KENNEWICK, WASHINGTON

Monthly Total Growing Degree Days

(454154)

Base Temperature = 50 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 0.50 0.00 z 0.00 z 429.41 d 512.50 868.00 a 864.50 415.50 144.00 30.50 0.00 3264.91
1895 0.50 4.00 35.00 155.50 413.50 562.50 683.15 d 686.00 265.00 151.26 b 0.00 z 0.00 z 2956.41
1896 13.00 29.00 64.50 86.50 299.50 627.50 877.50 707.00 415.50 184.00 36.50 3.50 3344.00
1897 0.00 0.00 11.50 141.50 451.00 539.50 684.50 851.50 396.00 155.50 48.50 3.00 3282.50
1898 0.00 21.50 13.00 158.00 415.00 594.00 817.00 904.00 484.50 117.50 11.50 12.00 3548.00
1899 11.50 7.50 9.50 125.50 287.00 539.00 860.50 581.00 527.00 110.00 26.50 7.00 3092.00
1900 1.00 0.00 64.50 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 65.50
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 0.00 n 0.00 14.50 221.00 345.00 379.00 k 394.50 p 820.47 a 459.83 a 0.00 z 0.00 z 0.00 z 1860.79
1905 0.00 z 10.50 49.50 173.50 307.00 0.00 z 873.50 751.00 499.50 79.00 2.14 b 0.00 a 2745.64
1906 0.52 a 8.62 b 46.50 a 227.59 a 377.88 b 489.31 a 1124.04 d 810.00 356.00 f 217.52 a 8.00 h 0.00 3301.96
1907 0.00 2.00 6.50 91.00 0.00 z 505.00 782.50 607.00 349.82 b 233.03 b 9.50 1.00 2587.36
1908 0.00 0.00 41.50 213.00 302.77 a 375.50 l 903.50 754.00 459.83 a 163.00 34.50 0.00 2872.09
1909 0.00 0.00 a 29.00 100.00 312.50 584.50 686.00 632.50 0.00 z 110.50 52.50 0.00 2507.50
1910 0.00 0.00 d 74.50 t 252.00 390.00 548.50 776.50 574.10 e 377.00 305.87 a 22.76 a 0.00 3246.72
1911 0.00 a 0.00 44.50 f 154.00 295.00 632.00 899.00 751.50 240.00 m 154.00 7.50 f 2.00 2887.50
1912 2.21 c 5.70 a 18.08 a 142.24 a 427.00 686.50 772.13 d 667.53 a 412.00 103.50 12.00 0.00 3248.90
1913 0.00 z 7.00 10.33 a 173.57 b 360.50 599.48 a 775.00 a 834.23 c 426.67 c 86.44 e 9.50 0.00 c 3282.73
1914 0.00 h 2.69 b 20.50 k 110.50 h 405.58 a 433.45 a 792.00 725.00 379.50 150.87 a 39.50 0.00 a 2928.59
1915 0.00 0.00 d 71.50 217.00 284.50 555.00 646.50 762.50 372.00 229.00 10.86 a 0.00 3148.86
1916 3.58 e 0.00 49.50 180.00 275.50 490.00 656.00 702.50 441.50 91.00 6.00 0.00 2895.58
1917 2.50 0.00 3.00 88.45 a 307.62 e 481.50 772.33 b 733.84 b 457.76 a 195.00 6.50 45.50 3093.99
1918 6.00 1.00 74.00 182.00 281.00 652.00 750.00 632.92 a 511.50 243.50 16.00 22.50 3372.42
1919 16.50 0.00 38.50 176.00 337.00 464.50 576.50 g 677.35 a 398.00 123.00 9.00 0.00 a 2239.85
1920 7.50 0.00 17.00 96.00 258.00 454.50 767.50 639.50 379.00 106.50 5.00 0.50 2731.00
1921 1.50 5.19 a 29.00 119.00 373.50 589.00 667.50 693.50 294.50 118.00 25.00 19.00 2934.69
1922 0.00 0.00 4.00 64.00 277.00 683.00 815.00 712.00 485.00 165.00 1.00 2.50 3208.50
1923 3.00 0.00 38.00 145.00 340.50 483.00 791.50 741.50 460.50 131.00 15.00 1.00 3150.00
1924 4.50 15.00 6.50 0.00 z 490.50 551.00 782.00 674.00 424.00 148.00 4.00 33.00 3132.50
