POINT ARENA, CALIFORNIA

Monthly Total Heating Degree Days

(047009)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 198804
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 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1949 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
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 0.00 z 0.00
1951 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
1952 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
1953 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
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 0.00 z 0.00 z 0.00 z 0.00
1955 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
1956 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
1957 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 79.00 j 230.50 395.50 482.50 1108.50
1958 454.00 335.00 483.00 368.50 261.00 109.00 165.00 186.50 134.00 273.83 a 348.50 387.50 3505.83
1959 453.12 a 482.50 429.00 358.50 337.00 164.50 i 212.00 195.50 183.00 236.00 395.00 501.00 3782.62
1960 538.00 468.00 431.50 394.00 339.00 248.50 265.50 267.50 272.50 294.50 420.00 493.00 4432.00
1961 491.50 410.50 468.00 406.00 346.00 210.50 213.50 178.50 217.00 323.50 434.00 567.00 4266.00
1962 576.50 481.50 526.50 401.00 381.00 329.50 300.50 224.00 268.50 310.00 393.50 500.50 4693.00
1963 594.50 314.50 491.00 438.50 333.00 309.00 242.50 246.00 141.50 240.00 377.00 472.50 4200.00
1964 570.50 488.50 571.50 507.50 454.50 279.50 260.00 213.38 a 283.50 280.00 401.50 475.00 4785.38
1965 494.50 484.00 464.50 413.28 a 428.50 336.50 281.50 157.50 250.34 a 188.58 a 307.00 502.00 4308.20
1966 523.50 485.52 c 489.36 c 402.86 b 389.57 a 251.50 234.00 256.61 d 161.00 234.00 373.39 b 444.33 a 4245.64
1967 486.50 434.50 499.10 a 527.59 a 359.50 239.00 f 256.50 181.50 h 117.50 195.00 287.59 a 542.00 3705.77
1968 533.31 d 364.50 421.50 427.50 248.00 f 256.00 224.00 91.50 f 161.38 a 292.00 403.93 b 530.62 a 3614.74
1969 556.50 486.50 465.50 406.50 351.00 237.00 230.50 244.00 200.50 250.00 321.00 379.00 4128.00
1970 418.50 a 264.50 g 418.50 445.00 321.50 368.04 b 310.55 c 256.50 201.67 c 281.00 322.00 505.50 3848.76
1971 547.84 b 451.11 a 493.00 483.00 366.50 271.50 241.50 128.43 c 132.69 d 289.00 g 259.00 l 482.00 f 3115.58
1972 579.50 439.50 396.00 418.00 374.00 271.03 a 177.00 160.00 220.00 264.00 372.00 536.00 4207.03
1973 534.75 a 347.00 489.50 324.50 f 354.00 0.00 z 0.00 z 0.00 z 105.50 l 0.00 z 0.00 z 0.00 z 1725.25
1974 0.00 z 0.00 z 0.00 z 424.50 376.50 306.00 224.50 242.00 209.00 347.50 458.50 559.00 3147.50
1975 613.50 513.50 489.00 522.50 391.50 304.66 a 253.88 b 260.50 256.50 367.35 a 513.50 574.00 5060.38
1976 636.00 541.00 585.00 489.00 373.00 309.00 201.00 193.00 200.00 294.50 349.00 561.00 4731.50
1977 575.50 421.00 530.00 432.50 371.50 263.00 261.00 158.00 210.50 323.00 421.00 442.02 b 4409.02
1978 418.00 384.00 287.50 412.00 336.50 228.50 235.08 a 200.00 168.50 290.00 503.00 656.68 a 4119.77
1979 570.00 451.00 437.50 373.00 328.00 299.48 a 198.00 180.00 87.00 214.93 a 400.50 467.50 4006.92
1980 497.03 a 363.54 a 460.00 379.00 367.50 269.50 220.50 250.00 215.00 316.50 402.50 482.00 4223.07
1981 417.50 0.00 z 448.50 0.00 z 0.00 z 218.50 0.00 z 197.00 200.00 334.28 a 331.00 436.50 2583.28
1982 608.00 436.50 500.00 437.50 365.50 272.00 217.50 172.00 194.50 273.00 425.50 531.00 4433.00
1983 482.00 345.50 387.00 417.50 304.50 217.00 162.50 120.00 136.50 205.00 384.50 432.00 3594.00
1984 480.00 496.00 394.00 420.50 311.50 289.50 212.00 180.00 159.50 338.00 428.50 580.50 4290.00
1985 593.00 488.00 523.00 376.50 354.50 209.50 190.50 209.00 197.50 307.00 545.00 541.00 4534.50
1986 415.00 359.50 365.50 394.00 348.50 187.00 236.00 203.50 256.00 292.50 402.50 498.00 3958.00
1987 561.00 425.50 443.50 329.00 273.50 252.50 177.00 188.00 217.50 228.00 383.00 520.50 3999.00
1988 513.50 438.50 467.00 385.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1804.00
Period of Record Statistics
MEAN 524.44 433.45 461.83 420.35 353.52 263.10 228.71 202.50 194.93 276.71 396.55 503.45 4278.65
S.D. 63.48 60.84 61.04 47.88 40.19 52.92 37.46 40.55 49.40 47.51 58.96 59.90 362.53
SKEW -0.26 -0.36 -0.49 0.68 0.03 -0.63 0.20 -0.10 -0.13 -0.13 0.54 0.09 -0.07
MAX 636.00 541.00 585.00 527.59 454.50 368.04 310.55 267.50 283.50 367.35 545.00 656.68 5060.38
MIN 415.00 314.50 287.50 329.00 261.00 109.00 162.50 120.00 87.00 188.58 287.59 379.00 3505.83
NO YRS 30 28 30 29 28 27 28 27 29 29 29 29 22