DAVENPORT, WASHINGTON

Monthly Total Growing Degree Days

(452007)

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
1893 0.00 z 0.00 z 10.16 b 115.56 c 404.50 524.50 812.50 842.00 509.50 156.50 50.00 1.55 a 3426.76
1894 0.00 0.00 45.50 170.00 495.50 514.50 811.00 888.50 438.50 171.50 0.00 z 0.00 z 3535.00
1895 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
1896 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
1897 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
1898 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
1899 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
1900 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
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 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
1905 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
1906 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
1907 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
1908 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
1909 0.00 z 0.00 z 48.50 v 100.00 349.00 589.00 706.00 752.00 608.50 201.50 54.00 0.00 3360.00
1910 0.00 0.00 151.00 316.00 543.50 579.50 873.00 695.50 498.50 271.00 31.00 0.00 3959.00
1911 0.00 0.00 110.00 178.93 b 324.50 620.19 d 707.00 f 572.00 h 421.50 131.50 j 11.00 0.00 a 1666.12
1912 0.00 a 1.55 a 46.50 a 126.50 i 429.98 d 635.36 b 769.32 a 684.38 e 334.00 f 64.50 k 24.31 a 0.00 c 2591.40
1913 0.00 c 0.00 a 8.86 c 207.12 d 396.50 628.50 758.00 808.50 472.50 110.00 11.50 0.00 3401.47
1914 0.00 1.00 55.11 d 162.00 416.84 c 457.50 847.69 b 820.00 416.50 237.67 a 39.00 g 0.00 3414.31
1915 0.00 a 0.00 b 121.00 320.00 392.67 a 519.00 728.00 968.50 443.50 251.00 6.00 0.00 a 3749.67
1916 0.00 0.00 45.95 c 135.00 161.95 b 510.52 a 626.00 0.00 z 0.00 z 135.50 12.50 0.00 1627.41
1917 0.00 0.00 0.00 60.50 343.50 436.00 831.00 830.50 553.00 289.00 62.50 17.50 3423.50
1918 16.00 2.00 60.50 273.00 368.50 759.00 900.00 739.50 697.50 314.50 15.50 5.50 4151.50
1919 72.00 7.00 104.00 205.86 a 445.88 a 555.00 b 855.17 b 831.00 541.00 170.00 15.50 0.00 3802.42
1920 0.50 0.00 34.00 115.50 310.00 487.50 903.00 848.00 473.50 183.50 23.00 0.00 3378.50
1921 10.50 f 0.00 f 40.19 d 115.96 d 316.50 f 577.50 b 774.50 863.50 377.00 304.00 31.00 12.50 3096.15
1922 0.00 0.00 1.50 124.00 380.00 788.50 953.00 834.50 617.00 312.00 5.50 0.00 a 4016.00
1923 4.50 0.00 74.50 269.00 413.50 560.17 a 870.00 847.50 600.00 275.00 14.00 4.00 3932.17
1924 0.50 15.50 22.50 184.50 623.00 663.00 895.50 817.37 a 596.00 223.00 7.00 14.00 4061.87
1925 0.50 3.00 52.50 303.50 527.00 666.00 950.00 820.00 587.40 e 169.95 c 11.50 1.55 a 4092.90
1926 0.00 11.00 112.50 371.00 405.00 697.00 913.97 b 820.43 b 368.00 255.00 32.50 2.14 b 3988.53
