RICHLAND, OREGON

Monthly Total Growing Degree Days

(357160)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
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 49.50 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 68.00
Period of Record Statistics
MEAN 8.68 31.19 125.27 308.43 568.38 772.92 1019.08 985.52 678.60 346.21 65.13 10.48 4773.92
S.D. 11.30 34.40 74.85 112.17 94.69 94.90 132.70 82.06 100.56 103.90 53.27 11.80 258.32
SKEW 1.14 1.64 1.01 1.12 0.65 0.64 -2.51 0.33 0.47 0.36 1.38 1.21 0.06
MAX 38.50 145.00 350.00 705.50 868.00 1039.50 1252.00 1186.00 945.52 587.00 228.00 45.00 5299.43
MIN 0.00 0.00 2.50 125.00 388.00 612.50 353.50 844.00 485.50 159.13 0.50 0.00 4367.50
NO YRS 47 50 53 47 49 47 52 48 49 48 47 46 20