MOUNT DIABLO JUNCTION, CALIFORNIA

Monthly Total Growing Degree Days

(045915)

Base Temperature = 50 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
1952 0.00 z 0.00 z 0.00 z 141.50 357.50 266.50 749.50 706.50 682.00 511.00 140.50 15.00 3570.00
1953 57.00 62.50 60.50 134.00 125.00 303.00 818.50 531.50 604.00 394.50 143.00 80.00 3313.50
1954 6.50 167.50 23.50 235.50 347.50 418.50 800.50 500.50 506.50 337.50 179.00 20.50 3543.50
1955 8.00 29.00 79.50 43.50 264.00 375.00 510.50 821.50 682.50 429.00 157.00 24.50 3424.00
1956 2.50 6.00 61.00 150.50 261.50 468.50 671.00 595.00 609.50 321.50 268.00 155.50 3570.50
1957 14.00 44.07 a 56.50 161.50 184.00 622.00 731.50 642.00 590.00 252.00 79.00 73.00 3449.57
1958 34.50 38.50 0.00 194.50 359.00 410.50 0.00 z 897.00 685.50 580.50 233.00 224.00 3657.00
1959 45.00 19.50 172.00 331.00 259.00 573.00 879.50 738.50 530.50 489.00 330.50 111.00 4478.50
1960 17.00 14.00 115.00 156.50 212.50 685.00 869.00 749.50 664.50 324.50 71.50 38.50 3917.50
1961 72.00 33.00 13.50 211.50 158.50 636.72 a 864.38 a 708.35 a 542.00 441.50 128.00 32.00 3841.46
1962 103.00 44.50 25.50 244.66 a 179.50 500.00 791.50 680.50 548.50 308.00 202.50 121.50 3749.66
1963 21.50 130.00 27.50 30.50 197.00 431.00 609.00 717.50 635.50 348.50 96.00 97.00 3341.00
1964 20.00 60.50 98.00 160.00 229.50 407.50 723.50 742.50 541.50 551.00 66.00 32.50 3632.50
1965 53.50 77.50 61.50 157.50 325.50 a 324.50 715.00 762.00 469.14 a 600.50 127.00 47.50 3721.14
1966 22.50 7.50 133.00 330.00 381.50 569.00 695.50 905.00 618.00 482.50 167.00 49.50 4361.00
1967 83.50 104.50 64.50 0.00 376.00 446.00 920.00 988.00 712.50 505.50 277.00 67.00 4544.50
1968 70.00 100.50 132.00 223.00 279.00 609.00 767.00 581.00 593.00 381.50 110.50 13.00 3859.50
1969 55.50 4.00 118.50 125.69 a 272.50 f 340.50 826.00 912.50 739.00 277.45 a 246.00 65.50 3710.64
1970 18.00 99.50 159.00 110.50 404.50 515.00 872.50 765.00 698.50 367.50 161.00 17.00 4188.00
1971 86.50 92.50 65.00 85.50 188.00 428.50 818.00 814.00 638.50 379.50 113.50 0.00 3709.50
1972 22.50 48.00 211.50 146.00 369.50 628.20 e 746.00 730.00 504.44 c 283.00 64.50 24.50 3778.14
1973 5.50 35.00 8.50 179.00 390.00 579.00 698.00 724.50 476.00 356.00 27.00 28.50 3507.00
1974 8.50 19.00 50.00 92.59 a 268.00 533.00 680.00 737.00 729.31 a 467.00 105.00 12.50 3701.90
1975 94.00 48.50 22.00 29.50 405.50 483.00 647.50 699.50 758.79 a 332.50 114.50 106.50 3741.79
1976 161.00 79.50 98.00 62.00 f 396.50 170.00 o 739.19 b 586.50 624.50 562.28 b 309.00 191.00 3747.47
1977 67.17 a 170.07 a 54.50 310.00 131.23 a 634.82 b 764.00 765.38 b 562.50 495.00 240.50 88.00 4283.17
1978 26.00 57.50 146.50 94.50 381.00 507.00 827.50 779.00 582.50 624.00 142.50 25.50 4193.50
1979 0.00 24.50 82.00 136.00 386.50 658.00 771.50 609.00 715.50 361.50 87.50 135.00 3967.00
1980 21.00 56.00 35.00 135.50 182.00 265.00 663.50 627.75 a 490.50 0.00 z 212.00 136.50 2824.75
