MOUNT DIABLO JUNCTION, CALIFORNIA

Monthly Total Growing Degree Days

(045915)

Base Temperature = 40 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 414.00 661.00 564.00 1059.50 1016.50 982.00 821.00 358.50 158.50 6035.00
1953 293.00 293.50 250.50 371.50 401.50 599.00 1128.50 841.50 904.00 704.00 403.00 356.50 6546.50
1954 164.50 391.50 186.50 521.00 655.00 710.00 1110.50 810.50 806.50 647.50 460.50 219.00 6683.00
1955 120.00 193.50 302.50 231.50 557.00 673.00 820.50 1131.50 982.50 739.00 376.00 217.50 6344.50
1956 165.50 136.00 282.50 384.50 561.50 767.50 981.00 905.00 909.50 607.50 550.50 418.50 6669.50
1957 145.50 238.52 a 297.50 434.00 482.50 922.00 1041.50 952.00 890.00 562.00 351.00 315.50 6632.02
1958 275.50 270.00 161.50 439.00 669.00 710.50 0.00 z 1207.00 985.50 890.50 497.00 523.50 6629.00
1959 292.50 161.50 461.50 631.00 562.00 873.00 1189.50 1048.50 830.50 799.00 630.00 354.50 7833.50
1960 157.50 214.50 379.00 424.00 509.00 985.00 1179.00 1059.50 964.50 634.50 306.00 247.50 7060.00
1961 337.50 237.50 210.00 475.50 461.00 936.72 a 1174.38 a 1018.35 a 842.00 741.50 385.00 227.50 7046.96
1962 306.00 184.00 194.50 531.72 a 485.50 800.00 1101.50 990.50 848.50 615.50 477.00 372.00 6906.72
1963 187.50 406.00 263.50 212.00 495.00 731.00 919.00 1027.50 935.50 658.00 356.00 350.50 6541.50
1964 196.00 305.50 289.00 421.50 500.00 702.00 1033.50 1052.50 841.50 861.00 273.00 241.00 6716.50
1965 235.50 320.00 305.50 386.00 625.17 a 623.50 1025.00 1072.00 769.14 a 910.50 396.00 198.00 6866.30
1966 211.50 177.50 387.00 628.00 691.00 869.00 1005.50 1215.00 918.00 792.50 440.50 267.00 7602.50
1967 313.00 349.50 284.50 118.00 679.50 740.50 1230.00 1298.00 1012.50 815.50 558.00 224.50 7623.50
1968 247.50 370.00 396.50 509.50 576.00 909.00 1077.00 891.00 893.00 688.50 373.50 143.50 7075.00
1969 204.00 90.50 322.50 390.52 a 520.50 f 640.50 1136.00 1222.50 1039.00 586.42 a 542.00 318.50 6492.43
1970 252.00 346.00 422.00 371.50 713.50 815.00 1182.50 1075.00 998.50 673.00 448.50 134.50 7432.00
1971 273.00 305.00 280.50 346.50 488.50 728.50 1128.00 1124.00 938.50 668.00 380.50 68.00 6729.00
1972 184.00 284.50 506.00 427.00 672.00 928.20 e 1056.00 1040.00 804.44 c 593.00 297.00 171.00 6963.14
1973 127.00 237.00 172.00 460.50 700.00 879.00 1008.00 1034.50 776.00 662.50 202.50 265.50 6524.50
1974 155.00 172.50 244.50 343.45 a 565.50 833.00 990.00 1047.00 1029.31 a 768.50 382.50 193.00 6724.26
1975 261.50 196.50 185.00 227.00 700.50 783.00 957.50 1009.50 1058.79 a 638.00 366.50 368.00 6751.79
1976 406.00 298.00 327.50 262.50 f 706.50 320.00 o 1049.19 b 896.50 924.50 872.28 b 593.50 490.50 6564.47
1977 272.28 a 414.81 a 271.50 605.00 412.30 a 934.82 b 1074.00 1075.38 b 862.50 805.00 519.00 351.00 7597.60
1978 282.00 257.00 438.00 340.50 691.00 807.00 1137.50 1089.00 882.50 934.00 377.50 198.50 7434.50
1979 154.50 197.50 317.50 421.50 690.00 958.00 1081.50 919.00 1015.50 668.00 346.50 385.00 7154.50
1980 233.50 321.50 266.00 402.00 464.50 565.00 973.50 937.75 a 790.50 0.00 z 510.50 369.00 5833.75