1925 0.50 14.50 17.00 198.00 383.50 613.50 827.50 672.50 400.00 57.50 4.00 6.00 3194.50
1926 0.00 1.00 80.50 226.00 229.50 h 615.00 821.50 646.19 b 280.00 153.00 14.00 1.00 2838.19
1927 0.00 1.50 10.00 116.50 255.00 549.00 772.50 710.93 a 348.00 141.50 38.00 7.50 2950.43
1928 0.00 0.00 59.00 113.00 462.50 543.50 817.00 678.00 396.00 155.00 5.00 1.00 3230.00
1929 0.00 0.00 52.00 107.00 337.00 517.76 a 720.00 790.00 347.00 173.00 1.00 0.00 3044.76
1930 0.00 24.50 79.50 237.00 315.00 475.50 785.50 769.50 451.00 101.50 17.00 0.00 3256.00
1931 0.50 8.50 31.00 143.00 444.50 532.50 814.00 754.00 451.50 99.50 21.00 0.00 3300.00
1932 1.50 32.00 35.50 164.00 303.00 600.50 657.00 681.50 404.00 169.98 a 34.50 9.50 3092.98
1933 15.00 0.00 18.17 b 144.00 168.00 i 570.50 804.50 704.06 e 356.50 221.43 c 30.50 53.45 b 2918.11
1934 6.09 c 10.00 106.50 313.85 d 456.14 c 648.33 c 790.50 814.00 420.50 217.00 29.50 2.00 3814.41
1935 8.50 0.00 21.50 102.50 331.00 534.00 736.50 613.00 465.00 156.50 0.50 0.00 2969.00
1936 0.00 1.00 17.50 240.50 436.50 527.50 715.00 697.00 367.00 162.50 0.00 8.00 3172.50
1937 0.00 0.00 16.00 86.00 366.50 502.24 a 778.00 579.00 446.50 177.00 13.00 6.50 2970.74
1938 0.00 0.00 27.00 123.00 400.42 a 636.50 897.50 706.00 623.50 160.68 a 29.50 20.50 3624.60
1939 2.50 0.00 60.97 a 215.00 466.50 531.50 830.00 796.50 501.00 169.50 4.50 0.00 3577.97
1940 0.00 0.00 57.50 162.00 460.50 646.50 809.50 741.42 a 559.00 212.50 0.00 0.00 3648.92
1941 0.00 0.00 60.50 205.50 373.50 533.50 905.50 708.50 349.00 113.00 27.00 9.00 3285.00
1942 0.00 0.00 28.50 196.00 337.00 499.00 838.00 819.95 a 510.50 213.00 4.50 0.00 3446.45
1943 0.00 0.00 40.82 a 219.00 292.00 450.50 814.00 667.00 524.00 192.00 6.00 5.50 3210.82
1944 0.00 3.00 38.00 159.00 395.50 525.50 805.50 693.50 507.50 209.00 14.50 0.00 3351.00
1945 8.50 13.50 18.50 112.00 392.00 496.50 789.00 720.50 363.00 222.00 34.00 2.00 3171.50
1946 0.00 z 0.00 z 0.00 z 131.00 f 385.00 496.00 736.50 722.00 369.50 73.00 10.50 17.00 2809.50
1947 5.00 5.50 59.00 197.50 538.00 522.00 753.00 647.50 451.50 199.00 9.00 0.00 3387.00
1948 0.00 4.30 b 17.50 84.00 284.50 641.90 a 668.16 c 662.00 365.00 79.50 1.00 0.00 2807.85
1949 0.00 0.00 10.50 218.28 a 467.50 545.50 710.00 677.00 444.31 a 64.00 27.50 0.00 3164.59
1950 0.00 3.00 12.50 64.50 279.00 e 509.46 b 767.50 704.50 427.76 a 91.00 1.00 8.50 m 2860.22
1951 3.00 12.50 4.00 121.50 379.50 553.00 803.50 700.50 460.50 154.50 5.00 1.00 3198.50
1952 0.00 0.50 34.50 213.00 419.00 530.50 768.50 706.00 460.86 a 209.50 0.00 0.00 3342.36
1953 26.00 6.00 33.50 129.50 290.50 438.00 756.50 466.00 k 489.31 a 152.50 25.00 2.00 2348.81
1954 0.00 a 11.00 8.02 b 86.50 376.50 467.59 a 381.50 m 594.00 396.50 83.50 23.00 0.00 2046.60
1955 0.00 1.00 3.00 44.50 251.62 a 599.50 528.00 f 380.50 l 391.03 a 151.68 c 24.11 b 0.00 1466.44
