CHICO UNIV FARM, CALIFORNIA

Monthly Total Growing Degree Days

(041715)

Base Temperature = 50 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
1906 21.00 n 109.00 121.50 270.00 383.37 a 535.00 984.50 873.50 653.00 455.50 117.50 19.50 4522.37
1907 19.50 119.50 53.00 314.50 440.00 610.00 846.00 792.50 577.50 487.00 129.50 35.50 4424.50
1908 11.50 22.00 156.50 337.50 390.00 603.50 1022.50 827.00 407.50 l 357.00 172.50 4.50 3904.50
1909 52.50 30.00 53.00 315.50 454.50 734.00 836.00 809.50 693.50 360.63 a 147.93 a 4.00 4491.06
1910 1.50 17.50 218.00 375.54 b 613.50 301.00 q 914.50 853.50 471.50 g 317.00 h 174.50 34.62 a 3203.15
1911 13.00 5.50 186.50 224.50 372.50 682.50 971.50 760.50 529.50 370.00 131.00 20.00 4267.00
1912 32.00 90.00 75.00 171.00 510.50 723.50 887.50 818.50 604.00 290.50 108.50 8.50 4319.50
1913 9.00 47.92 b 111.00 257.50 529.00 707.00 971.50 984.00 764.00 454.50 123.00 15.00 4973.42
1914 33.50 39.00 278.50 326.50 605.50 699.50 891.50 821.50 550.00 395.00 151.00 0.00 4791.50
1915 9.00 34.00 200.00 274.50 373.50 718.50 887.50 882.00 605.00 429.50 107.00 17.00 4537.50
1916 4.00 114.00 209.00 342.93 a 420.00 644.00 728.50 f 803.50 632.50 277.50 32.00 13.00 3492.43
1917 0.00 36.50 61.00 210.50 353.50 722.00 993.00 903.50 661.50 556.50 108.50 28.00 4634.50
1918 9.00 20.00 106.00 238.00 426.00 877.00 823.00 818.50 597.50 396.50 55.50 0.00 4367.00
1919 9.00 26.50 84.00 298.00 596.00 672.00 905.50 827.00 616.50 286.50 71.00 11.00 4403.00
1920 28.00 59.50 59.50 209.00 483.50 680.00 794.00 871.00 606.50 262.00 48.50 5.17 d 4106.67
1921 5.00 41.50 143.50 229.50 407.50 756.00 883.50 742.00 601.00 444.50 147.00 19.00 4420.00
1922 1.50 3.50 38.00 186.00 475.00 714.50 923.00 760.50 730.00 327.00 10.50 17.00 4186.50
1923 18.00 57.50 141.00 205.00 450.50 521.50 797.50 783.50 674.50 320.50 140.00 0.00 4109.50
1924 3.00 57.50 30.00 267.00 563.50 685.50 801.00 774.50 621.00 293.50 62.50 3.50 4162.50
1925 32.50 50.00 208.50 285.52 a 553.50 774.00 928.00 792.50 512.00 324.50 33.00 12.00 4506.02
1926 3.00 56.50 318.00 421.00 569.00 849.00 927.00 791.00 509.00 395.50 201.00 38.50 5078.50
1927 13.00 55.50 131.00 270.00 480.00 722.50 866.00 766.00 584.50 447.00 132.00 9.50 4477.00
1928 17.00 36.00 220.00 270.00 655.50 757.00 947.50 876.00 682.00 408.00 90.50 7.50 4967.00
1929 4.50 35.50 144.50 214.50 515.00 658.50 858.50 867.00 643.50 505.00 182.00 77.00 4705.50
1930 4.00 124.00 209.00 347.50 428.00 738.00 883.00 819.00 577.00 400.00 207.50 18.00 4755.00
1931 25.00 84.00 232.00 394.00 697.00 699.00 1053.50 925.00 606.00 403.00 131.50 1.50 5251.50
1932 10.00 59.00 231.50 242.50 512.00 710.50 873.50 856.50 801.50 420.00 210.00 4.50 4931.50
1933 0.00 10.00 142.00 326.00 370.00 687.00 999.00 911.50 568.50 529.00 122.50 9.82 a 4675.32
