SANTA ROSA, CALIFORNIA

Monthly Total Heating Degree Days

(047965)

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
1931 524.62 e 319.00 302.00 222.50 72.50 46.00 1.50 20.50 73.00 173.50 397.50 592.50 2745.12
1932 590.00 463.50 293.00 332.50 191.50 81.00 32.50 33.00 26.00 155.00 242.00 680.50 3120.50
1933 679.00 498.00 367.00 310.00 315.00 108.50 25.50 29.50 61.00 87.50 297.50 558.50 3337.00
1934 499.00 336.50 187.00 189.00 141.00 76.50 43.50 16.50 52.00 152.00 313.00 494.50 2500.50
1935 578.50 405.50 459.50 217.50 150.50 20.50 38.00 17.50 47.00 156.00 427.50 539.92 a 3057.92
1936 446.50 420.00 275.50 218.50 90.00 34.50 0.00 6.00 20.50 88.50 337.00 543.50 2480.50
1937 745.00 473.00 344.50 309.50 114.00 50.00 10.50 10.50 32.50 56.50 284.00 394.00 2824.00
1938 481.50 379.00 407.50 320.00 229.00 63.00 49.50 21.00 11.50 128.50 399.50 427.00 2917.00
1939 506.00 435.00 358.00 190.50 142.00 61.50 17.00 14.00 19.50 95.00 305.50 421.50 2565.50
1940 454.50 350.50 284.00 203.00 135.50 21.00 24.50 15.00 34.50 156.50 381.00 421.00 2481.00
1941 457.00 356.00 299.00 313.00 135.00 54.00 18.50 18.50 39.00 165.50 308.00 488.50 2652.00
1942 522.00 419.50 369.50 276.50 230.50 49.50 5.00 16.50 50.00 111.50 335.00 501.50 2887.00
1943 507.00 368.50 320.50 247.00 120.50 115.50 31.50 15.00 10.50 150.00 290.00 485.00 2661.00
1944 551.50 449.50 336.50 356.00 182.50 95.00 37.00 23.00 34.00 101.00 396.21 a 517.00 3079.21
1945 581.50 349.50 471.00 227.50 230.50 60.00 10.50 27.50 31.00 122.50 350.00 524.00 2985.50
1946 588.50 521.00 410.50 306.00 216.50 79.50 12.50 39.00 44.00 212.00 432.50 571.50 3433.50
1947 680.00 389.50 336.00 209.00 121.00 55.50 21.50 17.50 38.50 162.50 434.50 600.00 3065.50
1948 530.00 526.50 499.00 384.00 268.50 93.00 61.00 26.50 71.50 151.50 386.00 686.50 3684.00
1949 784.00 553.00 406.00 226.00 185.50 48.00 38.50 42.00 36.00 213.50 284.50 626.00 3443.00
1950 678.38 a 452.00 441.00 257.00 215.00 107.00 15.00 17.50 48.00 155.00 256.50 438.50 3080.88
1951 571.50 453.00 385.50 341.00 176.00 93.50 45.50 27.50 47.00 148.50 356.50 580.50 3226.00
1952 649.00 437.50 506.00 276.50 165.50 151.50 17.57 a 26.50 31.50 135.50 442.50 546.50 3386.07
1953 468.50 407.50 445.00 340.00 269.00 119.50 9.00 34.50 21.50 180.00 228.00 j 511.50 2806.00
1954 576.00 426.00 489.00 241.00 156.50 80.00 9.50 37.00 56.50 154.50 401.00 655.00 3282.00
1955 679.50 488.50 426.50 402.50 161.50 104.00 26.00 36.50 70.00 153.50 408.50 489.50 3446.50
1956 545.00 549.00 426.00 307.00 181.00 47.50 33.50 11.50 30.50 206.50 368.50 612.00 3318.00