1927 0.00 a 0.00 24.50 150.52 a 324.98 a 640.00 869.00 818.00 429.50 234.50 15.50 6.00 3512.50
1928 0.00 0.00 63.50 132.50 567.00 605.50 907.50 769.00 564.00 220.00 15.00 0.00 3844.00
1929 0.00 0.00 40.50 135.50 428.00 574.00 799.00 898.50 474.50 321.50 0.50 1.50 3673.50
1930 0.00 19.50 81.00 313.50 390.50 536.50 866.50 877.50 553.00 154.00 25.50 0.00 3817.50
1931 0.00 1.50 47.50 205.00 532.00 581.50 849.00 827.00 490.50 197.50 24.50 0.00 3756.00
1932 0.00 14.00 42.50 199.50 381.50 654.50 734.50 780.00 562.00 235.50 30.00 5.50 3639.50
1933 0.00 0.00 d 10.00 175.00 259.00 586.50 820.50 835.50 395.50 289.00 25.50 33.00 3429.50
1934 3.00 7.50 155.00 403.50 514.50 596.50 799.50 822.00 409.50 268.50 42.50 0.00 4022.00
1935 2.50 0.50 29.93 b 115.50 366.00 537.00 774.00 734.00 595.50 227.50 0.00 0.00 3382.43
1936 0.00 2.50 32.00 331.50 604.00 673.50 855.00 807.00 525.00 316.00 4.66 a 3.00 4154.16
1937 0.00 0.00 46.50 146.50 470.00 628.50 891.50 692.50 609.50 320.50 33.50 1.00 3840.00
1938 0.00 0.00 25.00 231.00 423.50 685.00 935.00 730.05 a 761.00 303.50 11.50 5.50 4111.05
1939 5.00 0.00 98.00 293.50 527.50 550.00 894.50 903.50 634.50 261.50 22.00 24.00 4214.00
1940 0.00 2.50 141.00 237.00 626.50 764.00 897.50 869.50 698.00 319.00 2.50 0.50 4558.00
1941 0.00 11.00 153.00 323.00 414.50 588.00 970.30 a 798.00 388.50 206.15 a 47.00 15.50 3914.95
1942 0.00 0.00 47.00 258.00 356.50 555.00 625.50 g 879.50 605.00 297.50 4.50 0.00 3003.00
1943 0.00 0.00 24.00 260.50 341.00 517.00 830.00 740.00 661.50 309.00 18.00 12.00 3713.00
1944 0.00 0.00 46.50 234.00 464.50 620.00 880.00 804.00 619.00 438.50 35.00 9.50 4151.00
1945 3.00 5.50 24.00 131.00 457.50 544.00 856.00 844.50 458.50 319.00 19.50 0.00 3662.50
1946 0.00 0.00 36.00 213.00 478.50 515.50 800.50 798.50 501.50 121.50 0.50 6.00 3471.50
1947 0.50 13.00 111.50 238.00 540.50 528.00 818.50 713.00 536.50 295.50 11.00 0.00 3806.00
1948 0.00 5.50 25.00 127.00 367.00 723.00 716.00 728.50 509.00 230.00 2.00 0.00 3433.00
1949 0.00 0.50 11.50 209.50 486.50 539.50 778.50 886.00 617.00 108.50 51.50 0.00 3689.00
1950 0.00 0.00 8.00 115.00 378.00 587.50 820.50 816.50 601.50 155.50 11.00 10.00 3503.50
1951 0.00 7.50 18.60 a 220.50 421.00 567.50 863.50 778.00 552.50 188.50 6.00 4.50 3628.10
1952 0.00 0.00 41.00 259.00 449.50 565.50 855.00 721.50 554.00 286.50 4.66 a 0.00 3736.66
1953 14.00 3.50 77.00 170.50 336.50 462.50 834.00 799.50 604.00 294.50 57.41 a 0.00 3653.41
1954 2.50 10.50 14.50 118.00 490.00 502.00 796.50 705.00 538.50 175.50 103.50 0.00 3456.50
1955 0.00 0.00 3.50 66.00 316.00 660.00 779.65 a 822.00 592.50 217.50 9.00 0.00 3466.15
1956 0.00 0.00 r 33.00 298.50 559.50 553.50 921.50 833.50 605.50 214.50 2.50 4.50 4026.50
1957 0.00 5.50 31.50 248.28 a 590.50 659.50 794.50 723.50 693.00 184.00 11.00 3.00 3944.28
