MT HAMILTON, CALIFORNIA

Monthly Total Heating Degree Days

(045933)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 79.00 59.00 159.50 219.00 k 452.00 f 920.81 d 1218.31
1949 581.50 o 576.00 k 0.00 z 96.50 x 385.90 b 111.72 a 17.00 75.50 111.50 317.00 232.00 738.50 1989.12
1950 1003.50 563.11 a 689.50 426.50 303.80 a 207.32 b 11.88 a 18.50 z 0.00 z 0.00 z 351.96 b 501.68 a 4059.26
1951 725.18 c 0.00 z 683.55 a 416.00 338.50 83.50 22.00 35.50 40.50 348.23 a 533.28 a 871.50 4097.74
1952 956.00 717.50 877.50 516.21 a 300.50 372.00 3.00 0.50 111.00 161.00 632.50 838.00 5485.71
1953 630.50 669.00 779.50 637.50 654.10 a 384.50 4.00 166.00 90.50 0.00 z 0.00 z 593.50 4609.10
1954 817.00 402.00 790.00 387.50 241.50 285.50 11.50 146.00 168.50 288.00 453.00 725.00 4715.50
1955 892.00 754.44 a 702.00 776.50 406.00 236.50 140.02 a 4.50 87.69 d 232.00 583.97 a 771.79 b 5587.41
1956 822.50 804.15 e 672.38 b 570.50 398.50 200.00 44.36 b 46.00 79.50 416.50 333.00 484.50 4871.89
1957 919.00 557.50 691.50 513.00 457.50 112.00 18.00 89.50 130.00 423.50 558.00 567.50 5037.00
1958 681.50 665.50 909.00 542.00 298.24 b 251.00 75.84 c 0.00 c 104.46 b 143.08 e 422.40 e 188.50 k 4093.02
1959 656.17 d 750.81 a 203.50 s 297.22 c 467.87 d 128.08 d 0.00 g 64.21 c 163.00 g 199.84 c 248.40 e 341.00 i 2812.60
1960 864.90 a 722.21 c 525.28 d 529.50 417.35 d 18.75 b 0.00 i 40.19 d 13.00 j 279.55 c 454.00 g 458.00 j 3397.73
1961 481.10 e 613.57 e 621.00 f 461.79 b 177.00 v 134.48 a 13.50 h 14.00 f 132.86 b 212.50 h 564.44 c 653.30 d 3041.53
1962 630.33 d 726.92 b 802.79 b 360.00 c 467.67 b 123.21 b 0.00 z 56.04 e 58.45 a 257.30 a 456.60 e 497.60 b 4436.93
1963 683.11 c 441.54 b 781.09 c 768.33 c 384.06 d 214.00 72.16 b 43.00 73.89 c 169.50 n 565.96 d 507.33 e 4534.46
1964 808.38 e 605.98 e 633.50 f 545.40 e 454.27 e 254.40 e 34.50 f 40.96 c 94.50 f 138.93 d 498.50 i 566.00 g 2848.32
1965 495.50 g 553.00 d 555.50 f 481.00 f 350.19 d 177.00 i 41.00 f 29.93 b 0.00 z 106.95 a 553.39 b 724.48 d 2317.94
1966 771.68 c 479.50 i 613.59 b 271.11 c 232.50 c 153.60 e 72.33 d 36.96 e 99.00 i 121.00 h 359.00 k 271.00 q 2151.77
1967 477.50 h 513.13 e 752.04 d 938.57 b 237.50 h 198.60 e 0.00 g 0.00 e 25.38 d 162.75 e 378.33 c 813.23 a 3782.04
1968 680.50 493.54 b 566.78 a 418.39 b 347.20 a 87.50 13.29 c 101.30 c 78.10 a 226.00 525.54 b 816.33 d 4354.48
1969 738.66 b 848.50 229.00 p 564.83 a 235.82 c 155.00 g 0.00 2.58 a 53.00 357.53 a 341.50 635.50 e 3777.92
1970 704.50 538.50 619.47 b 606.50 204.17 b 149.50 0.00 3.00 72.50 279.00 490.00 844.00 4511.14
1971 604.00 577.00 657.50 601.50 492.00 169.50 11.00 24.50 136.50 422.00 576.43 b 917.94 d 5189.87
1972 656.74 d 573.00 416.50 537.00 251.00 85.50 26.87 a 69.00 109.14 a 401.93 b 634.82 b 798.85 e 4560.34
1973 838.11 c 685.48 a 860.25 a 426.50 200.00 103.45 a 6.41 b 51.00 95.69 a 274.00 728.79 a 678.26 b 4947.94
1974 754.33 d 652.00 672.18 a 561.72 a 300.91 b 80.00 74.00 f 4.00 w 2.00 m 257.30 a 511.07 b 734.70 a 4524.23
1975 593.50 681.00 814.00 759.50 270.00 107.00 79.10 b 50.00 5.50 390.50 572.50 525.50 4848.10
1976 495.50 650.00 710.00 631.00 220.50 192.50 20.00 185.00 126.50 157.58 a 272.50 443.50 4104.58
1977 622.00 443.00 774.50 371.00 606.50 91.00 27.90 a 20.00 186.50 190.50 422.50 560.00 4315.40
1978 682.00 612.50 533.50 622.00 252.00 112.00 40.00 76.00 146.00 96.00 570.00 723.50 4465.50
1979 824.50 699.00 634.00 556.00 220.50 77.50 58.00 83.50 33.50 298.50 517.50 486.91 b 4489.41
1980 633.50 540.12 a 733.50 483.00 441.50 244.00 61.50 18.00 82.76 a 213.50 356.50 403.00 4210.88
1981 590.50 562.00 728.00 454.50 317.00 76.00 0.50 4.00 62.00 372.50 502.50 582.80 a 4252.30
