RICHLAND, OREGON

Monthly Total Heating Degree Days

(357160)

Base Temperature = 65 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 1072.50 886.31 b 754.50 0.00 z 233.02 a 50.00 6.20 a 0.00 205.50 185.50 q 719.00 831.00 4758.02
1894 937.00 914.00 695.50 378.50 176.50 89.50 8.50 0.50 0.00 z 0.00 z 0.00 z 0.00 z 3200.00
1895 0.00 z 0.00 z 0.00 z 440.00 259.50 124.00 25.00 10.16 b 284.00 316.50 635.00 1059.00 3153.16
1896 993.50 850.50 749.00 565.00 426.50 75.50 0.00 0.00 166.00 343.07 a 804.50 0.00 z 4973.57
1897 0.00 z 0.00 z 957.26 b 0.00 z 0.00 z 200.36 b 75.00 9.50 225.00 515.78 b 827.50 1053.00 3863.39
1898 1338.00 834.50 887.00 421.50 293.90 e 100.00 26.50 14.50 275.50 g 0.00 z 0.00 z 0.00 z 3915.90
1899 1010.50 1049.00 776.50 542.00 413.50 135.50 12.50 141.50 157.00 650.50 725.50 1270.50 6884.50
1900 1034.50 941.00 672.50 554.00 309.00 63.00 25.32 a 128.00 286.00 532.50 f 889.50 957.00 5859.82
1901 1064.00 909.00 806.00 a 671.00 311.50 243.00 29.00 3.00 310.00 360.00 106.50 y 0.00 z 4706.50
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 434.50 m 848.89 c 896.50 f 848.89
1906 1196.37 d 874.00 926.50 444.83 a 340.50 187.00 g 0.00 b 7.23 a 141.50 0.00 z 865.18 b 905.00 5701.11
1907 1117.19 e 614.78 e 677.87 a 145.50 v 224.50 162.00 31.00 c 56.50 132.00 232.00 753.50 986.50 4987.84
1908 754.00 g 440.50 m 751.50 237.50 i 398.00 96.00 e 2.21 c 54.50 h 123.50 h 516.00 462.50 j 1134.00 2897.71
1909 985.00 750.62 b 582.00 g 562.00 247.00 i 67.80 e 25.00 w 13.90 b 141.50 449.00 700.00 1267.38 a 4937.20
1910 1266.00 1057.00 582.00 363.00 224.50 85.00 0.00 57.50 179.50 451.00 778.97 a 970.00 6014.47
1911 1060.72 a 995.56 a 684.00 556.00 422.00 78.50 17.00 h 9.50 k 203.50 i 556.50 867.00 1124.02 b 6344.29
1912 1230.70 a 842.04 a 813.00 514.00 299.84 b 87.32 b 52.50 64.07 a 294.00 601.40 a 751.20 e 1083.45 a 6633.52
1913 1180.07 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 120.50 o 570.00 697.00 1120.00 3567.07
1914 0.00 z 889.00 b 614.12 b 415.38 d 163.04 d 170.69 a 0.00 z 10.91 d 0.00 z 0.00 z 0.00 z 1070.50 f 2263.14
1915 1159.92 a 681.00 561.32 c 332.22 c 307.50 110.19 d 20.00 0.00 a 174.44 c 426.00 856.50 1080.50 5709.60
1916 1338.00 848.50 654.50 420.00 403.00 140.50 23.77 a 36.50 154.50 539.00 851.67 c 959.00 h 5409.93
1917 1379.50 1027.50 1029.50 529.00 302.00 139.00 0.00 0.00 50.00 427.50 683.50 766.22 a 6333.72
1918 976.00 815.00 609.00 480.50 295.50 22.00 6.00 45.00 57.93 a 394.50 856.50 1104.50 5662.43
1919 948.00 f 826.00 669.50 446.50 253.00 80.00 2.00 4.02 d 134.00 598.00 843.50 1353.00 5209.52
1920 1218.00 834.00 723.00 543.75 b 333.50 113.28 a 1.07 b 43.00 144.00 527.50 813.00 921.00 6215.09
1921 0.00 z 0.00 z 689.75 a 585.50 274.50 56.50 24.50 3.10 a 303.50 404.00 712.50 1021.50 4075.35
1922 1433.50 1016.00 869.00 0.00 z 0.00 z 21.60 e 4.50 7.23 a 88.50 355.00 882.50 1100.50 5778.33
1923 0.00 z 0.00 z 0.00 z 0.00 z 215.85 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 215.85
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 769.50 1075.50 1845.00
1945 1013.50 767.00 745.00 405.00 g 255.50 153.50 0.00 20.67 a 192.41 a 376.98 c 783.00 1071.00 5378.56
1946 1068.00 911.08 b 633.00 375.00 215.00 104.00 5.00 5.00 210.00 619.45 c 805.00 936.50 5887.02
1947 1226.00 702.50 590.50 449.00 79.00 145.00 0.00 24.50 111.00 315.50 818.50 1014.50 5476.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 11.50 24.00 137.00 189.00 k 731.50 1273.50 2177.50
