RICHLAND, OREGON

Monthly Total Growing Degree Days

(357160)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201110
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 1.08 b 82.50 0.00 z 556.97 a 749.00 1039.53 a 1139.50 621.00 164.50 q 95.00 26.50 4311.08
1894 26.00 0.00 132.00 371.50 652.50 713.00 1094.00 1033.00 0.00 z 0.00 z 0.00 z 0.00 z 4022.00
1895 0.00 z 0.00 z 0.00 z 312.50 525.50 734.00 922.50 990.93 b 471.50 458.50 144.00 2.00 4561.43
1896 26.50 18.50 105.50 194.50 362.50 810.00 1139.00 988.50 614.00 436.58 a 96.50 0.00 z 4792.08
1897 0.00 z 0.00 z 16.03 b 0.00 z 0.00 z 551.79 b 777.00 932.50 529.00 263.50 b 72.50 1.00 3143.32
1898 0.00 14.00 17.50 335.50 491.83 e 726.00 909.50 927.00 299.50 g 0.00 z 0.00 z 0.00 z 3421.33
1899 0.50 2.00 44.00 212.50 365.00 646.50 899.50 665.00 605.50 139.00 59.50 0.00 3639.00
1900 0.00 1.00 115.50 207.50 466.00 756.50 846.82 a 670.00 464.00 107.00 f 18.50 13.50 3559.32
1901 6.50 19.00 35.13 a 98.00 464.00 523.00 915.00 979.00 442.50 415.00 21.00 y 0.00 z 3897.13
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 34.50 m 27.22 c 2.50 f 27.22
1906 0.00 d 7.50 78.00 305.17 a 437.50 391.00 g 1075.91 b 906.23 a 626.50 0.00 z 78.75 b 24.50 3540.07
1907 10.13 e 93.13 e 102.82 a 54.50 v 560.00 652.50 914.50 c 836.00 646.50 543.00 50.00 9.00 4417.58
1908 9.50 g 30.50 m 91.50 289.50 i 377.00 709.20 e 1015.80 c 643.50 h 465.00 h 268.00 99.50 j 0.00 2461.50
1909 48.50 29.62 b 56.00 g 199.50 304.00 i 729.00 e 218.50 w 904.34 b 641.50 327.00 125.50 0.00 a 3004.96
1910 1.50 5.00 200.00 387.50 563.50 714.50 997.50 789.50 581.00 325.00 70.34 a 2.50 4637.84
1911 8.27 a 2.07 a 131.50 213.50 353.00 736.50 708.00 h 539.00 k 327.50 i 220.50 34.00 0.00 b 1699.34
1912 0.00 a 7.25 a 48.00 236.00 475.69 b 731.25 b 839.00 792.57 a 458.00 200.98 a 87.60 e 1.55 a 3877.89
1913 2.07 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 260.50 o 214.00 99.50 0.00 315.57
1914 0.00 z 4.85 b 170.50 b 334.62 d 621.15 d 636.21 a 0.00 z 934.02 d 0.00 z 0.00 z 0.00 z 0.00 f 2701.33
1915 0.00 a 43.00 221.98 c 421.67 c 468.50 679.62 d 929.50 1136.67 a 579.44 c 349.00 44.50 16.50 4890.38
1916 3.50 13.50 148.50 330.00 373.00 652.00 941.88 a 917.50 625.00 236.00 51.11 c 0.00 h 4291.99
1917 1.00 0.00 6.00 224.00 475.00 650.00 1103.00 990.00 762.00 356.50 100.50 90.93 a 4758.93
1918 14.50 25.00 192.00 284.50 480.50 977.00 991.50 849.00 717.93 a 380.50 19.50 0.00 4931.93
1919 5.50 f 3.00 121.50 303.50 551.00 784.00 1004.50 1015.54 d 623.50 218.00 29.00 0.00 4653.54
1920 2.50 1.50 75.50 225.54 b 441.50 652.76 a 1059.34 b 940.00 631.00 257.00 34.50 14.50 4335.64
1921 0.00 z 0.00 z 110.57 a 181.50 500.50 772.00 952.00 936.20 a 449.50 371.00 95.00 4.50 4372.77
1922 0.00 0.50 55.00 0.00 z 0.00 z 885.60 e 1080.00 1014.22 a 724.00 431.50 6.50 0.00 4197.32
1923 0.00 z 0.00 z 0.00 z 0.00 z 572.35 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 572.35
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 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
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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 66.50 2.50 69.00
1945 13.50 18.50 88.00 188.50 g 523.50 626.50 999.00 908.82 a 592.24 a 403.55 c 65.00 6.50 4245.11
1946 0.00 8.08 b 156.50 375.00 561.00 688.50 974.00 926.50 549.00 181.02 c 40.00 25.00 4484.60
