TOK, ALASKA

Monthly Total Heating Degree Days

(509313)

Base Temperature = 65 F

File last updated on Jun 7, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1954 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 135.50 j 0.00 z 309.00 h 696.00 1117.03 a 1508.50 2686.00 6007.53
1955 0.00 z 937.00 o 1740.50 1244.00 782.00 433.50 213.90 a 464.50 725.00 1351.08 a 2405.00 2495.50 11854.98
1956 2844.00 2250.50 1845.50 1100.00 684.00 370.50 229.50 376.50 769.50 1474.00 1949.00 2925.50 16818.50
1957 2246.00 1963.00 182.50 z 1089.00 656.00 226.50 281.00 257.82 a 713.00 1230.00 1564.50 2573.50 12800.32
1958 2327.00 2018.50 1654.50 972.50 0.00 z 0.00 z 167.40 a 377.50 695.50 1587.50 1992.50 2457.00 14249.90
1959 2798.50 1765.50 2036.50 1129.50 630.50 226.50 311.50 377.00 651.00 1407.50 1911.00 2349.00 15594.00
1960 2284.00 1698.00 1929.00 1135.50 519.50 452.00 345.50 417.50 729.11 b 1211.14 b 1991.50 2139.50 14852.25
1961 2402.00 2033.50 2039.50 1241.00 617.79 c 268.00 h 252.50 345.65 a 671.00 1360.50 2134.50 2851.00 15948.94
1962 2373.50 1767.50 1796.00 1049.50 706.00 322.50 180.50 306.50 740.00 1106.38 b 1811.25 b 2309.50 14469.13
1963 2183.71 e 1740.50 1183.00 j 809.50 i 536.96 c 283.00 g 121.50 198.50 0.00 z 1258.00 2368.00 2351.00 10758.18
1964 2640.50 1655.00 1968.00 545.00 n 481.00 n 390.50 594.00 0.00 z 0.00 z 0.00 z 1845.50 2884.50 11978.00
1965 2890.00 2406.00 1088.50 1039.00 553.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7976.50
1966 3003.00 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 0.00 z 3003.00
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 322.50 r 1279.00 1688.79 a 2290.00 5257.79
1968 2412.50 1924.50 1623.00 1145.00 633.50 360.50 189.50 399.79 b 768.50 1443.00 1964.50 2759.50 15623.79
1969 3110.00 2130.50 1649.00 952.50 660.82 a 260.00 326.50 603.50 672.50 1135.50 2027.00 2214.50 15742.32
1970 2766.00 1720.50 1340.50 1114.50 661.00 442.24 a 297.50 393.00 800.50 1536.00 1804.50 2540.00 15416.24
1971 3167.17 a 1951.19 a 2065.63 a 1194.64 b 798.77 a 326.38 a 236.12 a 406.10 a 707.59 a 1338.17 a 2104.14 a 2422.50 16718.38
1972 2868.00 2358.32 a 2087.00 1339.04 d 481.00 i 346.67 c 0.00 z 350.50 849.00 1269.50 1971.00 2354.45 a 15793.48
1973 2826.00 2141.00 1682.00 959.00 582.50 f 364.14 a 251.74 b 432.97 a 515.00 k 1398.74 b 2376.50 2438.50 14870.59
1974 2860.50 2232.22 a 1869.09 b 1107.00 684.00 136.50 r 263.00 358.50 661.03 a 1388.91 c 2060.00 c 1878.00 f 13484.25
1975 2829.30 c 2189.70 a 1765.21 e 1154.48 a 0.00 z 0.00 z 0.00 z 341.00 g 638.33 c 1351.60 a 2247.86 b 2716.00 14892.49
1976 2485.68 a 893.50 q 1755.00 1042.00 699.00 204.00 l 199.00 306.00 730.50 1420.50 1753.00 0.00 z 10390.68
1977 0.00 z 1672.50 1736.50 1054.50 664.50 340.00 c 245.00 209.50 644.00 1322.00 2326.50 2745.22 d 12960.22
1978 0.00 z 1886.23 b 0.00 z 1033.85 d 655.81 b 0.00 z 178.50 325.50 635.36 b 1399.00 1971.50 2154.00 10239.74
1979 0.00 z 2779.54 b 976.50 n 1026.92 d 0.00 z 175.00 o 86.00 r 275.90 a 685.50 1162.00 1583.04 b 2542.00 10054.90
1980 1942.50 h 1834.50 1571.50 1002.50 631.50 0.00 z 228.50 412.62 b 775.86 a 1199.00 1814.00 3346.81 e 12816.79
1981 1900.00 0.00 z 1454.50 1194.00 471.50 398.00 276.00 386.98 a 787.00 1324.73 a 1809.00 2437.50 12439.22
1982 2980.65 a 2056.50 1809.50 1209.50 744.00 349.50 197.00 425.50 627.50 1543.50 2045.00 2188.08 a 16176.23
1983 2627.25 c 1878.50 1748.50 1011.00 661.33 a 296.38 a 252.00 431.00 793.97 a 1325.00 1924.00 2463.50 15412.43
1984 2320.00 2099.00 1380.53 a 968.00 742.97 a 297.00 263.50 355.50 648.00 1393.50 1898.00 2368.92 a 14734.92