1949 1733.50 0.00 z 622.00 384.00 168.50 96.50 2.58 a 3.00 82.00 536.82 a 639.50 995.62 a 5264.02
1950 0.00 z 832.50 800.32 a 432.50 293.50 121.73 d 0.50 8.00 131.00 264.50 652.00 825.00 4361.55
1951 0.00 z 0.00 z 853.00 378.50 137.50 75.50 0.00 25.00 60.50 463.50 813.00 1122.00 3928.50
1952 1194.00 998.50 979.00 408.50 49.00 n 64.50 0.00 1.55 a 62.50 257.00 843.50 820.50 5629.55
1953 449.50 k 738.50 637.00 0.00 z 178.50 h 63.50 0.00 10.00 99.00 540.50 487.50 g 1184.50 3273.00
1954 1131.50 712.50 327.00 v 639.50 309.00 0.00 z 0.52 a 54.50 0.00 z 345.50 k 808.89 c 1054.50 4710.91
1955 1180.50 1027.00 931.03 a 584.48 a 262.50 36.50 10.00 0.00 103.00 331.00 906.43 b 0.00 z 5372.44
1956 919.15 a 1018.00 662.00 342.50 g 195.00 0.00 z 0.00 17.50 59.46 b 423.50 938.40 e 1068.00 5301.01
1957 1471.50 869.00 646.00 0.00 z 167.50 40.00 0.00 0.00 10.00 633.43 a 687.50 k 0.00 z 3837.43
1958 0.00 z 591.50 734.18 a 447.50 62.00 30.00 0.00 0.00 119.50 0.00 z 555.00 i 0.00 z 1984.68
1959 884.50 770.00 725.50 403.00 346.50 12.50 f 23.00 1.79 e 94.50 410.00 853.00 1025.50 5537.29
1960 836.00 j 877.50 425.00 426.50 250.98 e 5.50 0.00 21.00 108.50 279.50 542.00 1027.13 a 3963.61
1961 992.00 579.50 666.50 407.50 209.00 2.68 b 0.00 b 0.00 203.50 470.00 467.50 m 1014.50 4545.18
1962 1275.00 940.00 681.00 241.50 213.50 64.50 20.50 21.50 68.00 396.50 460.00 i 914.50 4836.50
1963 1314.50 606.50 575.50 0.00 z 118.50 92.00 3.00 6.00 38.50 213.00 386.00 f 1106.81 d 4074.31
1964 1047.50 999.50 657.00 473.50 228.37 a 76.50 8.50 36.00 154.50 289.00 755.00 961.00 5686.37
1965 902.50 738.00 845.50 266.00 203.57 a 43.00 4.50 25.00 179.00 353.50 609.00 990.50 5160.07
1966 885.00 795.50 499.00 376.50 213.50 30.50 7.00 4.00 1.50 273.50 g 533.50 914.50 a 4260.50
1967 918.00 736.50 709.50 415.50 k 250.50 24.50 f 0.00 0.00 35.50 448.98 a 725.00 1131.50 4955.48
1968 1042.50 626.50 555.00 566.50 231.50 17.40 e 1.00 f 44.00 136.00 481.00 738.00 1024.50 5462.90
1969 1021.00 863.00 710.00 372.50 161.00 88.00 4.50 0.00 d 101.54 d 611.00 758.00 922.00 5612.54
1970 946.50 713.00 696.50 556.50 212.50 57.00 8.00 0.00 237.93 a 497.50 713.00 1073.50 5711.93
1971 987.00 758.00 827.00 514.00 192.50 91.00 f 7.50 4.00 239.50 500.00 813.00 1113.50 5956.00
1972 1039.00 918.50 612.50 534.50 170.50 46.50 23.50 2.00 224.00 450.00 774.00 1029.00 g 4795.00
1973 992.00 705.50 616.50 430.34 a 215.50 109.00 1.50 7.00 139.50 483.00 752.50 868.50 5320.84
1974 1197.50 782.00 748.00 478.00 330.50 50.50 18.00 8.00 78.00 478.00 761.00 1068.50 5998.00
1975 1188.00 881.50 796.00 635.00 265.00 105.50 9.50 19.50 78.00 441.75 a 825.00 1051.00 6295.75
1976 1063.00 896.50 810.00 496.50 227.00 118.50 0.00 24.00 49.00 361.50 669.50 1101.02 a 5816.52
1977 731.50 n 0.00 z 0.00 z 313.00 263.00 2.00 15.00 35.00 160.34 a 408.00 802.00 866.50 2864.84
1978 881.00 701.00 500.00 430.50 308.00 70.50 1.50 43.50 182.00 396.00 895.50 1230.50 5640.00
1979 1588.50 884.00 606.50 442.00 191.50 64.00 7.50 0.00 26.50 299.00 909.11 b 905.50 5924.11
1980 1016.00 731.50 693.00 387.00 217.50 136.50 1.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3182.50
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 662.00 532.00 228.00 36.50 0.00 2.50 94.00 342.50 0.00 z 1027.00 2924.50
