LIVERMORE, CALIFORNIA

Monthly Total Heating Degree Days

(044997)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1903 547.50 514.00 375.50 292.76 a 112.50 46.00 17.00 4.28 b 25.50 47.02 a 283.50 507.37 a 2772.92
1904 551.50 428.27 a 371.00 275.00 93.52 a 18.62 a 15.50 3.10 a 21.50 111.17 b 338.40 e 556.93 b 2784.51
1905 493.50 373.85 a 270.50 235.00 c 239.73 a 45.00 a 19.63 a 5.50 15.00 c 130.20 a 315.00 a 569.76 b 2712.68
1906 496.52 a 299.00 379.50 252.22 c 168.84 c 65.36 b 0.00 b 3.88 c 15.54 b 76.47 a 345.54 b 523.68 c 2626.53
1907 559.15 d 280.00 433.48 a 173.00 161.72 a 69.64 b 6.00 8.50 0.00 z 83.70 a 268.45 a 476.07 c 2519.71
1908 448.90 e 274.00 k 285.56 e 198.50 219.50 67.00 0.00 d 8.50 21.00 166.00 305.69 a 637.00 2357.65
1909 429.50 399.50 438.00 0.00 z 188.00 49.00 17.50 3.50 21.00 106.50 318.50 607.00 2578.00
1910 627.50 441.50 268.84 b 142.00 g 126.77 c 93.10 a 14.50 0.00 31.50 81.63 a 311.38 a 462.93 a 2459.66
1911 493.93 a 473.41 a 326.53 a 294.31 a 217.50 58.97 a 5.88 b 12.40 a 37.50 136.18 c 307.78 c 489.91 c 2854.30
1912 416.29 c 321.50 421.27 c 340.20 e 135.07 c 34.00 3.74 b 8.78 a 16.00 156.55 a 344.46 b 485.67 d 2683.53
1913 587.28 d 357.28 c 378.20 a 242.50 96.00 35.17 a 0.00 i 3.10 a 6.50 74.06 d 254.50 f 422.00 f 1780.09
1914 333.50 h 368.50 239.50 176.00 94.50 58.00 0.00 z 6.50 11.50 60.00 240.50 563.00 1818.00
1915 526.50 365.00 234.00 199.50 189.50 22.50 8.78 a 1.00 7.50 32.50 316.50 440.00 2343.28
1916 582.00 321.00 281.50 148.00 155.00 24.00 5.00 24.50 37.00 228.50 339.00 596.00 2741.50
1917 598.50 347.50 469.50 234.00 244.00 37.50 3.50 10.00 21.50 78.50 251.50 378.00 2674.00
1918 469.50 351.50 279.00 216.50 179.80 a 5.00 4.50 i 0.00 z 12.50 19.63 a 371.50 587.00 2491.93
1919 523.00 402.50 337.50 201.00 105.50 76.00 33.00 21.00 74.00 210.50 429.50 626.50 3040.00
1920 521.50 477.50 496.50 309.50 128.00 m 1.00 y 16.00 2.67 b 62.00 143.50 394.20 e 573.50 2996.87
1921 584.02 c 355.00 381.09 b 263.33 c 197.88 a 21.35 d 2.00 8.00 43.00 122.00 325.50 492.00 2795.17
1922 754.00 530.50 488.50 387.00 147.00 72.50 8.50 10.50 3.50 169.00 452.00 555.50 3578.50
1923 676.50 509.00 341.50 316.50 190.50 143.50 19.50 10.50 38.00 149.00 274.00 591.00 3259.50
1924 376.50 m 349.50 426.50 202.50 92.50 43.50 19.50 15.50 19.50 220.50 378.00 666.00 2433.50
1925 572.50 370.50 410.00 293.50 142.00 61.50 h 6.50 15.00 62.50 180.50 402.00 582.50 3037.50
1926 708.00 379.50 255.00 146.50 123.50 26.50 4.00 2.00 75.00 97.00 201.50 589.00 2607.50
1927 541.00 398.50 448.00 325.00 219.00 41.00 4.50 9.00 52.00 100.50 315.50 584.87 a 3038.87
1928 601.50 444.50 224.50 184.00 h 45.00 32.00 6.00 4.50 26.00 124.00 372.50 649.50 2530.00
1929 655.50 466.50 356.00 323.00 115.50 75.50 1.00 1.00 39.50 82.50 312.00 407.00 2835.00
