SHASTA DAM, CALIFORNIA

Monthly Total Growing Degree Days

(048135)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 913.50 886.00 664.00 450.50 111.00 0.00 3025.00
1949 5.00 16.50 24.00 436.00 535.00 819.00 991.00 867.48 a 779.50 424.50 193.00 j 21.00 4918.98
1950 0.00 46.00 68.72 a 359.00 645.12 b 733.00 1084.00 1011.00 746.00 368.50 174.50 24.00 5259.84
1951 1.50 24.00 129.00 353.00 484.00 823.50 982.18 a 960.50 818.00 355.50 116.38 a 17.00 5064.56
1952 0.50 22.50 96.00 309.50 527.00 522.00 1038.50 630.00 j 778.50 611.00 153.00 5.00 4063.50
1953 28.00 45.00 119.00 152.00 f 261.50 537.00 999.50 815.50 828.50 439.00 122.50 47.50 4243.00
1954 2.50 134.50 88.00 363.50 584.50 591.50 969.00 766.00 623.50 416.50 117.00 9.50 4666.00
1955 5.00 15.50 109.50 104.50 502.00 679.50 875.00 1038.50 794.50 518.00 138.50 19.00 4799.50
1956 0.50 16.00 128.00 307.50 490.00 726.00 1019.50 900.50 711.50 366.50 219.00 78.00 4963.00
1957 3.50 63.50 91.97 a 274.50 426.00 818.50 959.50 861.50 745.50 275.50 89.50 15.50 4624.97
1958 13.00 32.50 19.00 264.50 593.50 665.50 966.68 a 1092.50 781.00 611.00 212.00 134.50 5385.68
1959 22.50 36.00 219.00 439.00 444.50 838.50 1110.00 965.00 652.50 506.00 238.00 62.00 5533.00
1960 0.50 5.00 173.00 225.50 381.00 911.50 1077.50 975.00 809.48 a 463.00 104.50 23.50 5149.48
1961 21.00 45.50 56.50 336.50 333.00 835.00 1028.00 973.00 674.50 433.00 109.00 10.00 4855.00
1962 71.00 32.50 62.00 397.50 381.00 780.50 1012.00 837.00 735.00 405.50 179.00 93.50 4986.50
1963 31.50 113.00 49.50 70.00 476.00 667.50 845.00 892.00 760.50 398.00 66.00 4.50 4373.50
1964 0.00 80.00 97.00 257.00 414.50 624.50 973.50 946.50 650.00 562.50 54.00 37.00 4696.50
1965 34.50 45.50 150.50 218.50 485.00 670.50 930.00 863.50 611.00 572.00 100.00 3.00 4684.00
1966 5.50 3.00 141.00 418.00 618.50 736.50 878.00 1028.50 724.00 517.00 160.50 2.50 5233.00
1967 21.50 55.50 48.00 9.50 519.50 667.50 1042.50 1105.00 829.00 451.50 234.00 46.50 5030.00
1968 49.00 97.00 148.00 296.50 465.00 779.00 1012.50 748.00 748.00 408.00 91.00 0.00 4842.00
1969 1.00 0.00 112.50 203.00 591.00 685.50 1024.50 1011.50 774.00 311.50 243.00 34.00 4991.50
1970 18.50 84.50 142.50 160.00 542.50 753.00 1027.50 958.00 700.50 405.50 110.50 0.00 4903.00
1971 22.50 59.50 44.00 172.00 374.00 623.50 1010.00 1012.50 676.50 345.50 75.00 0.00 4415.00
1972 12.00 32.00 203.00 179.00 527.50 761.50 998.00 960.50 628.00 368.00 50.00 3.50 4723.00
1973 0.50 23.50 34.50 317.50 658.00 801.00 1040.50 905.00 660.00 0.00 z 42.00 4.00 4486.50
1974 7.00 9.00 85.50 186.00 531.50 817.50 898.00 960.00 872.00 512.00 94.50 9.50 4982.50
1975 61.00 15.00 l 30.00 88.50 525.00 729.00 917.50 857.50 883.00 323.50 90.50 62.00 4567.50
1976 67.50 37.50 121.50 160.50 625.00 678.50 1025.50 716.50 711.00 529.50 255.50 60.00 4988.50
1977 18.50 121.00 60.00 366.00 251.50 885.00 973.50 971.50 619.50 416.50 81.21 a 13.00 4777.21
1978 13.00 51.00 206.50 171.50 495.00 724.00 977.50 937.00 580.00 631.00 121.00 8.00 4915.50
1979 3.50 9.00 164.50 201.00 563.00 787.00 944.00 849.50 808.00 449.00 104.50 35.00 4918.00
