CHICO UNIV FARM, CALIFORNIA

Monthly Total Growing Degree Days

(041715)

Base Temperature = 40 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 159.50 n 388.00 392.00 564.00 693.37 a 835.00 1294.50 1183.50 953.00 765.50 372.00 263.00 7703.87
1907 157.00 386.50 322.00 614.50 750.00 910.00 1156.00 1102.50 877.50 797.00 421.50 228.00 7722.50
1908 255.50 240.00 425.00 637.50 700.00 903.50 1332.50 1137.00 587.50 l 667.00 439.50 135.50 6873.00
1909 297.50 249.50 333.50 615.50 764.50 1034.00 1146.00 1119.50 993.50 670.63 a 407.07 a 125.50 7756.70
1910 113.50 206.00 521.50 675.54 b 923.50 431.00 q 1224.50 1163.50 701.50 g 547.00 h 454.00 259.88 a 5541.92
1911 201.00 170.00 479.00 514.50 682.50 982.50 1281.50 1070.50 829.50 680.00 412.00 198.50 7501.50
1912 257.50 351.00 363.00 467.50 820.50 1023.50 1197.50 1128.50 904.00 600.50 405.00 170.00 7688.50
1913 151.00 251.46 b 367.50 555.00 839.00 1007.00 1281.50 1294.00 1064.00 764.50 386.50 176.50 8137.96
1914 256.50 271.50 584.00 626.50 915.50 999.50 1201.50 1131.50 850.00 705.00 441.50 115.00 8098.00
1915 161.50 268.50 508.00 574.50 683.50 1018.50 1197.50 1192.00 905.00 739.50 374.50 233.00 7856.00
1916 109.50 380.00 500.00 642.93 a 730.00 944.00 978.50 f 1113.50 932.50 587.50 253.50 135.00 6328.43
1917 95.00 267.50 287.50 492.50 663.50 1022.00 1303.00 1213.50 961.50 866.50 401.50 267.50 7841.50
1918 197.00 210.50 372.00 527.50 736.00 1177.00 1133.00 1128.50 897.50 706.50 290.00 118.50 7494.00
1919 191.00 214.00 342.00 598.00 906.00 972.00 1215.50 1137.00 916.50 587.00 338.50 135.50 7553.00
1920 276.50 314.50 330.00 500.50 793.50 980.00 1104.00 1181.00 906.50 571.00 311.00 176.81 d 7445.31
1921 163.00 258.50 451.50 518.00 717.00 1056.00 1193.50 1052.00 901.00 754.50 404.00 234.00 7703.00
1922 62.00 170.50 295.50 460.50 781.50 1014.50 1233.00 1070.50 1030.00 633.00 229.50 233.00 7213.50
1923 216.50 242.50 425.50 505.00 760.50 821.50 1107.50 1093.50 974.50 630.50 439.00 83.50 7300.00
1924 76.00 314.00 278.00 561.50 873.50 985.50 1111.00 1084.50 921.00 603.50 311.50 73.50 7193.50
1925 187.00 313.50 493.00 585.52 a 863.50 1074.00 1238.00 1102.50 812.00 634.50 294.50 156.00 7754.02
1926 88.50 299.00 628.00 721.00 879.00 1149.00 1237.00 1101.00 809.00 705.50 498.00 191.00 8306.00
1927 217.50 294.50 418.00 557.00 790.00 1022.50 1176.00 1076.00 884.50 757.00 413.00 127.50 7733.50
1928 183.00 294.50 529.00 566.50 965.50 1057.00 1257.50 1186.00 982.00 718.00 355.00 121.00 8215.00
1929 115.00 237.00 435.00 491.00 825.00 958.50 1168.50 1177.00 943.50 815.00 482.00 326.50 7974.00
1930 154.00 383.50 509.00 647.50 738.00 1038.00 1193.00 1129.00 877.00 710.00 497.00 192.50 8068.50
1931 239.50 353.00 541.50 694.00 1007.00 999.00 1363.50 1235.00 906.00 713.00 346.00 167.50 8565.00
1932 170.00 238.50 539.50 542.50 822.00 1010.50 1183.50 1166.50 1101.50 730.00 507.00 91.00 8102.50
1933 57.50 170.00 446.50 624.00 680.00 987.00 1309.00 1221.50 868.50 839.00 415.00 134.33 a 7752.33
