CLEARLAKE 4 SE, CALIFORNIA

Monthly Total Heating Degree Days

(041806)

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
1954 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 68.50 y 462.00 703.00 1165.00
1955 773.00 613.00 533.00 490.00 165.50 30.00 2.00 0.00 41.00 192.00 497.50 600.50 3937.50
1956 656.50 649.00 480.00 361.00 176.50 25.50 0.00 0.00 26.00 265.50 495.00 732.00 3867.00
1957 848.50 495.00 478.00 313.00 216.50 8.50 0.00 3.50 19.50 263.00 0.00 z 0.00 z 2645.50
1958 0.00 z 0.00 z 639.50 363.00 95.00 43.00 3.50 0.00 a 18.10 a 96.00 k 385.80 e 549.50 2097.40
1959 209.50 u 367.00 j 371.00 172.50 175.00 5.50 0.00 11.50 62.50 94.60 b 424.82 b 475.50 i 1317.42
1960 624.50 f 452.00 f 272.50 h 157.00 r 81.00 q 0.00 s 0.00 z 1.00 p 5.00 210.00 269.50 o 627.00 842.00
1961 696.00 504.50 533.00 326.50 229.50 4.00 4.50 0.00 a 44.50 215.00 507.22 c 768.05 b 3832.77
1962 417.50 n 597.00 598.50 235.00 203.50 25.50 0.00 h 0.52 a 12.00 o 207.18 a 435.00 636.00 2938.20
1963 826.84 b 0.00 z 570.92 a 322.50 k 0.00 z 31.50 g 5.50 0.00 28.50 234.00 517.00 688.00 2870.76
1964 764.00 566.00 553.50 398.50 271.00 78.50 5.50 1.50 74.00 171.00 576.72 a 611.50 4071.72
1965 672.00 561.50 516.67 a 376.50 217.50 53.50 7.00 11.00 112.50 196.00 523.89 c 822.57 b 4070.62
1966 759.50 688.50 561.00 264.50 128.00 73.00 30.00 13.00 63.00 236.50 447.50 616.50 3881.00
1967 694.50 520.00 604.50 639.50 203.50 75.00 0.00 0.00 0.56 c 191.50 371.50 721.00 4021.56
1968 607.00 f 472.50 493.50 346.67 c 207.00 39.00 0.00 35.00 0.00 z 0.00 z 502.50 780.50 2876.67
1969 770.00 682.50 555.00 391.50 105.00 28.00 0.00 0.00 8.50 264.05 c 459.50 583.50 3847.55
1970 620.00 472.00 469.00 468.50 135.88 a 46.00 0.00 1.50 50.00 256.00 431.50 759.00 3709.38
1971 688.50 566.00 570.00 408.50 209.00 54.00 1.00 0.00 74.00 352.00 541.50 830.00 4294.50
1972 764.00 569.00 402.00 372.50 141.50 28.50 0.00 8.50 68.50 267.50 568.50 869.50 4060.00
1973 785.00 532.50 575.00 263.50 79.00 22.00 0.00 10.50 33.00 229.50 521.50 655.00 3706.50
1974 773.00 644.50 516.50 430.50 159.50 19.50 14.50 0.00 5.00 179.50 550.00 710.50 4003.00
1975 749.00 604.00 570.00 535.00 172.00 32.00 30.50 8.50 5.50 284.00 555.00 658.50 4204.00
1976 726.00 567.00 556.00 455.00 61.50 58.00 5.00 34.00 82.00 168.50 381.50 704.00 3798.50
1977 735.50 473.50 551.00 221.50 301.50 22.50 0.50 6.50 g 86.00 198.00 489.50 621.50 3701.00
1978 620.50 511.50 385.00 428.00 144.50 28.00 4.00 10.00 79.50 150.00 570.50 821.50 3753.00
1979 767.00 616.00 464.00 352.00 122.00 15.50 0.00 7.00 16.00 214.00 541.00 674.50 3789.00
1980 659.00 493.50 531.50 329.00 193.50 85.34 a 5.50 0.00 44.00 246.00 475.00 635.50 3697.84
1981 636.50 508.50 526.50 295.00 126.00 16.00 0.00 1.50 40.50 312.00 429.00 595.50 3487.00
