BERKELEY, CALIFORNIA

Monthly Total Heating Degree Days

(040693)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201301
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 563.00 464.00 445.00 387.50 215.00 125.00 97.00 134.00 142.00 234.00 318.50 442.50 3567.50
1894 585.50 511.50 470.00 277.50 245.50 165.50 127.50 113.67 a 79.50 192.00 228.00 524.50 3520.67
1895 568.00 355.50 417.50 298.00 181.87 a 98.50 77.50 94.00 123.00 182.50 322.50 560.00 3278.87
1896 440.50 329.50 346.00 401.00 249.50 101.50 37.50 33.00 115.00 183.50 410.50 437.00 3084.50
1897 550.50 455.00 533.00 225.00 163.50 81.00 70.00 120.50 95.00 217.00 417.00 525.00 3452.50
1898 620.50 366.50 455.00 266.50 304.50 94.00 124.00 106.00 111.00 146.00 337.00 521.50 3452.50
1899 420.00 398.00 401.50 288.50 314.28 b 116.00 146.00 118.00 123.00 234.00 293.50 517.00 3369.78
1900 468.50 374.00 316.50 326.50 145.00 92.50 64.07 a 86.00 74.50 0.00 z 279.50 476.50 2703.57
1901 499.50 0.00 z 309.48 a 352.24 a 254.00 124.29 b 129.50 134.00 147.50 123.50 243.75 b 455.00 2772.76
1902 0.00 z 0.00 z 0.00 z 308.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 308.50
1903 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
1904 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
1905 505.00 402.00 332.00 0.00 z 295.00 199.00 163.50 161.50 140.00 222.00 363.50 545.00 3328.50
1906 519.00 289.33 a 353.00 247.50 225.50 101.00 69.00 113.50 91.00 131.75 c 322.50 b 505.50 2968.58
1907 573.00 287.50 449.00 232.50 202.50 139.50 0.00 z 83.50 0.00 z 0.00 z 0.00 z 0.00 z 1967.50
1908 506.00 19.50 z 380.50 243.00 238.00 169.50 84.00 135.00 118.00 207.50 358.50 603.50 3043.50
1909 453.00 432.00 448.50 241.50 248.00 155.00 80.00 120.00 112.00 208.50 370.00 538.00 3406.50
1910 643.50 478.50 350.00 244.50 156.00 157.50 139.50 189.00 201.50 188.50 380.00 451.00 3579.50
1911 504.00 0.00 z 363.00 328.00 254.00 197.50 171.00 186.00 174.00 200.00 328.00 521.00 3226.50
1912 475.00 383.00 447.50 373.00 210.00 96.00 112.00 65.00 57.50 172.50 282.00 459.00 3132.50
1913 584.00 381.00 407.00 278.50 206.00 127.00 70.00 28.00 36.50 110.00 321.50 401.00 f 2549.50
1914 460.50 336.00 232.50 213.50 225.50 202.50 141.00 132.50 114.00 117.00 216.50 556.00 2947.50
1915 500.50 395.00 286.50 251.50 251.00 130.00 53.00 47.50 66.50 124.50 274.50 458.00 2838.50
1916 629.00 293.50 285.50 211.50 240.50 167.50 88.00 101.00 f 84.00 296.50 380.00 0.00 z 2676.00
1917 599.50 408.00 459.00 284.50 299.50 119.50 85.00 147.25 a 0.00 z 0.00 z 224.00 314.00 2940.25
1918 415.00 410.00 350.50 258.50 277.00 98.00 94.50 56.00 67.00 88.50 341.50 520.50 2977.00
1919 436.00 427.00 423.00 264.00 185.50 142.00 153.00 114.50 70.00 169.50 276.00 0.00 z 2660.50
1920 433.00 386.50 425.50 306.00 199.50 95.50 108.50 68.00 111.50 179.00 335.50 493.50 3142.00
1921 522.50 359.50 339.00 299.00 272.50 87.00 138.50 91.50 78.50 127.00 264.00 418.50 2997.50
1922 611.00 461.00 430.50 355.00 206.00 117.00 89.50 74.00 35.50 150.00 357.00 468.50 3355.00
1923 552.00 389.00 284.00 268.00 207.50 173.00 56.00 46.00 83.00 158.50 174.50 503.00 2894.50
