LOS GATOS, CALIFORNIA

Monthly Total Heating Degree Days

(045123)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1893 638.50 519.00 493.00 422.50 205.50 155.00 32.50 41.50 161.50 224.00 325.50 469.00 3687.50
1894 635.00 553.00 509.00 306.50 229.00 183.50 44.50 29.00 56.00 192.50 317.50 588.00 3643.50
1895 622.00 387.50 424.00 311.00 207.50 54.50 51.00 53.00 115.00 174.50 402.50 583.50 3386.00
1896 459.00 349.00 355.00 428.00 282.50 85.00 13.00 39.50 82.00 156.50 424.00 467.50 3141.00
1897 598.50 496.00 567.50 225.50 95.50 0.00 z 16.50 45.50 83.50 232.50 456.00 590.50 3407.50
1898 674.50 407.00 488.00 265.00 321.50 53.50 24.50 18.00 71.50 148.00 370.00 585.00 3426.50
1899 466.00 421.50 448.00 273.50 0.00 z 0.00 z 38.50 68.50 40.00 280.00 343.50 558.00 2937.50
1900 511.50 428.00 316.00 314.50 105.00 30.00 13.50 29.00 53.00 166.00 237.50 438.00 2642.00
1901 492.00 358.00 292.00 321.50 218.00 77.00 32.50 29.00 76.00 111.50 283.00 510.50 2801.00
1902 632.50 367.50 475.50 312.00 245.93 a 52.50 18.00 7.50 0.00 z 0.00 z 0.00 z 504.50 2615.93
1903 558.50 537.00 434.50 347.07 a 161.50 63.00 41.00 22.00 40.00 95.00 319.50 489.00 3108.07
1904 562.50 473.50 396.00 272.00 102.00 25.56 c 21.91 b 29.50 59.00 207.50 317.00 548.50 3014.97
1905 466.50 381.50 282.50 258.00 250.50 79.00 6.50 5.00 31.50 121.50 312.50 534.00 2729.00
1906 474.50 320.00 388.50 257.50 239.00 107.50 2.50 10.00 24.50 136.00 401.00 534.50 2895.50
1907 607.00 283.00 442.00 205.50 185.50 91.00 11.50 28.50 129.50 226.50 378.00 433.50 3021.50
1908 482.50 473.50 342.00 197.00 258.00 113.00 0.50 17.00 37.50 174.00 322.00 620.00 3037.00
1909 448.50 415.50 445.50 182.00 213.50 91.00 25.00 21.00 54.00 168.50 337.50 546.00 2948.00
1910 614.50 450.00 247.00 239.00 179.50 113.50 23.50 16.50 56.50 114.50 330.50 432.00 2817.00
1911 470.50 502.00 347.50 301.50 248.00 88.50 7.00 45.00 75.00 160.50 299.00 496.00 3040.50
1912 453.50 346.00 445.50 375.00 153.00 75.00 17.50 11.50 47.00 192.00 282.00 478.50 2876.50
1913 610.00 393.00 386.50 280.00 147.00 60.00 1.50 7.00 15.00 80.50 355.00 509.50 2845.00
1914 473.50 375.50 244.00 231.50 167.00 94.00 13.50 14.50 48.00 121.50 214.50 605.00 2602.50
1915 522.50 406.50 287.00 262.50 278.50 59.00 18.50 3.50 49.00 109.00 343.00 468.00 2807.00
1916 602.00 299.50 307.50 203.50 226.00 87.50 13.95 a 15.00 41.00 273.00 389.00 580.50 3038.45
1917 622.50 387.00 466.50 273.50 293.50 52.50 0.50 1.50 40.00 74.50 242.50 390.00 2844.50
1918 464.00 423.00 346.00 246.50 256.00 13.00 9.00 20.00 54.00 91.00 383.00 572.50 2878.00
1919 494.50 466.50 451.50 244.50 158.50 82.50 30.50 25.83 a 72.50 188.00 340.50 554.50 3109.83
1920 452.50 430.00 457.50 285.00 193.00 71.50 25.00 15.00 67.50 245.00 379.50 512.50 3134.00
1921 555.00 387.00 320.00 296.50 285.50 61.50 9.50 13.00 68.00 115.00 246.50 479.50 2837.00
1922 656.00 461.50 446.00 330.50 161.50 54.00 12.50 26.00 15.00 194.50 426.00 512.50 3296.00
