PLACERVILLE IFG, CALIFORNIA

Monthly Total Heating Degree Days

(046962)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 199112
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
1955 0.00 z 602.50 490.00 550.00 232.50 73.50 21.50 0.00 36.00 110.50 459.50 638.17 b 3214.17
1956 696.00 674.50 489.50 401.50 214.50 63.00 3.00 0.00 13.00 270.50 285.00 496.00 3606.50
1957 781.72 a 483.50 535.50 360.50 260.83 b 34.66 a 0.00 b 13.00 41.50 276.93 a 494.00 540.00 3822.13
1958 611.50 486.64 c 657.64 c 367.00 103.00 80.00 9.00 0.00 21.00 63.00 342.50 312.00 3053.28
1959 569.50 617.50 365.00 161.50 249.00 12.50 0.00 18.50 74.00 92.48 a 204.00 481.00 2844.98
1960 743.50 606.00 449.50 398.50 253.00 0.50 0.00 2.50 3.50 141.57 a 488.00 563.00 3649.57
1961 455.50 496.00 574.00 332.00 317.00 45.00 8.50 0.00 44.00 203.10 b 451.00 659.50 3585.60
1962 602.00 613.00 664.00 220.00 259.50 33.50 0.00 7.50 11.00 161.00 358.50 474.00 3404.00
1963 643.00 334.50 588.00 613.89 c 228.00 75.50 2.00 6.00 25.50 200.00 492.50 501.00 3709.89
1964 715.00 509.50 599.00 387.00 308.00 124.00 4.00 1.00 40.50 71.00 563.50 639.00 3961.50
1965 617.00 467.00 520.91 c 470.50 211.00 108.50 2.00 0.00 69.00 58.00 459.50 674.00 3657.41
1966 682.50 601.48 a 470.00 176.11 c 108.00 42.50 6.00 9.00 31.00 87.50 417.00 588.50 3219.59
1967 567.50 406.50 590.50 727.50 200.00 113.50 0.00 0.00 0.00 71.00 307.50 725.00 3709.00
1968 635.00 413.50 425.50 263.50 183.42 a 23.50 0.00 48.00 22.00 155.50 455.50 742.50 3367.92
1969 655.00 685.50 520.50 364.00 96.00 48.00 0.00 0.00 10.50 252.50 288.00 580.50 3500.50
1970 587.00 411.50 462.00 446.90 a 102.00 72.00 0.00 0.00 20.00 183.50 407.78 c 761.50 3454.17
1971 633.00 505.50 517.50 385.50 309.47 b 56.00 0.00 1.00 75.00 303.00 444.00 818.40 a 4048.37
1972 666.50 461.00 300.00 379.82 b 147.00 29.00 5.00 11.50 43.00 234.00 543.50 746.50 3566.82
1973 731.50 506.00 629.50 269.00 81.50 40.00 g 1.00 0.50 25.50 147.77 a 597.00 615.35 a 3604.62
1974 665.50 522.00 528.50 388.00 147.00 17.50 39.00 0.00 0.00 117.50 398.00 631.00 3454.00
1975 548.50 586.50 613.59 b 558.50 156.00 40.50 6.50 14.50 0.00 260.29 b 474.00 503.00 3761.88
1976 520.00 491.00 520.00 425.00 48.50 62.00 0.00 52.00 30.50 69.50 208.93 b 382.00 2809.43
1977 591.50 377.00 590.00 172.00 387.00 20.00 1.00 1.00 56.00 74.50 341.50 501.00 3112.50
1978 554.50 510.46 b 356.00 435.50 131.50 10.50 7.00 7.00 81.50 58.50 512.00 689.00 3353.46
1979 713.50 591.50 467.00 371.00 127.50 15.50 1.50 5.00 0.00 0.00 z 454.00 388.03 b 3134.53
1980 535.50 433.00 0.00 z 291.50 229.18 c 85.50 5.00 0.00 12.50 133.00 304.82 b 337.50 2367.50
1981 429.00 409.00 522.00 272.50 127.74 b 6.50 0.00 0.00 18.00 236.00 391.50 528.11 c 2940.35
1982 697.00 468.50 643.50 400.00 77.00 70.00 20.00 0.00 86.00 209.00 549.50 643.50 3864.00
1983 509.50 523.00 599.50 521.50 199.00 24.50 11.00 0.50 22.00 53.00 536.00 648.00 3647.50
1984 458.50 520.50 386.00 393.50 98.00 49.00 0.00 0.00 13.50 268.00 536.50 0.00 z 2723.50
1985 469.50 i 414.50 591.00 186.00 148.00 31.50 3.50 0.00 82.00 137.00 0.00 z 437.00 2030.50
1986 414.50 440.50 340.48 a 338.50 153.00 19.00 0.00 i 0.00 153.00 96.00 234.50 508.50 2697.98
1987 665.47 a 456.50 419.50 131.00 101.50 15.00 22.50 0.00 d 3.50 51.50 487.00 783.50 3136.97
1988 585.50 338.50 339.50 259.00 192.00 80.00 0.00 0.00 19.50 31.00 529.50 655.13 a 3029.63
1989 631.50 629.50 484.50 186.21 a 170.00 14.50 0.00 3.00 60.50 184.00 260.50 444.00 3068.21
1990 632.50 597.00 378.72 a 240.00 249.50 63.50 1.50 4.50 3.00 62.00 381.00 749.17 a 3362.38
1991 476.50 249.50 414.00 m 276.50 i 281.00 44.00 0.00 0.00 z 2.50 146.50 328.50 508.50 2037.00
Period of Record Statistics
MEAN 606.33 498.38 503.67 356.79 186.14 47.34 5.01 5.72 33.78 146.39 416.28 580.36 3437.98
S.D. 92.26 98.91 99.92 134.80 79.77 31.67 8.43 11.92 33.14 79.14 107.00 130.28 335.15
SKEW -0.33 -0.18 -0.29 0.50 0.40 0.64 2.45 2.98 1.50 0.38 -0.37 -0.14 -0.20
MAX 781.72 685.50 664.00 727.50 387.00 124.00 39.00 52.00 153.00 303.00 597.00 818.40 4048.37
MIN 414.50 249.50 300.00 131.00 48.50 0.50 0.00 0.00 0.00 31.00 204.00 312.00 2809.43
NO YRS 35 37 35 36 37 36 36 36 37 36 36 36 29