COLUSA 2 SSW, CALIFORNIA

Monthly Total Heating Degree Days

(041948)

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
1948 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 72.33 a 388.50 733.50 1194.33
1949 829.00 547.08 b 391.00 83.50 55.50 5.50 0.00 0.00 1.50 151.00 238.97 a 715.00 3018.04
1950 764.00 431.00 419.00 128.50 93.00 a 20.50 0.00 1.50 7.24 a 99.00 258.00 521.26 d 2743.00
1951 655.00 461.50 364.00 177.50 82.00 2.00 0.00 0.00 0.00 f 0.00 z 224.00 p 594.68 a 2336.68
1952 714.50 470.50 482.50 182.00 76.50 25.50 0.00 0.00 13.20 e 37.50 427.50 609.50 3039.20
1953 466.50 408.50 0.00 z 228.00 133.00 29.50 0.00 z 1.00 0.00 111.50 343.50 511.00 2232.50
1954 584.00 452.50 442.00 143.00 22.00 17.50 0.00 0.00 6.50 129.50 409.00 681.50 2887.50
1955 701.00 511.00 378.50 343.50 54.00 0.00 0.00 0.00 13.00 82.50 423.00 520.00 3026.50
1956 554.00 552.50 351.50 196.00 62.50 2.50 0.00 0.00 0.00 178.00 387.50 669.00 2953.50
1957 716.50 368.00 326.50 158.50 52.50 0.00 0.00 0.00 7.50 185.50 466.00 650.50 2931.50
1958 624.00 318.50 458.50 176.50 14.00 6.50 0.00 0.00 3.50 39.50 346.00 442.50 2429.50
1959 495.50 442.00 244.00 47.50 51.50 0.00 0.00 2.50 13.00 49.50 358.00 618.50 2322.00
1960 643.00 440.00 301.50 203.50 80.00 0.00 0.00 0.00 0.50 113.00 429.50 639.00 2850.00
1961 687.00 363.00 402.00 156.50 68.50 0.00 0.00 0.00 2.00 143.00 399.50 641.00 2862.50
1962 654.00 492.00 433.50 88.00 67.00 1.50 0.00 0.00 2.50 117.00 344.50 567.00 2767.00
1963 748.50 246.00 425.50 330.50 63.00 1.00 0.00 0.00 0.00 98.50 416.50 723.50 3053.00
1964 632.00 411.50 384.00 185.00 82.50 16.00 0.00 0.00 14.50 81.50 457.50 498.00 2762.50
1965 627.50 466.00 356.00 243.50 50.00 7.00 0.00 0.00 23.00 65.00 347.00 758.00 2943.00
1966 639.50 504.00 338.50 81.50 13.50 8.50 0.00 0.00 6.00 90.50 362.00 595.50 2639.50
1967 609.00 431.50 432.50 469.00 79.00 27.00 0.00 0.00 0.00 65.00 313.50 606.00 3032.50
1968 690.00 307.50 301.50 140.50 68.50 0.00 0.00 4.50 2.50 128.00 402.00 691.00 2736.00
1969 694.50 523.00 380.50 213.00 21.50 2.00 0.00 0.00 2.00 155.50 375.50 518.50 2886.00
1970 495.50 369.50 282.50 267.50 43.00 4.50 0.00 0.00 6.00 159.50 321.50 635.50 2585.00
1971 599.50 453.50 377.50 226.50 97.50 15.00 0.00 0.00 32.00 219.50 394.50 710.50 3126.00
1972 722.50 410.50 204.50 190.50 57.00 6.50 0.00 0.00 20.00 141.50 475.50 782.00 3010.50
1973 681.00 364.00 430.00 133.50 20.50 4.00 0.00 0.00 0.00 100.50 429.50 559.00 2722.00
1974 593.00 474.50 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 0.00 58.00 407.50 596.50 2129.50
1975 623.00 446.00 410.50 341.00 55.50 2.00 0.50 0.00 b 0.00 176.50 441.00 609.50 3105.50
1976 603.50 416.00 386.00 255.50 3.00 5.00 0.00 1.50 2.00 67.50 293.50 609.50 2643.00
1977 677.50 352.50 416.00 83.00 160.50 1.00 0.00 0.00 10.50 81.50 350.50 481.50 2614.50
1978 448.00 367.63 a 203.50 233.00 21.00 0.00 0.00 0.00 15.50 47.00 440.50 710.00 2486.13
