HETCH HETCHY, CALIFORNIA

Monthly Total Growing Degree Days

(043939)

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
1931 58.00 f 111.00 256.50 437.50 691.50 714.50 1190.50 1104.00 676.00 484.00 173.50 3.50 5842.50
1932 7.50 78.00 237.00 270.00 457.00 746.50 920.00 925.00 886.00 541.00 365.00 27.50 5460.50
1933 14.00 4.50 115.00 292.50 302.00 656.00 1057.00 1025.50 736.00 712.50 325.50 106.00 5346.50
1934 105.00 136.00 499.50 526.50 616.00 643.50 1034.00 1064.00 820.00 534.50 224.50 82.00 6285.50
1935 9.50 82.50 83.50 280.50 518.00 804.50 905.50 1013.00 880.50 434.50 112.00 77.00 5201.00
1936 63.50 33.50 313.00 392.00 588.00 697.00 1020.50 1030.50 791.50 555.50 293.00 71.00 5849.00
1937 0.00 20.00 136.50 257.00 616.50 700.50 1014.00 997.50 796.00 561.21 b 144.00 e 111.00 5354.21
1938 78.00 31.50 60.50 287.50 533.50 786.00 993.00 982.50 821.00 420.50 160.50 113.50 5268.00
1939 76.50 36.00 196.50 482.50 528.50 722.50 1019.00 1057.50 758.00 432.00 287.50 151.50 5748.00
1940 76.00 56.50 245.50 332.50 649.50 872.50 916.00 996.00 649.00 527.00 166.50 142.50 5629.50
1941 61.50 101.50 215.00 200.00 533.50 594.00 958.50 851.50 622.50 385.50 273.50 63.50 4860.50
1942 27.00 28.50 174.00 230.00 363.00 664.00 1018.00 968.00 760.00 567.00 232.00 92.50 5124.00
1943 84.50 134.00 174.50 360.50 569.00 550.00 948.50 877.00 874.00 525.50 247.00 68.50 5413.00
1944 49.00 25.38 a 176.00 189.50 536.50 526.00 910.50 943.00 827.00 578.50 95.00 90.50 4946.88
1945 58.00 78.50 54.50 333.50 440.00 680.50 1034.50 937.00 836.50 559.50 126.50 36.00 5175.00
1946 78.00 44.00 145.00 380.00 510.00 678.50 976.50 1016.00 784.50 374.50 105.00 121.50 5213.50
1947 71.50 164.50 250.00 369.00 670.00 684.50 883.00 867.00 859.50 484.50 97.00 48.00 5448.50
1948 117.00 43.00 36.00 180.00 361.00 637.50 882.50 875.00 759.50 516.00 182.50 19.00 4609.00
1949 0.00 18.00 57.00 449.50 495.00 774.00 970.30 a 875.50 813.00 503.50 422.50 62.00 5440.30
1950 7.00 147.00 152.86 b 391.00 512.50 g 686.50 1023.00 978.00 736.50 565.00 315.00 163.00 5164.86
1951 39.00 95.50 201.00 355.50 486.91 b 748.50 967.50 944.00 866.50 461.00 225.50 19.00 5409.91
1952 1.00 51.50 88.00 352.50 602.00 570.50 981.00 933.50 768.00 680.00 185.00 16.50 5229.50
1953 103.00 125.48 a 162.50 291.50 289.00 555.50 1003.00 856.00 853.50 491.50 223.00 90.50 5044.48
1954 22.00 210.50 132.50 456.50 616.50 630.50 758.50 g 831.00 725.50 565.00 293.50 23.50 4507.00
1955 5.00 64.50 150.00 176.25 b 474.00 679.50 857.50 1026.00 810.50 599.50 199.50 60.50 5102.75
1956 30.50 g 25.50 221.00 278.00 457.25 c 698.50 923.00 822.00 772.50 287.00 i 246.00 82.50 4526.25
1957 4.13 a 123.00 78.00 h 304.29 b 372.00 c 789.83 a 911.06 d 853.50 759.50 366.00 141.96 b 43.50 i 4625.27
