HETCH HETCHY, CALIFORNIA

Monthly Total Growing Degree Days

(043939)

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
1931 1.50 f 0.00 29.50 159.50 381.50 414.50 880.50 794.00 376.00 182.00 77.50 0.00 3295.00
1932 0.00 6.50 17.00 61.00 189.00 446.50 610.00 615.00 586.00 234.00 87.50 0.00 2852.50
1933 0.00 0.00 0.50 81.00 124.50 358.50 747.00 715.50 436.00 410.00 70.00 0.00 2943.00
1934 0.00 4.50 193.50 237.50 319.00 348.00 724.00 754.00 535.00 255.50 57.00 5.50 3433.50
1935 0.00 10.00 9.00 69.50 223.50 504.50 595.50 703.00 580.50 166.00 1.00 5.00 2867.50
1936 0.00 0.00 85.50 158.00 294.00 407.00 710.50 720.50 491.50 254.00 51.50 0.00 3172.50
1937 0.00 0.00 3.00 50.50 307.50 400.50 704.00 687.50 496.00 260.83 b 3.60 e 1.00 2914.43
1938 0.00 0.00 1.00 79.00 254.50 486.00 683.00 672.50 521.00 143.00 1.50 4.00 2845.50
1939 1.50 0.00 49.50 200.50 237.00 426.00 709.00 747.50 462.00 176.00 43.50 2.00 3054.50
1940 0.00 0.00 44.00 103.00 343.00 572.50 606.00 686.00 349.00 253.00 14.50 10.50 2981.50
1941 0.00 0.00 20.50 32.50 224.00 295.00 648.50 541.50 323.00 134.50 68.50 0.00 2288.00
1942 0.00 0.00 14.00 29.50 125.00 364.00 708.00 658.00 460.00 270.00 45.00 0.00 2673.50
1943 0.00 19.00 16.50 102.50 271.50 252.50 638.50 567.00 574.00 270.00 30.50 0.00 2742.00
1944 0.00 0.00 a 12.00 34.50 246.00 238.50 600.50 633.00 527.00 268.50 2.50 0.00 2562.50
1945 0.00 0.00 0.00 121.50 160.50 380.50 724.50 627.00 538.50 252.00 23.00 0.00 2827.50
1946 0.50 0.00 14.00 153.50 213.00 378.50 666.50 706.00 484.50 122.00 0.00 0.00 2738.50
1947 0.00 18.00 57.50 130.50 366.50 384.50 573.00 557.00 561.50 190.00 6.50 0.00 2845.00
1948 0.50 0.00 0.00 34.00 120.00 337.50 572.50 565.00 472.00 231.00 9.50 0.00 2342.00
1949 0.00 0.00 0.00 171.00 200.00 474.00 660.30 a 565.50 513.00 237.00 157.00 0.00 2977.80
1950 0.00 12.50 16.03 b 150.50 281.50 g 386.50 713.00 668.00 439.50 268.00 76.00 1.50 2731.53
1951 0.50 8.00 32.50 117.00 222.88 b 448.50 657.50 634.00 566.50 177.00 60.50 0.00 2924.88
1952 0.00 0.00 13.00 103.00 298.00 277.50 671.00 623.50 477.50 370.00 31.50 0.00 2865.00
1953 1.00 3.11 a 20.00 93.50 73.50 264.50 693.00 546.00 553.50 211.50 37.00 2.50 2499.11
1954 0.00 34.00 17.50 190.00 325.00 351.00 518.50 g 521.00 425.50 261.00 53.00 0.00 2178.00
1955 0.00 5.00 20.50 21.43 b 216.50 388.50 547.50 716.00 510.50 292.00 61.50 0.00 2779.43
1956 0.00 g 0.00 31.00 87.00 194.30 c 398.50 613.00 512.00 472.50 119.00 i 42.00 0.00 2350.30
1957 0.00 a 14.50 3.50 h 79.29 b 124.00 c 489.83 a 601.06 d 543.50 460.50 90.50 8.04 b 0.00 i 2411.20