1924 501.00 298.50 407.50 299.50 239.00 192.00 184.00 179.00 132.50 222.50 313.00 575.00 3543.50
1925 471.00 320.50 365.00 303.50 222.50 163.50 148.50 155.00 111.50 170.50 297.00 388.50 3117.00
1926 528.00 297.00 217.52 a 181.00 169.50 183.00 120.50 131.50 150.50 112.00 150.50 463.50 2704.52
1927 440.00 329.50 371.00 322.50 239.00 183.00 183.50 154.50 82.00 121.50 243.50 461.00 3131.00
1928 466.00 325.50 265.50 280.50 231.00 143.00 196.50 205.00 149.00 227.50 297.50 504.50 3291.50
1929 584.50 441.50 422.00 400.50 271.00 137.50 19.00 97.00 127.00 113.50 180.50 338.00 3132.00
1930 519.00 279.00 296.00 239.50 291.00 165.00 195.00 103.50 99.50 108.00 249.00 422.50 2967.00
1931 412.00 263.00 243.50 214.00 154.50 103.50 99.50 152.33 b 116.00 200.00 367.00 518.50 2843.83
1932 526.50 432.50 288.00 325.50 251.50 193.50 141.50 135.00 101.00 117.00 158.50 562.50 3233.00
1933 579.00 431.50 343.00 328.50 353.00 221.00 166.50 163.50 141.50 148.50 180.50 447.50 3504.00
1934 414.00 302.50 189.00 214.00 175.00 161.50 137.50 125.50 93.50 132.50 243.00 395.50 2583.50
1935 476.00 355.50 452.00 251.50 264.50 122.50 158.00 160.00 173.00 171.00 335.00 405.50 3324.50
1936 396.50 388.50 301.00 261.50 152.00 91.50 108.00 126.50 86.00 108.00 267.12 d 463.00 2749.62
1937 714.00 456.00 354.00 330.00 231.00 127.00 138.50 128.50 107.50 103.50 235.00 379.50 3304.50
1938 439.00 378.50 442.94 e 323.00 242.00 199.00 141.00 113.00 79.00 134.00 273.00 372.50 3136.94
1939 452.50 420.50 416.50 267.00 244.50 172.00 133.50 120.50 76.00 127.00 210.00 338.50 2978.50
1940 411.50 317.00 280.50 240.50 217.50 165.50 117.00 131.00 45.50 129.50 283.00 349.50 2688.00
1941 401.00 303.33 a 228.50 297.50 157.50 120.00 104.00 85.00 67.00 163.50 229.00 417.00 2573.33
1942 445.50 371.50 334.50 317.50 276.50 147.50 105.00 146.50 133.50 131.00 306.50 395.50 3111.00
1943 446.40 a 278.00 305.50 253.00 185.50 207.00 129.00 109.00 78.00 134.50 194.00 379.50 2699.40
1944 435.00 419.00 308.50 364.50 254.50 190.50 206.50 132.50 104.50 124.00 323.00 362.50 3225.00
1945 488.00 325.00 432.00 280.18 b 297.50 118.00 121.50 137.50 78.00 115.00 312.00 422.00 3126.68
1946 465.50 420.50 380.50 295.50 282.50 152.00 99.00 172.00 92.00 162.50 333.50 455.00 3310.50
1947 581.00 334.50 296.50 219.00 153.00 59.40 e 20.00 26.00 f 44.50 109.50 339.00 465.00 b 2621.40
1948 381.50 454.00 449.50 360.00 239.06 e 0.00 z 81.00 61.50 84.50 131.00 283.50 595.50 3121.06
1949 703.00 510.00 352.50 238.50 204.50 110.50 120.00 51.50 50.00 175.67 a 169.00 501.50 3186.67
1950 609.50 398.50 374.50 238.50 254.50 165.50 133.50 74.00 75.00 105.00 164.00 370.50 2963.00
1951 494.50 377.00 332.50 348.50 210.00 194.50 154.50 140.50 100.00 118.50 278.00 508.50 3257.00
1952 564.00 396.00 434.50 257.00 185.00 175.00 123.00 114.00 71.00 208.50 108.50 o 350.00 h 2528.00
1953 368.00 332.00 364.25 a 323.89 c 217.50 119.50 124.50 75.50 37.00 117.50 215.50 f 270.50 h 2079.64
1954 455.18 a 300.74 a 408.50 214.00 191.00 108.62 a 71.50 140.50 61.00 98.50 250.00 495.00 2794.54
