KENNEWICK, WASHINGTON

Monthly Total Growing Degree Days

(454154)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1894 0.00 z 40.00 0.00 z 0.00 z 739.41 d 812.50 1178.00 a 1174.50 715.50 441.00 255.00 21.00 5376.91
1895 32.50 125.50 202.00 433.50 723.50 862.50 993.15 d 996.00 562.00 388.57 b 0.00 z 0.00 z 5319.22
1896 120.50 234.00 273.00 360.00 603.00 927.50 1187.50 1017.00 715.50 491.50 162.50 59.00 6151.00
1897 5.50 51.00 78.00 425.50 761.00 839.50 994.50 1161.50 696.00 410.00 170.50 54.50 5647.50
1898 2.50 126.00 160.50 443.00 725.00 894.00 1127.00 1214.00 784.50 409.00 132.00 53.50 6071.00
1899 116.00 89.50 170.00 411.00 596.50 839.00 1170.50 891.00 827.00 376.50 282.00 77.00 5846.00
1900 79.00 82.50 338.00 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 z 499.50
1901 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 z 0.00 z 0.00 z 0.00 z 0.00
1902 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 z 0.00 z 0.00 z 0.00 z 0.00
1903 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 z 0.00 z 0.00 z 0.00 z 0.00
1904 17.00 n 39.00 129.50 505.50 653.00 569.00 k 544.50 p 1130.47 a 759.83 a 0.00 z 0.00 z 0.00 z 3217.29
1905 0.00 z 81.50 312.50 460.50 614.00 0.00 z 1183.50 1061.00 799.50 269.50 45.00 b 4.65 a 4831.65
1906 33.58 a 64.62 b 215.97 a 518.79 a 687.88 b 789.31 a 1434.04 d 1120.00 595.50 f 486.70 a 47.50 h 19.50 5370.39
1907 6.50 56.00 161.50 356.50 0.00 z 805.00 1092.50 917.00 649.29 b 543.03 b 142.50 60.50 4790.32
1908 23.50 49.00 225.00 494.50 612.77 a 555.50 l 1213.50 1064.00 755.17 a 436.50 184.50 23.50 5081.94
1909 22.00 88.67 a 238.00 385.50 622.50 884.50 996.00 942.50 0.00 z 392.50 226.50 1.00 4799.67
1910 26.00 14.00 d 180.50 t 546.50 700.00 848.50 1086.50 884.10 e 677.00 594.17 a 137.07 a 37.00 5550.83
1911 31.00 a 10.00 214.00 f 423.50 605.00 932.00 1209.00 1061.50 410.00 m 391.00 91.00 f 36.00 4699.00
1912 23.25 c 93.73 a 159.65 a 440.17 a 737.00 986.50 1082.13 d 977.53 a 712.00 332.00 153.50 24.00 5721.47
1913 0.00 z 29.00 167.40 a 460.18 b 670.50 899.48 a 1085.00 a 1144.23 c 726.67 c 330.27 e 176.00 6.09 c 5694.82
1914 39.00 h 69.46 b 182.50 k 325.50 h 715.58 a 733.45 a 1102.00 1035.00 679.50 458.80 a 160.50 0.00 a 4954.29
1915 5.50 62.42 d 326.00 509.50 590.00 855.00 956.50 1072.50 672.00 538.50 115.86 a 49.00 5752.78
1916 24.44 e 14.00 266.00 479.00 585.00 790.00 966.00 1012.50 741.50 370.00 83.50 14.00 5345.94
1917 67.00 29.50 98.00 358.97 a 614.63 e 781.50 1082.33 b 1043.84 b 757.76 a 453.00 143.00 195.00 5624.53
1918 62.00 60.00 278.00 455.50 589.50 952.00 1060.00 942.92 a 811.50 545.50 143.50 103.00 6003.42
1919 75.00 35.50 246.50 464.50 647.00 764.50 816.50 g 987.35 a 696.50 352.50 99.00 9.30 a 4377.65
1920 65.00 8.50 241.50 341.50 568.00 754.50 1077.50 949.50 679.00 354.50 74.00 37.50 5151.00
1921 43.00 64.30 a 244.00 389.00 682.00 889.00 977.50 1003.50 589.00 412.00 158.50 76.00 5527.80
1922 0.00 20.50 123.00 316.50 581.50 983.00 1125.00 1022.00 785.00 448.50 35.00 52.50 5492.50
1923 83.50 8.50 217.00 438.00 650.50 783.00 1101.50 1051.50 760.50 379.00 127.00 57.50 5657.50
1924 34.00 153.00 186.50 0.00 z 800.50 851.00 1092.00 984.00 724.00 437.50 122.00 88.50 5473.00
1925 60.00 173.00 249.00 494.50 693.50 913.50 1137.50 982.50 697.50 340.00 66.00 65.00 5872.00
1926 19.50 148.00 329.50 507.00 459.00 h 915.00 1131.50 956.19 b 553.00 439.50 147.00 35.00 5181.19
