POMEROY, WASHINGTON

Monthly Total Growing Degree Days

(456610)

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
1891 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 361.50 h 0.00 z 18.50 18.50
1892 23.50 0.00 z 218.00 193.00 0.00 z 752.50 945.50 1037.00 820.00 561.00 0.00 z 0.00 z 4550.50
1893 0.00 z 0.00 z 0.00 z 187.50 0.00 z 631.50 958.50 0.00 z 651.00 256.50 99.00 45.00 g 2784.00
1894 38.50 16.50 130.50 337.00 595.50 689.50 0.00 z 1004.50 589.00 0.00 z 0.00 z 0.00 z 3401.00
1895 0.00 z 0.00 z 0.00 z 0.00 z 499.00 0.00 z 936.50 994.50 0.00 z 605.50 155.00 36.00 3226.50
1896 0.00 z 0.00 z 216.50 0.00 z 431.00 878.50 1267.00 1066.50 705.00 498.58 a 88.50 126.07 a 5277.65
1897 33.50 32.00 0.00 z 450.00 0.00 z 738.00 962.00 1205.50 666.50 442.00 0.00 z 55.50 4585.00
1898 0.00 z 0.00 z 56.50 418.50 571.00 811.00 1090.00 1237.50 800.00 332.00 74.50 43.50 5434.50
1899 87.50 30.07 a 68.00 293.00 485.50 789.50 1267.50 852.00 881.00 353.00 265.50 66.50 5439.07
1900 96.00 42.50 324.50 402.50 618.50 883.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2367.50
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1079.00 520.86 a 578.50 182.00 42.50 2402.86
1902 60.50 93.00 114.18 a 272.50 529.50 688.00 864.00 885.00 678.00 471.00 81.50 13.00 4750.18
1903 55.00 11.50 137.50 244.00 507.50 864.50 872.00 916.50 554.50 437.50 125.50 23.50 4749.50
1904 27.00 29.50 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 0.00 z 56.50
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 8.00 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 0.00 z 0.00 z 8.00
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 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
1910 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
1911 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
1912 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
1913 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
1914 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
1915 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
1916 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
1917 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
1918 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
1919 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
1920 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
1921 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
1922 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
1923 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 71.00 19.00 90.00
1924 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
1925 0.00 z 0.00 z 0.00 z 0.00 z 618.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 618.50
1926 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
1927 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
1928 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1064.50 584.50 l 0.00 z 0.00 z 0.00 z 0.00 z 1064.50
