2285.00 2922.78 a 15988.46
2000 2529.00 1570.50 h 2172.50 f 1956.67 c 1385.50 411.50 277.00 f 668.80 d 927.93 a 1661.00 2148.62 a 2423.17 a 14112.18
2001 2527.50 2050.22 a 2677.50 1838.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 9093.72
Period of Record Statistics
MEAN 2660.89 2472.04 2532.05 1944.56 1268.98 533.23 334.82 544.89 936.99 1696.86 2213.84 2635.63 19990.13
S.D. 279.10 278.30 200.83 227.87 160.48 94.56 78.42 113.92 115.33 179.01 301.57 197.85 1009.58
SKEW -0.22 -0.63 -0.36 0.08 -0.60 0.78 0.17 -0.55 0.53 0.18 0.07 0.65 -0.35
MAX 3172.50 3106.50 2935.50 2447.50 1528.00 773.50 494.50 727.47 1222.76 2076.00 2802.00 3111.00 21717.85
MIN 2066.00 1607.00 2071.83 1426.00 911.50 373.50 179.00 284.50 768.00 1324.73 1657.00 2338.50 9999.00
NO YRS 29 30 29 28 27 26 29 28 29 27 29 30 16