KENNEWICK, WASHINGTON

Monthly Total Growing Degree Days

(454154)

Base Temperature = 40 F

File last updated on Jul 25, 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 941.90 a 978.16 c 972.00 664.00 308.50 110.00 20.00 3994.56
1949 0.00 38.00 199.00 517.24 a 777.50 845.50 1020.00 987.00 744.31 a 286.00 188.50 52.50 5655.55
1950 6.50 55.50 168.00 335.50 589.00 e 809.46 b 1077.50 1014.50 726.21 a 356.50 114.50 70.00 m 5253.17
1951 56.00 61.50 113.00 397.00 689.50 853.00 1113.50 1010.50 760.50 403.50 105.00 36.00 5599.00
1952 5.50 69.00 195.00 495.00 729.00 830.50 1078.50 1016.00 760.86 a 505.00 35.50 33.50 5753.36
1953 211.00 113.00 257.50 384.00 600.50 738.00 1066.50 666.00 k 789.31 a 457.00 186.00 104.00 4906.81
1954 55.28 a 126.00 125.07 b 353.00 680.50 767.59 a 561.50 m 904.00 692.50 314.50 222.50 39.00 4279.94
1955 6.00 34.00 112.00 282.00 554.90 a 899.50 778.00 f 570.50 l 691.03 a 448.95 c 89.46 b 27.50 3145.35
1956 26.00 20.50 k 204.50 483.50 755.50 786.50 590.00 n 993.50 704.48 a 367.50 65.50 101.00 4487.98
1957 2.50 83.00 184.00 440.50 764.50 900.50 1004.50 899.00 d 753.50 314.00 69.50 104.50 5520.00
1958 71.50 152.00 159.00 379.00 851.50 986.50 1212.50 790.00 j 728.50 409.00 234.83 a 46.50 5230.83
1959 52.18 a 60.50 229.00 443.00 575.00 865.50 1089.50 926.50 663.50 409.50 121.50 37.50 5473.18
1960 2.77 c 60.50 255.00 442.00 622.50 868.00 1213.50 970.00 721.00 456.00 173.50 10.50 5795.27
1961 80.00 221.50 283.00 461.50 697.50 1049.50 1194.50 1202.00 693.00 389.50 47.88 d 75.50 6395.38
1962 59.50 72.00 164.50 518.50 581.00 834.50 1050.00 984.00 773.50 405.50 224.00 62.00 5729.00
1963 26.50 81.00 236.00 374.50 696.00 886.00 1004.50 1052.00 862.00 545.00 224.50 9.50 5997.50
1964 64.50 80.00 215.93 b 400.00 663.00 821.50 1043.50 925.50 686.00 395.50 80.00 56.50 5431.93
1965 55.50 106.00 165.50 484.50 651.00 870.50 1107.00 1048.50 670.00 534.00 195.00 36.00 5923.50
1966 47.50 78.50 239.50 468.00 749.50 827.50 1015.50 1039.50 827.00 433.00 166.00 95.50 5987.00
1967 138.00 165.50 229.00 304.00 677.50 952.50 1128.50 1173.00 890.00 522.50 138.50 82.50 6401.50
1968 82.50 182.50 295.50 382.00 708.00 899.50 1139.00 969.55 b 782.50 357.00 105.00 37.00 5940.05
1969 2.00 3.00 203.50 407.50 747.00 980.00 1023.00 951.00 758.50 318.00 113.00 25.00 5531.50
1970 13.00 57.50 183.00 292.00 655.00 932.50 1143.50 1031.50 604.50 329.50 106.50 33.00 5381.50
1971 140.50 100.50 147.50 371.00 717.50 761.50 1104.00 1170.50 622.50 421.00 135.00 46.00 5737.50
1972 78.00 114.50 294.50 349.00 750.00 910.00 1081.50 1091.50 676.50 375.50 91.00 103.50 5915.50
1973 23.50 61.00 281.50 442.50 735.50 884.50 1123.00 1023.00 742.50 424.50 104.50 67.00 5913.00
1974 120.00 105.50 229.50 424.50 560.00 951.43 b 1032.50 1050.50 773.00 341.50 151.00 64.58 a 5804.01
1975 26.50 30.00 138.50 283.50 625.50 795.00 1173.00 956.72 b 744.00 441.00 165.50 54.00 5433.22
1976 42.00 92.50 186.50 364.00 0.00 z 757.00 1026.62 a 938.55 b 570.00 j 372.00 124.29 b 32.50 3935.95
1977 3.50 105.50 184.50 479.00 499.62 a 728.00 g 1008.50 1200.50 646.00 395.50 135.50 94.00 4752.12
1978 4.00 45.50 278.50 391.00 589.00 873.00 1047.50 0.00 z 672.00 365.50 40.50 7.00 4313.50