1929 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 376.00 s 539.00 449.50 75.00 89.00 1152.50
1930 11.50 107.00 161.00 387.50 452.08 a 649.50 981.50 950.00 670.50 187.50 0.00 z 0.00 z 4558.08
1931 0.00 z 12.00 136.00 266.50 590.50 701.50 931.00 897.00 574.14 a 303.00 98.50 22.50 4532.64
1932 7.50 85.96 a 102.50 324.00 476.88 a 729.50 827.00 0.00 z 624.50 349.00 174.00 25.00 3725.85
1933 17.00 9.50 94.60 b 245.50 352.76 b 685.50 890.00 0.00 z 0.00 z 403.00 a 109.14 a 120.50 2927.50
1934 91.00 102.67 d 195.00 i 472.00 628.86 c 666.11 c 875.75 a 867.00 530.36 b 417.35 d 193.93 b 23.00 4868.02
1935 53.50 33.50 58.50 194.50 467.50 674.50 870.50 798.00 689.00 342.50 35.00 12.00 4229.00
1936 24.50 23.50 118.50 402.00 644.00 715.00 926.00 847.50 562.00 410.00 36.00 61.50 4770.50
1937 0.00 15.50 172.50 216.00 521.00 669.00 941.50 775.50 644.50 440.00 139.50 39.50 4574.50
1938 27.00 7.50 118.00 277.50 484.50 741.00 970.00 797.50 809.50 393.00 72.50 82.50 4780.50
1939 45.50 8.00 179.00 343.00 574.00 617.00 912.50 895.00 676.50 341.00 133.00 153.50 4878.00
1940 27.00 65.00 239.50 327.93 a 602.50 796.50 941.00 861.00 728.00 431.50 33.00 55.00 5107.93
1941 25.50 60.00 230.50 344.50 493.00 628.50 967.00 862.50 485.50 264.00 154.00 72.00 4587.00
1942 2.00 14.00 123.50 331.50 407.50 540.50 908.50 909.50 628.00 381.00 62.50 49.50 4358.00
1943 4.81 b 18.50 120.50 367.76 a 406.00 566.00 921.50 816.00 708.00 395.25 a 49.50 30.50 4404.32
1944 16.00 19.50 115.50 296.38 a 494.50 670.50 949.50 846.00 735.50 532.50 103.50 22.50 4801.88
1945 52.00 54.50 78.00 217.00 497.55 a 575.17 a 946.50 859.00 461.38 a 392.00 82.00 41.00 4256.10
1946 10.50 74.00 268.84 b 276.00 455.50 557.50 914.50 a 923.28 a 620.00 242.50 52.00 77.00 4471.63
1947 28.00 57.00 207.00 337.00 708.00 644.00 959.50 691.00 f 682.00 385.50 40.50 14.35 d 4062.85
1948 25.32 a 21.50 47.61 c 220.50 428.00 794.50 814.00 850.50 641.50 326.50 55.50 3.50 4228.92
1949 0.00 g 36.00 110.50 415.00 635.00 722.00 942.00 913.00 684.00 229.00 184.00 20.00 4890.50
1950 1.00 51.50 80.00 181.11 c 438.00 653.50 942.00 913.50 670.50 344.50 100.50 70.50 4446.61
1951 25.00 36.50 61.00 286.00 494.50 628.00 938.00 878.50 660.00 319.50 57.50 16.00 4400.50
1952 6.00 54.00 80.50 350.50 558.00 b 0.00 z 941.00 898.00 737.00 504.50 50.00 33.00 4212.50
1953 162.50 66.00 129.00 256.50 450.50 541.50 884.50 897.00 707.00 437.50 178.50 35.50 4746.00
1954 30.50 75.50 47.50 230.00 521.50 548.50 852.00 796.50 600.00 302.00 196.00 23.00 4223.00
1955 1.00 11.50 30.00 139.50 367.00 738.00 856.50 895.00 620.69 a 375.50 62.00 37.00 4133.69
1956 27.00 12.89 b 100.00 342.00 562.50 619.50 957.00 873.00 667.50 301.50 35.00 50.50 4548.39
1957 0.00 45.11 a 83.00 255.50 539.50 723.00 860.50 776.50 698.00 272.50 52.00 47.00 4352.61
1958 44.36 b 146.50 69.00 214.50 697.50 a 779.00 993.50 1019.00 605.00 382.50 187.50 47.02 a 5185.38
