BITTER LAKES WL REFUGE, NEW MEXICO

Monthly Total Heating Degree Days

(290992)

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
1950 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 630.33 a 630.33
1951 779.00 595.50 425.50 201.50 39.50 k 0.00 s 0.00 0.00 19.50 101.50 545.00 694.00 3361.50
1952 561.50 581.00 533.00 162.00 34.50 0.00 2.00 0.00 9.00 224.50 625.50 814.00 3547.00
1953 579.00 640.00 341.00 184.00 118.00 0.00 0.00 0.00 0.50 192.00 564.31 a 788.00 f 2618.81
1954 728.00 449.00 437.50 79.00 46.00 0.00 0.00 0.00 d 0.00 158.00 442.00 735.50 3075.00
1955 785.00 498.75 d 335.00 153.00 0.00 z 0.00 z 0.00 0.00 0.00 158.50 437.00 639.00 3006.25
1956 700.71 b 787.50 375.00 207.00 7.00 0.00 0.00 0.00 0.00 99.00 591.50 725.50 3493.21
1957 684.50 322.00 406.50 196.00 41.50 10.00 0.00 0.00 17.00 233.00 598.50 701.63 a 3210.63
1958 791.00 539.00 b 573.00 215.50 26.19 b 0.00 0.00 0.00 23.00 226.00 532.00 778.00 3703.69
1959 786.00 643.50 492.38 a 233.00 24.59 b 0.00 0.00 0.00 14.50 219.00 627.50 703.00 3743.47
1960 835.00 690.00 413.00 122.50 44.50 0.00 0.00 0.00 4.00 168.50 466.00 964.50 3708.00
1961 905.00 557.00 403.00 176.00 14.50 1.00 0.00 0.00 7.50 186.50 696.50 715.50 3662.50
1962 900.00 397.19 a 504.50 146.50 9.00 0.00 0.00 0.00 2.50 141.10 b 467.50 713.00 3281.29
1963 952.00 529.00 405.50 99.00 23.00 0.00 0.00 0.00 0.00 58.00 446.50 867.50 3380.50
1964 889.70 a 819.00 414.37 a 202.00 7.50 5.50 0.00 0.00 a 18.50 171.50 368.50 i 587.50 h 2528.07
1965 509.50 f 664.16 c 584.57 c 131.25 b 12.52 e 2.40 e 0.00 f 0.00 d 19.00 j 196.13 e 388.89 c 666.00 2645.92
1966 999.50 692.50 395.25 a 133.50 26.50 m 0.00 c 0.00 4.13 a 0.00 h 150.00 j 222.50 m 398.00 p 2224.88
1967 543.50 f 572.32 c 157.50 h 52.00 h 20.00 m 0.00 g 0.00 f 0.00 8.00 g 152.02 e 244.50 l 808.21 c 1532.55
1968 569.00 g 520.93 b 458.11 d 246.96 b 7.50 j 0.00 m 0.00 f 0.00 k 15.00 o 116.00 h 511.55 a 804.28 d 2541.83
1969 588.50 594.50 709.68 c 142.00 47.00 0.00 a 0.00 0.00 a 0.00 c 193.50 f 585.00 d 726.84 c 3393.52
1970 884.69 e 567.78 a 487.50 f 216.67 c 83.46 e 10.56 c 0.00 b 0.00 h 71.54 d 225.00 h 579.23 d 406.50 i 2413.92
1971 784.41 c 613.31 b 316.50 f 138.00 h 42.00 i 0.00 h 0.00 h 0.00 g 77.00 j 160.50 m 308.00 l 546.00 g 1397.72
1972 469.50 m 437.00 g 299.87 e 159.00 34.50 1.50 0.00 c 0.00 18.00 f 189.32 c 684.64 b 857.09 d 2225.92
1973 880.50 696.23 b 477.50 345.56 c 89.79 b 0.00 0.00 0.00 36.00 186.00 475.50 831.00 4018.08
1974 849.40 a 0.00 z 281.50 185.50 41.33 a 0.00 0.00 2.50 128.28 a 203.05 a 548.04 b 827.00 3066.59
1975 802.50 703.50 527.50 332.31 d 106.50 5.00 0.00 0.00 97.50 220.00 579.00 806.00 4179.81
1976 854.88 e 500.50 457.00 167.00 82.67 a 0.00 b 0.00 c 0.00 a 46.00 403.53 b 723.10 a 898.50 4133.19
1977 958.50 600.50 539.00 184.50 5.00 0.00 b 0.00 e 0.00 0.00 151.90 a 449.50 703.00 3591.90
1978 932.00 715.50 433.00 108.50 64.00 7.00 0.00 0.00 53.00 199.50 496.00 890.98 b 3899.48
1979 993.00 661.50 494.50 183.21 b 64.50 9.50 0.00 0.00 38.50 186.00 684.00 846.50 4161.21