1934 195.50 310.00 621.00 702.00 898.00 988.50 1202.00 1203.50 1026.00 732.50 423.00 256.00 8558.00
1935 176.50 270.00 305.00 548.00 822.50 1126.50 1183.00 1223.50 1015.00 677.50 300.50 194.50 7842.50
1936 238.50 260.50 462.00 602.00 845.00 973.50 1225.00 1187.50 996.00 795.00 438.50 143.50 8167.00
1937 10.33 a 165.00 407.00 499.00 866.50 990.50 1248.78 a 1173.00 974.00 725.00 429.00 257.00 7745.12
1938 170.00 216.50 312.00 510.50 847.00 1073.00 1236.00 1113.50 1015.50 645.00 303.00 196.00 7638.00
1939 169.00 165.00 436.50 730.00 858.00 1005.50 1209.50 1169.00 988.50 680.00 425.50 264.50 8101.00
1940 215.50 311.50 445.00 560.50 882.50 1147.00 1144.50 1154.00 880.50 721.50 306.00 281.50 8050.00
1941 231.50 304.00 454.50 484.00 776.00 925.50 1210.00 1058.50 848.00 632.00 394.14 a 215.50 7533.64
1942 128.02 d 186.50 378.00 486.00 655.00 973.50 1209.00 1133.00 916.50 754.50 369.50 175.00 7364.52
1943 198.00 298.00 433.00 558.00 781.00 841.00 1164.50 1037.00 1038.00 674.50 407.00 183.00 7613.00
1944 153.00 217.00 427.00 462.50 778.50 904.00 1152.00 1138.50 1059.00 776.00 302.50 263.50 7633.50
1945 131.50 286.50 277.50 565.50 727.50 997.50 1267.00 1120.50 1003.50 785.50 332.00 169.00 7663.50
1946 118.50 157.50 357.00 606.00 782.50 915.00 1180.50 1125.00 970.50 627.50 315.00 171.00 7326.00
1947 111.00 308.50 465.00 623.50 929.50 951.00 1095.50 1049.50 1047.00 690.50 284.00 128.50 7683.50
1948 270.50 200.50 267.00 387.50 626.00 935.50 1106.00 1047.50 909.50 704.00 349.00 111.00 6914.00
1949 18.00 174.50 359.50 660.60 e 782.00 1030.50 1121.00 1023.00 970.00 666.00 509.00 117.50 7431.60
1950 126.00 291.00 371.50 610.00 812.00 933.00 1211.00 1159.50 936.00 705.00 494.50 253.00 7902.50
1951 133.50 215.00 381.50 589.50 816.50 1010.00 1125.00 1102.50 1016.00 649.50 382.50 172.50 7594.00
1952 113.50 255.50 278.50 571.00 837.00 819.50 1259.00 1136.50 1043.50 836.50 306.50 186.50 7643.50
1953 325.00 264.50 359.50 519.00 603.50 841.50 1207.00 1024.00 1029.50 679.50 414.50 243.50 7511.00
1954 177.00 240.00 303.50 624.00 835.50 911.00 1186.50 986.00 857.50 662.50 343.50 100.00 7227.00
1955 69.00 169.00 376.50 386.00 800.50 941.50 1097.50 1146.00 932.50 719.50 327.00 237.50 7202.50
1956 206.00 138.00 388.00 540.50 763.50 995.50 1184.50 1074.50 941.50 641.00 400.50 178.50 7452.00
1957 106.50 321.50 426.00 544.50 750.50 1094.50 1180.00 1034.50 957.00 601.50 292.00 147.50 7456.00
1958 169.50 377.50 301.00 539.00 878.00 974.50 1211.50 1298.50 1040.50 831.00 434.50 377.00 8432.50
1959 287.00 254.50 495.00 680.50 758.50 1098.50 1274.00 1136.00 924.50 817.50 445.00 192.00 8363.00
1960 177.00 278.00 488.50 573.50 760.00 1149.50 1275.50 1147.50 1003.50 716.50 380.50 156.00 8106.00
1961 136.00 306.00 386.00 579.50 713.00 1120.00 1222.50 1201.00 918.50 717.00 335.00 127.50 7762.00
1962 163.00 222.50 330.00 686.50 751.00 1014.50 1190.50 1119.00 970.00 710.50 417.00 212.00 7786.50
