SKWENTNA, ALASKA

Monthly Total Heating Degree Days

(508536)

Base Temperature = 65 F

File last updated on Jun 7, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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 488.50 987.00 1272.50 2092.50 4840.50
1950 2128.50 1667.00 1240.00 915.50 584.00 338.00 211.00 206.50 530.50 1076.50 1767.50 1743.50 12408.50
1951 1952.00 1685.00 1674.50 849.50 574.50 373.00 157.00 306.00 526.50 1077.00 1380.00 2009.50 12564.50
1952 2074.50 1421.00 1431.00 985.50 764.00 356.50 245.50 359.00 629.50 900.50 1104.00 1535.00 11806.00
1953 1965.50 1394.00 1503.00 907.50 588.00 197.00 159.00 331.00 550.50 1054.00 1450.00 1585.00 11684.50
1954 1986.00 1809.00 1423.50 1000.00 544.00 298.00 279.50 343.00 566.00 883.50 1297.50 2069.50 12499.50
1955 1642.50 1562.00 1485.50 1161.50 765.50 412.50 212.00 393.50 611.00 1120.00 1947.50 1974.00 13287.50
1956 1861.00 1732.00 1490.00 933.00 673.50 355.50 243.00 316.00 646.00 1254.50 1619.00 2143.00 13266.50
1957 1867.00 1627.00 1201.00 898.00 532.00 111.00 180.00 215.00 539.50 948.00 1082.50 1921.50 11122.50
1958 1612.00 1365.00 1249.00 812.50 576.00 294.00 272.00 334.50 644.00 1235.00 1425.50 1682.50 11502.00
1959 1890.00 865.50 l 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 1890.00
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 1134.00 1350.00 1789.14 c 4273.14
1971 1027.50 n 1366.50 1597.00 915.00 709.42 e 378.89 c 261.00 228.00 586.80 e 1120.00 1581.21 a 1794.26 b 10538.08
1972 1861.15 d 1613.00 1627.00 1300.00 670.50 290.50 h 114.70 a 33.00 v 616.50 1075.00 1418.50 1947.00 12243.35
1973 2154.00 1569.50 1331.50 875.00 624.50 304.50 239.50 188.50 p 0.00 z 0.00 z 0.00 z 0.00 z 7098.50
1974 0.00 z 0.00 z 0.00 z 845.00 c 539.06 d 196.50 j 218.60 b 164.50 g 0.00 z 0.00 z 1452.22 c 1322.50 h 3054.88
1975 1329.50 i 1654.33 d 1128.50 g 0.00 z 411.50 l 390.58 d 216.45 c 206.50 k 430.00 f 419.00 q 0.00 z 0.00 z 2261.36
1976 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
1977 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
1978 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 1269.00 g 0.00
1979 1683.30 a 1856.00 1247.00 970.50 586.79 c 371.00 197.92 e 171.50 j 466.03 a 811.74 d 1167.69 d 1386.00 j 9357.98
1980 1343.00 i 1239.75 c 1306.28 b 829.44 c 608.78 b 354.50 242.66 b 275.00 h 573.50 925.72 b 1206.96 b 2324.47 b 9612.06
1981 1145.89 c 1284.35 e 1050.68 c 785.00 f 489.36 c 326.11 c 84.00 y 86.50 u 557.00 969.50 1465.00 1767.50 9055.39
1982 2073.00 1477.50 1366.00 1086.00 722.00 361.50 279.50 323.50 589.50 1303.50 1492.50 1521.07 a 12595.57
1983 1794.50 1407.26 a 1281.00 865.50 567.50 274.00 191.50 353.63 d 641.11 c 1020.50 1315.50 1741.00 11453.00
1984 1755.00 1536.50 1036.00 950.50 0.00 z 181.50 g 0.00 z 0.00 z 0.00 z 0.00 z 1621.55 a 1712.48 b 8612.03
1985 1205.90 a 1559.00 1354.50 1164.11 b 710.79 c 420.00 217.00 b 382.85 a 652.76 a 1162.50 c 1783.20 e 1303.60 b 11916.21
1986 1398.74 b 1310.81 a 1326.11 d 1088.33 c 602.84 c 349.62 d 261.84 c 440.72 a 542.50 883.50 a 1329.00 e 1348.50 a 10882.51
1987 1480.85 e 1250.00 1376.83 b 875.36 b 484.50 f 381.67 c 244.12 c 296.16 c 593.79 a 887.38 c 1305.50 1835.64 c 10527.29
1988 1391.00 f 1327.56 b 1133.64 b 878.33 c 549.70 c 216.92 d 147.54 d 284.34 b 537.41 a 1098.36 b 1497.86 b 1540.70 a 9212.36
1989 2257.04 e 1575.50 1445.63 a 866.38 a 592.62 a 295.71 b 159.00 246.50 505.96 d 1049.87 a 1645.86 a 1429.62 a 12069.69