1956 1.00 1.50 k 24.00 204.50 445.50 486.50 420.00 n 683.50 404.48 a 103.50 1.00 5.00 2358.98
1957 0.00 13.00 12.50 140.50 454.50 600.50 694.50 589.00 d 454.50 63.50 2.50 4.50 3029.50
1958 2.00 13.00 7.00 94.00 541.50 686.50 902.50 580.00 j 428.50 157.50 55.34 a 6.50 2894.34
1959 0.00 a 7.50 20.50 152.00 265.00 565.50 779.50 616.50 363.50 124.50 33.50 7.50 2935.50
1960 0.00 c 0.00 65.00 156.00 312.50 568.00 903.50 660.00 421.00 168.00 26.50 0.00 3280.50
1961 14.00 26.00 44.00 175.50 387.50 749.50 884.50 892.00 393.00 144.50 0.58 d 0.00 3711.08
1962 2.00 0.00 12.00 219.50 272.50 534.50 740.00 674.00 473.50 111.50 43.50 0.00 3083.00
1963 0.00 4.50 26.50 106.50 386.00 586.00 694.50 742.00 562.00 263.50 23.50 0.00 3395.00
1964 0.00 1.00 29.93 b 136.50 353.00 521.50 733.50 615.50 386.00 128.00 4.00 3.50 2912.43
1965 2.50 7.50 19.50 194.00 343.50 570.50 797.00 738.50 373.50 230.00 28.00 0.00 3304.50
1966 1.00 1.50 53.50 183.50 439.50 527.50 705.50 729.50 527.00 138.50 3.50 0.50 3311.00
1967 12.50 23.50 33.00 48.00 368.00 652.50 818.50 863.00 590.00 223.50 16.50 1.00 3650.00
1968 14.50 40.00 51.00 118.50 398.00 599.50 829.00 659.55 b 482.50 91.50 3.00 3.50 3290.55
1969 0.00 0.00 38.50 117.00 437.00 680.00 713.00 641.00 458.50 60.50 6.50 0.00 3152.00
1970 0.00 0.00 18.50 50.50 345.00 632.50 833.50 721.50 305.50 96.50 5.00 2.50 3011.00
1971 26.50 8.00 13.50 103.50 407.50 461.50 794.00 860.50 322.50 174.50 6.00 0.50 3178.50
1972 7.00 21.00 74.50 93.50 440.00 610.00 771.50 781.50 381.50 109.00 0.00 7.50 3297.00
1973 0.00 6.00 27.00 158.00 425.50 584.50 813.00 713.00 442.50 134.50 8.00 2.00 3314.00
1974 6.00 0.00 25.50 131.50 250.00 651.43 b 722.50 740.50 473.00 64.00 19.00 0.52 a 3083.95
1975 0.00 0.00 9.50 52.50 315.50 495.00 863.00 646.72 b 444.00 152.00 37.50 10.00 3025.72
1976 0.00 1.00 18.00 98.50 0.00 z 457.00 716.62 a 628.55 b 370.00 j 124.00 20.36 b 2.50 2066.53
1977 0.00 9.50 13.00 201.00 193.75 a 498.00 g 698.50 890.50 346.00 110.00 12.00 11.50 2485.75
1978 0.00 0.00 79.00 100.00 279.00 573.00 737.50 0.00 z 372.50 119.00 6.50 0.00 2266.50
1979 0.00 0.50 28.50 0.00 z 394.00 0.00 z 791.50 730.50 525.00 0.00 z 0.00 2.00 2472.00
1980 0.00 0.00 4.00 212.50 360.50 462.50 790.50 657.00 476.00 159.50 26.50 19.50 3168.50
1981 0.00 10.00 34.00 155.50 305.50 459.50 702.00 804.00 443.00 83.70 a 6.50 4.50 3008.20
1982 0.00 23.00 10.50 65.50 281.50 580.00 722.50 774.00 461.00 113.00 4.50 2.00 3037.50
1983 3.00 12.50 65.00 130.00 434.00 528.50 697.50 795.50 376.50 100.00 40.00 0.00 3182.50
1984 5.50 0.50 34.00 93.00 248.50 498.00 806.00 761.50 382.00 111.50 1.50 0.00 2942.00
1985 0.00 0.00 15.50 206.50 405.00 554.50 903.00 650.00 312.00 99.00 15.00 0.00 3160.50
1986 0.00 20.00 53.00 102.50 352.50 682.50 649.50 875.50 397.00 158.50 26.50 0.00 3317.50
1987 0.00 0.00 51.50 252.00 473.50 612.50 739.50 705.50 545.00 148.50 35.00 9.00 3572.00