1979 0.00 75.00 240.50 0.00 z 704.00 0.00 z 1101.50 1040.50 825.00 0.00 z 57.00 74.50 4118.00
1980 4.00 25.50 193.00 493.00 670.50 762.50 1100.50 967.00 776.00 423.50 149.50 92.00 5657.00
1981 27.50 105.50 258.50 428.00 613.50 759.50 1012.00 1114.00 743.00 364.77 a 127.00 51.00 5604.27
1982 36.00 115.00 162.50 279.00 587.50 880.00 1032.50 1084.00 761.00 375.50 94.00 48.50 5455.50
1983 90.00 149.50 339.00 402.50 744.00 828.50 1007.50 1105.50 674.50 397.50 220.50 6.50 5965.50
1984 59.00 73.50 281.50 389.50 558.00 798.00 1116.00 1071.50 681.50 311.50 93.00 11.00 5444.00
1985 0.00 27.50 168.00 495.50 713.50 854.50 1213.00 960.00 610.00 358.00 85.00 0.00 5485.00
1986 13.50 83.50 300.00 388.50 655.50 982.50 959.50 1185.50 697.00 467.50 191.50 7.50 5932.00
1987 18.00 69.00 287.00 547.50 783.50 912.50 1049.50 1015.50 845.00 431.50 211.00 74.00 6244.00
1988 17.50 111.50 225.50 456.00 672.00 836.50 1089.00 1035.50 741.50 603.50 206.00 28.50 6023.00
1989 88.50 6.00 211.50 488.50 636.50 939.00 1046.00 1007.00 777.00 439.00 221.50 32.00 5892.50
1990 108.00 79.00 220.00 538.00 631.00 863.00 1181.00 1090.00 909.00 394.50 240.00 33.50 6287.00
1991 30.00 131.50 140.50 427.50 594.00 734.00 1099.00 1144.00 821.00 439.50 114.00 90.00 5765.00
1992 68.00 107.50 310.00 484.50 760.00 1013.00 1047.00 1082.00 696.50 467.50 136.50 26.00 6198.50
1993 8.50 6.50 145.50 402.50 810.00 819.50 902.00 993.00 755.50 488.00 64.00 60.50 5455.50
1994 71.00 67.00 280.00 522.00 740.50 857.00 1175.00 1085.00 854.00 441.00 96.00 89.50 6278.00
1995 17.00 175.50 197.50 373.00 704.50 816.50 1094.00 946.00 867.00 399.50 219.50 60.00 5870.00
1996 44.50 75.00 190.50 448.50 570.50 826.00 1134.50 1046.50 713.00 428.50 97.00 26.00 5600.50
1997 46.00 92.00 247.50 367.50 749.50 852.00 1073.50 1172.00 824.00 441.50 155.00 36.00 6056.50
1998 71.50 88.50 268.00 401.00 689.50 0.00 z 1305.00 1156.50 920.50 428.00 244.50 86.00 5659.00
1999 123.00 124.50 219.50 368.00 590.00 852.00 1034.00 1145.50 745.50 408.00 242.50 115.00 5967.50
2000 35.00 49.00 200.00 494.00 705.00 885.00 1087.00 1081.50 719.00 407.50 49.50 0.00 5712.50
2001 6.00 33.00 241.00 378.00 724.50 0.00 z 1111.50 1149.50 873.00 445.50 0.00 z 61.50 5023.50
2002 63.00 67.00 162.00 430.00 629.00 927.50 1189.00 1042.00 790.00 376.00 180.00 82.00 5937.50
2003 81.50 86.00 352.50 446.00 677.50 956.50 1213.50 1145.00 855.00 0.00 z 106.00 11.00 5930.50
2004 34.50 36.50 378.50 484.00 703.00 916.50 1203.00 1157.50 789.00 505.50 103.00 66.00 6377.00
2005 18.00 37.00 324.00 451.00 769.50 851.50 1160.00 1127.50 752.50 509.50 101.00 24.00 6125.50
2006 120.50 69.00 230.50 431.50 703.70 a 907.50 809.50 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2462.70
Period of Record Statistics
MEAN 48.31 82.83 222.97 420.42 676.89 867.45 1091.56 1049.08 751.57 413.47 138.04 50.63 5833.01
S.D. 44.03 44.81 60.98 66.40 74.62 71.34 76.95 82.83 74.89 64.90 59.42 31.23 290.55
SKEW 1.24 0.69 0.34 -0.25 -0.14 0.25 0.28 0.15 0.27 0.44 0.26 0.27 0.29
MAX 211.00 221.50 378.50 547.50 851.50 1049.50 1305.00 1202.00 920.50 603.50 244.50 115.00 6401.50
MIN 0.00 3.00 112.00 279.00 499.62 734.00 902.00 899.00 604.50 286.00 35.50 0.00 5381.50
NO YRS 58 57 58 57 57 55 55 54 57 56 57 57 44