1982 795.00 584.50 819.00 573.00 251.00 202.00 39.50 13.50 181.00 324.50 591.50 675.00 5049.50
1983 599.00 623.26 a 753.50 702.00 291.00 96.00 76.00 34.50 82.50 228.00 616.55 a 726.00 4828.31
1984 500.65 a 615.00 517.00 547.50 170.50 118.50 25.00 16.00 28.50 416.50 686.00 827.18 a 4468.33
1985 676.50 568.50 818.00 339.50 442.50 55.34 a 7.00 20.50 254.50 302.50 0.00 z 0.00 z 3484.84
1986 493.50 577.00 483.00 549.50 322.50 87.50 31.00 2.00 310.00 249.00 403.50 606.00 4114.50
1987 796.50 639.00 687.50 329.48 a 275.12 c 72.50 109.00 51.50 78.00 171.00 623.50 897.97 a 4731.07
1988 706.00 448.50 531.50 482.00 406.50 106.00 0.50 3.50 30.00 61.00 503.00 655.50 3934.00
1989 582.50 621.00 510.00 230.00 234.00 86.50 19.63 a 39.50 98.50 284.00 354.00 404.50 3464.13
1990 761.50 702.00 583.00 367.50 409.00 139.50 6.00 101.00 84.50 144.50 468.50 794.50 4561.50
1991 629.00 388.50 914.00 634.50 471.72 a 190.00 5.50 32.00 13.00 207.50 413.50 619.00 4518.22
1992 618.00 642.50 671.50 354.50 105.00 181.00 63.55 a 16.50 38.50 199.50 484.00 847.50 4222.05
1993 834.93 a 744.50 561.00 570.50 399.00 207.00 32.00 25.50 49.50 194.50 483.50 663.50 4765.43
1994 556.40 b 720.00 534.00 484.00 384.00 113.50 0.00 4.00 93.50 299.50 824.00 758.00 4770.90
1995 772.00 360.50 716.00 651.00 455.50 250.86 a 34.50 17.00 65.50 127.00 286.03 a 647.00 4382.90
1996 680.00 627.50 542.50 465.50 329.50 102.00 1.00 5.00 98.50 356.50 541.50 685.50 4435.00
1997 714.50 636.50 448.50 499.00 162.50 170.50 20.50 37.50 65.00 308.50 550.50 763.00 4376.50
1998 730.00 801.00 697.00 664.00 688.50 261.00 24.50 4.50 139.00 340.50 657.00 683.50 5690.50
1999 612.50 693.26 a 833.00 616.55 a 376.50 186.50 34.62 a 92.00 13.97 a 91.00 450.00 559.50 4559.39
2000 709.00 688.75 a 646.00 425.69 a 323.43 a 55.00 52.50 14.50 128.50 357.50 623.00 471.00 4494.87
2001 722.00 812.00 524.50 636.00 88.50 105.00 28.50 20.50 35.00 140.50 482.00 785.00 4379.50
2002 758.00 515.50 672.00 497.50 338.50 66.50 3.00 22.00 97.50 231.00 370.50 758.50 4330.50
2003 397.00 644.50 593.00 739.50 358.00 94.50 1.50 32.00 38.00 106.50 664.00 758.00 4426.50
2004 726.00 757.50 355.00 415.86 a 346.00 88.00 6.00 33.50 106.00 370.00 605.17 a 606.00 4415.03
2005 638.08 a 612.50 567.50 565.00 364.50 265.34 a 16.50 0.00 128.50 274.50 368.79 a 609.00 4410.22
2006 719.00 513.85 a 923.50 601.00 239.00 85.50 10.50 8.78 a 65.50 273.00 532.50 681.00 4653.14
2007 743.00 662.50 419.00 476.00 218.50 88.00 29.50 22.00 193.00 351.50 324.83 a 832.00 4359.83
2008 854.50 632.50 629.50 542.50 340.00 86.00 9.82 a 14.00 40.50 186.00 396.50 723.50 4455.32
2009 494.50 702.00 698.00 559.00 182.00 238.00 15.00 31.00 78.50 330.31 b 484.00 731.60 a 4543.91
2010 650.00 640.50 649.00 642.32 b 519.00 151.00 12.00 38.23 a 88.00 304.00 595.00 695.00 4984.05
2011 547.67 a 709.69 b 754.50 596.79 b 516.67 a 253.89 c 60.00 0.00 b 5.00 h 224.48 b 634.80 e 642.50 4940.98
2012 543.02 a 656.50 724.50 504.00 279.00 186.50 28.42 a 0.00 a 4.50 272.00 430.34 a 795.67 a 4424.44
2013 668.05 a 617.50 304.00 k 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 1285.55
Period of Record Statistics
MEAN 693.38 625.40 668.38 529.23 342.02 152.16 30.15 38.29 92.79 256.58 497.24 682.40 4580.37
S.D. 122.39 104.92 131.66 132.13 122.00 77.70 29.98 39.83 58.81 95.03 124.35 130.96 408.97
SKEW 0.10 -0.38 -0.15 0.26 0.49 0.88 1.44 1.75 1.23 -0.07 -0.04 -0.28 0.54
MAX 1003.50 848.50 923.50 938.57 688.50 384.50 140.02 185.00 310.00 423.50 824.00 920.81 5690.50
MIN 397.00 360.50 355.00 230.00 88.50 18.75 0.00 0.00 4.50 61.00 232.00 403.00 3464.13
NO YRS 62 62 58 62 62 62 57 62 57 59 59 59 46