1959 70.50 10.00 89.50 n 306.50 365.80 a 658.97 a 901.58 a 745.00 517.50 273.00 71.50 17.05 a 3937.40
1960 15.00 19.68 a 143.50 151.50 m 170.00 q 660.00 1052.50 799.00 626.50 360.00 84.00 5.00 3765.18
1961 22.50 93.00 127.58 e 228.00 462.42 a 836.50 970.00 1033.50 482.50 282.00 19.50 54.77 a 4612.26
1962 51.00 64.50 56.00 358.00 358.00 621.00 865.50 804.50 632.50 335.50 113.00 60.50 4320.00
1963 16.00 85.50 137.00 209.50 483.00 690.00 789.00 879.00 792.50 436.50 139.00 6.00 4663.00
1964 27.00 25.50 77.00 181.00 402.50 646.00 915.50 764.50 516.50 341.50 76.50 45.00 4018.50
1965 34.50 0.00 z 0.00 z 377.50 506.50 699.31 a 997.68 a 958.50 526.50 498.00 174.00 e 58.50 4830.99
1966 39.00 35.00 178.00 314.50 604.50 657.50 883.50 750.00 f 790.38 d 332.06 e 124.04 d 38.50 3996.98
1967 65.50 76.00 104.50 139.00 483.00 826.61 b 1024.50 1117.00 879.00 419.50 33.00 h 46.50 5181.11
1968 28.00 137.50 251.50 227.50 579.00 741.50 1043.00 858.50 675.50 322.50 75.00 a 27.00 4966.50
1969 2.00 5.50 145.50 319.50 600.50 847.50 909.00 881.50 746.50 306.26 b 118.00 47.50 4929.26
1970 41.50 42.50 83.00 140.00 557.50 868.00 1055.00 996.59 d 410.50 g 198.00 g 91.50 19.00 3894.59
1971 78.50 89.50 87.00 276.00 561.00 461.00 g 1036.71 e 1100.50 550.71 b 247.00 k 57.50 l 23.50 j 3779.93
1972 39.50 j 78.50 214.00 205.00 598.82 a 752.00 950.00 1009.05 a 545.00 337.50 86.00 86.50 4862.37
1973 46.50 58.50 149.00 275.50 600.00 760.50 1017.50 962.00 701.00 225.50 i 80.00 50.63 a 4701.13
1974 74.29 b 61.50 150.50 330.50 382.13 e 839.00 0.00 z 929.50 731.00 394.00 116.50 35.13 a 4044.06
1975 13.95 a 40.00 27.68 c 165.00 498.14 b 638.28 a 1106.00 847.50 702.69 d 405.50 145.38 d 65.10 a 4655.22
1976 45.00 g 48.00 73.50 264.50 567.50 629.00 987.50 859.00 811.00 367.00 108.50 11.50 i 4715.50
1977 12.00 125.00 105.00 469.50 419.00 871.50 954.50 1056.50 585.00 370.00 134.50 84.00 5186.50
1978 40.19 d 69.00 267.00 321.00 473.27 a 819.00 1007.00 917.00 651.50 386.50 63.50 13.00 5027.95
1979 0.00 42.00 163.50 286.00 591.00 787.50 1022.50 988.38 a 812.00 467.50 37.00 78.53 a 5275.92
1980 8.00 59.04 a 103.00 444.00 524.50 613.00 970.00 804.00 717.00 378.50 137.00 141.50 4899.54
1981 46.00 94.50 176.50 309.50 489.00 641.50 917.00 1065.00 700.50 317.23 a 125.17 a 57.00 4938.91
1982 28.50 88.00 108.00 216.50 516.00 813.50 927.50 990.00 674.00 345.00 49.50 25.50 4782.00
1983 91.00 134.50 221.00 261.50 587.00 708.00 901.00 1062.00 593.50 372.50 135.00 2.50 5069.50
1984 62.50 18.00 162.50 217.50 450.00 669.00 1003.00 1011.00 622.00 267.63 a 16.50 0.00 4499.63
1985 0.00 b 60.00 j 127.88 c 291.50 438.00 810.00 1169.00 961.50 532.00 318.50 9.50 l 0.00 l 4648.38
1986 19.50 j 89.00 273.83 a 304.50 626.50 913.00 887.00 1106.00 565.50 406.00 32.50 o 1.00 5172.33
1987 16.50 43.00 180.50 483.50 645.00 755.50 882.98 a 596.50 k 771.00 249.00 o 42.50 n 0.00 z 3777.98
1988 15.00 p 22.00 i 76.50 352.00 548.50 702.00 932.00 864.50 643.00 499.50 111.50 22.00 4751.50
