MITCHELL CAVERNS, CALIFORNIA

Monthly Total Heating Degree Days

(045721)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201104
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
1958 0.00 z 0.00 z 355.50 l 285.00 29.00 0.58 d 0.00 0.00 8.50 63.50 292.76 a 318.00 997.34
1959 475.16 b 573.00 250.00 55.00 62.50 0.00 0.00 0.00 15.50 81.50 226.50 501.00 2240.16
1960 753.50 626.00 236.00 156.50 63.00 0.00 0.00 0.00 0.00 108.50 378.00 551.50 2873.00
1961 447.00 420.50 445.00 178.00 72.00 11.00 0.00 0.00 14.50 150.00 464.50 618.50 2821.00
1962 553.00 506.00 544.50 43.39 b 119.35 a 13.00 0.00 0.00 a 0.00 54.77 a 214.50 424.00 2472.51
1963 628.00 271.50 437.50 324.31 a 27.00 10.86 a 0.00 0.00 10.00 63.00 329.48 a 434.00 a 2535.66
1964 661.33 a 535.92 d 490.83 a 266.67 c 148.80 a 14.44 c 0.00 0.00 a 0.00 a 19.63 a 476.25 b 560.07 a 3173.95
1965 483.17 b 410.67 d 483.17 b 351.21 a 92.50 f 3.50 g 0.00 a 0.00 a 32.59 a 32.50 334.50 621.00 2748.80
1966 669.17 b 595.50 311.00 86.25 b 22.00 0.00 a 0.00 a 0.00 0.00 45.97 b 312.00 534.50 2576.39
1967 521.50 348.83 d 336.57 c 475.56 c 82.67 d 12.32 b 0.00 0.00 0.00 4.81 b 224.50 722.00 2728.76
1968 569.37 a 324.50 344.62 a 219.50 54.25 a 5.50 0.00 0.00 5.00 36.50 319.00 680.50 2558.73
1969 536.50 634.00 478.00 166.00 75.50 6.50 0.00 0.00 0.00 153.50 324.50 469.50 2844.00
1970 587.00 406.50 423.50 323.50 26.00 11.50 0.00 b 0.00 b 0.00 100.50 311.00 630.00 2819.50
1971 563.00 434.50 326.50 248.50 158.00 23.57 b 0.00 0.00 29.50 268.15 a 382.76 a 809.50 3243.98
1972 341.00 l 94.50 w 0.00 z 51.50 j 39.00 f 0.00 b 0.00 a 0.00 a 2.14 b 234.57 a 510.00 b 719.72 a 1466.43
1973 738.46 c 531.46 b 657.50 292.78 c 41.00 0.00 0.00 0.00 1.50 73.37 a 397.50 b 502.31 d 3235.89
1974 706.50 468.72 c 385.95 a 202.22 c 39.55 b 0.00 0.00 a 0.00 0.00 b 89.90 a 301.50 648.50 2842.84
1975 541.50 525.00 503.23 a 419.00 76.00 2.00 0.00 0.00 0.00 140.53 a 333.50 465.53 b 3006.30
1976 466.50 443.50 440.50 301.50 34.00 11.38 a 0.00 0.00 8.00 94.00 208.50 491.50 2499.38
1977 625.00 336.50 549.22 a 138.00 228.50 2.50 0.00 0.00 6.00 30.50 219.00 415.50 2550.72
1978 639.50 501.00 356.50 309.00 89.00 0.00 0.00 0.00 17.00 67.50 432.00 708.50 3120.00
1979 853.50 541.00 483.00 176.00 53.50 9.00 0.00 a 0.00 0.00 82.50 425.00 439.00 3062.50
1980 572.00 403.00 519.00 212.50 167.50 0.00 z 0.00 0.00 a 6.50 160.00 f 269.00 340.00 2489.50
1981 466.00 405.00 475.69 b 130.50 41.85 a 0.00 a 0.00 0.00 0.00 184.45 a 261.50 446.50 2411.49
1982 637.00 448.50 508.00 230.00 49.00 0.00 0.00 0.00 46.50 132.50 474.50 668.00 3194.00
1983 519.00 496.00 494.50 425.00 91.00 6.00 0.00 3.00 11.00 69.50 416.50 564.50 3096.00
1984 515.50 473.50 319.50 266.00 14.50 4.00 0.00 0.00 0.00 235.50 448.50 711.50 2988.50
1985 649.00 545.50 492.50 123.00 24.50 9.50 0.00 0.00 51.00 92.00 480.50 508.00 2975.50