1982 816.00 558.00 615.00 436.00 116.50 59.50 8.00 2.50 82.50 275.00 593.00 720.00 4282.00
1983 681.00 531.00 543.00 498.50 235.50 29.50 35.00 0.00 38.50 206.50 586.50 618.50 4003.50
1984 583.50 571.50 380.00 397.00 140.00 40.50 4.00 5.00 25.00 304.50 548.50 741.50 3741.00
1985 660.50 493.00 589.00 194.50 189.50 35.00 1.50 9.50 91.50 0.00 z 0.00 z 0.00 z 2264.00
1986 0.00 z 0.00 z 89.50 r 303.50 186.00 7.50 0.00 0.00 188.50 189.00 407.00 661.00 1942.50
1987 706.00 537.00 555.50 233.50 118.50 16.00 21.50 4.00 13.00 135.00 524.50 691.00 3555.50
1988 683.50 452.50 428.50 291.50 227.50 96.50 0.00 2.50 32.50 108.00 505.50 669.50 3498.00
1989 677.50 661.00 514.50 233.50 177.00 20.50 3.50 2.50 81.50 263.50 448.50 621.00 3704.50
1990 673.00 626.50 460.50 236.00 207.00 35.00 3.50 14.00 9.50 177.50 492.00 847.50 3782.00
1991 652.50 429.00 651.50 412.00 254.00 53.50 0.00 8.00 7.50 138.00 422.50 642.00 3670.50
1992 688.00 483.50 0.00 z 250.50 42.00 51.50 8.50 0.00 15.50 121.00 481.00 719.00 2860.50
1993 734.50 613.50 387.00 373.00 229.50 96.00 0.50 5.00 42.00 156.00 497.50 663.50 3798.00
1994 613.00 607.00 388.00 302.50 164.00 50.00 0.00 0.00 29.00 247.00 661.00 750.00 3811.50
1995 577.63 a 415.50 543.50 394.00 207.50 78.50 0.00 4.00 10.50 128.00 315.00 518.50 3192.63
1996 586.00 442.00 437.00 347.00 249.50 22.50 0.00 10.50 66.50 230.00 383.33 c 582.50 3356.83
1997 612.50 477.50 401.50 320.00 88.50 37.00 9.00 1.00 30.50 250.50 437.00 647.50 3312.50
1998 612.00 600.50 505.00 433.00 412.50 58.50 0.00 0.00 50.00 286.00 521.00 738.50 4217.00
1999 667.50 640.00 643.50 413.79 a 214.42 a 80.00 13.00 13.00 12.00 144.00 438.50 622.00 3901.71
2000 648.33 b 564.46 a 504.00 289.66 a 200.47 a 41.50 5.68 a 3.50 66.00 254.00 573.21 b 645.00 3795.81
2001 735.39 d 606.50 429.02 c 421.50 45.98 a 25.00 0.00 0.00 9.50 109.50 0.00 z 647.90 a 3030.29
2002 716.50 528.00 555.50 323.50 209.50 2.50 0.00 1.00 24.50 186.00 412.00 633.00 3592.00
2003 512.00 565.50 457.00 523.50 216.50 12.50 0.00 6.00 7.00 109.50 570.00 675.50 3655.00
2004 681.50 567.00 304.50 293.50 155.50 18.00 0.00 0.00 40.50 251.50 486.00 598.00 3396.00
2005 734.00 490.00 446.50 419.50 220.00 111.72 a 0.00 a 0.00 52.50 223.00 433.50 613.00 3743.72
2006 628.50 531.00 711.00 417.93 a 126.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2414.93
Period of Record Statistics
MEAN 692.73 551.04 511.33 359.92 177.46 40.72 4.75 5.09 43.14 210.22 487.45 678.38 3795.95
S.D. 71.89 68.07 84.66 95.28 67.00 26.75 8.30 7.55 35.40 60.11 69.88 78.73 258.81
SKEW -0.04 0.06 -0.17 0.35 0.51 0.77 2.38 2.49 1.56 -0.05 -0.06 0.57 -0.14
MAX 848.50 688.50 711.00 639.50 412.50 111.72 35.00 35.00 188.50 352.00 661.00 869.50 4294.50
MIN 512.00 415.50 304.50 172.50 42.00 2.50 0.00 0.00 0.56 94.60 315.00 518.50 3192.63
NO YRS 46 47 49 50 50 49 49 49 49 48 48 49 39