1958 0.50 67.00 49.50 160.50 660.00 755.50 958.50 981.00 542.50 287.50 50.50 1.50 4514.50
1959 9.00 0.00 30.00 240.50 328.50 613.50 888.00 726.00 493.00 189.00 40.00 2.00 3559.50
1960 0.00 0.00 121.50 195.00 353.50 640.00 997.50 744.00 599.00 303.50 6.00 0.00 3960.00
1961 5.50 16.00 84.00 176.50 435.50 807.00 967.50 1025.00 462.50 183.50 1.50 0.00 4164.50
1962 0.00 1.50 24.50 297.00 355.00 587.00 817.00 763.00 622.00 220.50 38.00 6.00 3731.50
1963 0.00 10.50 63.00 174.00 445.50 623.50 776.50 866.50 755.00 322.50 21.50 0.00 4058.50
1964 0.00 0.00 32.50 151.50 407.50 609.00 854.50 704.50 476.00 269.00 18.00 3.00 3525.50
1965 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 785.00 780.00 193.50 m 311.50 0.00 z 0.00 i 1876.50
1966 0.00 0.50 67.00 0.00 z 0.00 z 478.50 689.50 696.50 555.50 187.00 21.50 5.00 2701.00
1967 1.50 7.00 18.00 48.00 329.38 c 665.00 868.00 961.50 723.50 0.00 z 0.00 z 0.00 z 3621.88
1968 0.00 z 0.00 z 0.00 z 0.00 z 272.50 l 580.00 922.50 709.00 550.00 154.00 1.50 0.50 2917.50
1969 0.00 0.00 33.50 165.50 488.50 719.00 791.00 742.50 563.00 119.50 34.50 0.00 3657.00
1970 0.00 0.00 19.50 58.50 402.50 743.50 913.00 867.00 381.50 182.00 25.00 0.00 3592.50
1971 2.50 9.00 4.00 99.00 461.00 456.50 855.00 970.00 402.00 0.00 z 7.00 0.00 3266.00
1972 0.00 10.50 77.50 78.50 442.50 582.00 767.00 908.00 376.00 238.00 5.50 2.50 3488.00
1973 0.00 8.50 36.00 164.50 437.00 568.50 869.50 829.50 545.00 195.50 11.50 2.50 3668.00
1974 3.50 0.00 35.50 148.00 277.50 700.50 784.50 821.00 616.50 281.50 12.00 0.00 3680.50
1975 0.00 0.00 2.50 95.00 367.00 541.50 941.00 0.00 z 627.50 202.00 63.50 8.50 2848.50
1976 0.00 0.00 12.40 a 151.00 405.00 493.97 a 826.48 c 742.50 658.50 222.00 28.50 0.00 3540.35
1977 0.00 10.50 15.50 a 298.50 267.00 701.00 774.50 966.50 412.50 184.50 7.50 2.50 3640.50
1978 0.00 0.00 120.00 148.50 316.20 a 624.50 831.50 772.00 483.00 242.50 11.50 0.00 3549.70
1979 0.00 0.00 61.00 144.50 436.50 637.00 899.00 890.50 640.50 320.50 1.00 1.00 4031.50
1980 0.00 2.50 12.00 281.50 445.00 0.00 z 798.00 682.50 535.50 253.00 57.50 17.71 c 3085.21
1981 2.50 16.50 69.00 171.00 366.00 441.00 759.00 952.00 541.50 159.00 28.50 0.00 a 3506.00
1982 0.00 12.50 24.50 97.00 374.00 701.50 757.00 807.50 0.00 z 185.00 2.50 1.50 2963.00
1983 1.00 19.00 63.00 154.00 471.00 552.50 697.00 910.00 455.36 b 170.00 36.00 0.00 a 3528.86
1984 0.00 0.00 43.50 93.00 256.50 483.50 764.50 805.50 370.50 154.50 9.00 0.00 2980.50
1985 0.00 0.00 1.50 186.00 0.00 z 0.00 z 964.50 671.50 322.50 133.50 19.00 0.00 2298.50
1986 0.00 3.00 50.63 a 116.00 408.50 697.50 652.50 932.00 0.00 z 220.50 9.50 0.00 3090.13
1987 0.00 0.00 50.00 303.00 463.00 661.00 781.50 742.50 634.00 222.00 42.50 6.50 3906.00
1988 0.00 9.50 20.50 229.50 355.50 547.50 763.00 747.50 478.00 388.00 0.00 z 0.00 3539.00