1934 15.00 55.50 311.00 402.00 588.00 688.50 892.00 893.50 726.00 422.50 140.50 29.00 5163.50
1935 5.00 43.00 62.00 249.00 512.50 826.50 873.00 913.50 715.00 378.50 48.50 5.50 4632.00
1936 26.50 38.50 187.50 316.50 535.00 673.50 915.00 877.50 696.00 485.00 145.50 6.00 4902.50
1937 0.00 a 9.00 134.50 199.50 556.50 690.50 938.78 a 863.00 674.00 415.00 131.00 43.00 4654.78
1938 5.00 28.50 42.50 212.50 537.00 773.00 926.00 803.50 715.50 335.00 48.00 19.00 4445.50
1939 3.50 15.50 163.00 430.00 548.00 705.50 899.50 859.00 688.50 376.50 128.00 42.00 4859.00
1940 32.00 61.00 148.50 260.50 572.50 847.00 834.50 844.00 580.50 411.50 49.00 45.00 4686.00
1941 17.00 56.50 148.50 188.50 466.00 625.50 900.00 748.50 548.00 322.00 155.69 a 26.50 4202.69
1942 12.06 d 5.00 92.00 187.00 346.50 673.50 899.00 823.00 616.50 444.50 100.00 17.50 4216.56
1943 14.50 72.50 142.50 258.50 471.00 541.00 854.50 727.00 738.00 364.50 117.00 2.50 4303.50
1944 3.00 12.00 146.00 169.00 468.50 604.00 842.00 828.50 759.00 466.00 46.00 24.50 4368.50
1945 3.50 47.00 41.50 276.50 417.50 697.50 957.00 810.50 703.50 475.50 75.00 20.50 4525.50
1946 3.00 13.50 75.50 307.50 472.50 615.00 870.50 815.00 670.50 322.00 46.00 13.00 4224.00
1947 9.50 66.50 167.00 324.00 619.50 651.00 785.50 739.50 747.00 380.50 44.00 4.00 4538.00
1948 46.50 36.00 31.00 108.50 316.00 635.50 796.00 737.50 609.50 394.00 83.00 1.50 3795.00
1949 0.00 24.50 70.00 360.60 e 472.00 730.50 811.00 713.00 670.00 359.50 209.00 3.50 4423.60
1950 40.00 83.00 97.00 311.00 506.50 633.00 901.00 849.50 636.00 395.50 197.50 57.00 4707.00
1951 1.00 33.50 127.50 289.50 506.50 710.00 815.00 792.50 716.00 349.50 113.50 18.50 4473.00
1952 8.50 28.00 81.50 271.00 527.00 519.50 949.00 826.50 743.50 526.50 95.50 9.50 4586.00
1953 65.50 33.50 92.00 234.50 293.50 541.50 897.00 714.00 729.50 369.50 144.50 16.00 4131.00
1954 0.00 50.50 50.00 324.00 525.50 611.00 876.50 676.00 557.50 352.50 85.00 11.00 4119.50
1955 0.00 11.00 100.00 113.50 490.50 641.50 787.50 836.00 632.50 409.50 105.00 36.50 4163.50
1956 8.00 3.00 102.50 253.50 453.50 695.50 874.50 764.50 641.50 340.00 110.50 5.50 4252.50
1957 4.50 101.00 130.00 244.50 440.50 794.50 870.00 724.50 657.00 291.50 43.00 7.50 4308.50
1958 11.50 114.00 37.50 247.00 568.00 674.50 901.50 988.50 740.50 521.00 168.50 80.00 5052.50
1959 55.50 41.50 185.00 380.50 448.50 798.50 964.00 826.00 624.50 507.50 147.00 15.00 4993.50
1960 20.50 32.00 188.50 275.00 450.00 849.50 965.50 837.50 703.50 406.50 117.00 21.00 4866.50
1961 15.00 57.50 90.00 285.00 403.00 820.00 912.50 891.00 618.50 408.50 79.00 10.50 4590.50
1962 23.50 26.50 66.00 386.50 441.00 714.50 880.50 809.00 670.00 400.50 137.50 29.00 4584.50
1963 5.50 180.50 76.00 135.50 491.50 685.50 796.00 818.50 729.50 429.50 85.00 0.50 4433.50