1958 0.00 7.00 1.50 96.50 315.37 e 345.00 a 586.50 741.00 462.12 d 373.50 60.50 13.00 3001.98
1959 0.00 0.00 48.50 199.00 163.00 497.00 786.00 649.00 382.50 302.50 40.50 3.00 3071.00
1960 0.00 0.00 87.00 102.50 188.07 a 601.03 a 755.37 a 629.00 537.93 a 220.10 a 21.67 c 0.00 a 3142.67
1961 0.00 a 2.69 b 6.50 128.50 135.88 a 550.00 729.50 662.50 377.07 a 255.23 a 17.68 b 0.00 b 2865.56
1962 3.58 e 0.00 d 8.61 d 177.69 d 119.35 a 414.31 a 599.16 b 580.00 476.25 b 217.00 b 59.46 b 0.00 a 2655.41
1963 0.00 a 22.40 c 0.50 15.00 236.63 a 294.00 525.40 b 526.50 495.00 a 228.00 7.22 c 0.00 a 2350.65
1964 0.00 a 1.00 25.50 62.07 a 159.13 a 335.69 a 612.00 641.00 389.48 a 357.02 a 5.77 d 0.52 a 2589.18
1965 0.00 16.15 b 10.16 b 98.33 c 183.00 280.50 557.00 554.00 292.24 a 312.14 b 37.76 a 0.00 d 2341.28
1966 0.00 c 0.00 b 47.03 b 179.00 0.00 z 392.31 d 556.00 694.00 437.00 243.87 a 63.89 c 0.00 a 2613.10
1967 0.00 a 4.85 b 4.00 0.00 274.00 326.00 683.50 725.50 480.00 c 243.35 a 88.33 c 0.00 b 2829.53
1968 0.52 a 20.94 b 34.00 96.00 187.00 458.00 672.18 a 481.00 453.50 199.00 6.72 a 0.00 b 2608.87
1969 0.00 a 0.00 e 28.50 i 72.86 b 307.50 328.00 608.00 642.00 498.33 c 97.50 34.44 c 0.00 2588.63
1970 0.00 a 3.77 b 28.00 25.50 301.50 426.00 700.00 688.00 409.14 a 210.80 a 26.11 c 0.00 c 2818.82
1971 0.00 c 25.31 b 18.60 a 33.10 a 107.50 357.00 660.50 719.00 455.50 171.53 a 15.52 a 0.00 c 2563.56
1972 0.00 a 12.83 c 121.50 52.50 286.50 476.50 722.00 634.50 365.50 130.72 a 1.11 c 0.00 c 2803.65
1973 0.00 z 0.00 b 0.00 d 101.50 335.00 490.50 653.00 608.63 a 412.76 a 181.41 d 6.96 b 0.00 d 2789.76
1974 0.00 a 0.00 b 13.00 40.50 274.50 479.00 601.50 622.00 566.00 245.50 12.69 d 0.00 c 2854.69
1975 7.75 a 2.69 b 8.27 a 4.00 266.50 0.00 z 471.00 f 599.00 556.55 a 150.41 d 9.11 b 0.00 a 1604.28
1976 1.00 g 0.54 b 15.50 34.50 301.50 395.00 636.02 a 411.50 407.14 b 208.22 a 106.15 d 0.00 a 2516.07
1977 0.00 a 49.26 a 5.00 158.50 59.50 524.00 650.48 a 679.50 402.86 b 297.60 a 28.45 a 0.00 b 2855.15
1978 0.00 2.69 b 65.50 34.50 237.00 381.00 594.68 a 594.50 267.00 f 0.00 z 39.64 b 0.00 z 1949.52
1979 0.00 z 0.00 b 30.00 46.00 290.37 a 461.00 602.43 a 552.00 542.68 b 245.42 a 1.67 c 0.00 a 2771.56
1980 0.00 a 6.69 c 0.00 94.00 145.70 a 287.50 613.00 594.17 a 424.29 b 303.28 a 78.75 b 1.60 b 2548.98
1981 3.10 a 6.46 b 0.00 137.50 217.53 b 549.50 677.00 701.50 531.21 a 126.58 a 35.36 b 0.00 a 2985.74
1982 0.00 12.50 0.00 74.00 267.00 337.50 527.50 588.00 337.00 116.00 5.89 b 0.00 2265.39
1983 3.00 3.63 a 4.50 6.50 264.00 374.50 445.88 a 567.00 479.50 190.50 20.50 0.00 2359.51
