CATOCTIN MTN PK, MARYLAND

Monthly Total Heating Degree Days

(181530)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201203
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
1968 1249.00 1158.50 706.00 389.46 b 292.00 43.50 1.50 28.50 43.45 a 349.50 670.71 b 1134.08 a 6066.21
1969 1219.00 1038.50 918.00 371.00 138.00 29.00 15.50 14.50 128.79 a 402.00 792.93 a 1217.50 6284.72
1970 1372.00 1024.00 763.00 f 480.00 120.50 20.00 2.00 0.00 57.00 301.00 619.50 1010.50 5006.50
1971 1230.00 945.50 870.50 465.00 222.50 20.00 1.50 6.50 53.00 204.00 692.50 806.50 5517.50
1972 1027.50 1061.50 853.00 472.50 172.50 77.50 12.00 12.00 67.50 499.00 800.50 861.50 5917.00
1973 989.50 970.50 596.00 471.00 243.50 11.00 1.50 10.50 68.00 283.00 588.50 973.00 5206.00
1974 916.50 961.50 729.00 353.00 222.00 48.00 1.50 0.00 139.00 416.50 635.00 933.00 5355.00
1975 989.50 880.96 a 884.50 611.00 117.00 50.50 0.00 1.00 166.50 251.50 488.00 1026.00 5466.46
1976 1230.00 757.00 646.00 388.00 233.00 21.00 1.00 18.00 103.50 508.00 825.50 1144.50 5875.50
1977 1497.50 932.00 600.50 346.00 88.00 66.96 b 8.50 13.50 66.00 427.00 381.00 k 1078.50 5124.46
1978 1310.00 1218.00 931.50 476.50 229.50 33.00 25.50 0.00 a 82.50 396.50 599.50 937.00 6239.50
1979 1219.50 1231.50 653.50 470.50 185.50 46.50 28.50 37.50 120.00 434.52 a 533.00 910.50 5871.02
1980 1133.50 1113.00 871.00 433.50 109.00 72.00 0.50 5.00 47.00 435.66 c 750.58 d 1039.50 6010.24
1981 1280.00 831.70 a 848.50 312.50 182.00 20.50 5.00 12.00 124.00 443.50 661.50 1099.50 5820.70
1982 1341.50 944.50 805.00 494.00 90.00 72.00 1.50 31.50 96.50 322.00 581.00 775.50 5555.00
1983 1085.50 922.00 741.50 514.00 193.00 27.50 4.50 8.50 113.50 349.50 630.50 1162.50 5752.50
1984 1211.00 810.00 982.50 497.50 215.50 24.50 7.00 9.00 139.50 206.00 732.00 737.00 5571.50
1985 1273.00 941.00 708.00 320.50 131.50 45.00 0.00 12.00 100.50 310.00 518.00 1120.00 5479.50
1986 1095.50 1006.00 717.00 401.50 127.00 23.00 2.00 33.50 71.50 331.00 726.50 974.50 5509.00
1987 1119.00 958.50 678.00 452.50 154.00 11.00 8.00 18.00 56.50 473.00 582.50 923.00 5434.00
1988 1201.50 1005.00 716.00 465.00 159.50 58.50 9.50 4.50 110.00 506.00 619.00 1050.38 a 5904.88
1989 901.00 930.00 826.15 a 465.50 224.50 10.50 0.50 18.50 115.00 298.00 697.50 1355.00 5842.15
1990 838.00 722.00 638.50 443.00 231.00 27.50 3.50 20.00 115.00 272.50 543.50 847.50 4702.00
1991 1055.50 785.50 687.50 360.00 76.50 19.50 0.00 0.00 0.00 z 0.00 z 0.00 z 865.00 3849.50
1992 1026.50 891.00 839.00 427.00 243.00 45.50 4.00 28.00 121.00 413.00 698.50 1014.50 5751.00
1993 994.00 1057.50 909.50 403.50 106.00 42.50 0.00 0.50 119.00 381.00 634.00 1039.50 5687.00
1994 1349.00 1002.50 848.00 257.00 250.00 13.50 0.00 25.50 92.50 321.50 507.50 792.00 5459.00
1995 1008.50 1019.50 662.50 437.50 175.00 13.50 3.50 0.50 0.00 z 244.00 837.50 1132.50 5534.50
1996 1181.50 993.00 897.00 392.00 271.00 7.50 3.50 6.00 94.00 337.50 815.50 894.00 5892.50
1997 1118.00 799.50 731.50 480.00 247.50 60.50 7.50 6.00 83.00 367.00 746.50 915.00 5562.00
1998 848.00 765.00 719.50 335.00 115.00 66.00 0.00 3.50 39.50 298.00 562.50 761.00 4513.00
1999 1035.00 823.50 833.00 372.00 110.50 35.50 0.50 2.50 72.50 352.00 465.00 873.00 4975.00
2000 1095.50 825.50 568.50 425.50 124.00 a 26.50 5.50 12.00 110.00 210.00 720.50 1246.50 5370.00
2001 1105.00 861.50 873.50 323.50 157.50 22.50 13.00 0.00 90.00 283.00 420.50 805.50 4955.50
2002 841.00 762.00 664.50 377.50 176.50 11.50 1.50 15.50 35.50 433.50 704.00 1056.50 5079.50
2003 1248.00 1082.00 750.00 404.50 219.50 65.50 0.00 33.00 104.50 460.00 509.50 1007.00 5883.50
2004 1284.00 971.00 663.00 388.00 59.00 36.00 0.00 12.00 29.50 360.00 573.00 939.00 5314.50
2005 1070.00 852.00 907.00 337.00 239.00 16.00 0.00 1.00 19.50 331.00 557.00 1115.00 5444.50
2006 847.50 898.00 727.00 320.00 182.50 26.00 0.00 z 0.00 102.00 372.00 542.00 724.50 4741.50
2007 910.00 1148.50 692.00 492.00 111.00 0.00 z 3.00 18.00 44.50 173.00 667.50 959.50 5219.00
2008 995.00 959.50 714.50 319.00 189.00 7.50 0.00 1.00 47.00 360.00 695.00 0.00 z 4287.50
2009 1250.00 875.00 710.00 368.50 139.00 23.50 2.50 0.00 81.00 393.50 517.50 117.50 z 4360.50
2010 1132.50 1032.00 582.50 228.00 120.00 12.50 3.00 g 0.00 z 45.00 133.50 q 0.00 z 1125.00 4277.50
2011 825.00 i 833.00 113.00 z 0.00 z 130.89 d 16.50 0.00 p 3.50 65.50 386.00 495.50 801.50 2732.39
2012 951.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 951.50
Period of Record Statistics
MEAN 1115.35 945.46 759.54 407.93 170.99 33.19 4.52 11.23 85.23 354.66 633.10 980.56 5566.69
S.D. 160.72 123.96 108.75 75.30 58.65 20.29 6.47 10.86 34.61 84.55 107.62 148.58 405.76
SKEW 0.06 0.33 0.17 -0.01 0.09 0.68 2.27 0.84 0.09 -0.16 0.14 0.24 -0.60
MAX 1497.50 1231.50 982.50 611.00 292.00 77.50 28.50 37.50 166.50 508.00 837.50 1355.00 6284.72
MIN 838.00 722.00 568.50 228.00 59.00 7.50 0.00 0.00 19.50 173.00 420.50 724.50 4513.00
NO YRS 44 44 42 43 44 43 41 43 42 42 41 42 34