1947 3.00 72.50 210.00 303.00 759.00 614.50 1006.00 877.00 679.00 465.50 32.50 0.50 5022.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 889.00 852.50 677.00 318.50 k 86.00 1.00 2505.50
1949 0.00 0.00 z 166.00 371.00 665.00 716.50 936.72 a 1001.00 746.00 244.38 a 130.50 3.62 a 4980.72
1950 0.00 z 36.50 30.48 a 319.00 482.50 675.58 d 958.00 966.00 673.50 510.50 160.50 45.00 4857.56
1951 0.00 z 0.00 z 31.00 371.50 644.50 732.00 1089.00 955.00 713.50 319.50 63.50 18.50 4938.00
1952 1.50 1.50 2.50 345.00 394.00 n 748.50 1141.00 1029.72 a 751.50 519.00 85.00 33.50 4658.72
1953 59.50 k 33.00 162.50 0.00 z 410.00 h 703.50 1132.00 1047.00 747.00 235.00 114.50 g 1.50 4061.50
1954 0.00 57.50 0.00 v 125.00 508.50 0.00 z 1162.50 a 878.00 0.00 z 155.00 k 69.44 c 9.00 2809.94
1955 1.00 0.50 16.53 a 171.72 a 520.00 808.50 1071.00 1051.50 726.00 444.00 23.57 b 0.00 z 4834.33
1956 22.73 a 7.00 171.00 235.00 g 632.50 0.00 z 1137.00 982.50 755.36 b 363.50 7.80 e 12.00 4091.39
1957 0.00 47.00 146.50 0.00 z 642.00 804.00 1033.00 1013.50 838.00 159.13 a 0.00 k 0.00 z 4683.13
1958 0.00 z 121.50 81.63 a 302.50 799.50 872.00 1153.50 1140.00 648.00 0.00 z 56.50 i 0.00 z 5118.63
1959 37.50 19.00 101.00 347.00 428.50 718.00 f 1020.50 1012.87 e 691.00 377.50 33.00 2.00 4069.87
1960 0.00 j 3.00 350.00 323.50 528.79 e 807.50 1223.50 968.00 690.00 495.50 220.00 6.72 a 5616.51
1961 0.00 145.00 146.50 343.50 589.50 994.29 b 1100.50 b 1186.00 552.00 313.00 12.50 m 0.00 5370.29
1962 12.50 7.00 136.50 521.00 572.50 777.50 986.00 924.50 705.50 378.50 99.50 i 12.50 5034.00
1963 0.00 115.50 209.00 0.00 z 685.50 721.50 1000.00 1030.50 857.50 587.00 214.00 f 0.00 d 5206.50
1964 6.00 2.50 159.00 276.50 548.70 a 709.50 1014.00 930.50 596.00 487.50 92.50 28.50 4851.20
1965 22.00 27.50 33.00 501.50 607.08 a 789.50 1033.00 980.50 585.00 421.50 172.00 3.00 5175.58
1966 22.00 19.00 343.00 373.50 589.00 812.00 1015.50 1099.00 910.00 331.50 g 228.00 18.60 a 5429.60
1967 9.00 31.50 94.00 66.00 k 541.50 700.50 f 1137.00 1145.00 827.50 326.02 a 97.00 2.00 4210.52
1968 2.00 111.00 221.00 193.00 543.50 838.20 e 868.50 f 878.50 679.00 294.00 52.50 14.50 3827.20
1969 3.00 0.00 113.50 378.00 654.00 779.50 967.00 1014.39 d 707.31 d 177.50 84.00 12.00 4890.20
1970 25.50 42.00 98.00 200.00 566.50 897.50 1050.00 1066.50 521.38 a 293.50 85.00 12.50 4858.38
1971 17.50 14.50 53.50 236.50 599.00 557.00 f 1048.50 1134.00 518.00 314.00 48.50 2.00 3986.00
1972 23.00 32.00 182.00 230.50 638.00 819.00 966.50 1016.00 542.00 346.00 49.50 7.50 g 4844.50
1973 31.50 44.50 167.00 324.83 a 589.50 777.50 992.50 957.50 637.50 292.00 68.50 12.00 4894.83
1974 38.50 10.50 76.00 272.00 449.00 927.00 989.00 905.00 688.50 298.00 55.50 3.00 4712.00
1975 0.00 13.00 54.00 138.50 511.00 686.00 1077.00 887.00 709.50 345.13 a 52.00 5.00 4478.13
1976 0.00 25.00 50.00 258.50 550.00 675.50 1057.00 873.50 746.50 413.50 156.50 0.00 a 4806.00
1977 0.00 n 0.00 z 0.00 z 441.50 512.00 929.00 988.00 999.50 652.76 a 367.00 48.00 15.50 4953.26
1978 12.00 36.00 282.00 319.50 467.50 715.50 1015.50 873.00 600.50 390.50 36.00 0.00 4748.00
1979 0.00 12.00 183.00 309.50 605.00 800.50 1065.50 1009.50 790.00 490.00 21.43 b 13.00 5299.43
1980 27.50 63.00 107.00 369.00 563.50 656.50 1017.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2804.00
1981 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
