COVELO, CALIFORNIA

Monthly Total Heating Degree Days

(042081)

Base Temperature = 65 F

File last updated on Jul 24, 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 e 9.00 94.50 256.00 576.43 b 845.50 1781.43
1949 942.50 716.50 543.00 238.50 167.50 28.97 a 0.00 n 1.50 21.43 b 215.00 f 378.00 e 797.50 3835.39
1950 963.50 544.00 561.50 336.50 175.50 g 73.93 b 0.00 2.21 c 56.50 254.50 452.31 d 595.50 3840.45
1951 728.50 571.00 569.50 257.00 182.50 35.50 1.00 6.00 7.50 255.50 460.50 711.50 3786.00
1952 850.00 589.00 627.50 280.50 157.50 102.50 0.00 0.00 19.00 110.00 563.50 726.50 4026.00
1953 189.00 u 537.50 558.00 400.00 363.00 150.00 0.00 19.50 15.00 268.00 455.00 697.00 3463.00
1954 708.00 480.00 562.50 274.00 108.00 117.50 1.50 21.50 87.00 263.50 496.00 763.50 3883.00
1955 813.50 616.50 560.50 519.50 209.00 52.00 21.91 b 1.00 57.00 206.00 552.00 605.00 4213.91
1956 669.50 699.50 534.00 320.50 209.25 a 57.00 1.50 4.00 41.50 283.00 499.50 752.50 4071.75
1957 848.00 489.00 504.00 354.50 203.50 0.00 z 0.00 z 15.00 o 52.00 363.00 594.00 728.50 4136.50
1958 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
1959 685.74 b 614.88 c 489.80 a 245.00 307.33 b 54.00 4.13 a 6.50 110.50 208.50 545.50 650.50 f 3271.88
1960 813.50 613.00 431.00 402.50 284.00 5.00 0.00 19.00 21.00 255.50 577.50 705.50 4127.50
1961 683.00 546.50 572.00 345.00 284.00 39.00 16.50 2.58 a 72.50 278.50 603.46 d 769.00 4212.04
1962 769.50 599.00 613.00 272.50 272.50 50.00 0.00 13.00 45.50 297.50 554.50 665.50 4152.50
1963 820.00 406.00 615.50 537.00 204.00 116.50 46.00 35.50 51.50 265.00 586.50 736.50 4420.00
1964 822.00 620.50 626.00 431.50 0.00 z 124.00 16.00 14.00 113.50 223.00 649.00 684.00 4323.50
1965 734.00 581.00 485.27 e 415.00 275.00 110.00 10.50 10.52 c 95.00 207.00 304.00 i 604.50 h 2923.29
1966 787.50 665.50 523.50 272.00 138.00 115.00 31.00 f 21.00 62.14 b 289.00 451.67 c 570.00 f 3325.31
1967 734.18 a 532.00 c 636.00 612.41 a 221.28 b 77.00 0.00 0.00 a 7.76 a 305.00 497.22 c 698.50 f 3622.85
1968 824.50 447.00 497.55 a 385.00 234.64 b 64.00 0.50 53.73 a 76.50 329.24 b 570.56 c 866.00 4349.22
1969 824.50 701.00 545.37 d 383.89 c 149.50 45.50 4.50 12.00 47.00 413.50 417.50 f 0.00 z 3126.76
1970 0.00 z 553.84 c 494.28 d 505.00 196.33 a 71.00 0.00 a 3.50 78.62 a 312.07 a 471.96 b 755.92 e 3442.53
1971 758.97 b 596.00 597.00 438.50 259.00 103.00 18.50 11.50 102.50 405.50 591.72 a 859.00 4741.19
1972 798.00 590.50 418.50 420.50 196.00 65.00 4.00 22.00 112.76 a 337.50 602.50 966.00 4533.26
1973 835.00 528.00 606.00 0.00 z 0.00 z 51.00 3.32 c 13.00 54.50 302.00 547.00 657.50 3597.32
1974 742.45 a 633.50 533.50 415.00 218.00 32.50 33.00 0.00 z 0.00 z 275.38 a 594.00 741.42 a 4218.75
1975 792.00 613.50 587.93 b 513.62 a 216.48 a 61.55 a 24.50 h 29.50 11.50 359.50 633.60 e 742.97 a 4562.15
1976 763.50 580.56 c 0.00 z 448.00 148.00 88.50 6.00 36.00 27.00 168.50 435.00 490.50 i 2701.06
1977 736.50 492.00 0.00 z 311.00 349.50 12.50 5.00 3.00 61.50 207.00 540.50 607.00 3325.50
1978 573.50 490.50 364.00 432.50 199.50 31.50 7.50 19.00 82.24 a 119.00 591.50 804.00 3714.74