1963 91.50 460.50 350.50 414.00 801.50 985.50 1106.00 1128.50 1029.50 739.50 324.50 59.00 7490.50
1964 137.50 247.00 357.00 558.50 754.50 936.50 1182.00 1160.00 901.00 822.00 275.00 289.50 7620.50
1965 161.50 232.00 425.00 558.00 805.00 914.00 1156.00 1146.50 829.00 786.50 419.00 72.50 7505.00
1966 169.00 193.50 430.50 690.00 897.00 1041.00 1090.00 1210.00 1006.00 768.00 412.00 184.50 8091.50
1967 196.50 249.50 363.00 281.00 823.50 956.00 1259.50 1309.00 1080.00 761.00 496.50 180.50 7956.00
1968 156.00 441.00 470.50 588.00 806.00 1084.50 1194.50 1059.50 1001.00 687.50 342.00 122.50 7953.00
1969 125.00 178.50 376.50 534.00 927.50 968.50 1220.50 1188.50 1021.00 625.00 399.00 266.50 7830.50
1970 297.00 339.00 445.50 469.00 894.00 1041.00 1221.00 1126.50 939.00 654.00 419.50 162.00 8007.50
1971 180.00 232.50 371.00 514.00 715.00 964.50 1260.50 1213.00 960.00 630.00 351.50 78.00 7470.00
1972 79.00 316.50 548.70 a 551.50 866.50 1066.00 1205.50 1186.50 875.50 668.50 297.50 107.50 7769.20
1973 132.50 312.00 325.00 601.00 0.00 z 1102.24 a 1242.67 b 1108.52 b 930.50 0.00 z 0.00 z 172.50 h 5754.43
1974 166.00 k 0.00 z 305.00 l 462.50 816.00 994.00 1119.00 1161.50 1024.44 c 765.50 336.96 b 137.50 6817.41
1975 101.50 206.50 322.50 339.31 a 777.58 a 953.00 1070.50 1029.00 1004.50 599.00 296.50 174.24 b 6874.13
1976 148.00 270.50 345.00 443.65 d 852.00 932.50 1139.00 953.52 b 908.00 740.68 c 451.61 b 180.50 7364.96
1977 62.00 326.15 a 314.50 629.50 591.50 1069.50 1120.50 1138.50 885.50 739.00 369.50 266.50 7512.65
1978 280.50 276.50 523.26 b 457.50 b 792.05 a 935.00 1156.30 a 1159.63 d 671.50 f 683.50 g 338.04 b 60.50 g 5918.77
1979 158.44 d 226.00 431.33 b 389.50 f 808.77 c 0.00 z 1155.02 b 1060.41 b 1046.38 a 725.18 c 0.00 z 156.50 i 5611.53
1980 0.00 z 315.38 a 374.14 b 455.00 g 739.98 d 0.00 z 772.50 j 0.00 z 508.00 m 546.00 i 247.00 l 0.00 z 1429.49
1981 157.00 l 311.92 c 368.42 e 380.50 l 844.75 a 809.50 h 754.50 j 1107.50 977.40 e 429.00 h 225.50 n 172.50 k 3609.99
1982 39.00 j 276.50 370.50 469.00 879.07 c 657.50 i 741.50 j 1078.80 a 936.00 660.00 299.00 167.00 5135.87
1983 122.50 281.50 401.00 427.50 794.00 957.00 685.50 j 773.50 j 972.00 362.00 q 347.00 173.00 i 4302.50
1984 176.00 213.50 508.00 505.50 883.50 a 990.00 1238.00 1143.00 1035.50 576.17 b 309.50 109.00 j 7578.67
1985 64.14 b 266.50 292.50 630.00 a 762.08 a 1073.00 1201.50 1000.00 838.50 682.50 262.50 86.59 b 7159.81
1986 274.00 348.50 530.00 578.00 813.50 991.50 1122.50 1159.00 785.50 713.50 446.00 145.00 7907.00
1987 102.00 264.00 384.50 706.50 941.00 1049.00 1027.00 1122.50 949.50 847.50 362.50 182.00 7938.00
1988 186.50 366.00 455.50 602.50 721.50 973.00 1282.00 1123.50 1000.50 67.50 z 400.50 220.50 7332.00
1989 120.00 214.50 441.50 680.00 814.00 992.50 1154.00 1071.00 905.00 650.00 393.50 173.00 7609.00
1990 174.00 166.00 479.50 714.50 770.50 966.00 1239.00 1159.00 992.50 569.50 i 324.50 78.50 k 6985.50
1991 169.00 392.50 276.00 492.00 698.50 900.00 1209.00 1034.00 1045.00 543.50 n 428.00 152.50 6796.50