1955 566.50 391.00 334.50 375.00 184.50 163.45 a 126.50 170.50 145.00 165.69 b 340.00 403.00 3365.64
1956 467.00 470.50 361.00 319.50 205.00 93.00 144.00 95.50 56.00 186.50 226.00 433.50 3057.50
1957 564.00 340.00 348.50 226.50 192.00 63.00 77.50 68.00 30.50 109.00 293.50 443.00 2755.50
1958 418.00 273.50 410.50 237.50 143.00 26.50 91.50 64.50 29.50 102.00 242.00 288.00 2326.50
1959 399.50 368.00 217.00 190.00 186.50 64.00 70.00 72.00 55.50 67.50 198.50 376.50 2265.00
1960 481.00 353.00 292.00 242.00 179.50 113.00 114.50 147.00 138.00 166.00 351.00 481.50 3058.50
1961 522.50 320.00 385.50 257.50 283.00 101.00 89.50 76.00 88.50 187.50 342.50 522.50 3176.00
1962 494.50 417.00 430.00 242.50 234.50 166.50 182.50 86.50 159.00 159.50 256.03 a 428.00 3256.53
1963 562.00 214.50 382.50 340.00 212.50 138.50 89.50 97.50 35.00 136.50 315.50 553.00 3077.00
1964 520.50 363.00 415.00 320.50 310.50 145.56 c 109.50 88.00 117.00 125.00 371.50 425.73 a 3311.79
1965 488.50 370.50 380.00 298.00 270.22 a 252.00 191.00 76.00 152.00 114.18 a 278.00 594.50 3464.90
1966 484.50 432.50 373.00 216.50 260.50 141.11 c 72.00 n 86.50 k 88.39 b 129.00 297.50 493.00 2916.00
1967 452.50 363.50 421.27 c 456.50 193.00 197.07 a 105.06 d 109.03 b 45.00 c 65.62 a 196.50 448.50 3053.54
1968 506.50 275.50 281.00 257.50 263.00 114.50 156.00 102.50 65.50 181.00 321.00 524.50 3048.50
1969 543.53 a 443.50 357.00 315.50 210.05 b 159.50 133.00 62.00 75.00 107.00 185.00 328.00 2919.08
1970 343.50 237.00 235.00 311.00 175.00 150.00 127.00 145.00 46.50 188.00 230.00 478.00 2666.00
1971 448.50 388.50 364.50 341.00 285.00 77.50 v 0.00 z 69.00 64.00 207.00 309.50 549.50 3026.50
1972 533.00 339.50 272.50 255.50 211.50 159.50 84.00 66.50 82.50 138.00 333.50 591.00 3067.00
1973 490.50 307.50 413.00 217.00 198.50 96.50 100.00 124.00 80.50 102.00 359.50 441.00 2930.00
1974 492.00 417.50 372.50 286.00 243.00 134.00 92.00 112.00 108.00 127.00 284.00 452.00 3120.00
1975 458.00 371.50 409.50 419.00 251.50 191.00 127.00 133.50 125.00 174.50 332.50 398.00 3391.00
1976 407.00 367.50 403.50 323.50 195.50 125.50 80.00 38.50 83.00 108.50 188.00 399.50 2720.00
1977 496.00 291.50 398.00 261.50 279.00 159.50 132.00 102.00 89.50 154.50 290.00 409.50 3063.00
1978 370.00 324.50 251.50 293.00 120.00 138.00 137.50 87.00 77.50 152.50 340.50 523.00 2815.00
1979 492.00 379.50 294.00 260.00 136.50 103.00 78.50 54.00 18.50 85.50 277.00 368.50 2547.00
1980 420.50 270.00 335.00 272.00 266.50 180.50 106.00 156.00 106.50 135.50 241.00 373.50 2863.00
1981 419.50 290.50 342.00 257.00 180.00 53.00 154.00 96.50 79.50 193.50 246.50 390.00 2702.00
1982 568.00 321.50 424.50 306.00 241.00 209.00 109.50 69.50 63.50 119.50 0.00 z 437.00 2869.00
1983 478.00 324.50 360.50 313.00 207.00 108.00 67.50 18.50 25.00 58.00 319.50 404.00 2683.50
1984 424.00 384.50 259.50 319.00 135.00 154.00 80.50 83.50 18.50 191.50 376.00 545.00 2971.00
1985 546.00 341.00 454.50 234.50 265.00 109.50 119.00 109.00 127.00 194.50 424.00 536.00 3460.00