1990 1784.16 c 1978.08 d 0.00 z 827.78 c 358.50 h 201.35 d 164.54 e 207.50 f 472.50 f 806.00 i 1297.50 h 840.50 p 4955.91
1991 1224.50 j 1053.50 h 433.00 v 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
1992 1172.50 g 948.50 j 603.50 q 187.00 y 1120.17 e 163.00 n 226.54 e 330.00 795.00 0.00 z 0.00 z 0.00 z 2471.71
1993 443.50 w 0.00 z 656.50 n 476.50 m 271.00 h 225.52 a 77.00 g 198.00 f 576.67 c 878.33 d 1394.46 b 1147.50 f 3074.98
1994 1153.00 f 1475.92 b 1084.50 f 810.00 b 419.00 g 230.77 d 85.00 l 169.00 g 527.88 d 1029.20 a 1659.23 d 1629.88 e 7362.89
1995 1637.63 e 1344.56 c 1575.50 800.69 a 567.50 259.00 158.50 228.88 a 308.00 f 907.35 e 1379.40 e 1285.50 g 8859.01
1996 2062.57 b 1582.31 e 1195.88 e 827.68 b 491.00 239.00 184.00 303.50 630.00 a 1286.50 a 1683.62 a 1838.96 c 12325.03
1997 1380.00 g 637.50 j 1341.78 a 911.11 c 529.21 c 216.50 107.00 230.00 511.50 977.00 f 1254.00 1701.12 c 6802.23
1998 1801.32 c 1234.59 a 1231.98 b 845.50 668.50 310.50 246.93 b 391.12 a 585.50 986.00 1433.79 a 1718.84 c 11454.58
1999 1922.00 b 1702.96 c 1349.57 b 953.00 596.46 d 222.32 b 179.80 a 283.65 a 597.86 b 1055.07 b 1517.22 c 1882.14 c 12262.05
2000 1776.00 1253.21 a 1198.09 d 903.75 b 642.73 a 308.79 a 267.24 b 362.00 652.76 a 1042.50 1279.50 1499.62 c 11186.21
2001 1328.50 1286.50 1117.00 859.50 661.85 a 163.50 205.93 c 204.50 474.50 1121.17 a 1494.00 1927.88 b 10844.82
2002 1468.00 1352.30 a 1387.80 c 1061.00 527.00 b 292.50 b 150.00 248.50 f 518.04 b 838.50 1019.48 a 1400.88 b 10015.50
2003 1578.00 1080.07 a 1304.00 896.25 b 595.00 271.00 f 168.00 307.62 e 636.72 a 875.50 1526.50 1723.08 a 10690.75
2004 2046.00 a 1240.50 1338.00 825.00 a 447.50 183.50 107.00 163.50 716.00 921.00 1256.50 1600.50 10845.00
2005 1733.93 a 1425.41 a 1112.00 852.50 456.00 89.00 v 102.00 j 233.50 509.50 1011.50 1683.50 1386.45 b 10404.29
2006 2050.13 a 1385.50 1421.00 934.50 240.50 u 161.00 k 177.98 b 352.88 a 508.45 a 894.50 1679.50 1508.84 b 10913.29
2007 1708.50 1604.50 1705.50 781.67 c 528.50 260.00 217.60 e 242.12 b 511.50 1008.53 a 1130.69 a 1603.73 a 11302.84
2008 1830.00 1624.54 b 1174.00 999.50 626.20 a 373.45 a 272.80 a 216.00 j 549.00 1238.00 1462.50 1866.20 a 12016.19
2009 1910.63 a 1605.50 1404.30 a 941.38 a 478.95 a 293.50 138.98 a 341.50 546.72 a 822.50 1523.28 a 1747.00 11754.25
2010 1669.50 1260.00 c 1246.00 0.00 z 500.00 330.00 d 284.50 213.50 f 510.50 899.00 a 1392.93 a 1949.00 10041.43
2011 1719.47 a 1639.00 1401.41 b 652.50 h 556.50 323.08 d 251.62 a 343.21 c 560.36 b 939.50 1775.00 1645.38 e 11154.53
2012 2237.17 a 919.50 h 1499.22 b 837.32 b 607.17 b 287.78 c 323.29 c 363.22 a 611.00 1067.43 a 1624.00 1837.00 11294.60
2013 1483.87 a 952.50 f 1352.00 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 2835.87
Period of Record Statistics
MEAN 1788.39 1484.88 1345.99 922.94 604.39 297.04 209.11 304.28 574.39 1019.04 1447.73 1738.48 11865.15
S.D. 266.39 196.44 160.10 111.33 114.74 73.26 52.91 66.03 66.51 129.65 205.52 229.13 724.26
SKEW -0.45 0.27 0.23 1.46 2.32 -0.45 -0.10 -0.23 0.93 0.45 0.09 0.22 0.36
MAX 2257.04 1978.08 1705.50 1300.00 1120.17 420.00 323.29 440.72 795.00 1303.50 1947.50 2324.47 13287.50
MIN 1145.89 1080.07 1036.00 781.67 447.50 111.00 107.00 163.50 466.03 811.74 1019.48 1303.60 9999.00
NO YRS 40 42 42 41 40 40 42 33 42 42 45 41 22