1981 376.50 290.00 262.50 453.50 643.50 990.00 1039.02 a 1003.00 918.00 582.50 413.00 306.50 7278.02
1982 147.50 263.50 192.50 375.00 619.00 577.50 926.00 993.50 844.00 667.50 300.00 206.50 6112.50
1983 335.00 235.50 258.00 286.00 610.00 699.50 821.50 979.50 933.00 769.00 318.00 204.50 6449.50
1984 306.00 238.00 450.00 371.50 726.00 792.50 1168.00 1042.00 1047.50 560.50 263.00 137.50 7102.50
1985 217.00 301.50 217.50 577.50 536.30 a 940.50 1130.00 920.50 683.50 606.50 254.00 335.00 6719.80
1986 372.00 269.00 440.50 406.50 608.00 765.00 917.00 1083.00 676.50 708.50 0.00 z 278.50 6524.50
1987 174.50 271.00 292.00 605.50 690.04 d 823.00 731.50 929.00 916.50 0.00 z 0.00 z 142.00 5575.04
1988 203.50 401.50 0.00 z 0.00 z 538.50 737.50 1155.50 966.50 932.50 747.50 260.50 284.50 6228.00
1989 172.50 149.00 259.00 488.00 579.00 707.50 998.00 912.50 772.00 671.00 499.00 384.00 6591.50
1990 211.00 164.00 357.50 487.00 495.50 747.50 1068.50 956.50 874.00 807.00 485.50 202.00 6856.00
1991 254.00 402.89 a 145.50 359.00 478.00 636.00 1019.00 0.00 z 1029.50 886.50 478.50 285.50 5974.39
1992 232.00 291.50 315.00 523.50 807.00 714.00 912.50 1117.00 898.00 736.00 467.00 164.50 7178.00
1993 140.50 184.50 425.00 403.00 558.50 801.00 941.00 929.50 911.50 707.00 389.00 181.87 a 6572.37
1994 303.00 140.50 404.00 415.00 495.50 791.00 1001.50 1005.00 866.00 615.50 154.50 165.00 6356.50
1995 157.50 307.50 228.50 329.00 391.00 669.00 889.00 1056.00 868.50 764.00 580.00 285.41 b 6525.41
1996 291.50 302.50 380.00 502.50 619.00 803.50 1196.00 1122.00 881.50 659.50 378.50 263.50 7400.00
1997 236.50 285.50 480.50 458.50 817.00 783.50 1014.50 927.00 928.00 648.00 437.50 233.50 7250.00
1998 207.00 124.00 299.00 349.00 315.50 575.50 982.50 1139.50 875.00 612.00 297.50 178.00 5954.50
1999 252.00 156.00 169.50 355.00 515.00 707.00 863.00 912.50 1037.00 879.50 462.00 310.00 6618.50
2000 194.00 204.50 323.00 474.00 593.50 873.00 817.00 1004.00 822.50 558.50 240.00 282.00 6386.00
2001 174.50 108.50 373.00 278.00 849.00 831.00 845.00 921.50 835.50 710.00 334.50 105.00 6365.50
2002 140.00 262.00 301.00 399.00 558.50 828.50 1041.00 1022.00 967.50 658.50 448.50 201.00 6827.50
2003 384.50 205.00 353.50 214.50 540.00 766.50 1151.00 924.00 928.50 834.00 237.50 152.00 6691.00
2004 139.50 148.00 570.00 496.50 546.00 734.00 978.00 937.00 898.50 507.50 251.00 154.50 6360.50
2005 139.00 170.50 324.00 315.50 517.50 604.50 1120.50 1088.00 712.00 613.50 389.50 222.00 6216.50
2006 148.50 266.00 87.00 265.00 648.93 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1415.43
Period of Record Statistics
MEAN 228.94 250.23 307.79 408.60 586.51 771.44 1029.74 1016.94 898.00 708.97 394.16 255.78 6828.25
S.D. 74.04 82.44 100.27 109.50 110.32 113.71 113.79 99.45 90.70 105.40 107.30 96.41 434.60
SKEW 0.54 0.17 0.29 -0.15 0.09 0.01 -0.46 0.50 -0.34 0.36 0.05 0.56 0.39
MAX 406.00 414.81 570.00 631.00 849.00 990.00 1230.00 1298.00 1058.79 934.00 630.00 523.50 7833.50
MIN 120.00 90.50 87.00 118.00 315.50 564.00 731.50 810.50 676.50 507.50 154.50 68.00 5954.50
NO YRS 54 54 53 53 54 53 53 53 54 52 52 54 45