1992 103.50 406.50 483.00 671.00 1013.50 987.00 1092.00 1188.50 997.00 796.00 383.50 137.00 8258.50
1993 138.00 200.50 0.00 z 0.00 z 796.50 911.50 1167.50 1103.00 974.00 534.50 j 321.50 162.50 5775.00
1994 205.50 195.50 485.50 594.00 792.50 964.00 1166.50 1063.00 965.00 659.50 176.00 103.50 7370.50
1995 282.00 336.50 353.00 519.00 709.00 906.00 1141.50 1105.50 993.50 760.00 531.50 275.00 7912.50
1996 209.00 342.00 456.00 574.50 784.00 1009.50 1259.50 1199.00 918.00 671.00 409.50 269.00 8101.00
1997 223.50 279.00 518.00 595.50 968.00 1021.50 1164.00 1103.50 994.50 693.00 406.00 165.00 8131.50
1998 241.00 227.00 435.00 513.50 602.00 880.50 1189.00 1166.00 1022.50 653.00 344.00 149.50 7423.00
1999 159.00 178.00 331.50 533.50 775.50 926.50 1060.50 1073.63 a 1005.54 b 774.00 307.50 j 195.00 7012.67
2000 221.50 294.30 b 442.55 b 647.68 b 817.50 1076.25 b 1033.33 d 1091.95 b 936.00 459.50 j 210.00 f 142.50 g 6561.06
2001 150.35 a 212.15 b 521.12 b 495.58 d 1000.04 d 828.00 f 796.00 j 750.50 k 612.50 l 526.50 l 424.20 e 111.00 o 2803.44
2002 161.00 309.00 367.50 625.00 544.00 j 0.00 z 1182.00 1119.00 1007.00 396.00 n 226.50 o 115.50 r 4770.50
2003 219.50 k 263.50 358.00 g 357.00 f 523.00 l 765.00 i 809.00 l 766.00 j 704.00 j 614.50 i 211.50 l 134.00 n 263.50
2004 110.50 k 196.50 j 429.00 j 471.00 h 523.50 l 697.50 j 630.50 n 617.50 n 692.50 i 401.00 m 232.00 k 125.50 r 0.00
2005 102.00 l 263.00 h 283.50 n 326.00 m 452.00 m 0.00 z 763.50 m 853.50 i 617.50 j 505.50 j 292.50 l 73.00 s 0.00
2006 186.50 k 198.00 j 200.00 j 363.50 j 601.50 l 683.50 k 636.50 o 581.50 n 589.00 k 369.00 l 225.00 l 127.50 r 0.00
2007 95.50 p 102.00 q 293.50 p 322.00 n 382.00 r 683.50 k 684.50 m 525.00 r 558.00 m 416.00 n 253.00 p 123.50 p 0.00
2008 0.00 z 0.00 z 0.00 z 326.00 l 524.50 n 300.50 u 752.00 k 729.50 l 648.50 j 509.00 j 216.50 o 63.50 s 0.00
2009 97.00 p 184.50 i 209.50 n 345.00 m 404.50 q 659.00 j 631.50 n 462.00 r 646.50 k 405.50 j 186.00 n 53.50 s 0.00
2010 84.50 n 158.50 m 168.50 p 215.50 o 363.50 l 464.00 p 684.50 l 437.00 r 609.00 i 434.50 k 233.50 m 137.00 r 0.00
2011 67.00 p 107.50 p 195.50 o 342.00 k 320.00 o 565.00 k 641.50 m 849.00 h 519.50 p 393.50 m 131.00 s 81.00 p 0.00
2012 75.00 u 210.50 j 231.00 l 224.00 r 579.50 k 580.50 l 568.00 p 807.00 j 516.00 o 504.00 k 171.50 q 90.50 t 0.00
2013 68.50 m 129.00 m 197.00 s 22.50 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 166.66 268.77 411.41 561.03 800.95 990.91 1189.51 1128.33 955.67 706.83 376.21 179.59 7735.99
S.D. 65.25 68.09 82.62 86.12 87.61 74.82 65.57 65.17 67.82 69.51 68.79 62.87 358.21
SKEW 0.15 0.39 0.33 -0.40 0.06 0.09 -0.05 0.12 -0.30 0.18 -0.10 0.47 0.08
MAX 325.00 460.50 628.00 730.00 1013.50 1177.00 1363.50 1309.00 1101.50 866.50 531.50 377.00 8565.00
MIN 10.33 138.00 267.00 281.00 591.50 819.50 1027.00 953.52 785.50 571.00 176.00 59.00 6874.13
NO YRS 92 97 95 93 95 90 91 94 92 84 90 86 76