1958 45.50 103.50 43.00 295.50 614.04 e 642.93 a 896.50 1051.00 762.12 d 683.50 245.50 209.50 5592.58
1959 75.00 47.00 298.50 488.00 438.50 797.00 1096.00 959.00 680.00 607.50 323.50 122.00 5932.00
1960 17.00 34.00 270.00 316.50 470.68 a 901.03 a 1065.37 a 939.00 837.93 a 506.85 a 137.22 c 60.97 a 5556.55
1961 98.17 a 99.08 b 128.50 357.50 413.85 a 843.50 1039.50 972.50 677.07 a 521.83 a 166.61 b 29.40 b 5347.50
1962 59.62 e 54.25 d 67.17 d 442.50 d 361.67 a 712.24 a 909.16 b 890.00 776.25 b 517.38 b 255.00 b 113.67 a 5158.89
1963 19.12 a 230.16 c 105.00 108.00 516.67 a 594.00 835.40 b 836.50 795.00 a 527.50 127.78 c 98.17 a 4793.28
1964 29.97 a 91.00 136.00 255.00 a 392.15 a 620.17 a 922.00 951.00 687.93 a 660.82 a 118.85 d 72.85 a 4937.73
1965 49.00 151.85 b 146.98 b 268.33 c 448.50 579.00 867.00 864.00 589.14 a 614.12 b 209.48 a 49.94 d 4837.35
1966 12.18 c 22.62 b 255.48 b 440.50 0.00 z 692.31 d 866.00 1004.00 737.00 553.87 a 255.00 c 66.65 a 4905.60
1967 67.68 a 154.00 b 115.50 21.00 531.00 602.50 993.50 1035.50 780.00 c 551.28 a 320.56 c 9.62 b 5182.14
1968 66.13 a 161.11 b 201.50 326.50 465.00 755.00 982.18 a 789.00 753.00 489.50 131.90 a 14.97 b 5135.79
1969 25.32 a 1.22 e 114.50 i 298.93 b 611.50 628.00 918.00 952.00 798.33 c 369.00 231.67 c 65.00 4898.96
1970 49.60 a 144.85 b 204.00 178.00 597.00 726.00 1010.00 998.00 709.14 a 486.18 a 226.67 c 16.05 c 5345.49
1971 68.09 c 123.31 b 175.67 a 221.90 a 362.50 651.50 970.50 1029.00 751.00 372.52 a 163.45 a 0.00 c 4889.42
1972 24.28 a 146.12 c 362.00 273.00 578.50 776.50 1032.00 944.50 665.50 406.10 a 91.11 c 49.82 c 5349.43
1973 0.00 z 43.62 b 31.57 d 337.50 633.00 790.50 963.00 918.63 a 712.76 a 465.00 d 96.96 b 52.81 d 5045.36
1974 50.12 a 67.85 b 175.00 239.50 552.00 779.00 911.50 932.00 866.00 534.00 151.73 d 40.41 c 5299.10
1975 123.48 a 50.62 b 99.20 a 99.00 541.00 0.00 z 721.00 f 909.00 856.55 a 379.46 d 158.04 b 82.67 a 3299.02
1976 94.00 g 88.61 b 142.50 200.50 611.50 692.50 946.02 a 721.50 707.14 b 517.70 a 338.08 d 66.65 a 5032.70
1977 40.82 a 191.85 a 86.50 424.50 251.00 824.00 960.48 a 989.50 698.04 b 592.62 a 244.14 a 121.33 b 5424.77
1978 55.00 98.54 b 264.50 192.00 527.00 681.00 904.68 a 904.50 507.00 f 0.00 z 141.43 b 0.00 z 3768.65
1979 0.00 z 17.77 b 161.50 271.00 568.85 a 757.00 912.43 a 862.00 842.68 b 524.93 a 147.78 c 100.75 a 5166.69
1980 73.37 a 127.71 c 91.50 305.00 393.70 a 586.00 923.00 904.17 a 724.29 b 573.50 a 290.36 b 155.00 b 5147.59
1981 137.43 a 124.38 b 104.00 384.00 510.97 b 849.50 987.00 1011.50 831.21 a 368.90 a 242.14 b 79.05 a 5630.08
1982 2.00 115.00 90.50 258.50 557.50 637.00 837.50 898.00 633.00 400.00 97.50 b 14.00 4540.50
1983 96.00 81.41 a 90.50 147.50 519.00 674.50 755.88 a 877.00 779.50 499.50 137.00 35.00 4692.79
