SEWARD 8 NW, ALASKA

Monthly Total Heating Degree Days

(508375)

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
1983 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 328.50 375.50 635.40 e 0.00 z 0.00 z 0.00 z 1339.40
1984 681.50 r 985.00 f 916.05 a 831.00 687.54 c 413.50 302.00 345.13 a 539.50 753.00 h 1344.23 d 1017.00 g 5378.95
1985 1020.23 c 1359.04 a 1146.50 1101.50 590.50 f 537.50 323.00 418.00 556.00 1095.69 b 1035.50 k 453.50 s 7557.46
1986 1227.48 e 1209.25 d 1257.16 c 827.50 f 637.29 e 443.00 310.00 452.08 a 552.00 510.00 j 0.00 z 0.00 z 6088.26
1987 1195.00 1023.62 b 1183.50 473.50 n 692.33 a 495.00 329.50 379.75 a 587.50 851.00 1153.50 971.00 k 7890.70
1988 1380.05 c 1097.00 1045.98 b 924.00 703.81 d 431.50 288.00 394.22 a 601.61 b 907.78 a 1260.00 c 1417.06 e 10451.02
1989 1523.50 h 1005.00 f 802.50 k 204.50 v 497.00 f 456.00 273.66 b 358.05 a 396.50 h 946.02 a 1363.39 b 1118.30 d 4515.41
1990 1599.17 b 1611.62 b 1139.80 c 835.38 d 600.33 e 337.76 a 315.88 b 338.86 b 545.69 a 995.00 1554.11 b 1485.00 11358.60
1991 1551.00 1199.85 a 1191.00 837.50 694.29 b 396.21 a 373.55 a 432.85 d 526.00 933.50 1148.00 1403.27 a 10687.02
1992 1362.50 1514.00 1269.50 970.50 645.50 f 410.69 a 321.00 450.00 826.15 d 1055.50 1194.50 1593.40 a 10967.74
1993 1532.36 b 1171.15 b 1046.25 a 768.50 598.09 b 414.83 a 243.50 336.41 d 550.71 b 816.50 1183.39 b 1229.67 d 9891.36
1994 1328.19 b 1456.58 d 1220.22 b 793.45 a 667.53 a 375.00 348.00 260.50 592.50 d 941.50 1423.50 1406.37 a 10813.34
1995 1477.67 a 1271.85 b 1459.58 a 773.28 a 678.38 a 392.50 316.20 a 388.50 473.00 849.52 e 1317.22 c 1281.16 b 10678.85
1996 1808.69 b 991.50 g 729.00 j 861.50 559.00 414.64 b 306.00 374.58 a 609.44 c 1142.72 b 1357.20 e 1595.95 c 9029.73
1997 1569.52 d 882.52 a 1240.52 a 656.00 h 541.98 a 317.00 220.88 c 288.00 512.07 a 1059.00 1124.50 1551.50 9307.48
1998 1420.66 b 1012.50 957.00 861.21 a 738.26 d 395.69 a 326.50 407.28 b 600.56 c 954.50 1171.55 a 1566.03 b 10411.73
1999 1667.11 d 1647.85 a 0.00 z 959.00 503.00 i 386.11 c 239.39 d 267.50 g 554.50 700.50 f 1255.86 a 1590.82 a 8300.64
2000 1603.45 b 1062.80 b 988.50 810.00 e 675.00 388.39 b 351.33 a 407.65 a 581.90 a 922.54 d 1030.80 e 931.00 f 8822.35
2001 1130.97 b 1144.50 1098.43 a 892.78 c 0.00 z 0.00 z 0.00 z 249.00 f 394.00 h 1051.33 b 1331.79 b 1697.85 e 8347.64
2002 584.50 p 0.00 z 285.50 w 0.00 z 425.00 k 0.00 z 275.90 a 392.09 d 523.93 b 720.75 a 858.50 1266.57 c 4037.74
2003 1230.18 a 913.63 a 1233.91 c 641.00 f 448.50 i 0.00 z 0.00 z 245.50 h 0.00 z 0.00 z 0.00 z 0.00 z 3377.72
2004 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 872.50 1093.33 c 1287.50 3253.33
2005 1385.38 b 0.00 z 0.00 z 0.00 z 372.50 h 0.00 z 0.00 z 0.00 z 0.00 z 765.50 g 1459.20 e 1164.80 d 4009.38
2006 1644.00 875.00 g 0.00 z 0.00 z 601.92 a 0.00 z 0.00 z 330.00 522.86 b 839.21 c 1358.50 f 810.00 m 3937.99
2007 1504.10 e 933.00 g 1013.00 l 0.00 z 0.00 z 0.00 z 231.47 a 325.50 c 461.54 d 0.00 z 0.00 z 0.00 z 2522.60
2008 0.00 z 0.00 z 927.00 g 44.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1066.40 a 1308.33 c 1589.78 a 3964.52
2009 1197.00 i 1300.92 b 980.50 g 929.40 e 425.50 g 385.86 a 278.45 c 399.50 0.00 z 775.57 d 675.50 n 828.00 m 4069.71
2010 1016.00 i 1062.83 d 840.50 i 287.00 u 302.50 o 425.89 b 419.50 436.07 a 273.50 k 608.00 k 346.50 u 0.00 z 2344.29
2011 1051.50 g 1319.65 e 257.00 y 263.00 u 495.00 g 452.31 d 335.12 b 437.10 a 335.00 m 446.00 p 1548.33 c 0.00 z 4092.51
2012 0.00 z 1133.59 a 1371.50 471.50 o 0.00 z 430.86 a 400.86 b 405.77 c 391.50 j 1061.00 1475.00 1601.67 a 7880.25
2013 1216.00 1066.00 1254.43 b 656.50 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3536.43
Period of Record Statistics
MEAN 1421.60 1212.42 1167.77 876.60 648.27 414.30 310.76 380.56 567.64 945.60 1270.74 1435.93 10613.13
S.D. 201.72 213.29 141.69 89.03 58.92 48.33 49.77 49.89 75.28 114.24 171.75 175.02 446.00
SKEW -0.14 0.55 0.03 1.00 -0.41 0.47 0.14 -0.61 1.93 -0.12 -0.32 -0.35 0.07
MAX 1808.69 1647.85 1459.58 1101.50 738.26 537.50 419.50 452.08 826.15 1142.72 1554.11 1697.85 11358.60
MIN 1020.23 882.52 916.05 768.50 541.98 317.00 220.88 260.50 461.54 720.75 858.50 1118.30 9891.36
NO YRS 21 21 18 15 14 21 24 24 20 21 22 18 7