1923 596.00 426.50 314.50 284.00 197.50 151.50 27.50 19.50 39.00 134.50 176.50 524.50 2891.50
1924 517.00 290.00 389.00 209.50 97.00 50.50 21.00 16.00 21.00 218.50 314.50 586.00 2730.00
1925 501.00 346.00 320.00 273.00 177.50 69.00 9.50 18.50 82.00 155.50 313.50 462.00 2727.50
1926 576.00 324.00 185.50 169.50 133.50 27.00 6.50 12.50 89.00 99.50 161.50 525.50 2310.00
1927 508.00 382.00 375.00 282.00 190.00 51.50 14.50 22.00 53.50 99.00 280.00 501.00 2758.50
1928 501.50 345.00 246.00 232.50 96.62 a 55.00 7.50 9.00 49.00 161.00 312.50 535.50 2551.12
1929 578.00 430.50 369.00 343.50 138.50 107.00 6.50 7.00 54.00 79.00 0.00 z 348.00 2461.00
1930 534.00 277.00 279.00 178.50 247.50 58.50 15.50 14.50 60.50 120.50 293.50 508.50 2587.50
1931 473.50 341.00 289.00 187.50 42.50 27.00 3.00 2.00 54.50 174.00 422.00 573.50 2589.50
1932 588.00 505.00 315.00 301.00 142.50 52.00 28.50 22.00 9.50 101.00 196.50 660.00 2921.00
1933 680.00 522.50 406.00 300.50 317.00 115.00 10.50 18.00 55.00 84.50 264.50 512.50 3286.00
1934 508.00 333.00 156.50 112.00 83.50 70.00 8.50 0.00 48.00 126.50 300.50 510.50 2257.00
1935 561.50 398.50 475.50 267.00 131.00 19.50 16.00 5.50 26.00 176.50 416.00 496.00 2989.00
1936 460.00 422.50 311.50 222.00 104.00 53.50 4.00 2.50 27.50 91.00 331.00 549.50 2579.00
1937 782.50 487.00 363.50 298.00 119.00 56.00 1.50 6.00 26.00 92.50 286.00 455.50 2973.50
1938 529.50 421.00 454.00 307.50 151.50 46.50 9.00 16.00 10.50 142.00 391.00 481.00 2959.50
1939 556.00 511.00 409.00 183.50 143.00 53.50 13.00 7.00 22.00 124.00 282.50 424.50 2729.00
1940 457.50 361.00 286.50 223.00 115.50 6.00 12.00 5.00 17.00 131.00 352.00 409.00 2375.50
1941 453.50 368.50 274.00 276.00 80.00 37.00 0.50 9.00 32.50 173.00 292.50 478.00 2474.50
1942 523.50 443.50 383.00 301.00 207.00 32.00 0.00 5.00 40.50 140.00 354.00 506.50 2936.00
1943 517.00 365.00 302.00 219.50 108.50 86.00 0.00 4.50 2.00 157.50 294.50 477.00 2533.50
1944 377.50 g 383.00 g 355.00 353.00 148.00 96.50 6.00 14.00 29.50 91.00 397.00 457.50 1947.50
1945 571.00 394.50 465.00 231.00 172.50 43.50 0.00 15.00 21.00 86.00 345.00 471.00 2815.50
1946 570.50 490.50 426.50 259.14 a 152.50 91.00 10.50 15.00 38.50 232.00 436.50 543.00 3265.64
1947 696.50 399.00 321.00 194.50 82.50 24.00 27.00 8.50 30.50 153.00 456.00 582.00 2974.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.50 15.50 81.00 149.50 392.59 a 671.50 1330.59
1949 806.00 539.00 428.00 193.50 157.21 c 27.50 17.00 30.00 29.50 217.00 235.50 597.50 3277.71
1950 652.00 443.00 396.50 218.00 164.00 62.50 2.00 5.17 a 35.50 125.00 219.00 434.00 2756.67
1951 545.00 445.00 395.50 272.50 134.50 50.00 22.50 5.50 30.50 161.00 325.50 580.50 2968.00
1952 611.00 441.00 470.00 252.00 116.50 92.00 0.00 7.50 24.50 94.50 383.50 512.00 3004.50
1953 417.50 418.00 407.50 295.00 237.50 114.50 0.00 25.50 19.00 155.00 305.50 470.00 2865.00
1954 530.50 372.50 434.00 154.00 81.00 57.00 0.00 13.50 22.00 91.50 288.00 355.50 h 2044.00
1955 613.00 436.50 340.00 359.00 128.50 40.50 12.50 5.00 20.69 a 82.00 348.00 427.50 2813.19