1980 821.50 b 646.00 491.00 278.50 69.00 0.00 0.00 a 0.00 18.50 302.25 a 648.50 713.00 3988.25
1981 777.58 a 607.50 461.50 153.50 36.00 1.50 0.00 0.00 12.00 202.00 419.50 694.40 a 3365.48
1982 861.00 687.50 423.00 184.50 34.50 0.00 0.00 0.00 7.50 261.00 561.00 859.50 3879.50
1983 830.50 615.00 429.00 362.50 65.00 14.00 0.00 0.00 27.00 150.50 429.50 961.50 3884.50
1984 895.50 641.00 473.00 248.50 33.00 0.00 0.00 0.00 40.00 k 276.00 507.50 746.00 3820.50
1985 892.00 690.00 360.50 115.50 30.50 8.00 0.00 0.00 38.00 197.00 427.24 a 826.50 3585.24
1986 723.00 536.00 342.00 100.00 50.00 4.00 0.00 0.00 a 4.00 237.50 402.00 i 822.00 2818.50
1987 820.50 566.50 352.00 j 290.50 40.50 0.00 0.00 0.00 a 18.00 140.00 556.03 a 867.50 3299.53
1988 900.00 635.93 a 477.50 236.00 36.50 l 1.00 6.20 a 9.00 n 9.50 m 67.00 o 215.00 p 567.50 k 2256.63
1989 404.00 n 475.00 i 169.00 q 157.00 17.00 5.00 0.00 0.00 54.00 203.00 560.00 1015.50 2011.50
1990 851.00 588.00 470.50 158.50 77.50 0.00 0.00 3.00 4.50 206.00 486.00 886.50 3731.50
1991 888.00 545.50 416.50 152.50 17.50 0.00 0.00 0.00 92.50 187.50 617.00 822.00 3739.00
1992 880.50 585.50 423.00 169.00 50.50 7.00 0.00 0.00 21.00 158.00 657.00 836.00 3787.50
1993 783.00 418.00 j 451.00 194.00 47.50 0.00 0.00 0.00 24.00 257.50 662.50 806.00 3225.50
1994 820.00 673.00 436.00 192.41 a 41.00 0.00 0.00 0.00 a 8.00 144.50 j 123.50 u 355.00 n 2170.41
1995 259.50 u 142.00 s 442.50 154.00 l 7.50 i 0.00 l 0.00 n 0.00 39.31 a 59.50 p 446.00 360.00 o 927.81
1996 353.50 p 188.50 p 555.00 111.00 l 0.00 s 0.00 a 0.00 0.00 k 7.00 m 215.50 282.00 l 247.00 u 770.50
1997 269.50 v 0.00 z 9.00 z 295.50 17.00 m 6.72 a 0.00 0.00 11.50 239.73 a 594.50 1009.50 2157.46
1998 819.00 554.50 490.00 286.00 6.00 1.50 0.00 0.00 0.00 152.00 440.00 737.00 3486.00
1999 366.50 l 374.50 f 263.00 i 155.50 f 74.06 d 6.11 c 1.00 l 0.00 43.93 b 225.94 e 388.85 d 815.62 b 1554.50
2000 698.02 a 407.67 c 357.65 d 121.67 c 20.00 0.00 b 0.00 0.00 c 25.18 b 173.48 e 642.22 c 829.25 e 3275.14
2001 616.00 j 511.00 b 452.27 c 114.50 28.50 0.00 a 0.00 e 0.00 e 7.00 137.00 393.00 748.59 d 2391.86
2002 695.00 636.50 503.00 89.50 11.50 i 0.00 0.00 0.00 0.00 k 114.50 m 582.00 751.50 3257.50
2003 687.50 539.30 e 408.00 121.00 12.50 0.00 0.00 0.00 8.00 88.50 415.50 465.50 j 2280.30
2004 716.00 679.00 309.00 154.00 h 37.00 0.00 0.00 0.00 23.50 166.00 548.50 479.00 j 2479.00
2005 287.50 n 537.00 438.00 206.00 70.00 0.00 z 0.00 a 0.00 3.50 181.00 490.20 e 779.50 2705.20
2006 659.00 574.50 334.00 67.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1634.50
Period of Record Statistics
MEAN 809.40 596.01 442.05 184.14 42.84 2.24 0.17 0.19 23.95 190.91 536.53 797.21 3673.50
S.D. 105.16 94.78 79.86 68.45 27.71 3.61 0.92 0.79 28.38 57.94 92.20 91.26 300.20
SKEW -0.48 -0.38 0.56 0.72 0.75 1.54 6.00 4.00 1.87 0.81 0.14 0.43 -0.09
MAX 999.50 819.00 709.68 362.50 118.00 14.00 6.20 4.13 128.28 403.53 723.10 1015.50 4179.81
MIN 561.50 322.00 281.50 67.00 5.00 0.00 0.00 0.00 0.00 58.00 388.85 630.33 3075.00
NO YRS 45 48 49 50 44 48 49 50 45 46 47 45 26