1980 67.68 a 32.00 88.00 250.50 446.50 520.50 910.50 899.00 708.50 526.50 153.00 59.50 4662.18
1981 28.00 50.50 93.00 312.50 512.00 812.50 1010.50 990.00 783.00 324.50 148.00 16.50 5081.00
1982 0.50 37.50 55.50 179.50 590.00 657.00 876.00 904.00 609.50 384.50 50.50 3.00 4347.50
1983 10.00 5.19 a 26.00 124.50 541.50 690.00 783.50 902.00 730.50 477.00 61.00 2.50 4353.69
1984 98.00 79.50 185.50 195.00 544.50 722.00 1079.50 951.50 767.00 294.00 23.00 7.50 4947.00
1985 20.00 138.50 140.00 479.00 573.00 885.50 1093.50 872.00 560.50 438.50 0.00 z 44.00 5244.50
1986 26.50 60.00 m 257.00 271.55 a 506.50 850.50 944.00 0.00 z 562.00 523.00 263.00 40.00 4244.05
1987 1.00 42.50 77.00 421.50 623.50 823.00 840.50 1007.00 800.00 663.50 111.50 13.00 5424.00
1988 34.50 162.00 209.00 0.00 z 385.50 337.00 r 1090.50 996.50 845.50 678.50 83.50 75.00 4560.50
1989 35.00 19.00 73.50 390.00 474.50 744.50 964.00 863.00 681.00 390.00 219.50 63.00 4917.00
1990 11.50 60.50 196.00 408.00 435.00 680.00 1006.50 916.00 782.00 517.50 129.50 10.00 5152.50
1991 33.00 164.50 50.00 174.50 362.50 659.00 1050.50 868.50 923.50 671.00 196.00 22.50 5175.50
1992 9.50 111.00 157.50 331.00 766.50 757.50 909.50 1002.00 774.50 538.00 138.50 5.50 5501.00
1993 10.50 12.50 185.50 183.50 446.00 641.50 886.50 892.50 769.00 503.00 169.50 10.00 4710.00
1994 71.00 4.00 229.50 303.50 513.50 708.00 1078.00 964.50 801.00 438.00 13.50 0.00 5124.50
1995 15.00 154.00 67.00 178.50 427.50 594.50 874.00 931.50 803.50 534.50 254.50 27.50 4862.00
1996 32.00 113.50 174.50 244.00 460.00 769.00 1062.50 1042.00 719.00 434.00 155.00 29.00 5234.50
1997 38.00 81.50 223.50 265.50 636.50 698.00 949.50 898.50 705.00 397.00 126.50 31.50 5051.00
1998 4.00 0.00 106.50 195.00 172.00 601.00 993.50 1007.00 801.50 420.50 39.00 32.00 4372.00
1999 26.50 0.00 40.00 264.00 496.00 693.50 897.50 871.50 840.00 543.50 155.50 71.00 4899.00
2000 1.00 22.50 170.50 329.50 487.50 852.00 911.00 991.00 659.50 403.50 73.50 46.00 4947.50
2001 36.00 18.00 243.00 201.00 720.50 750.00 b 946.50 972.50 800.50 579.00 146.90 a 2.50 5416.40
2002 6.50 83.50 109.50 321.50 493.50 811.50 1062.50 966.00 811.50 512.00 175.00 8.50 5361.50
2003 43.50 38.50 129.50 92.00 414.00 g 847.00 1086.50 906.50 873.00 633.00 29.50 7.00 4686.00
2004 4.00 10.00 333.50 338.00 0.00 z 816.50 1030.50 969.50 754.50 0.00 z 0.00 z 40.50 4297.00
2005 14.50 75.00 173.00 196.00 423.50 558.50 1088.50 0.00 z 690.00 0.00 z 161.00 32.50 3412.50
2006 8.00 107.00 2.00 198.50 603.00 826.50 713.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1745.00
Period of Record Statistics
MEAN 21.16 53.19 120.99 258.80 498.06 730.55 982.24 931.95 740.22 466.72 129.70 27.28 4941.32
S.D. 22.14 45.09 70.36 104.68 109.87 95.82 75.59 78.68 83.80 99.51 64.35 27.71 305.02
SKEW 1.41 0.90 0.56 0.00 -0.38 -0.32 -0.37 -0.38 -0.25 0.30 0.34 1.47 -0.14
MAX 98.00 164.50 333.50 479.00 766.50 911.50 1110.00 1105.00 923.50 678.50 263.00 134.50 5533.00
MIN 0.00 0.00 2.00 9.50 172.00 520.50 783.50 716.50 560.50 275.50 13.50 0.00 4347.50
NO YRS 58 56 58 56 56 57 58 55 58 55 55 58 46