1930 575.50 323.00 308.00 231.50 212.50 19.50 3.50 0.00 26.00 88.00 283.50 499.00 2570.00
1931 464.43 d 310.50 259.88 a 151.00 27.00 10.00 0.00 0.00 c 9.00 75.50 304.00 563.50 2174.81
1932 565.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 18.50 7.50 3.00 97.00 220.50 688.50 1600.50
1933 684.00 485.50 355.00 286.50 283.00 69.50 1.50 5.50 20.50 35.00 301.00 544.00 3071.00
1934 526.00 356.50 183.00 121.00 59.00 42.00 14.50 1.00 39.50 105.00 299.00 537.00 2283.50
1935 615.50 489.00 548.00 298.50 182.50 35.50 24.00 6.00 38.50 212.50 445.50 537.00 3432.50
1936 473.00 440.50 320.00 223.50 78.00 23.50 4.00 1.50 8.00 76.50 339.00 589.50 2577.00
1937 789.00 486.00 356.00 306.00 95.50 25.00 0.00 2.00 19.00 60.50 271.00 487.50 2897.50
1938 575.00 435.56 a 454.00 308.00 114.50 30.50 0.00 11.50 17.00 166.50 401.00 516.50 3030.06
1939 542.50 500.50 466.50 184.50 106.00 46.00 10.50 0.00 23.50 108.50 306.00 465.50 2760.00
1940 511.50 360.00 302.00 226.50 87.00 2.50 1.00 17.10 b 7.50 m 123.00 387.00 437.50 2455.10
1941 478.50 360.50 312.50 299.50 91.00 47.50 0.00 8.50 31.50 176.50 325.50 485.00 2616.50
1942 587.50 468.50 435.00 329.50 227.00 44.50 0.50 0.50 30.00 73.50 346.00 503.00 3045.50
1943 527.00 416.50 359.50 240.00 121.50 92.00 4.00 4.00 5.00 136.00 328.50 486.50 2720.50
1944 529.00 495.00 370.50 335.00 121.00 79.50 4.00 1.50 15.50 75.50 418.00 517.50 2962.00
1945 643.50 431.50 512.50 264.00 168.50 43.00 2.00 0.00 7.00 40.50 401.38 a 591.87 d 3105.75
1946 602.00 555.33 a 458.00 287.59 a 180.00 94.50 0.00 z 0.00 z 0.00 z 215.45 a 434.00 552.50 3379.37
1947 731.00 449.00 355.50 177.00 69.75 a 28.50 8.55 b 0.00 b 0.00 z 150.00 481.00 595.00 3045.30
1948 411.50 473.50 367.50 252.93 a 103.33 a 15.52 a 8.00 0.00 38.50 112.50 363.00 693.50 2839.78
1949 817.00 570.50 429.00 223.50 127.50 21.00 6.50 7.00 16.00 158.00 227.00 629.50 3232.50
1950 710.50 459.50 422.00 161.67 c 70.00 h 51.00 0.00 a 6.00 19.50 119.35 a 240.52 a 475.00 2665.03
1951 583.00 474.88 c 453.12 a 255.00 120.90 a 34.14 a 16.03 b 0.52 a 8.00 118.00 357.41 a 570.50 2991.50
1952 653.50 467.50 484.63 a 226.00 125.03 a 70.50 1.07 b 1.00 8.28 a 57.50 421.00 546.00 3062.01
1953 459.00 454.50 453.63 a 297.86 b 263.50 96.00 5.17 d 16.03 b 16.00 161.64 c 310.18 b 532.17 a 3065.68
1954 602.50 470.00 476.62 c 206.00 105.50 79.29 b 0.50 29.00 23.28 a 125.55 a 371.38 a 613.28 a 3102.90
1955 700.08 a 517.50 425.22 a 384.83 a 164.00 73.00 26.19 b 7.23 a 43.97 a 110.05 a 376.03 a 487.50 3315.60
1956 525.50 555.30 b 427.50 286.00 135.88 a 42.50 3.50 3.50 15.52 a 173.00 360.00 580.50 3108.70
1957 673.00 408.15 b 362.00 213.00 153.45 a 13.45 a 0.00 11.50 2.07 a 112.50 400.00 442.50 f 2349.12
1958 528.00 296.50 473.00 228.50 83.50 12.00 4.00 0.00 5.50 41.00 309.50 371.50 2353.00