1979 754.50 603.00 447.50 398.50 156.50 35.50 10.50 7.00 2.50 198.50 545.00 679.50 3838.50
1980 642.00 475.39 a 555.50 343.50 227.00 142.00 18.50 0.00 40.50 219.14 b 513.10 a 0.00 z 3176.63
1981 640.00 488.00 519.50 341.00 194.50 36.00 2.50 2.00 37.00 311.50 443.50 555.50 3571.00
1982 820.50 548.50 612.50 468.00 161.50 0.00 z 16.00 0.50 80.00 271.00 614.00 733.00 4325.50
1983 675.00 536.00 536.50 481.00 192.50 41.50 34.50 10.00 43.50 197.00 604.50 664.50 4016.50
1984 671.00 616.50 473.50 457.00 162.00 51.00 0.00 0.50 36.50 359.50 557.50 753.50 4138.50
1985 700.00 500.00 598.00 229.50 225.50 27.50 0.50 4.00 108.00 0.00 z 0.00 z 671.50 3064.50
1986 551.50 447.00 381.00 327.50 0.00 z 26.50 4.50 0.00 174.00 217.00 525.50 680.00 3334.50
1987 743.00 529.50 524.50 249.50 140.50 16.50 31.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 2234.50
1988 0.00 z 486.00 428.50 307.00 257.00 103.00 2.50 2.00 37.00 79.50 531.35 d 730.00 2963.85
1989 716.50 640.00 467.00 225.00 192.50 21.00 9.50 8.50 32.50 239.50 465.00 702.50 3719.50
1990 715.50 659.50 437.50 171.50 240.00 51.00 1.50 9.00 20.50 182.00 588.00 883.00 3959.00
1991 688.50 403.50 614.00 405.50 270.50 71.50 0.00 5.00 1.50 151.00 470.00 752.50 3833.50
1992 696.00 468.50 386.50 240.00 44.00 56.50 0.00 2.00 10.00 140.00 528.50 792.00 3364.00
1993 765.00 585.00 355.50 376.00 190.50 89.00 9.50 2.00 46.00 173.50 605.00 763.50 3960.50
1994 673.00 608.00 417.50 325.50 165.50 66.50 0.00 2.50 38.50 285.00 688.50 774.50 4045.00
1995 572.00 416.00 536.50 398.00 192.50 109.00 8.50 6.50 30.00 199.50 376.50 587.00 3432.00
1996 657.00 475.50 421.50 330.50 210.00 41.00 1.00 0.50 36.50 257.00 485.00 622.00 3537.50
1997 659.00 535.00 422.50 342.00 92.00 53.00 5.00 2.50 48.00 285.00 434.00 735.00 3613.00
1998 626.50 592.00 487.50 409.50 358.00 32.50 1.00 0.00 46.00 309.00 550.00 811.00 4223.00
1999 733.50 634.00 581.50 378.50 256.00 92.50 17.57 a 14.50 11.50 210.50 452.50 743.50 4126.07
2000 668.50 514.00 467.00 285.50 223.50 52.00 16.53 a 7.75 a 59.50 260.50 610.00 718.00 3882.78
2001 775.00 604.50 401.00 427.50 87.00 69.00 0.00 j 3.50 27.50 173.00 487.50 677.50 3733.00
2002 726.50 476.50 525.50 310.00 243.50 32.50 0.00 16.00 59.00 283.50 474.50 671.00 3818.50
2003 536.00 540.00 250.00 n 518.50 211.00 g 27.50 1.50 0.50 29.00 178.00 594.50 353.50 n 2425.50
2004 696.00 569.50 317.00 307.00 162.00 27.50 0.00 1.50 55.50 276.50 556.03 a 672.50 3641.03
2005 695.00 411.00 f 399.00 393.00 192.50 128.00 0.00 0.00 j 75.50 266.00 549.50 642.50 3341.00
2006 671.00 534.00 458.50 i 378.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1583.50
Period of Record Statistics
MEAN 731.29 555.95 508.88 367.70 207.65 63.58 7.57 9.23 52.20 250.75 534.35 724.98 3966.16
S.D. 87.18 73.97 81.71 91.74 64.97 35.59 10.51 10.90 34.48 70.91 68.60 81.37 318.68
SKEW 0.17 -0.03 -0.37 0.25 0.20 0.63 1.80 1.92 0.98 -0.06 -0.27 0.43 0.24
MAX 963.50 716.50 636.00 612.41 363.00 150.00 46.00 53.73 174.00 413.50 688.50 966.00 4741.19
MIN 536.00 403.50 317.00 171.50 44.00 5.00 0.00 0.00 1.50 79.50 376.50 555.50 3364.00
NO YRS 54 56 53 56 51 54 52 54 55 54 53 48 31