1957 681.00 414.50 404.50 245.00 197.00 19.00 18.50 21.00 18.50 185.50 416.50 574.50 3195.50
1958 574.50 324.50 492.00 249.00 130.00 28.50 5.50 1.00 18.50 83.50 303.50 408.00 2618.50
1959 488.50 464.00 298.00 195.00 156.00 26.50 2.50 30.50 37.50 84.50 335.00 525.50 2643.50
1960 574.50 428.50 370.50 283.50 169.00 34.66 a 22.22 a 22.50 58.50 146.39 d 412.50 547.50 3070.26
1961 640.50 391.50 443.50 264.00 234.50 54.00 15.50 5.00 70.00 170.00 402.00 602.84 c 3293.34
1962 607.50 466.50 501.50 219.64 b 199.00 72.50 34.00 12.50 49.00 164.00 325.00 553.00 3204.14
1963 681.50 265.50 448.50 405.00 197.00 70.00 29.50 14.00 12.00 143.00 410.00 688.00 3364.00
1964 638.00 448.50 467.50 304.00 243.50 91.50 18.50 5.50 53.50 81.00 425.00 480.00 3256.50
1965 559.50 441.50 397.00 311.00 167.00 141.50 29.50 5.50 0.00 z 72.00 346.00 692.50 3163.00
1966 591.00 499.50 422.00 190.50 158.00 53.00 30.00 12.00 26.50 101.00 319.50 512.50 2915.50
1967 499.50 403.50 415.00 462.00 148.50 88.50 5.50 0.50 0.50 47.50 237.00 551.00 2859.00
1968 603.50 270.50 303.00 221.00 163.00 23.00 4.50 5.50 12.50 138.50 344.50 586.50 2676.00
1969 620.00 481.50 376.00 291.50 115.00 42.50 3.00 5.00 19.50 128.00 326.00 415.00 2823.00
1970 441.00 315.00 283.50 323.50 112.50 50.00 20.50 24.00 26.00 187.50 290.50 563.50 2637.50
1971 508.50 399.50 390.50 327.50 188.50 54.00 5.00 3.00 44.00 218.00 367.50 627.50 3133.50
1972 634.00 368.00 246.50 266.00 138.50 50.50 11.00 9.50 33.50 149.50 405.50 670.50 2983.00
1973 566.50 340.50 433.00 193.50 112.00 27.00 15.50 27.00 25.50 110.50 375.00 476.50 2702.50
1974 525.00 434.00 357.00 269.00 176.00 55.00 19.50 7.00 10.50 103.50 359.00 540.50 2856.00
1975 576.50 408.00 387.50 407.00 140.00 58.50 25.00 18.50 31.00 177.00 424.50 495.50 3149.00
1976 524.00 410.50 408.50 296.50 103.00 72.00 3.50 15.50 27.50 81.00 235.00 533.00 2710.00
1977 565.50 317.00 422.50 176.50 205.50 35.50 0.00 1.00 15.50 102.50 297.00 402.00 2540.50
1978 436.00 348.50 0.00 z 290.00 75.00 14.00 9.50 10.52 c 7.00 63.55 a 0.00 z 584.87 a 1838.93
1979 552.32 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 21.50 10.16 b 4.50 101.50 370.00 478.43 a 1538.41
1980 491.50 322.00 359.00 268.50 212.00 102.50 40.00 49.60 a 49.50 140.50 306.00 514.50 2855.60
1981 509.00 341.00 383.00 238.50 99.50 12.00 21.50 10.50 36.50 184.97 a 279.00 466.60 b 2582.07
1982 645.00 381.77 b 438.50 293.50 159.00 127.00 17.50 9.00 19.50 116.50 432.50 540.00 3179.77
1983 554.00 354.00 378.50 332.00 171.00 20.50 19.50 1.00 11.50 35.00 373.00 444.50 2694.50
1984 467.00 436.00 247.50 273.00 74.00 47.00 11.50 13.00 5.00 179.50 407.50 600.00 2761.00