1964 1.50 22.50 105.50 260.00 447.50 636.50 872.00 850.00 601.00 512.00 59.00 80.50 4448.00
1965 5.00 22.50 115.00 268.00 495.00 614.00 846.00 836.50 529.00 476.50 143.50 0.00 4351.00
1966 14.50 15.50 166.00 390.00 587.00 741.00 780.00 900.00 706.00 458.00 146.00 13.00 4917.00
1967 24.50 31.50 89.50 27.00 513.50 656.00 949.50 999.00 780.00 451.00 215.50 34.00 4771.00
1968 19.00 167.50 164.50 288.00 496.00 784.50 884.50 749.50 701.00 377.50 83.50 4.00 4719.50
1969 9.50 10.50 118.50 234.50 617.50 668.50 910.50 878.50 721.00 315.00 127.00 44.50 4655.50
1970 78.50 79.00 144.50 172.00 584.00 741.00 911.00 816.50 639.00 344.50 125.00 7.00 4642.00
1971 29.00 34.00 99.50 217.00 405.00 664.50 950.50 903.00 660.00 345.00 70.50 0.00 4378.00
1972 2.50 72.50 253.17 a 255.50 556.50 766.00 895.50 876.50 575.50 366.50 55.00 15.00 4690.17
1973 14.00 50.50 53.00 303.50 0.00 z 802.24 a 932.67 b 798.52 b 630.50 0.00 z 0.00 z 10.00 h 3584.93
1974 33.50 k 0.00 z 119.50 l 186.50 506.00 694.00 809.00 851.50 724.44 c 455.50 64.29 b 9.50 4300.73
1975 0.50 19.50 61.00 70.34 a 468.62 a 653.00 760.50 719.00 704.50 295.50 63.00 17.64 b 3833.10
1976 5.00 33.00 98.50 150.00 d 542.00 632.50 829.00 643.52 b 608.00 430.68 c 186.43 b 2.50 4161.12
1977 0.00 93.33 a 69.00 329.50 282.50 769.50 810.50 828.50 585.50 429.00 103.50 26.50 4327.33
1978 31.50 57.00 215.93 b 173.57 b 482.05 a 635.00 846.30 a 849.63 d 431.50 f 443.50 g 93.75 b 1.00 g 3384.73
1979 10.33 d 19.00 147.52 b 151.50 f 498.77 c 0.00 z 845.02 b 750.41 b 746.38 a 416.29 c 0.00 z 18.50 i 3433.71
1980 0.00 z 62.14 a 89.26 b 225.00 g 432.28 d 0.00 z 562.50 j 0.00 z 338.00 m 326.00 i 81.00 l 0.00 z 583.68
1981 29.00 l 75.04 c 75.71 e 200.50 l 534.75 a 589.50 h 544.50 j 797.50 677.40 e 199.50 h 83.00 n 16.50 k 2160.40
1982 0.00 j 60.00 94.50 208.00 569.07 c 447.50 i 531.50 j 768.80 a 636.00 350.00 72.00 3.00 2761.37
1983 4.00 41.50 106.50 138.50 486.50 657.00 475.50 j 563.50 j 672.00 222.00 q 97.50 23.00 i 2203.50
1984 26.50 18.00 198.50 207.50 573.50 a 690.00 928.00 833.00 735.50 285.41 b 59.50 0.50 j 4555.41
1985 0.00 b 74.50 50.00 331.55 a 452.08 a 773.00 891.50 690.00 538.50 372.50 95.00 4.81 b 4273.45
1986 35.00 116.00 235.00 279.50 503.50 691.50 812.50 849.00 485.50 403.50 159.50 4.50 4575.00
1987 0.50 38.00 105.00 406.50 631.00 749.00 717.00 812.50 649.50 537.50 105.50 33.00 4785.00
1988 9.00 121.00 160.00 306.50 411.50 673.00 972.00 813.50 700.50 47.50 z 119.50 31.50 4318.00
1989 6.00 43.50 150.00 380.00 504.00 692.50 844.00 761.00 605.00 340.00 115.50 9.00 4450.50
1990 15.00 39.50 196.50 414.50 460.50 666.00 929.00 849.00 692.50 349.50 i 82.50 0.00 k 4345.00
1991 8.50 119.50 48.00 192.50 389.00 600.00 899.00 724.00 745.00 374.00 n 150.50 0.00 3876.00