1981 124.50 63.50 41.50 183.00 335.50 690.00 729.02 a 693.00 618.00 272.50 149.00 48.00 3947.52
1982 11.00 52.50 21.00 160.50 312.50 279.50 616.00 683.50 544.00 357.50 65.00 13.50 3116.50
1983 98.00 25.00 25.50 44.00 320.00 399.50 511.50 669.50 633.00 459.00 73.50 11.00 3269.50
1984 91.00 31.50 156.00 108.50 416.50 495.00 858.00 732.00 747.50 253.00 31.50 13.50 3934.00
1985 36.50 114.00 33.00 296.00 235.08 a 640.50 820.00 610.50 383.50 299.50 102.50 104.50 3675.58
1986 96.50 65.50 178.00 130.50 317.50 465.00 607.00 773.00 376.50 398.50 0.00 z 34.50 3442.50
1987 7.00 69.00 62.50 311.00 384.63 d 523.00 421.50 619.00 616.50 0.00 z 0.00 z 6.50 3020.63
1988 50.50 148.00 0.00 z 0.00 z 259.50 445.50 845.50 656.50 632.50 440.50 48.00 104.00 3630.50
1989 32.50 27.00 39.00 224.50 274.00 407.50 688.00 602.50 472.00 364.50 217.50 112.50 3461.50
1990 31.50 44.00 102.50 196.50 197.00 447.50 758.50 646.50 574.00 497.00 205.00 46.00 3746.00
1991 22.00 130.67 a 13.50 97.00 189.50 336.00 709.00 0.00 z 729.50 585.00 197.00 39.50 3048.67
1992 19.00 63.50 43.50 228.00 497.00 414.00 602.50 807.00 598.00 426.50 171.50 4.50 3875.00
1993 13.50 25.50 141.50 115.00 258.50 501.50 631.00 619.50 611.50 397.00 136.50 15.50 a 3466.50
1994 72.50 5.00 139.00 146.00 200.50 491.00 691.50 695.00 566.00 305.50 10.00 22.00 3344.00
1995 6.50 94.50 22.50 94.00 114.50 374.50 579.00 746.00 568.50 454.00 280.00 53.45 b 3387.45
1996 79.50 105.50 116.00 223.50 309.00 504.00 886.00 812.00 581.50 363.50 103.50 22.00 4106.00
1997 32.00 54.00 190.50 161.50 507.00 483.50 704.50 617.00 628.00 340.50 156.00 23.50 3898.00
1998 11.50 0.00 71.50 142.00 46.50 277.50 672.50 829.50 575.00 302.00 38.00 20.00 2986.00
1999 30.00 6.00 4.50 150.50 218.00 407.50 553.00 602.50 737.00 569.50 176.50 62.50 3517.50
2000 0.50 27.50 90.00 190.00 290.50 573.00 507.00 694.00 522.50 261.00 47.50 50.50 3254.00
2001 41.00 9.00 112.50 74.50 539.00 531.00 535.00 611.50 535.50 402.00 107.50 0.00 3498.50
2002 8.00 58.00 80.50 142.00 266.00 528.50 731.00 712.00 667.50 354.50 149.00 14.50 3711.50
2003 95.00 9.50 80.50 28.50 252.00 466.50 841.00 614.00 628.50 524.00 29.00 1.50 3570.00
2004 9.00 2.00 284.50 223.00 236.50 434.00 668.00 627.00 599.50 224.00 31.50 6.00 3345.00
2005 5.00 1.00 83.00 59.50 217.00 305.00 810.50 778.00 412.00 303.50 129.00 28.50 3132.00
2006 8.50 72.00 1.50 69.50 339.97 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 491.47
Period of Record Statistics
MEAN 41.27 55.13 81.28 153.76 287.65 472.42 719.74 706.94 598.02 402.28 139.48 53.53 3690.22
S.D. 37.19 43.38 60.74 79.07 102.71 113.00 113.79 99.45 90.70 103.47 78.32 50.64 360.31
SKEW 1.06 0.88 0.97 0.38 0.18 0.01 -0.46 0.50 -0.34 0.39 0.48 1.37 0.43
MAX 161.00 170.07 284.50 331.00 539.00 690.00 920.00 988.00 758.79 624.00 330.50 224.00 4544.50
MIN 0.00 0.00 0.00 0.00 46.50 265.00 421.50 500.50 376.50 224.00 10.00 0.00 2986.00
NO YRS 54 54 53 53 54 53 53 53 54 52 52 54 45