1927 20.00 78.50 172.00 356.00 565.00 849.00 1082.50 1020.93 a 648.00 432.00 200.50 51.00 5475.43
1928 18.00 7.50 276.50 356.50 772.00 843.50 1127.00 988.00 696.00 414.50 109.50 25.50 5634.50
1929 0.00 16.50 269.50 350.00 647.00 817.76 a 1030.00 1100.00 644.50 447.50 38.50 53.00 5414.26
1930 22.50 113.00 295.50 537.00 623.00 775.50 1095.50 1079.50 751.00 320.00 83.50 10.00 5706.00
1931 38.50 66.00 225.00 415.50 754.50 832.50 1124.00 1064.00 751.50 398.00 136.50 1.50 5807.50
1932 19.00 115.00 226.00 460.50 613.00 900.50 967.00 991.50 704.00 447.43 a 201.50 81.50 5726.93
1933 89.50 49.00 194.02 b 399.00 388.00 i 870.50 1114.50 1014.06 e 654.00 517.04 c 130.00 217.00 b 5248.61
1934 102.96 c 100.50 370.00 611.54 d 766.14 c 948.33 c 1100.50 1124.00 710.50 521.00 233.50 63.00 6651.98
1935 65.50 40.50 157.00 347.00 641.00 834.00 1046.50 923.00 765.00 380.50 30.00 3.00 5233.00
1936 52.00 24.50 208.00 499.00 746.50 827.50 1025.00 1007.00 667.00 435.00 3.50 85.00 5580.00
1937 0.00 23.50 226.00 373.50 676.50 802.24 a 1088.00 889.00 746.50 482.00 181.00 59.50 5547.74
1938 36.00 21.00 202.50 406.50 710.42 a 936.50 1207.50 1016.00 923.50 447.95 a 151.50 133.50 6192.87
1939 64.50 42.00 237.67 a 501.50 776.50 831.50 1140.00 1106.50 801.00 449.00 78.50 68.50 6097.17
1940 5.00 71.50 290.50 450.00 770.50 946.50 1119.50 1051.42 a 859.00 516.00 42.00 29.50 6151.42
1941 18.00 23.00 305.50 501.00 683.50 833.50 1215.50 1018.50 649.00 381.50 151.00 91.50 5871.50
1942 0.00 40.00 208.00 495.00 646.50 799.00 1148.00 1129.95 a 810.50 507.50 77.00 23.00 5884.45
1943 8.50 32.00 172.05 a 513.50 602.00 750.50 1124.00 977.00 824.00 439.00 52.00 47.50 5542.05
1944 12.50 31.50 171.00 445.50 705.50 825.50 1115.50 1003.50 807.50 519.00 130.00 21.00 5788.00
1945 67.00 97.00 194.00 367.00 702.00 796.50 1099.00 1030.50 663.00 491.00 176.00 62.00 5745.00
1946 0.00 z 0.00 z 0.00 z 363.50 f 695.00 796.00 1046.50 1032.00 666.50 313.00 68.50 101.00 4718.50
1947 56.00 83.00 280.00 483.50 848.00 822.00 1063.00 957.50 751.50 489.00 117.50 29.50 5980.50
1948 32.00 66.06 b 155.50 333.00 592.00 941.90 a 978.16 c 972.00 664.00 308.50 106.50 15.00 5164.61
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 69.00 216.00 436.50 698.50 907.50 1233.50 1073.50 796.50 451.00 214.00 29.00 6245.50
2007 41.50 76.00 285.00 423.50 728.00 887.50 1239.50 1060.00 788.50 418.00 147.50 61.50 6156.50
2008 11.50 91.00 157.50 310.00 713.50 820.86 a 1152.00 1081.50 764.50 405.50 178.50 27.00 5713.36
2009 60.50 21.50 151.00 395.50 703.50 946.50 1199.00 1154.50 871.50 346.00 139.00 4.00 5992.50
2010 51.50 77.00 255.00 415.50 573.00 814.50 1111.00 1091.50 805.50 494.00 185.00 43.50 5917.00
2011 93.00 53.00 206.00 296.50 567.50 811.00 1005.50 1141.00 872.00 505.00 119.00 38.00 5707.50
2012 32.50 61.50 221.00 458.50 667.00 798.00 1152.00 1133.00 815.50 451.00 190.00 90.00 6070.00
2013 32.50 67.50 242.50 37.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 342.50
Period of Record Statistics
MEAN 44.27 73.32 222.39 426.26 674.19 858.45 1100.45 1042.42 743.90 423.16 136.11 50.81 5806.05
S.D. 38.51 45.59 61.56 67.51 71.86 67.38 80.62 79.36 76.12 66.73 59.54 37.27 300.88
SKEW 1.25 0.95 0.22 -0.08 0.05 0.36 0.60 0.14 0.09 0.19 0.13 1.39 0.22
MAX 211.00 234.00 378.50 611.54 851.50 1049.50 1434.04 1214.00 923.50 603.50 282.00 217.00 6651.98
MIN 0.00 3.00 78.00 279.00 499.62 733.45 902.00 884.10 553.00 269.50 3.50 0.00 5151.00
NO YRS 111 115 112 110 111 108 110 111 111 112 110 112 85