1986 387.00 437.50 261.50 216.50 62.00 0.00 0.00 0.00 77.00 130.50 344.50 579.50 2496.00
1987 666.50 514.00 487.00 110.50 61.00 0.00 0.00 0.00 0.00 66.00 453.50 777.50 3136.00
1988 621.50 410.50 367.00 226.50 127.00 14.50 0.00 0.00 9.00 1.00 408.00 643.00 2828.00
1989 677.50 533.50 294.00 93.00 65.00 0.00 0.00 0.00 9.50 116.00 223.50 440.50 2452.50
1990 615.00 542.50 320.50 143.00 51.00 5.50 0.00 z 0.00 0.50 41.00 337.00 718.00 2774.00
1991 611.00 284.50 600.00 260.00 105.50 9.00 0.00 0.00 0.00 131.50 372.50 575.50 2949.50
1992 581.00 454.50 452.50 99.50 2.50 0.00 z 0.00 0.00 0.00 58.00 447.50 767.00 2862.50
1993 705.00 569.00 308.00 143.50 8.00 26.00 0.00 0.00 39.00 236.50 430.00 562.00 3027.00
1994 480.50 574.00 257.00 188.00 68.00 0.00 0.00 0.00 k 3.00 110.50 586.00 586.50 2853.50
1995 672.50 276.50 442.00 251.00 134.50 41.50 0.00 0.00 2.50 41.00 131.00 488.50 2481.00
1996 505.50 389.00 322.50 122.00 33.00 0.00 0.00 0.00 2.50 208.00 312.00 545.00 2439.50
1997 577.50 455.50 165.00 211.00 0.50 4.50 0.00 0.00 0.00 109.50 344.50 632.50 2500.50
1998 544.00 625.00 440.00 334.00 145.00 21.50 0.00 0.00 10.00 122.00 347.50 550.00 3139.00
1999 485.00 438.50 381.00 397.50 67.00 46.50 0.00 0.00 a 2.07 a 20.67 a 197.14 b 512.03 b 2547.41
2000 479.97 b 483.16 a 413.16 b 108.62 a 36.00 2.14 b 0.00 0.00 0.00 z 196.00 493.00 418.50 2630.54
2001 640.15 a 615.44 c 345.50 298.50 24.50 0.00 0.00 0.00 z 0.00 7.00 281.00 651.55 c 2863.64
2002 579.50 367.11 a 433.00 61.00 q 71.82 a 0.00 0.00 0.00 3.00 125.50 250.50 637.50 2467.93
2003 315.00 513.50 385.50 344.50 112.00 0.00 0.00 0.00 0.00 11.00 507.00 586.00 2774.50
2004 575.50 648.50 158.50 213.50 19.50 5.00 0.00 0.00 16.50 211.50 513.50 608.50 2970.50
2005 641.50 561.22 e 445.00 0.00 z 0.00 z 1.00 h 0.00 0.00 0.00 95.50 232.00 479.00 2454.22
2006 540.50 346.50 570.50 265.00 18.00 0.00 0.00 0.00 3.00 92.50 i 199.50 f 557.40 e 2300.90
2007 534.50 f 466.26 e 290.48 d 200.50 34.00 8.00 0.00 0.00 42.00 104.00 187.00 742.50 2074.74
2008 732.50 507.00 337.00 210.50 134.00 0.00 0.00 0.00 l 0.00 74.00 197.00 651.00 2843.00
2009 430.00 547.00 385.00 283.50 3.50 21.00 e 0.00 0.00 0.00 168.50 265.50 684.50 2788.50
2010 570.50 530.50 475.50 352.00 170.00 0.00 0.00 0.50 0.50 166.00 436.50 510.50 3212.50
2011 554.38 a 570.37 a 359.82 c 246.35 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1730.92
2012 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
Period of Record Statistics
MEAN 579.73 478.21 403.64 229.88 68.87 7.32 0.00 0.07 9.33 103.15 347.41 573.73 2810.59
S.D. 100.01 95.36 106.64 99.25 51.37 10.37 0.00 0.43 16.07 67.44 105.69 113.60 283.95
SKEW 0.04 -0.33 -0.12 0.29 0.99 2.05 0.00 6.60 2.36 0.60 0.09 -0.03 -0.11
MAX 853.50 648.50 657.50 475.56 228.50 46.50 0.00 3.00 77.00 268.15 586.00 809.50 3243.98
MIN 315.00 271.50 158.50 43.39 0.50 0.00 0.00 0.00 0.00 1.00 131.00 318.00 2240.16
NO YRS 51 52 52 51 50 49 52 50 52 51 52 53 39