1989 0.00 0.00 29.50 229.50 353.50 664.50 782.50 700.50 540.50 0.00 z 41.50 0.00 3342.00
1990 1.50 2.50 63.50 248.50 0.00 z 525.50 887.50 853.50 684.50 120.50 57.00 0.00 3444.50
1991 0.00 10.00 18.50 166.50 311.00 447.00 780.00 865.50 585.50 227.00 6.00 0.00 3417.00
1992 6.50 13.50 108.00 213.00 478.00 768.00 766.00 820.00 418.00 243.00 0.00 z 0.00 3834.00
1993 0.00 0.00 16.00 120.00 568.00 531.00 594.00 710.50 512.00 239.50 4.00 1.50 3296.50
1994 0.00 0.50 96.00 241.00 447.50 529.50 909.50 826.84 b 639.50 165.50 0.00 1.50 3857.34
1995 0.00 35.00 49.50 136.50 461.50 574.50 799.00 638.00 620.50 142.50 42.50 4.50 3504.00
1996 0.50 0.00 a 23.00 184.00 254.00 0.00 z 844.00 819.00 405.50 206.00 9.00 0.00 2745.00
1997 0.00 0.00 76.50 90.50 472.00 539.00 0.00 z 863.50 605.50 173.50 29.00 0.00 2849.50
1998 0.00 a 6.50 59.50 159.00 446.00 598.50 988.00 879.50 683.00 183.00 15.00 0.00 4018.00
1999 0.00 1.00 59.50 116.50 269.50 508.97 a 711.34 c 879.00 480.00 a 161.50 53.00 1.00 3241.30
2000 0.00 0.00 15.50 222.78 c 355.00 551.54 d 720.00 722.50 426.72 a 146.50 0.00 a 0.00 3160.54
2001 0.00 0.00 27.90 a 126.00 398.00 451.03 a 756.50 869.66 c 589.50 135.00 54.50 0.00 c 3408.10
2002 2.50 5.00 12.50 147.00 316.50 595.00 860.50 737.00 494.50 124.00 39.50 10.00 3344.00
2003 4.00 0.50 71.00 160.00 359.50 640.50 853.00 826.00 589.50 324.00 10.50 0.00 3838.50
2004 0.00 0.00 106.50 227.00 400.50 634.50 883.50 872.00 468.50 233.50 13.50 4.00 3843.50
2005 0.00 2.00 60.50 183.50 464.00 515.50 812.50 794.50 426.50 220.50 6.00 0.50 3486.00
2006 3.00 2.50 36.50 179.50 443.50 619.50 896.50 758.50 528.50 176.00 39.50 0.00 3683.50
2007 0.00 5.00 74.50 140.00 410.00 571.50 953.50 751.50 473.00 153.50 21.00 4.50 3558.00
2008 0.00 0.00 0.50 79.00 436.50 520.50 801.00 767.50 507.00 169.50 36.50 0.00 3318.00
2009 0.00 0.00 0.00 130.34 a 413.50 591.50 872.50 827.50 632.00 98.00 5.00 0.00 3570.34
2010 0.50 1.00 46.00 186.50 301.00 495.50 776.00 740.50 463.50 230.50 32.00 0.00 3273.00
2011 0.00 0.00 12.50 25.50 277.50 453.50 629.50 762.50 580.50 166.00 5.50 0.00 2913.00
2012 0.00 0.00 24.00 186.50 303.50 469.50 824.50 779.00 522.00 173.00 51.50 4.50 3338.00
2013 0.00 0.00 38.00 10.00 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 38.00
Period of Record Statistics
MEAN 1.66 4.36 48.14 184.42 412.89 588.99 829.14 808.25 537.21 222.32 22.48 2.88 3693.67
S.D. 7.48 8.66 37.07 75.60 90.96 84.82 80.96 77.88 94.87 67.39 19.32 5.43 312.72
SKEW 8.40 4.42 1.05 0.48 0.26 0.41 -0.33 0.32 0.02 0.44 1.17 2.97 0.25
MAX 72.00 67.00 155.00 403.50 660.00 807.00 997.50 1025.00 761.00 438.50 103.50 33.00 4558.00
MIN 0.00 0.00 0.00 25.50 161.95 436.00 594.00 638.00 322.50 98.00 0.00 0.00 2913.00
NO YRS 102 101 104 102 100 102 103 103 101 101 100 103 80