1956 461.50 513.50 356.00 255.00 126.00 29.00 4.00 2.50 4.50 143.50 262.00 442.50 2600.00
1957 593.00 330.00 319.00 203.00 134.00 19.50 1.00 9.50 4.00 107.00 326.50 487.50 2534.00
1958 440.00 287.50 431.00 201.00 49.50 11.00 2.50 0.00 5.00 44.50 245.50 265.50 1983.00
1959 396.00 392.00 173.17 b 80.00 81.50 13.00 0.00 6.00 21.50 50.00 220.00 415.00 1848.17
1960 511.00 380.00 254.50 212.50 119.50 4.50 0.50 0.00 5.69 a 132.00 384.00 520.50 2524.69
1961 502.50 325.00 376.50 179.00 186.50 18.00 6.50 0.00 26.00 135.50 340.50 574.50 2670.50
1962 521.00 457.50 431.00 173.04 b 176.00 f 34.50 i 7.75 a 11.37 a 41.79 b 145.00 f 302.50 509.00 2454.94
1963 650.50 260.00 461.50 431.50 181.50 66.00 50.50 22.50 18.00 144.50 408.50 619.00 3314.00
1964 560.00 467.50 403.50 280.50 231.50 91.50 22.00 11.00 47.50 72.50 417.00 425.00 3029.50
1965 501.50 396.50 381.76 d 279.00 161.00 110.50 12.50 0.50 43.00 71.50 297.50 645.00 2900.26
1966 547.50 477.00 335.00 136.50 96.50 48.00 26.00 5.00 22.50 113.00 325.50 533.50 2666.00
1967 487.50 409.00 417.00 484.50 153.50 73.00 0.00 0.00 0.50 61.50 232.50 534.75 a 2853.75
1968 586.50 273.50 299.50 229.00 174.00 33.00 2.00 11.00 22.50 139.00 323.50 549.50 2643.00
1969 538.00 477.00 369.50 291.50 78.00 44.00 0.00 0.00 13.45 a 150.00 309.00 399.00 2669.45
1970 420.00 309.00 293.00 337.00 100.00 39.00 1.00 9.50 21.00 162.00 284.50 538.50 2514.50
1971 531.00 429.00 381.00 307.50 178.50 62.00 2.00 0.00 43.00 238.50 380.00 630.00 3182.50
1972 611.00 349.00 221.00 245.50 119.00 24.00 1.50 4.00 25.00 136.00 386.00 624.50 2746.50
1973 559.00 354.50 457.50 187.50 97.00 33.50 3.50 19.00 13.50 144.50 372.00 489.28 a 2730.78
1974 527.00 446.50 335.50 284.00 191.00 30.00 17.00 1.50 3.50 102.00 366.50 552.50 2857.00
1975 554.00 413.00 424.00 382.00 128.00 39.50 21.00 5.00 9.31 a 180.00 383.50 500.00 3039.31
1976 523.00 416.50 389.50 314.00 115.50 96.00 6.50 10.00 6.00 74.50 267.50 529.50 2748.50
1977 580.50 340.50 442.00 199.00 267.00 33.00 19.00 4.00 18.21 b 100.50 297.50 390.50 2691.71
1978 414.00 341.50 215.00 268.50 103.50 42.50 16.00 15.00 36.00 80.50 393.50 654.00 2580.00
1979 0.00 z 431.00 328.50 265.50 84.22 a 24.50 6.50 0.00 0.50 92.00 342.50 435.00 2010.22
1980 439.50 318.50 391.00 225.50 208.50 100.50 26.00 0.00 22.00 140.00 299.00 463.00 2633.50
1981 437.50 319.00 356.00 236.00 133.00 11.50 3.50 5.00 11.50 185.00 255.00 417.00 2370.00
1982 627.50 343.50 417.50 283.50 121.00 91.00 11.00 2.00 30.00 104.50 405.00 519.00 2955.50
1983 526.50 332.00 347.00 334.00 159.50 42.00 22.50 0.50 5.00 57.00 344.50 398.50 2569.00
1984 493.00 399.50 263.00 302.00 76.50 30.00 0.00 1.00 3.50 168.50 370.00 581.50 2688.50
1985 580.00 382.00 444.50 138.00 139.00 14.50 0.00 4.00 43.50 183.50 445.00 593.50 2967.50
1986 383.50 308.00 243.50 242.00 102.00 6.50 7.00 5.00 89.48 a 99.00 304.00 522.50 2312.48
1987 559.50 367.00 349.00 121.50 102.00 15.00 26.50 2.00 13.50 55.50 335.00 521.50 2468.00