1985 680.00 397.50 493.00 220.50 261.50 70.50 65.50 82.50 123.00 202.53 a 496.00 687.50 3780.03
1986 487.50 370.50 334.00 330.50 221.50 110.50 81.50 112.00 145.50 179.50 330.00 604.50 3307.50
1987 596.50 422.50 434.00 234.00 183.00 117.00 116.00 104.00 72.00 56.00 314.00 318.00 i 2649.00
1988 490.50 306.00 248.50 218.00 150.50 65.00 7.00 27.50 45.00 114.00 309.00 491.00 2472.00
1989 552.00 499.00 342.50 187.00 148.00 81.50 14.50 28.50 57.00 138.50 281.50 531.00 2861.00
1990 501.00 468.50 362.00 156.50 171.00 44.00 15.00 12.50 1.00 58.00 304.50 635.50 2729.50
1991 490.50 273.00 450.50 275.00 205.00 109.00 45.00 40.00 34.00 86.50 236.50 504.50 2749.50
1992 578.00 292.00 293.00 146.00 71.00 44.50 11.00 4.50 17.00 47.00 273.50 546.50 2324.00
1993 558.00 420.50 256.00 241.50 104.00 42.50 29.50 9.50 28.50 76.50 342.50 563.50 2672.50
1994 482.50 435.00 283.00 226.50 148.50 42.00 42.50 13.50 17.50 98.50 474.50 583.00 2847.00
1995 403.50 290.50 361.00 252.50 197.00 80.00 8.50 6.50 9.50 66.50 179.00 393.00 2247.50
1996 458.00 322.00 276.50 197.50 130.00 40.50 18.00 13.00 44.00 123.00 277.50 398.00 2298.00
1997 461.00 329.50 248.50 155.00 74.00 13.00 7.50 2.50 2.00 99.50 243.50 455.50 2091.50
1998 418.00 387.50 310.50 0.00 z 238.00 82.50 23.00 6.50 35.00 104.00 345.50 547.50 2498.00
1999 540.50 435.50 451.00 252.00 187.00 90.00 54.00 15.00 32.00 81.50 258.00 457.00 2853.50
2000 426.50 355.00 308.00 0.00 z 0.00 z 53.50 50.50 20.00 26.38 a 143.50 407.50 473.00 2263.88
2001 538.50 402.50 0.00 z 0.00 z 0.00 z 22.00 38.50 12.00 33.00 73.50 280.50 462.00 1862.50
2002 544.50 354.50 380.00 249.50 178.50 50.50 21.00 41.00 38.00 139.00 239.00 441.00 2676.50
2003 384.00 389.50 312.38 e 388.50 164.50 62.07 a 17.50 2.00 14.00 54.00 419.00 494.00 2701.45
2004 512.50 417.00 181.00 210.50 136.00 44.50 21.00 3.00 22.50 171.50 367.50 479.00 2566.00
2005 557.50 337.00 278.50 299.00 160.00 80.00 3.50 30.50 64.00 112.00 306.50 465.50 2694.00
2006 471.50 387.50 506.00 292.00 150.50 46.55 a 11.50 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1854.05
Period of Record Statistics
MEAN 549.50 399.93 370.27 268.77 166.02 63.70 23.80 20.48 35.42 126.58 343.08 529.64 2899.03
S.D. 81.26 66.60 79.42 65.54 50.99 32.06 19.68 20.04 24.98 45.74 66.01 78.39 350.18
SKEW 0.46 0.10 -0.21 0.53 0.30 0.56 1.91 2.64 1.74 0.00 -0.04 0.27 0.21
MAX 784.00 553.00 506.00 462.00 315.00 151.50 116.00 112.00 145.50 218.00 496.00 692.50 3780.03
MIN 384.00 265.50 181.00 146.00 71.00 12.00 0.00 0.50 0.50 35.00 179.00 393.00 2091.50
NO YRS 76 75 73 72 73 75 75 75 74 75 73 74 67