1989 30.50 5.50 132.00 349.00 429.50 774.00 951.50 879.00 717.50 367.50 189.50 32.50 4858.00
1990 76.00 75.50 222.00 495.00 540.50 777.00 1107.50 974.00 769.00 329.00 152.00 23.00 5540.50
1991 29.50 130.50 71.82 a 313.50 493.00 419.00 j 990.00 706.00 k 528.50 j 378.00 97.00 36.00 m 2503.32
1992 67.50 i 74.50 j 184.50 i 273.00 k 349.00 m 872.00 912.50 984.00 656.90 a 299.00 i 39.50 i 3.88 c 3429.27
1993 15.00 p 16.50 i 117.00 267.50 713.00 719.00 749.00 773.50 605.00 418.50 30.00 35.65 a 4428.15
1994 80.50 35.00 214.00 400.71 b 569.50 700.00 978.00 931.50 728.00 293.50 28.89 c 48.50 5008.10
1995 42.00 100.00 149.50 236.50 492.00 595.00 871.00 760.50 672.50 241.50 189.00 30.50 4380.00
1996 42.50 0.00 z 78.50 304.50 360.00 636.00 923.50 917.00 501.00 298.50 56.50 17.00 4135.00
1997 30.50 34.00 150.00 0.00 z 523.00 616.00 861.50 956.50 683.28 a 354.00 113.50 9.50 4331.78
1998 50.50 55.00 148.50 260.50 434.50 634.50 1043.00 952.50 749.50 273.00 115.50 45.98 a 4762.98
1999 50.00 37.50 99.50 164.50 353.50 580.38 d 848.00 922.00 532.00 279.50 171.21 a 30.47 b 4068.56
2000 2.07 a 37.00 67.00 332.00 471.50 628.33 c 834.50 804.45 a 541.00 209.50 6.00 0.00 3933.35
2001 2.58 a 4.00 122.00 194.50 492.00 557.07 a 836.00 889.50 680.00 c 277.97 a 118.00 13.71 e 4187.33
2002 15.00 27.50 43.00 213.50 405.50 658.00 928.00 780.00 578.00 203.00 98.50 44.50 3994.50
2003 56.00 30.00 148.50 233.50 431.00 706.50 978.00 724.50 f 696.00 435.50 54.31 a 2.00 3771.31
2004 11.00 0.00 z 205.00 284.50 444.00 673.00 923.50 900.00 524.40 e 305.50 47.50 38.50 4356.90
2005 46.50 7.00 115.50 234.50 491.00 571.00 873.50 862.66 b 431.40 e 315.00 29.48 a 48.05 a 4025.59
2006 51.00 35.00 77.50 211.50 456.00 662.00 999.50 825.78 b 529.80 e 250.00 133.00 19.50 4250.58
2007 10.50 25.50 159.50 197.50 444.50 628.00 963.21 c 761.16 c 515.19 d 279.50 73.00 28.50 4086.07
2008 9.00 32.50 36.00 108.00 439.17 a 564.50 857.00 851.39 c 566.79 b 264.50 117.50 20.15 a 3866.50
2009 24.50 11.85 b 40.00 164.50 431.42 a 657.00 897.45 a 880.00 494.00 h 159.43 c 66.50 7.00 3339.64
2010 40.00 24.50 114.00 0.00 z 296.00 0.00 z 0.00 z 0.00 z 562.00 329.50 84.50 37.50 1488.00
2011 65.00 30.00 78.00 104.48 a 320.00 510.56 c 717.81 b 850.95 a 665.00 307.50 37.00 19.50 3705.80
2012 11.76 b 5.58 c 76.00 269.00 405.00 562.76 a 883.50 846.50 601.07 b 251.00 129.31 a 35.50 4076.98
2013 11.00 10.00 112.63 a 23.50 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 133.63
Period of Record Statistics
MEAN 34.28 48.40 129.27 283.29 501.76 697.29 943.38 912.56 645.83 356.76 99.00 39.74 4574.31
S.D. 28.46 35.33 63.04 87.49 88.89 95.00 90.35 102.20 96.84 87.36 52.11 30.43 421.40
SKEW 1.43 0.88 0.75 0.34 0.14 0.31 0.97 0.80 0.14 0.43 0.55 1.47 0.14
MAX 162.50 146.50 324.50 495.00 713.00 913.00 1267.50 1237.50 881.00 605.50 265.50 153.50 5540.50
MIN 0.00 4.00 27.68 104.48 296.00 510.56 717.81 745.00 431.40 159.43 6.00 0.00 3705.80
NO YRS 85 84 88 88 90 89 91 85 90 89 86 88 54