1988 481.50 353.50 284.00 200.00 169.50 58.50 1.50 6.00 23.00 82.00 336.50 544.00 2540.00
1989 582.00 497.00 295.00 142.50 133.00 26.00 11.50 5.50 31.00 149.50 343.50 548.00 2764.50
1990 513.00 477.50 329.00 135.00 136.50 25.00 0.50 3.00 4.50 82.50 374.00 705.00 2785.50
1991 521.50 293.00 463.00 284.50 164.50 73.50 1.00 8.00 3.50 97.50 306.50 532.00 2748.50
1992 572.50 315.00 286.50 136.50 23.50 33.00 0.00 1.00 4.50 55.00 326.00 575.00 2328.50
1993 556.50 433.00 251.50 231.50 89.50 47.00 0.00 3.50 27.50 80.00 370.50 564.50 2655.00
1994 496.50 457.50 289.50 239.50 130.00 38.50 1.50 0.00 18.50 168.50 517.50 602.00 2959.50
1995 393.00 300.00 369.00 255.00 165.00 83.50 2.00 7.50 13.50 84.00 202.50 390.50 2265.50
1996 464.50 324.00 274.50 198.00 92.50 28.50 0.00 3.00 22.00 171.00 328.00 401.00 2307.00
1997 473.00 365.00 270.00 186.00 50.00 32.50 0.00 0.00 1.00 152.00 288.50 531.50 2349.50
1998 429.00 418.00 353.00 291.50 254.00 44.50 5.50 3.50 32.50 175.50 355.50 621.50 2984.00
1999 517.00 453.04 c 450.65 d 288.75 b 198.92 a 71.38 a 9.96 c 8.78 a 5.89 b 81.12 a 303.62 a 0.00 z 2389.11
2000 455.00 367.68 a 321.50 166.11 c 125.00 33.00 e 19.12 a 4.50 18.00 155.00 468.62 a 486.50 2620.03
2001 591.50 0.00 z 0.00 z 319.14 a 19.50 10.50 7.50 1.66 c 10.00 82.50 294.50 482.00 1818.80
2002 581.77 a 365.00 0.00 z 227.00 168.50 32.68 b 1.00 7.00 23.00 149.00 294.50 446.00 2295.45
2003 354.50 407.50 322.50 343.00 126.50 31.00 3.50 0.00 12.00 71.50 416.00 456.50 2544.50
2004 516.00 427.00 176.00 170.50 122.50 33.00 1.00 0.00 28.00 184.50 391.00 489.50 2539.00
2005 544.00 339.00 275.50 284.50 102.00 38.50 0.00 0.00 44.50 124.50 287.50 422.50 2462.50
2006 491.50 381.00 470.50 266.50 71.00 13.50 5.50 1.00 29.50 161.50 339.50 521.50 2752.50
2007 622.50 388.00 240.25 e 215.50 105.00 32.00 3.00 4.00 42.50 f 163.00 331.50 580.00 2684.75
2008 591.50 423.00 356.00 261.00 126.50 40.50 6.00 1.00 25.50 94.00 259.50 579.50 2764.00
2009 485.50 420.00 369.50 276.00 e 47.50 f 36.50 3.00 0.00 13.50 74.00 k 405.50 535.50 2545.00
2010 501.50 365.00 339.00 325.00 200.50 32.00 2.50 18.00 19.00 132.50 391.00 438.50 2764.50
2011 497.03 a 452.15 a 401.34 c 0.00 z 236.67 e 71.25 b 8.86 c 0.00 b 4.00 g 95.21 c 408.89 c 570.83 b 2742.23
2012 487.65 e 412.13 c 385.20 d 243.10 a 82.09 d 42.93 a 0.00 g 0.00 l 1.50 t 15.50 u 192.00 k 532.54 c 2185.66
2013 606.50 456.00 55.00 x 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 1062.50
Period of Record Statistics
MEAN 534.96 399.27 359.61 256.07 154.79 55.19 11.17 11.29 34.87 134.93 332.57 514.40 2787.83
S.D. 77.26 65.42 80.70 69.30 63.88 33.41 11.48 12.17 27.68 49.97 64.81 72.77 309.90
SKEW 0.54 0.12 -0.19 0.29 0.46 1.04 1.30 1.87 1.59 0.53 -0.06 -0.19 0.08
MAX 806.00 553.00 567.50 484.50 321.50 183.50 51.00 68.50 161.50 280.00 517.50 705.00 3687.50
MIN 354.50 260.00 156.50 80.00 19.50 4.50 0.00 0.00 0.50 44.50 161.50 265.50 1848.17
NO YRS 118 118 117 118 116 116 119 119 116 116 117 118 104