1982 0.00 z 0.00 z 121.00 223.50 554.00 811.00 993.50 982.50 732.00 432.50 0.00 z 17.50 4867.50
1983 6.64 c 45.00 230.50 259.50 564.89 d 720.50 353.50 0.00 z 602.50 444.00 115.50 10.85 a 3353.38
1984 1.50 1.50 102.50 541.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 269.24 d 25.00 0.00 z 940.74
1985 0.00 z 0.00 25.00 705.50 868.00 0.00 z 0.00 z 0.00 z 945.52 a 0.00 z 0.00 z 0.00 z 2544.02
1986 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1049.50 485.50 311.50 36.00 0.00 a 1882.50
1987 0.00 10.50 114.00 436.50 644.50 828.33 c 936.50 886.60 a 684.50 370.00 88.50 39.50 5039.43
1988 0.00 23.63 b 95.00 315.00 525.50 814.00 1011.00 909.00 584.50 557.00 84.50 0.00 4919.13
1989 0.00 0.00 109.50 324.00 439.50 785.00 1030.50 878.00 604.50 291.50 33.00 0.00 4495.50
1990 18.00 3.00 108.50 400.50 437.50 692.00 1045.50 977.00 810.00 217.50 35.50 0.00 4745.00
1991 0.00 24.00 64.50 215.00 388.00 612.50 1013.50 1041.50 675.50 341.00 20.00 0.00 4395.50
1992 1.00 78.50 248.50 353.50 670.00 841.00 874.00 936.00 568.00 375.50 16.00 0.50 4962.50
1993 0.00 0.50 85.00 189.00 660.50 621.00 696.00 548.00 l 0.00 z 140.00 l 3.50 9.00 2264.50
1994 1.00 8.50 138.50 333.50 589.00 721.50 1037.50 1019.00 729.00 277.00 3.50 2.00 4860.00
1995 23.50 81.00 112.00 202.00 502.00 665.50 966.00 844.00 704.00 192.50 82.50 32.50 4407.50
1996 0.00 59.00 112.00 259.50 444.50 722.00 1054.00 977.50 582.00 301.00 33.50 27.50 4572.50
1997 16.00 7.00 132.50 0.00 z 0.00 z 749.50 909.50 0.00 z 0.00 z 256.00 46.50 0.00 z 2117.00
1998 0.00 z 43.50 109.00 229.00 520.50 635.00 1125.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2662.00
1999 7.00 11.50 92.00 185.00 431.50 0.00 z 931.00 917.50 617.50 0.00 z 75.50 0.00 z 3268.50
2000 4.81 b 21.23 a 57.41 d 111.50 t 0.00 z 833.00 1199.50 0.00 z 633.00 271.50 0.50 0.00 3020.95
2001 0.00 0.00 z 148.50 252.00 685.00 1039.50 1008.50 1105.00 0.00 z 171.00 40.34 a 0.00 z 4449.84
2002 0.00 11.50 0.00 z 0.00 z 668.05 a 734.50 0.00 z 0.00 z 0.00 z 227.50 25.00 29.50 1696.05
2003 11.00 29.50 109.50 197.00 0.00 z 918.50 1252.00 1011.50 634.00 493.00 23.00 11.00 4690.00
2004 0.00 2.50 h 188.00 288.50 509.50 763.50 1072.00 982.50 603.50 339.00 33.50 15.50 4795.50
2005 0.00 6.50 119.00 223.00 514.00 645.50 1016.50 980.00 572.50 277.00 13.50 0.00 4367.50
2006 3.00 15.50 42.00 257.00 516.00 793.00 1204.00 909.00 625.00 262.50 121.50 7.00 4755.50
2007 0.00 20.50 175.00 269.00 563.50 788.00 1177.00 936.00 612.50 213.50 27.50 10.00 4792.50
2008 1.50 2.00 15.50 130.00 506.50 673.50 989.00 931.00 588.00 267.00 66.00 7.50 4177.50
2009 0.00 11.00 42.50 217.00 472.00 684.00 1026.00 951.00 721.50 156.00 30.50 0.00 4311.50
2010 3.50 7.50 63.00 193.50 314.00 643.50 946.00 904.50 635.00 388.00 99.00 1.50 4199.00
2011 0.00 a 24.00 35.13 a 84.31 a 332.50 614.50 920.00 1006.00 747.00 294.00 0.00 z 0.00 z 4057.44
Period of Record Statistics
MEAN 7.75 25.51 115.70 289.38 537.44 745.32 1008.20 961.78 651.46 333.24 64.73 10.00 4655.68
S.D. 11.21 31.08 71.31 105.41 102.76 97.90 120.98 94.96 101.95 104.62 46.74 14.27 355.86
SKEW 1.59 1.92 0.89 0.98 0.37 0.59 -1.92 -0.34 0.31 0.32 1.29 2.93 -0.83
MAX 48.50 145.00 350.00 705.50 868.00 1039.50 1252.00 1186.00 945.52 587.00 228.00 90.93 5299.43
MIN 0.00 0.00 2.50 84.31 314.00 523.00 353.50 665.00 442.50 139.00 0.50 0.00 3639.00
NO YRS 75 79 84 75 81 80 83 80 78 77 78 75 34