SAN LUIS DAM, CALIFORNIA

Monthly Total Heating Degree Days

(047846)

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
1963 247.50 t 254.92 d 405.00 326.00 73.50 5.00 0.00 0.00 1.50 65.50 391.00 768.00 2290.42
1964 651.00 460.00 362.00 199.50 114.50 21.00 0.50 1.50 22.50 44.00 426.50 464.50 2767.50
1965 592.50 436.50 328.50 236.50 72.00 36.50 0.00 0.00 9.50 17.50 278.00 714.50 2722.00
1966 630.00 470.00 291.00 70.00 54.00 15.50 0.00 0.00 h 1.50 42.00 244.00 574.50 2392.50
1967 608.00 480.00 355.00 413.50 111.27 c 65.69 a 0.00 0.00 0.00 10.00 198.50 629.00 2870.96
1968 659.00 289.00 224.00 130.86 a 90.42 a 23.00 0.00 0.50 9.00 48.00 341.50 620.00 2435.28
1969 624.50 498.81 a 353.00 191.38 a 55.00 30.50 0.00 0.00 3.00 125.50 308.00 482.00 2671.69
1970 473.50 369.19 a 277.50 233.50 78.50 34.00 0.00 0.00 7.50 115.50 240.00 565.50 2394.69
1971 622.50 483.50 342.50 236.00 125.00 39.50 0.00 0.00 14.00 178.00 364.50 656.50 3062.00
1972 765.50 400.00 130.50 145.50 70.00 5.00 0.00 0.00 2.00 94.50 418.50 714.50 2746.00
1973 616.00 388.00 405.50 142.00 36.50 10.50 0.00 0.00 0.00 94.50 330.50 547.00 2570.50
1974 579.00 449.00 323.00 206.50 86.00 5.00 1.00 0.00 0.00 42.50 333.50 630.00 2655.50
1975 675.50 418.00 397.50 326.50 78.00 26.00 4.50 1.00 0.00 117.00 369.50 592.00 3005.50
1976 576.50 395.50 315.00 218.00 39.00 21.50 0.00 0.00 8.50 44.00 273.50 574.00 2465.50
1977 688.00 347.50 359.50 65.00 161.50 22.50 2.00 0.00 6.50 41.50 244.00 421.08 a 2359.08
1978 454.50 384.00 195.50 246.50 42.00 6.00 0.50 0.00 4.00 33.50 406.50 706.50 2479.50
1979 630.50 436.00 311.00 157.50 57.00 0.00 c 1.55 a 4.00 0.00 61.00 326.50 509.00 2494.05
1980 497.00 376.50 346.50 163.00 120.00 35.00 0.00 18.00 5.00 56.00 252.50 540.50 2410.00
1981 505.00 368.67 a 344.50 146.00 42.88 a 0.00 0.00 0.00 0.00 97.50 240.00 477.50 2222.05
1982 683.00 382.50 382.00 214.50 86.50 31.00 5.50 1.50 12.50 64.00 432.00 568.00 2863.00
1983 677.50 372.00 311.50 267.00 86.50 9.50 0.00 0.00 6.00 17.50 308.00 422.50 2478.00
1984 597.00 407.50 185.00 205.50 48.00 26.00 0.00 0.00 0.00 103.50 359.00 617.00 2548.50
1985 719.00 382.00 371.50 74.00 47.50 13.50 0.00 0.00 7.00 83.50 387.00 740.00 2825.00
1986 431.50 297.00 201.50 154.50 49.00 0.00 0.50 0.00 23.50 42.00 228.00 582.00 2009.50
1987 609.50 351.00 304.00 54.50 58.50 0.50 5.50 1.00 0.50 15.50 319.50 556.00 2276.00
1988 568.00 315.50 190.00 131.50 82.50 19.50 0.00 0.00 0.00 39.50 265.00 602.00 2213.50
1989 660.00 482.00 218.00 79.50 52.50 5.50 0.00 0.00 7.00 99.00 277.50 657.00 2538.00
1990 567.50 474.50 239.50 52.50 47.00 11.00 0.00 0.00 0.00 8.00 289.50 712.00 2401.50
1991 553.50 272.00 377.50 199.50 87.50 6.00 0.00 1.00 1.00 72.50 243.50 590.50 2404.50
1992 668.50 315.00 230.00 53.00 2.50 3.00 0.00 0.00 0.00 14.50 276.00 603.00 2165.50
1993 615.87 a 444.50 219.50 153.00 46.00 11.50 0.00 0.00 2.50 18.00 359.00 640.00 2509.87
1994 601.00 484.50 244.50 129.50 73.00 0.50 1.00 0.00 0.50 76.00 473.50 650.50 2734.50
1995 440.00 371.00 337.00 174.50 106.50 19.00 0.00 0.00 0.00 19.00 151.50 441.00 2059.50
1996 522.00 325.50 251.50 124.00 21.00 16.00 0.00 0.00 0.00 122.00 288.50 484.50 2155.00
1997 521.50 356.50 195.00 82.00 4.00 0.00 1.00 0.00 0.00 65.00 237.50 621.00 2083.50
1998 489.50 409.50 291.50 241.50 149.50 30.00 2.00 0.00 12.00 77.00 305.50 649.50 2657.50
1999 630.00 427.00 376.00 221.00 86.50 27.50 0.00 0.00 0.00 21.18 a 240.00 519.50 2548.68
2000 455.50 327.00 257.00 95.50 38.50 3.00 2.50 0.00 2.50 86.50 453.50 508.00 2229.50
2001 589.50 430.50 208.50 215.00 2.00 0.00 0.00 0.00 0.00 16.00 224.50 534.00 2220.00
2002 624.50 354.50 317.00 143.00 58.00 2.00 0.00 0.00 2.00 80.50 303.50 486.00 2371.00
2003 482.00 413.00 234.50 240.50 68.00 11.00 0.00 0.00 0.00 9.00 372.50 474.50 2305.00
2004 568.00 385.50 120.00 96.50 16.00 1.00 0.00 0.00 12.00 117.00 379.00 546.50 2241.50
2005 574.00 327.50 234.50 160.00 24.50 2.50 0.00 0.00 0.00 41.00 186.50 440.00 1990.50
2006 472.50 359.50 437.50 213.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1482.50
Period of Record Statistics
MEAN 585.33 390.27 290.94 173.38 66.25 15.16 0.65 0.68 4.27 61.29 310.40 577.48 2467.34
S.D. 80.41 61.60 78.32 79.18 36.53 14.43 1.40 2.83 5.91 39.95 75.98 89.78 268.05
SKEW -0.17 -0.13 -0.22 0.59 0.46 1.15 2.51 5.69 1.68 0.64 0.20 0.13 0.23
MAX 765.50 498.81 437.50 413.50 161.50 65.69 5.50 18.00 23.50 178.00 473.50 768.00 3062.00
MIN 431.50 254.92 120.00 52.50 2.00 0.00 0.00 0.00 0.00 8.00 151.50 421.08 1990.50
NO YRS 43 44 44 44 43 43 43 42 43 43 43 43 41