1986 366.50 266.50 246.00 296.50 208.50 104.50 100.00 130.50 135.00 121.50 199.50 427.50 2602.50
1987 483.00 306.00 295.00 175.50 151.00 118.50 77.50 62.00 62.50 103.50 272.50 489.00 2596.00
1988 442.00 285.00 263.00 243.00 212.50 119.50 56.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1621.00
1989 0.00 z 0.00 z 0.00 z 210.00 198.00 130.00 67.50 96.50 115.50 148.50 211.50 405.00 1582.50
1990 449.50 442.50 371.00 201.50 197.50 101.00 75.50 55.00 8.50 80.00 265.50 0.00 z 2247.50
1991 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
1992 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
1993 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 466.00 466.00
1994 391.00 392.00 266.00 261.50 199.50 65.00 m 156.00 50.00 40.50 k 106.00 429.00 509.00 2760.00
1995 366.00 259.50 332.00 265.50 235.00 128.50 26.50 i 67.00 58.50 96.50 170.00 354.00 2332.50
1996 421.50 310.00 285.50 210.00 167.50 120.50 92.00 90.00 101.50 156.03 a 245.00 337.50 2537.03
1997 428.00 303.00 259.00 138.00 i 79.50 20.50 31.50 6.00 1.50 m 79.00 i 243.50 451.50 1822.50
1998 427.00 414.00 332.00 306.00 229.00 106.50 22.50 m 48.57 a 64.50 164.00 368.00 567.00 3026.57
1999 523.00 451.50 460.50 315.50 260.00 119.00 81.00 43.00 90.50 83.24 d 247.00 404.00 3078.24
2000 428.50 357.50 332.00 223.50 144.00 86.00 72.00 48.00 39.50 168.00 387.50 424.00 2710.50
2001 510.39 c 424.00 143.00 p 336.67 c 101.00 50.50 77.50 26.00 89.50 102.50 265.50 475.00 2458.56
2002 535.50 352.50 378.50 276.50 219.00 97.00 70.50 85.50 71.00 175.00 248.50 445.50 2955.00
2003 371.50 349.00 261.50 312.50 167.50 79.50 49.00 7.00 35.50 93.00 366.00 465.50 2557.50
2004 502.00 393.00 178.50 201.00 123.00 46.00 54.00 42.00 30.50 180.00 319.00 442.50 2511.50
2005 529.50 297.50 259.00 242.00 132.00 68.50 33.00 73.50 102.00 148.50 232.50 68.50 z 2118.00
2006 360.50 f 340.00 446.50 285.50 133.50 47.50 33.50 72.00 95.00 128.00 289.00 443.50 2314.00
2007 499.00 356.50 274.50 264.50 198.50 105.50 51.50 66.50 67.50 164.50 256.00 503.00 2807.50
2008 0.00 z 392.00 338.50 292.50 206.00 137.50 103.50 75.00 89.50 92.00 194.00 485.50 2406.00
2009 185.00 o 358.50 336.50 255.00 187.00 72.50 h 86.50 52.50 34.00 141.00 265.50 488.00 2204.50
2010 428.50 327.00 318.00 314.50 240.50 101.00 122.50 130.50 78.00 e 149.50 308.00 407.00 2925.00
2011 413.50 400.50 365.80 a 275.00 236.00 150.00 91.00 79.50 59.50 94.50 322.00 445.00 2932.30
2012 394.00 331.00 375.50 268.50 154.50 103.00 81.50 0.00 z 121.50 118.50 240.50 459.00 2647.50
2013 480.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 480.00
Period of Record Statistics
MEAN 486.97 362.65 351.35 281.57 216.03 131.04 107.23 99.13 88.28 145.42 284.37 457.54 3021.34
S.D. 72.81 60.90 71.32 52.84 50.24 44.01 40.58 42.29 37.96 42.94 64.62 68.31 303.53
SKEW 0.55 0.10 -0.15 0.55 -0.09 0.02 0.19 0.11 0.30 0.55 -0.01 -0.03 -0.19
MAX 714.00 511.50 533.00 456.50 353.00 252.00 206.50 205.00 201.50 296.50 429.00 603.50 3579.50
MIN 343.50 214.50 178.50 175.50 79.50 20.50 19.00 6.00 8.50 58.00 150.50 288.00 2265.00
NO YRS 111 110 112 113 114 110 109 109 109 109 109 106 84