1984 112.50 106.50 251.00 234.00 634.50 654.00 998.50 968.00 845.00 320.50 77.50 23.00 5225.00
1985 38.00 133.00 94.00 453.00 514.00 818.50 992.50 883.00 564.00 469.50 118.50 70.00 5148.00
1986 143.50 113.50 312.00 277.50 508.00 777.00 831.50 977.00 552.00 513.50 286.50 54.50 5346.50
1987 17.50 91.00 160.50 493.50 547.00 837.50 870.50 1010.50 820.50 692.00 153.50 30.50 5724.50
1988 55.00 225.50 250.00 330.00 456.00 706.00 1093.50 1036.00 849.00 729.50 199.00 89.00 6018.50
1989 8.50 87.50 229.00 494.00 474.00 753.00 993.00 885.00 713.50 433.50 240.00 b 72.00 5383.00
1990 29.50 45.50 258.00 404.50 481.00 708.50 1036.50 934.00 754.50 622.50 208.00 43.50 5526.00
1991 31.00 244.00 28.50 232.00 365.50 649.00 992.00 924.50 892.00 673.00 250.34 a 55.50 5337.34
1992 52.00 126.50 193.00 466.00 742.00 771.50 895.50 1013.00 807.00 604.50 185.50 8.00 5864.50
1993 27.50 92.50 326.50 343.50 565.00 652.50 859.50 903.00 795.50 546.50 215.00 42.50 5369.50
1994 99.50 33.50 278.50 344.50 503.50 793.50 1061.50 1047.50 786.50 438.50 49.50 0.00 z 5436.50
1995 26.50 260.50 149.50 273.10 a 394.00 646.00 898.50 953.50 820.50 623.50 395.00 104.50 5545.10
1996 88.50 184.00 208.50 380.50 541.50 761.00 1055.50 1014.00 744.50 502.50 211.50 82.00 5774.00
1997 51.00 114.50 386.50 345.00 715.00 741.00 0.00 z 1010.00 841.00 498.50 235.50 21.50 4959.50
1998 58.00 8.50 195.00 213.50 251.50 571.50 939.50 941.00 660.50 394.50 102.00 53.00 4388.50
1999 79.50 32.00 108.00 245.50 504.00 506.00 f 872.50 720.00 838.00 685.00 290.50 103.00 4478.00
2000 124.50 110.30 a 259.00 449.00 656.00 891.00 957.00 1029.50 737.00 484.50 129.00 129.00 5955.80
2001 74.00 29.12 c 307.00 263.50 843.00 865.50 1000.00 1086.03 a 870.50 705.50 278.50 23.50 6346.15
2002 72.00 163.00 191.00 392.50 534.00 857.00 1106.00 1003.50 856.00 535.50 329.00 72.50 6112.00
2003 211.00 111.50 252.00 162.50 569.00 845.00 1112.50 977.50 947.50 748.00 109.00 60.50 6106.00
2004 51.00 34.00 467.00 431.00 604.00 838.50 1069.50 1059.50 835.00 455.50 114.50 48.00 6007.50
2005 11.00 58.00 189.00 234.50 475.50 613.50 1048.00 979.50 632.50 494.50 256.50 65.50 5058.00
2006 12.50 197.00 75.00 247.50 661.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1193.00
Period of Record Statistics
MEAN 55.16 95.30 183.09 312.06 517.33 712.82 965.36 948.64 771.03 524.93 204.62 68.34 5369.81
S.D. 41.05 61.37 97.22 104.58 112.01 91.53 79.36 79.13 81.86 97.89 82.12 42.39 420.99
SKEW 0.98 0.62 0.81 -0.11 -0.08 0.10 0.11 -0.57 -0.57 0.23 0.38 0.73 0.16
MAX 211.00 260.50 499.50 526.50 843.00 901.03 1190.50 1104.00 947.50 748.00 422.50 209.50 6346.15
MIN 0.00 1.22 28.50 21.00 251.00 526.00 755.88 720.00 552.00 320.50 49.50 0.00 4388.50
NO YRS 71 76 74 76 74 73 72 75 74 73 75 72 60