1992 1.00 127.00 173.50 371.00 703.50 687.00 782.00 878.50 697.00 486.00 108.00 6.50 5021.00
1993 3.50 10.00 0.00 z 0.00 z 486.50 611.50 857.50 793.00 674.00 324.50 j 89.50 15.50 3541.00
1994 9.50 13.50 191.00 295.50 482.50 664.00 856.50 753.00 665.00 349.50 11.50 0.00 4291.50
1995 49.50 87.00 81.50 228.50 399.00 606.00 831.50 795.50 693.50 450.00 231.50 58.50 4512.00
1996 10.50 111.50 162.00 282.50 474.00 709.50 949.50 889.00 618.00 367.50 117.00 52.50 4743.50
1997 39.00 44.50 220.50 296.50 658.00 721.50 854.00 793.50 694.50 383.00 115.00 7.00 4827.00
1998 18.50 8.00 152.50 221.50 292.00 580.50 879.00 856.00 722.50 343.00 62.50 22.00 4158.00
1999 17.50 16.00 64.00 260.00 465.50 626.50 750.50 763.63 a 705.54 b 464.00 121.00 j 9.00 4142.17
2000 17.50 39.74 b 159.81 b 347.68 b 507.50 776.25 b 723.33 d 781.95 b 636.00 254.00 j 53.50 f 1.50 g 3989.76
2001 4.65 a 21.00 b 229.83 b 227.31 d 690.04 d 588.00 f 586.00 j 550.50 k 432.50 l 336.50 l 166.20 e 5.50 o 1339.02
2002 6.50 76.00 105.50 330.00 334.00 j 0.00 z 872.00 809.00 707.00 226.00 n 76.50 o 10.00 r 2906.00
2003 41.50 k 28.00 126.00 g 120.50 f 333.00 l 555.00 i 619.00 l 556.00 j 504.00 j 394.50 i 55.00 l 19.00 n 28.00
2004 2.00 k 33.50 j 230.00 j 251.00 h 333.50 l 497.50 j 460.50 n 447.50 n 482.50 i 223.00 m 65.50 k 23.50 r 0.00
2005 2.00 l 68.00 h 113.50 n 156.00 m 272.00 m 0.00 z 583.50 m 633.50 i 417.50 j 295.50 j 124.00 l 0.50 s 0.00
2006 20.00 k 51.00 j 18.50 j 163.50 j 411.50 l 493.50 k 476.50 o 411.50 n 399.00 k 179.50 l 64.50 l 26.00 r 0.00
2007 1.50 p 16.50 q 151.50 p 162.00 n 252.00 r 493.50 k 504.50 m 395.00 r 388.00 m 246.00 n 119.00 p 10.00 p 0.00
2008 0.00 z 0.00 z 0.00 z 146.00 l 354.50 n 210.50 u 552.00 k 539.50 l 448.50 j 299.00 j 70.50 o 6.50 s 0.00
2009 11.50 p 34.00 i 59.50 n 175.00 m 264.50 q 459.00 j 461.50 n 332.00 r 456.50 k 198.00 j 47.50 n 0.00 s 0.00
2010 0.00 n 31.00 m 44.50 p 71.00 o 178.50 l 324.00 p 494.50 l 307.00 r 399.00 i 238.50 k 94.50 m 34.50 r 0.00
2011 4.00 p 10.50 p 42.00 o 155.00 k 160.00 o 375.00 k 461.50 m 619.00 h 379.50 p 213.50 m 26.00 s 4.00 p 0.00
2012 0.00 u 40.50 j 57.50 l 106.00 r 379.50 k 400.50 l 418.00 p 597.00 j 366.00 o 304.00 k 57.50 q 9.00 t 0.00
2013 0.00 m 12.50 m 78.50 s 12.50 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 0.00
Period of Record Statistics
MEAN 14.68 50.93 131.56 267.48 491.16 690.91 879.51 818.33 655.67 398.35 111.52 18.20 4529.93
S.D. 15.60 37.14 65.37 79.68 87.51 74.82 65.57 65.16 67.82 67.99 49.22 18.28 304.50
SKEW 1.73 1.17 0.57 -0.26 0.06 0.09 -0.05 0.12 -0.31 0.21 0.24 1.62 0.10
MAX 78.50 180.50 318.00 430.00 703.50 877.00 1053.50 999.00 801.50 556.50 231.50 80.50 5251.50
MIN 0.00 3.00 30.00 27.00 282.50 519.50 717.00 643.52 485.50 262.00 10.50 0.00 3795.00
NO YRS 92 97 95 93 95 90 91 94 92 84 90 86 76