LOWER MONUMENTAL DAM, WASHINGTON

Monthly Total Heating Degree Days

(454841)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
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 349.50 587.50 794.50 1731.50
1963 1133.50 689.00 535.50 421.00 177.00 35.00 1.50 0.00 31.00 231.50 565.00 980.50 4800.50
1964 781.50 699.50 626.50 398.50 196.50 42.00 0.00 12.00 57.00 331.00 725.00 1043.00 4912.50
1965 904.50 631.00 660.50 268.00 157.00 21.00 7.50 7.00 87.00 194.00 550.50 873.50 4361.50
1966 860.00 657.50 540.50 301.00 117.00 53.50 12.50 5.00 12.00 316.00 571.00 716.88 c 4162.88
1967 699.50 586.00 585.00 451.03 a 177.00 9.50 0.00 0.00 11.00 260.50 665.00 880.00 4324.53
1968 853.00 600.50 448.50 399.00 101.50 14.00 0.00 0.00 z 62.68 b 381.00 681.00 879.62 c 4420.80
1969 1318.50 818.50 570.50 339.31 a 93.50 9.50 0.00 1.00 35.00 384.50 614.50 870.00 5054.81
1970 921.39 d 612.50 576.50 427.50 142.00 27.50 0.00 0.00 122.00 381.00 657.00 874.50 4741.89
1971 802.50 661.50 695.50 408.00 132.50 100.50 7.50 2.00 99.00 369.00 629.00 887.00 4794.00
1972 981.00 808.50 559.50 456.00 150.50 36.00 0.00 z 0.00 116.50 312.00 624.00 1089.00 5133.00
1973 1008.50 696.00 521.50 346.00 140.50 50.50 1.50 1.00 34.00 0.00 z 679.50 728.00 4207.00
1974 1065.50 603.50 0.00 z 359.48 a 231.50 31.00 8.50 0.00 38.00 268.50 571.00 747.50 3924.48
1975 918.00 808.00 659.00 508.00 215.50 69.50 1.00 7.50 19.00 0.00 z 658.00 0.00 z 3863.50
1976 821.50 745.50 704.00 406.50 158.50 76.00 1.50 9.00 12.50 314.00 638.00 937.50 4824.50
1977 0.00 z 659.50 620.50 308.00 225.50 14.00 5.50 1.50 100.50 334.50 688.00 835.50 3793.00
1978 956.50 680.00 533.50 384.00 235.50 25.50 2.50 30.00 105.50 386.00 904.00 1054.50 5297.50
1979 1515.00 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 1515.00
1980 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
1981 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
1982 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
1983 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
1984 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
1985 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
1986 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
1987 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
1988 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
1989 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
1990 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
1991 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
1992 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
1993 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
1994 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
1995 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
1996 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
1997 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
1998 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
1999 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
2000 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
2001 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
2002 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
2003 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
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 0.00 z 0.00 z 0.00 z 0.00
2005 0.00 z 0.00 z 0.00 z 336.00 0.00 z 0.00 z 0.00 z 0.00 0.00 z 0.00 z 665.50 998.50 2000.00
2006 536.00 f 0.00 z 551.00 304.62 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 855.62
Period of Record Statistics
MEAN 971.27 684.81 586.75 379.00 165.72 38.44 3.30 4.75 58.92 320.87 648.53 893.53 4727.46
S.D. 208.17 75.70 69.43 63.32 45.33 26.01 3.98 7.76 40.22 59.50 80.44 112.31 349.72
SKEW 1.29 0.59 0.08 0.10 0.12 0.94 1.02 2.33 0.28 -0.71 1.69 0.11 -0.18
MAX 1515.00 818.50 704.00 508.00 235.50 100.50 12.50 30.00 122.00 386.00 904.00 1089.00 5297.50
MIN 699.50 586.00 448.50 268.00 93.50 9.50 0.00 0.00 11.00 194.00 550.50 716.88 4162.88
NO YRS 16 16 16 18 16 16 15 16 16 15 18 17 10