GILROY, CALIFORNIA

Monthly Total Heating Degree Days

(043417)

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
1957 0.00 z 0.00 z 0.00 z 0.00 z 46.50 v 14.50 h 5.50 5.50 6.00 131.46 d 375.50 516.67 d 1040.63
1958 557.50 301.00 430.50 233.00 72.52 c 23.04 b 1.00 0.00 4.50 65.00 297.50 381.00 2366.55
1959 427.00 422.00 241.00 119.50 154.50 18.00 0.00 12.50 21.00 86.00 301.00 487.50 2290.00
1960 566.00 431.00 281.50 229.00 130.00 8.50 0.00 5.00 17.00 153.00 361.00 567.50 2749.50
1961 566.50 361.00 409.50 224.50 189.62 a 28.00 2.50 0.00 37.00 160.50 382.50 585.00 2946.62
1962 620.50 442.50 455.00 177.50 183.00 58.50 7.00 6.50 27.00 127.50 283.50 487.00 2875.50
1963 661.00 229.00 422.00 347.50 155.50 54.00 7.50 12.50 6.00 94.00 367.00 621.00 2977.00
1964 604.00 489.50 439.50 296.50 216.00 73.50 13.00 13.50 67.50 70.50 414.00 471.50 3169.00
1965 556.50 415.50 373.00 271.00 164.00 93.50 1.00 0.00 45.50 64.00 323.50 653.00 2960.50
1966 601.00 474.50 329.50 131.50 108.00 45.50 2.50 3.50 24.50 110.50 308.50 544.50 2684.00
1967 542.00 406.00 381.00 450.50 138.00 64.50 0.00 0.00 0.00 90.00 246.00 634.50 2952.50
1968 604.00 291.50 314.00 233.50 163.50 31.00 1.00 11.50 23.00 124.50 317.50 617.00 2732.00
1969 579.50 481.00 380.00 263.50 99.50 28.50 2.00 0.50 16.00 179.00 327.00 463.00 2819.50
1970 449.00 364.00 325.50 356.00 106.95 a 49.00 0.00 6.00 35.50 185.50 297.50 540.50 2715.45
1971 558.00 437.00 393.50 293.00 172.00 48.50 5.50 0.50 36.50 256.00 400.50 654.50 3255.50
1972 650.50 363.50 230.50 236.00 107.50 18.50 0.00 2.58 a 13.50 114.50 392.50 639.50 2769.08
1973 581.50 353.50 455.00 186.50 81.00 35.00 1.50 6.00 15.00 129.00 371.50 504.50 2720.00
1974 548.00 459.00 316.50 249.00 139.50 12.50 9.50 0.00 5.00 86.50 329.50 557.50 2712.50
1975 542.50 392.00 391.50 351.00 97.50 19.50 6.00 3.00 7.00 155.50 373.50 487.50 2826.50
1976 504.50 399.50 350.50 266.00 67.00 50.00 1.50 1.00 7.50 72.50 256.50 522.50 2499.00
1977 560.50 305.50 427.00 136.50 202.50 31.00 1.00 1.50 13.50 73.00 261.00 341.00 2354.00
1978 411.00 336.00 198.00 271.50 88.00 7.50 3.88 c 0.00 18.10 a 63.50 380.50 510.50 g 1777.98
1979 587.50 445.50 308.50 195.50 67.00 10.71 b 1.50 0.00 0.00 79.00 336.50 472.75 a 2504.46
1980 413.00 297.00 361.50 193.00 167.50 56.50 0.50 12.50 13.39 b 107.50 339.00 472.50 2433.89
1981 467.50 0.00 z 0.00 z 196.55 a 68.50 1.00 0.00 b 0.00 2.07 a 140.00 230.00 458.00 1563.62
1982 607.00 330.00 351.50 237.00 90.00 45.00 9.50 1.00 26.50 113.50 395.50 532.50 2739.00
1983 529.00 320.00 309.00 269.00 111.50 15.00 8.50 0.00 4.00 45.50 333.50 405.50 2350.50