1988 0.00 0.00 25.00 165.50 363.00 536.50 779.00 725.50 441.50 315.00 44.50 0.00 3395.50
1989 9.50 0.00 24.50 196.00 326.50 639.00 736.00 697.00 477.00 159.50 56.00 1.00 3322.00
1990 11.00 6.00 38.00 240.00 323.00 563.00 871.00 780.00 609.00 115.00 55.50 0.50 3612.00
1991 1.50 3.50 7.50 134.00 284.00 434.00 789.00 834.00 521.00 178.50 10.00 1.50 3198.50
1992 4.50 0.00 48.00 202.50 450.00 713.00 737.00 772.00 396.50 182.50 9.00 0.00 3515.00
1993 0.00 0.00 6.00 111.50 500.00 519.50 592.00 683.00 455.50 200.50 6.00 6.50 3080.50
1994 1.00 0.50 69.00 222.00 430.50 557.00 865.00 775.00 554.00 143.50 3.00 13.00 3633.50
1995 1.50 39.50 27.00 89.00 394.50 516.50 784.00 636.00 567.00 137.00 36.50 6.00 3234.50
1996 4.00 7.50 13.00 159.00 260.50 526.00 824.50 736.50 413.00 186.00 2.00 0.00 3132.00
1997 0.00 4.00 37.50 115.50 439.50 552.00 763.50 862.00 524.00 151.50 7.50 3.00 3460.00
1998 0.00 0.00 51.50 122.00 379.50 0.00 z 995.00 846.50 620.50 146.50 41.50 2.50 3205.50
1999 7.00 11.00 26.50 106.00 284.00 552.00 724.00 835.50 445.50 128.00 46.50 8.00 3174.00
2000 0.00 0.00 2.00 201.50 395.00 585.00 777.00 771.50 420.50 128.00 2.50 0.00 3283.00
2001 0.00 0.00 28.50 126.50 414.50 0.00 z 801.50 839.50 573.00 146.00 0.00 z 0.50 2930.00
2002 5.00 9.00 22.00 141.50 325.00 627.50 879.00 732.00 490.00 131.00 32.00 10.50 3404.50
2003 6.50 4.50 95.50 160.50 369.00 656.50 903.50 835.00 555.00 0.00 z 15.00 0.00 3601.00
2004 3.50 0.00 107.00 188.50 393.00 616.50 893.00 847.50 489.00 205.50 10.00 8.50 3762.00
2005 0.00 0.00 63.00 156.50 459.50 551.50 850.00 817.50 452.50 203.50 6.50 0.00 3560.50
2006 7.00 0.50 32.50 143.00 388.50 607.50 923.50 763.50 496.50 155.50 59.00 0.00 3577.00
2007 2.00 5.00 72.50 145.00 418.00 587.50 929.50 750.00 488.50 148.50 28.00 17.00 3591.50
2008 0.00 1.50 2.00 75.00 404.50 520.86 a 842.00 771.50 464.50 142.50 36.00 0.00 3260.36
2009 7.50 0.50 8.00 125.50 393.50 646.50 889.00 844.50 571.50 102.50 17.50 0.00 3606.50
2010 0.00 1.00 23.50 146.00 268.00 514.50 801.00 781.50 505.50 192.50 36.50 0.50 3270.50
2011 18.50 0.50 22.50 43.00 257.50 511.00 695.50 831.00 572.00 218.00 16.50 2.00 3188.00
2012 3.50 7.00 24.00 182.00 357.00 498.00 842.00 823.00 515.50 176.50 52.50 10.50 3491.50
2013 0.50 0.00 58.50 17.00 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 59.00
Period of Record Statistics
MEAN 3.08 5.43 33.48 148.86 365.01 558.45 790.45 732.42 444.68 150.09 18.51 4.48 3263.17
S.D. 5.26 8.48 23.93 54.27 71.16 67.38 80.62 79.36 75.06 50.53 15.93 8.42 230.10
SKEW 2.36 2.11 0.91 0.22 0.06 0.37 0.60 0.14 0.14 0.58 0.74 3.45 0.25
MAX 26.50 40.00 107.00 313.85 541.50 749.50 1124.04 904.00 623.50 315.00 59.00 53.45 3814.41
MIN 0.00 0.00 2.00 43.00 193.75 433.45 592.00 574.10 265.00 57.50 0.00 0.00 2731.00
NO YRS 111 115 112 110 111 108 110 111 111 112 110 112 85