1985 1771.00 2136.00 1635.00 1247.50 656.50 397.50 265.57 a 423.00 711.50 1458.50 2239.00 1895.00 14836.07
1986 2125.00 1861.50 1772.50 1345.56 c 557.00 225.00 245.00 483.00 661.00 1208.48 a 2252.50 1800.50 14537.04
1987 2138.50 1657.50 1725.00 961.00 586.50 278.00 151.12 c 286.00 653.00 1149.00 1810.50 2219.00 13615.12
1988 2406.00 1919.18 a 1482.50 911.50 565.50 201.67 c 102.00 406.10 a 780.00 1430.50 1965.50 2130.22 a 14300.66
1989 2779.00 1995.50 1884.00 822.41 a 628.27 a 298.50 166.00 313.00 523.00 1241.00 2118.00 2009.50 14778.18
1990 0.00 z 2401.50 1587.00 864.50 423.00 227.50 193.46 d 295.00 654.31 a 1380.00 2307.00 2340.50 a 12673.77
1991 2313.00 1841.00 1660.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 538.00 1370.50 2052.00 2414.00 12188.50
1992 2145.72 a 2073.50 0.00 z 1174.50 0.00 z 203.40 e 0.00 z 450.03 b 1010.69 a 1475.50 1849.00 2359.50 12741.84
1993 2250.60 a 1825.50 1512.00 859.14 a 377.50 179.00 127.00 329.00 642.50 1151.00 1841.00 2271.55 b 13365.79
1994 2211.85 a 2231.00 1498.50 915.50 675.50 0.00 z 189.50 151.00 689.50 1299.50 2045.50 2450.50 14357.85
1995 2360.65 a 1708.50 2121.00 859.50 0.00 z 0.00 z 185.00 334.80 a 0.00 z 1243.50 2205.50 2328.32 c 13346.77
1996 2861.00 1890.50 1612.00 0.00 z 0.00 z 0.00 z 101.94 e 356.50 f 775.50 1684.50 2190.50 2696.50 13812.44
1997 2675.50 1631.00 1893.50 1031.00 572.50 254.00 97.50 358.00 642.00 1613.55 a 1703.00 2210.00 14681.55
1998 2415.50 1781.00 1576.50 877.00 0.00 z 256.50 166.00 384.50 669.50 1454.00 1873.00 2477.50 13931.00
1999 2619.50 2284.50 1765.50 982.50 688.50 218.00 175.00 286.50 662.50 1286.00 2079.50 2298.00 15346.00
2000 2468.50 1617.00 1454.00 1042.00 691.00 249.00 191.50 478.50 706.50 1457.00 1775.50 2204.00 14334.50
2001 2024.50 1764.00 1646.50 855.50 701.00 216.50 206.00 282.00 626.50 1338.00 1807.76 a 2501.00 13969.26
2002 2043.50 1930.00 1871.50 1245.00 585.50 264.50 154.50 379.00 640.00 1042.12 a 1464.00 1996.50 13616.12
2003 2167.42 a 1515.50 1749.50 1030.50 631.50 301.50 126.00 359.50 822.00 1219.00 1855.00 2459.00 14236.42
2004 2679.50 1805.50 1775.50 955.00 447.50 0.00 z 113.00 231.00 885.50 1232.50 1876.00 2247.50 14248.50
2005 2385.50 1928.50 1392.50 959.00 423.00 290.50 212.50 326.00 623.00 1225.00 2089.00 2091.00 13945.50
2006 2574.00 1850.00 1989.50 1109.50 615.35 a 304.00 200.50 425.50 605.50 1184.50 2462.00 2231.50 15551.85
2007 2288.50 2065.00 2218.50 1006.00 605.00 216.00 142.00 277.00 661.00 1382.50 1696.00 2367.50 14925.00
2008 2444.02 c 2196.00 1565.50 1020.00 663.50 332.00 326.03 b 470.50 351.50 k 1519.50 1989.00 2544.00 15070.05
2009 2564.50 1951.00 1861.50 1004.50 546.00 281.50 103.50 348.00 639.50 1201.00 2030.50 1733.00 g 12531.50
2010 2276.36 b 1765.00 1656.00 929.00 508.92 a 301.00 199.00 275.50 701.00 1236.00 1614.00 2449.00 13910.78
2011 2405.50 2000.00 1977.50 1058.50 540.50 300.50 232.50 423.00 661.50 1262.50 2191.50 1964.50 15018.00
2012 2800.85 a 1752.43 a 1802.00 863.00 669.00 285.00 248.00 337.00 589.50 1434.02 b 2335.00 2764.50 15880.30
2013 2212.00 1848.50 1813.50 1492.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7366.00
Period of Record Statistics
MEAN 2491.40 1951.46 1733.35 1055.27 616.73 299.61 214.43 358.96 697.84 1330.57 1974.85 2402.30 14910.56
S.D. 318.98 242.06 220.21 140.84 94.25 70.07 83.32 82.07 85.57 137.44 235.35 278.72 894.41
SKEW 0.10 0.88 -0.26 0.71 -0.59 0.40 1.85 0.03 1.06 0.28 0.03 0.63 0.31
MAX 3167.17 2779.54 2218.50 1492.00 798.77 452.00 594.00 603.50 1010.69 1684.50 2462.00 3346.81 16818.50
MIN 1771.00 1515.50 1088.50 822.41 377.50 179.00 97.50 151.00 523.00 1042.12 1464.00 1800.50 9999.00
NO YRS 52 54 52 53 45 41 50 51 51 56 57 54 29