1979 613.00 449.50 300.00 222.00 57.50 1.50 0.00 0.00 0.00 104.00 400.00 540.50 2688.00
1980 488.00 343.50 338.50 180.00 65.50 17.50 0.00 0.00 4.50 137.50 373.00 577.00 2525.00
1981 553.00 363.00 357.00 172.00 30.00 0.50 0.00 0.00 11.00 169.00 325.50 534.50 2515.50
1982 689.00 0.00 z 437.50 286.00 16.00 20.50 2.50 0.00 18.50 107.00 481.00 585.00 2643.00
1983 633.00 356.50 331.00 284.00 84.50 0.00 1.00 1.50 17.00 33.00 372.00 509.00 2622.50
1984 545.00 459.50 249.50 197.50 27.00 14.50 0.00 0.00 2.50 181.50 400.50 604.00 2681.50
1985 686.00 406.50 437.50 96.00 49.00 10.00 2.50 0.00 24.50 135.00 478.50 678.00 3003.50
1986 459.00 319.50 185.50 159.50 62.00 0.00 0.00 0.00 69.50 77.00 283.50 584.00 2199.50
1987 602.50 410.50 337.50 70.50 35.50 1.50 1.50 0.00 0.00 29.50 354.00 563.00 2406.00
1988 562.00 347.50 261.50 176.50 101.00 0.00 z 0.00 0.00 3.50 39.00 334.50 570.00 2395.50
1989 640.50 510.50 328.50 137.00 52.50 1.50 0.00 0.00 33.50 134.00 354.50 620.00 2812.50
1990 603.50 531.00 306.50 85.50 77.50 6.50 0.00 4.00 0.00 50.50 426.00 754.50 2845.50
1991 637.50 326.00 474.50 201.50 70.50 4.00 0.00 0.00 0.00 92.00 303.00 670.50 2779.50
1992 721.00 311.50 249.00 93.00 0.00 10.50 0.00 0.00 0.00 37.50 367.50 655.00 2445.00
1993 644.50 455.50 188.50 183.00 37.50 18.50 0.00 0.00 5.50 59.00 410.50 631.00 2633.50
1994 532.50 486.50 266.50 141.50 48.00 2.00 0.00 0.00 4.00 116.00 531.00 673.00 2801.00
1995 481.50 331.00 355.00 197.00 85.00 18.50 0.00 0.00 2.50 55.50 0.00 z 493.00 2019.00
1996 553.00 333.50 262.00 157.50 32.00 1.50 0.00 0.00 5.00 141.00 310.00 486.00 2281.50
1997 538.50 365.00 236.50 143.50 14.97 b 3.00 0.00 0.00 0.00 110.00 303.50 576.00 2290.97
1998 508.50 431.00 297.50 205.50 166.50 4.00 0.00 0.00 14.00 112.50 378.00 642.00 2759.50
1999 612.50 474.00 410.50 207.00 47.53 a 22.00 0.00 0.50 0.00 51.67 a 302.00 531.00 2658.70
2000 519.50 399.50 293.50 109.50 68.50 1.50 0.00 2.50 12.00 0.00 z 406.50 g 526.50 1933.00
2001 600.50 442.00 231.50 240.50 2.50 0.00 0.00 0.00 0.00 41.00 269.00 534.50 2361.50
2002 594.00 368.00 325.50 145.50 60.50 0.00 0.00 0.00 8.50 105.00 311.50 505.50 2424.00
2003 459.00 408.50 265.50 317.50 90.00 0.00 0.00 0.00 0.00 26.00 423.00 535.50 2525.00
2004 585.50 429.50 152.50 133.00 7.00 0.00 0.00 0.00 19.50 142.00 384.00 559.00 2412.00
2005 620.00 329.50 239.00 232.00 62.00 22.00 0.00 0.00 4.50 82.50 273.50 512.00 2377.00
2006 485.00 368.00 466.00 236.00 19.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1574.00
Period of Record Statistics
MEAN 609.31 413.30 337.63 188.00 56.45 7.00 0.14 0.34 8.29 100.23 374.49 600.84 2704.48
S.D. 84.98 68.44 83.42 78.98 35.10 8.45 0.52 0.95 11.81 47.34 62.88 79.81 246.29
SKEW 0.01 0.00 -0.22 0.90 0.86 1.13 3.82 3.07 2.90 0.33 0.03 0.30 -0.15
MAX 829.00 552.50 482.50 469.00 166.50 29.50 2.50 4.50 69.50 219.50 531.00 782.00 3126.00
MIN 448.00 246.00 152.50 47.50 0.00 0.00 0.00 0.00 0.00 26.00 238.97 442.50 2199.50
NO YRS 58 57 56 57 57 56 56 57 56 56 55 58 50