1984 506.50 417.50 255.50 259.00 48.00 32.00 0.00 0.00 2.00 156.00 404.00 594.00 2674.50
1985 617.50 418.00 439.00 146.50 121.50 22.50 0.50 5.00 34.00 200.35 d 435.00 417.00 j 2439.85
1986 387.00 0.00 z 215.50 213.50 111.50 8.50 0.00 z 0.50 85.86 a 94.60 b 285.00 507.00 1908.97
1987 561.00 0.00 z 362.50 124.50 99.50 0.00 z 17.50 1.00 6.50 38.00 0.00 z 537.50 1748.00
1988 490.00 349.00 0.00 z 182.00 163.30 c 49.00 0.50 1.00 7.50 73.00 299.00 514.50 2128.80
1989 567.00 443.00 217.00 99.00 89.50 0.00 z 0.00 2.50 16.00 111.50 270.00 495.50 2311.00
1990 491.50 452.00 0.00 z 89.00 79.00 12.50 0.00 2.00 2.00 36.00 324.50 672.00 2160.50
1991 488.00 225.50 395.50 238.50 143.50 33.00 0.50 3.50 3.50 80.00 253.00 508.50 2373.00
1992 530.50 278.00 237.00 83.50 14.00 22.50 0.00 1.00 2.00 35.50 278.00 554.50 2036.50
1993 537.50 401.50 190.50 167.00 65.50 32.00 0.00 0.50 16.50 32.50 314.00 518.00 2275.50
1994 461.00 410.00 230.00 150.50 76.00 14.00 1.50 1.00 6.00 88.00 435.50 555.00 2428.50
1995 369.50 256.00 312.50 198.00 138.50 49.50 0.00 0.00 3.50 48.00 126.00 348.00 1849.50
1996 400.00 263.00 230.00 111.50 26.50 12.50 0.00 0.50 8.00 133.00 270.00 415.00 1870.00
1997 432.00 305.00 205.00 118.00 13.50 6.50 0.00 0.00 0.00 88.00 201.50 498.00 1867.50
1998 394.00 374.50 254.50 224.50 169.50 33.00 0.00 z 0.00 13.50 121.00 282.00 582.50 2449.00
1999 0.00 z 388.89 a 365.50 243.62 a 120.00 42.00 4.00 0.00 6.00 33.00 237.93 a 439.50 1880.44
2000 409.00 309.00 276.00 121.00 0.00 z 0.00 z 5.50 3.00 18.00 116.50 402.50 437.74 b 2098.24
2001 537.00 395.50 224.23 a 272.00 14.00 1.50 3.00 1.00 0.00 z 48.57 a 214.66 a 444.50 2155.96
2002 516.50 317.00 289.50 157.00 97.00 15.00 0.50 0.00 10.00 99.50 198.50 402.50 2103.00
2003 309.50 356.00 247.00 267.50 94.00 20.00 19.08 e 0.00 1.00 21.00 326.00 436.00 2097.08
2004 472.00 382.50 123.00 123.50 28.50 0.50 0.00 0.00 21.00 144.27 e 344.00 434.60 e 2073.87
2005 453.50 275.00 219.00 197.00 53.50 22.50 0.00 0.00 14.00 70.50 204.00 291.00 g 1509.00
2006 431.23 c 304.00 397.66 b 187.00 f 40.82 a 5.36 b 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1179.06
Period of Record Statistics
MEAN 513.68 366.69 316.55 212.51 107.24 29.58 3.07 2.60 16.03 100.94 314.73 511.15 2544.33
S.D. 80.86 69.36 85.23 77.80 51.73 20.83 4.55 3.86 17.08 48.95 68.89 80.89 372.24
SKEW -0.39 -0.19 -0.11 0.55 0.04 0.82 1.96 1.72 2.13 0.72 -0.36 0.05 -0.23
MAX 661.00 489.50 455.00 450.50 216.00 93.50 19.08 13.50 85.86 256.00 435.50 672.00 3255.50
MIN 309.50 225.50 123.00 83.50 13.50 0.50 0.00 0.00 0.00 21.00 126.00 341.00 1849.50
NO YRS 48 46 46 48 48 46 47 49 48 49 48 46 35