1959 482.00 466.50 276.50 136.00 108.00 h 34.29 b 3.50 11.00 31.50 87.00 331.00 548.00 2407.29
1960 618.50 480.50 350.50 280.00 189.00 3.50 3.00 8.50 18.50 160.50 411.50 629.00 3153.00
1961 726.50 418.50 464.00 266.00 233.00 40.00 9.00 2.00 41.50 157.00 401.50 644.50 3403.50
1962 665.50 478.50 515.50 214.00 222.50 45.00 4.00 6.50 23.00 181.50 351.50 581.50 3289.00
1963 724.00 289.00 489.50 431.00 183.93 a 64.00 19.50 14.50 8.50 144.00 450.00 780.50 3598.43
1964 662.50 530.50 495.00 339.00 266.00 120.50 28.00 4.50 52.50 64.50 456.50 471.00 3490.50
1965 589.50 486.00 434.00 303.50 185.00 99.00 16.00 3.00 48.50 51.50 335.00 706.50 3257.50
1966 611.50 530.00 428.50 169.00 125.00 65.50 19.00 3.50 24.00 107.00 325.00 577.00 2985.00
1967 553.00 498.50 457.00 512.50 197.00 98.00 0.50 0.00 0.00 80.50 270.50 609.50 3277.00
1968 624.50 312.00 346.50 260.50 176.50 40.00 0.50 6.00 17.50 135.00 346.00 626.50 2891.50
1969 595.00 484.00 402.50 295.50 64.50 37.00 0.00 0.00 11.00 142.50 328.00 440.50 2800.50
1970 467.50 362.50 335.00 338.50 84.00 18.00 0.00 1.50 20.50 173.50 307.50 585.00 2693.50
1971 573.00 476.00 429.00 355.00 197.50 65.00 2.50 0.00 32.00 205.00 390.50 658.50 3384.00
1972 670.50 413.50 261.50 244.14 a 115.22 a 17.50 0.00 z 15.50 30.00 153.00 0.00 z 708.50 2629.35
1973 612.00 0.00 z 0.00 z 209.00 86.50 35.50 12.50 13.50 17.00 118.00 400.50 518.22 a 2022.72
1974 561.50 466.00 350.00 310.00 160.00 22.50 21.00 1.50 2.00 86.50 371.50 0.00 z 2352.50
1975 578.00 411.00 400.50 422.00 124.00 39.00 18.50 4.50 2.50 180.00 412.50 550.50 3143.00
1976 556.00 438.50 408.50 299.50 103.50 68.50 5.50 25.50 11.00 59.93 a 265.50 546.50 2788.43
1977 608.50 331.50 421.00 158.28 a 254.00 50.00 16.50 11.50 44.00 65.00 0.00 z 412.00 2372.28
1978 442.50 371.00 0.00 z 281.50 46.00 10.34 a 1.00 7.50 12.50 79.50 432.50 708.50 2392.84
1979 632.00 462.00 a 393.00 282.50 78.00 21.00 2.50 1.50 0.50 93.50 393.50 507.50 2867.50
1980 502.00 343.00 389.50 232.50 175.00 62.00 12.50 3.00 7.50 119.00 329.50 529.50 2705.00
1981 519.50 333.50 350.00 198.00 76.00 1.50 0.00 1.50 7.00 174.50 271.00 446.50 2379.00
1982 686.50 376.50 454.50 287.50 121.50 85.00 15.00 3.50 24.50 107.50 470.00 566.00 3198.00
1983 612.00 354.00 352.50 329.00 143.50 16.50 12.50 0.00 5.00 40.00 374.50 454.50 2694.00
1984 577.50 462.50 283.50 293.00 81.50 30.50 1.50 1.00 2.50 178.50 385.00 612.00 2909.00
1985 652.00 373.00 436.50 121.50 122.50 12.00 0.00 0.50 36.00 121.50 447.00 627.00 2949.50
1986 414.50 296.00 228.00 226.00 113.50 9.50 3.00 0.00 88.00 72.00 302.50 615.50 2368.50
1987 612.00 410.00 340.00 104.50 83.00 0.00 z 8.00 0.00 0.50 38.00 339.50 532.00 2467.50
1988 514.50 343.50 264.00 188.50 129.50 40.00 0.50 2.50 9.00 79.50 333.50 554.00 2459.00