1984 3.00 2.50 19.00 54.50 336.50 354.00 688.50 658.00 545.00 92.50 0.50 0.00 2754.00
1985 0.00 10.00 1.00 190.00 215.00 524.50 682.50 573.00 268.00 183.00 29.00 0.00 2676.00
1986 2.00 27.00 108.50 61.00 234.50 477.00 521.50 667.00 274.50 209.50 43.50 0.00 2626.00
1987 0.00 6.50 10.50 219.00 251.00 537.50 560.50 700.50 520.50 383.00 11.00 0.00 3200.00
1988 0.50 23.50 41.00 102.50 213.50 422.00 783.50 726.00 549.00 419.50 60.50 0.00 3341.50
1989 0.00 5.00 23.50 250.50 187.00 453.00 683.00 575.00 419.50 175.50 19.82 b 0.00 2791.82
1990 0.00 1.50 51.50 129.50 182.50 412.50 726.50 624.00 454.50 314.00 35.00 2.50 2934.00
1991 0.00 27.00 0.00 21.00 128.50 349.00 682.00 614.50 592.00 413.00 61.03 a 0.00 2888.03
1992 0.00 9.00 8.00 168.00 432.00 473.50 585.50 703.00 507.00 306.50 19.00 0.00 3211.50
1993 0.00 0.00 86.50 76.00 257.00 369.00 549.50 593.00 495.50 245.00 48.50 0.00 2720.00
1994 0.00 0.00 43.00 121.50 229.00 493.50 751.50 737.50 486.50 147.50 6.50 0.00 z 3016.50
1995 0.00 61.00 10.00 76.55 a 133.00 360.50 588.50 643.50 520.50 313.50 111.50 1.50 2820.05
1996 0.00 31.00 43.00 140.50 235.50 467.00 745.50 704.00 444.50 260.50 32.50 0.00 3104.00
1997 1.00 2.50 129.50 103.50 405.00 441.00 0.00 z 700.00 541.00 209.50 75.00 0.00 2608.00
1998 0.00 0.00 34.00 84.50 39.50 277.00 629.50 631.00 368.50 103.50 0.00 3.50 2171.00
1999 0.00 0.00 0.00 84.00 220.00 287.50 f 562.50 410.00 538.00 378.50 87.50 5.00 2285.50
2000 0.00 11.39 a 49.50 177.00 360.50 592.00 647.00 719.50 437.00 229.00 0.50 2.00 3225.39
2001 0.00 0.00 c 99.50 95.50 533.00 565.50 690.00 776.03 a 570.50 400.00 60.00 0.00 3790.03
2002 0.00 23.50 48.50 155.50 254.00 557.00 796.00 693.50 556.00 227.50 54.50 0.00 3366.00
2003 7.50 1.00 44.00 28.50 301.50 545.00 802.50 667.50 647.50 443.00 1.50 1.00 3490.50
2004 0.00 0.00 210.00 158.50 294.00 538.50 759.50 749.50 535.00 228.50 2.50 0.00 3476.00
2005 0.00 0.00 34.00 35.50 204.50 315.50 738.00 669.50 332.50 193.00 25.50 0.00 2548.00
2006 0.00 34.50 3.00 70.50 353.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 461.50
Period of Record Statistics
MEAN 0.51 8.07 32.41 99.00 238.89 415.88 655.36 638.66 472.53 239.48 36.49 0.91 2846.26
S.D. 1.45 12.19 41.36 59.61 89.01 89.61 79.36 79.07 80.55 83.98 31.95 2.27 327.01
SKEW 3.73 2.09 2.33 0.45 0.33 0.12 0.11 -0.57 -0.53 0.44 1.06 3.51 0.34
MAX 7.75 61.00 210.00 250.50 533.00 601.03 880.50 794.00 647.50 443.00 157.00 13.00 3790.03
MIN 0.00 0.00 0.00 0.00 39.50 238.50 445.88 410.00 268.00 90.50 0.00 0.00 2171.00
NO YRS 71 76 74 76 74 73 72 75 74 73 75 72 60