1983 913.95 c 739.50 544.50 499.50 242.26 d 64.00 428.00 0.00 z 159.50 331.00 711.50 1166.12 a 5799.82
1984 1246.50 1045.50 696.50 222.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 521.83 d 784.00 0.00 z 4516.33
1985 0.00 z 1008.00 817.00 109.00 40.50 0.00 z 0.00 z 0.00 z 37.76 a 0.00 z 0.00 z 0.00 z 2012.26
1986 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.00 289.00 463.50 786.00 1082.93 a 2623.43
1987 1203.50 776.50 695.00 331.00 163.00 62.78 c 24.00 20.67 a 114.00 405.00 742.50 1010.50 5548.44
1988 1196.50 858.19 b 716.00 441.50 268.50 91.50 8.00 11.50 196.00 222.00 763.50 1221.50 5994.69
1989 1375.50 1349.50 738.50 426.00 335.50 49.00 0.00 40.50 146.00 494.00 784.00 1059.50 6798.00
1990 940.00 899.50 698.00 349.50 337.50 150.00 9.00 20.50 29.00 565.00 797.00 1391.00 6186.00
1991 1294.50 737.50 755.00 540.50 387.00 152.50 0.00 0.00 112.00 466.00 861.50 1046.50 6353.00
1992 1022.50 687.50 526.50 401.00 135.00 61.00 24.50 52.50 197.50 410.50 885.00 1183.00 5586.50
1993 1330.00 1063.00 791.50 562.00 169.00 157.00 102.00 16.50 l 0.00 z 335.00 l 1048.50 1016.00 6239.00
1994 982.50 923.50 661.50 419.00 217.50 123.50 19.00 3.50 58.00 501.50 988.00 1084.50 5982.00
1995 981.50 692.50 694.00 552.00 277.00 123.50 16.50 45.50 100.50 591.50 726.50 964.00 5765.00
1996 1029.00 893.50 685.50 490.50 331.00 78.50 5.50 14.00 200.50 501.50 781.00 950.00 5960.50
1997 1056.00 824.00 673.50 0.00 z 0.00 z 35.00 33.00 0.00 z 0.00 z 522.00 751.00 0.00 z 3894.50
1998 0.00 z 750.50 701.50 527.00 254.50 129.50 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2363.00
1999 922.00 879.00 746.00 581.00 355.50 0.00 z 19.00 19.00 166.00 0.00 z 708.00 0.00 z 4395.50
2000 1003.22 b 767.98 a 751.46 d 142.00 t 0.00 z 42.00 0.00 0.00 z 155.00 503.50 944.50 1040.00 5207.67
2001 1240.50 0.00 z 657.50 516.00 159.50 6.50 14.00 1.00 0.00 z 606.50 795.00 a 0.00 z 3996.50
2002 1169.00 863.50 0.00 z 0.00 z 166.37 a 101.00 0.00 z 0.00 z 0.00 z 576.50 850.00 912.00 4638.37
2003 907.00 802.00 706.50 567.50 0.00 z 17.50 0.00 1.50 159.00 294.00 918.00 966.50 5339.50
2004 1197.50 694.50 h 613.00 461.50 270.00 91.50 1.00 33.50 166.50 438.00 812.50 988.00 5073.00
2005 1068.50 845.50 680.00 536.00 266.00 156.00 5.50 21.50 207.50 498.00 884.00 1201.00 6369.50
2006 969.00 904.50 813.00 500.50 293.50 46.50 1.00 18.00 171.50 525.00 725.00 1118.00 6085.50
2007 1212.00 799.50 641.00 489.50 224.50 76.50 0.00 28.00 183.00 565.00 855.50 1049.00 6123.50
2008 1202.50 899.50 855.50 651.00 287.50 146.00 2.00 27.50 170.00 516.00 759.50 1131.50 6648.50
2009 1187.50 927.00 826.00 543.50 324.50 97.00 11.50 26.50 87.50 655.50 854.50 1240.50 6781.50
2010 952.50 798.50 751.00 592.00 465.50 147.50 29.00 39.50 131.00 392.50 849.00 1060.00 6208.00
2011 1148.55 a 930.00 780.68 a 689.48 a 442.50 168.00 11.00 3.00 64.50 496.00 0.00 z 0.00 z 4733.72
Period of Record Statistics
MEAN 1118.15 845.48 712.14 468.60 255.40 87.90 16.06 19.80 140.22 450.22 790.58 1050.26 6010.97
S.D. 171.44 130.52 110.53 105.72 85.57 49.26 48.61 25.20 72.54 108.19 91.37 121.88 427.79
SKEW 0.99 0.57 0.33 -0.56 0.14 0.45 7.55 2.58 0.35 -0.23 -0.20 0.28 0.29
MAX 1733.50 1349.50 1029.50 689.48 465.50 243.00 428.00 141.50 310.00 655.50 1048.50 1391.00 6884.50
MIN 881.00 579.50 425.00 109.00 40.50 2.00 0.00 0.00 1.50 213.00 533.50 766.22 5160.07
NO YRS 75 79 84 75 81 80 83 80 78 77 78 75 34