1989 592.50 502.50 304.00 127.00 109.50 27.50 1.00 0.00 20.50 126.00 318.50 576.00 2705.00
1990 528.00 499.50 311.00 121.50 114.50 11.50 0.00 0.00 0.00 49.50 349.00 714.50 2699.00
1991 533.50 291.50 446.50 254.50 158.50 57.00 0.00 5.00 3.00 93.50 291.50 571.00 2705.50
1992 634.00 328.50 283.00 116.00 9.00 17.00 0.00 0.00 0.50 35.00 317.00 580.00 2320.00
1993 590.00 431.00 243.50 198.00 71.00 25.00 0.00 0.00 9.00 50.00 369.50 576.50 2563.50
1994 529.00 470.00 278.00 199.00 121.50 23.00 0.00 0.00 5.00 110.50 0.00 z 622.00 2358.00
1995 403.00 338.00 375.00 242.50 152.00 62.50 0.50 2.50 2.00 45.00 181.00 407.50 2211.50
1996 485.50 320.00 299.00 162.00 70.50 16.50 0.00 0.00 2.50 159.00 307.50 415.50 2238.00
1997 510.50 354.50 255.00 166.50 22.00 7.00 0.00 0.00 0.00 100.00 277.50 554.00 2247.00
1998 479.50 408.00 338.00 264.00 226.50 47.50 6.00 0.00 29.50 130.50 334.00 602.00 2865.50
1999 520.00 430.50 413.00 248.00 158.00 50.50 3.00 1.00 0.50 40.00 257.50 503.00 2625.00
2000 432.00 362.50 300.00 139.00 96.50 15.50 10.00 0.00 10.00 0.00 z 450.00 483.50 2299.00
2001 581.00 427.00 232.00 289.50 16.00 4.50 3.00 0.00 1.50 35.50 249.00 491.00 2330.00
2002 574.50 369.00 356.50 197.00 111.00 12.50 0.00 2.50 7.50 99.50 278.50 463.00 2471.50
2003 406.00 416.00 264.50 310.50 109.50 13.50 2.00 0.00 0.00 30.00 395.50 473.00 2420.50
2004 545.00 422.00 155.50 146.00 69.50 8.00 0.00 0.50 19.00 155.00 376.00 494.50 2391.00
2005 589.00 336.00 270.00 234.00 74.50 29.50 0.00 0.00 11.50 78.50 266.50 430.50 2320.00
2006 464.50 372.00 454.00 251.00 48.00 13.00 0.00 0.00 11.50 117.00 311.00 514.50 2556.50
2007 595.50 382.50 227.00 171.00 78.50 11.50 0.00 1.50 32.00 124.00 268.50 552.00 2444.00
2008 573.00 419.50 330.50 231.00 106.00 19.00 2.50 0.00 6.50 56.00 247.00 598.50 2589.50
2009 488.50 409.00 334.50 236.50 41.00 23.50 0.00 0.00 9.00 111.00 368.00 575.00 2596.00
2010 524.50 359.50 356.50 295.50 178.00 18.00 0.00 9.00 6.50 113.00 365.50 454.50 2680.50
2011 531.50 454.00 359.00 245.50 194.00 54.00 5.50 0.00 1.50 79.50 395.00 544.00 2863.50
2012 500.50 382.50 367.50 203.50 82.00 31.50 0.00 0.50 1.00 89.00 279.50 523.50 2461.00
2013 639.00 450.50 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 1089.50
Period of Record Statistics
MEAN 568.29 414.54 365.02 247.05 133.60 41.06 6.42 4.89 19.85 109.86 339.89 549.16 2805.41
S.D. 85.24 69.29 83.01 73.41 59.88 28.03 7.62 6.06 17.96 49.07 62.89 78.32 344.81
SKEW 0.35 0.05 -0.14 0.48 0.33 0.98 1.28 1.70 1.36 0.32 0.03 0.18 0.25
MAX 817.00 570.50 548.00 512.50 283.00 143.50 33.00 29.00 88.00 228.50 481.00 780.50 3598.43
MIN 403.00 280.00 155.50 104.50 9.00 1.50 0.00 0.00 0.00 19.63 181.00 371.50 2174.81
NO YRS 109 108 107 106 106 106 105 108 106 109 106 107 84