RICHLAND, WASHINGTON

Monthly Total Growing Degree Days

(457015)

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
1944 0.00 z 0.00 z 0.00 z 0.00 z 319.00 r 829.00 1136.50 1012.50 812.50 522.50 113.04 b 0.00 j 4426.04
1945 68.00 88.00 201.00 404.50 757.00 886.03 a 1217.50 1161.00 754.00 545.50 179.00 55.50 6317.03
1946 16.53 a 81.50 283.00 480.50 808.50 879.50 1187.00 832.00 h 784.50 399.90 a 102.50 110.00 5133.43
1947 71.00 108.00 355.50 522.50 934.50 816.50 1127.00 1045.00 851.50 527.50 155.00 28.50 6542.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 991.00 979.50 1009.50 822.60 e 204.50 l 115.00 27.00 3944.60
1949 0.00 31.00 188.00 489.50 828.50 873.00 1096.50 1069.50 a 838.50 335.50 195.00 a 65.50 6010.50
1950 3.50 52.50 147.50 330.50 610.00 833.00 1100.00 1137.00 844.00 396.50 112.24 a 58.00 5624.74
1951 48.05 a 53.50 107.50 452.00 704.00 892.00 1197.12 a 1083.00 825.00 469.50 108.00 44.50 5984.17
1952 6.00 76.00 224.50 526.50 779.00 884.50 1184.50 1097.50 898.00 623.50 56.50 42.50 6399.00
1953 221.50 137.00 301.50 421.00 664.00 758.00 1135.00 1088.50 880.50 550.00 217.50 126.50 6501.00
1954 61.00 144.50 153.00 414.50 729.00 804.00 1084.00 1004.00 755.00 364.00 260.50 41.50 5815.00
1955 10.00 41.50 127.00 307.50 596.50 940.50 1040.00 1096.00 822.50 511.00 115.50 30.00 5638.00
1956 41.00 39.00 213.00 524.50 805.00 825.50 1193.00 1073.12 a 835.50 440.50 86.50 102.00 6178.62
1957 0.50 83.00 195.00 478.00 807.50 955.00 1090.50 1032.50 895.00 397.50 111.50 129.00 6175.00
1958 98.50 214.00 185.00 422.00 934.00 1060.00 1301.00 1261.50 838.00 501.00 251.00 46.50 7112.50
1959 67.00 62.00 246.50 463.00 608.00 864.50 1109.00 977.50 727.00 480.00 149.50 43.50 5797.50
1960 5.00 83.00 279.00 434.00 614.00 880.00 1233.00 979.00 772.00 514.50 178.00 7.50 5979.00
1961 74.50 221.00 290.00 453.00 688.50 1045.00 1184.50 1227.00 716.50 430.00 50.69 a 76.00 6456.69
1962 65.50 83.50 177.00 520.50 605.50 863.50 1086.00 1012.50 828.00 462.50 227.00 71.00 6002.50
1963 33.50 100.00 253.50 400.00 718.50 890.50 996.00 1078.00 922.50 564.00 245.00 7.50 6209.00
1964 60.00 57.50 173.00 371.50 616.50 838.00 1078.00 927.50 723.00 443.00 86.50 40.00 5414.50
1965 47.00 127.50 159.50 485.00 633.00 842.00 1075.00 1057.00 711.00 582.00 235.50 54.50 6009.00
1966 51.50 87.00 247.00 475.50 727.00 809.00 1010.50 1042.50 856.00 463.50 202.50 98.50 6070.50
1967 154.50 175.50 229.50 310.50 658.50 927.50 1109.00 1178.00 913.50 532.50 162.00 84.50 6435.50
1968 84.00 184.50 311.50 377.50 701.00 876.00 1142.00 954.00 789.50 402.00 128.00 49.50 5999.50
1969 4.00 4.50 222.00 419.50 756.50 1001.50 1025.50 924.50 751.50 299.50 123.00 21.50 5553.50
1970 12.00 57.50 172.00 280.00 636.00 940.50 1103.50 1010.00 616.00 328.00 97.50 25.50 5278.50
1971 116.50 91.50 110.50 352.00 695.00 717.50 1066.00 1142.50 597.50 385.50 107.50 21.00 5403.00
1972 79.00 103.00 246.50 309.50 702.50 865.00 1036.00 1074.00 634.50 376.00 86.00 115.00 5627.00
1973 20.00 41.50 232.50 402.00 684.50 832.50 1068.50 989.00 743.50 434.50 117.50 84.50 5650.50
1974 103.50 112.50 225.50 414.50 601.50 953.00 1053.50 1083.00 839.00 423.00 159.50 56.00 6024.50
1975 32.00 24.50 145.00 274.00 623.00 801.50 1174.50 970.50 787.50 453.00 150.52 a 56.50 5492.52
1976 35.00 86.50 175.50 353.50 656.50 764.00 1038.50 974.50 865.00 417.50 127.00 21.50 5515.00
1977 6.50 137.00 234.00 532.76 a 594.50 996.50 1066.00 1211.50 690.00 409.50 179.00 90.50 6147.76
1978 13.00 63.00 314.00 416.00 616.00 915.00 1102.05 a 1028.00 730.50 393.00 65.50 10.00 5666.05
1979 0.00 60.50 249.00 389.00 723.50 895.50 1128.50 1089.00 856.50 548.00 52.50 71.00 6063.00
1980 3.50 25.00 210.00 483.00 683.50 771.50 1083.50 961.50 0.00 z 431.00 157.50 89.00 4899.00
1981 36.50 123.00 292.50 419.00 663.50 778.50 1032.50 1154.00 782.50 385.00 160.00 49.50 5876.50
1982 53.50 118.74 a 210.00 337.50 621.50 903.50 1022.00 1039.00 714.00 362.50 69.00 42.00 5493.24
1983 83.50 123.50 319.50 377.50 718.50 811.00 1001.00 1126.00 615.00 368.50 195.00 1.00 5740.00
1984 50.50 63.50 265.50 328.00 527.00 753.50 1090.00 1052.00 656.38 a 344.50 115.86 a 6.41 b 5253.16
1985 0.00 44.00 186.50 500.17 a 748.00 909.50 1245.00 995.00 639.00 442.50 109.50 0.00 5819.17
1986 26.00 122.50 339.50 372.93 a 681.00 998.50 942.40 a 1148.50 677.50 460.50 170.00 4.28 b 5943.61
1987 21.50 62.50 282.50 523.50 768.50 909.50 450.00 r 990.50 823.00 409.50 181.50 55.00 5027.50
1988 16.50 106.50 195.00 437.50 646.50 804.50 1035.00 983.50 707.50 547.50 170.00 18.50 5668.50
1989 78.50 5.00 197.50 486.50 617.00 888.00 1003.00 948.50 744.00 409.50 177.00 13.50 5568.00
1990 80.00 59.50 208.00 493.00 585.00 819.00 1114.00 1055.50 893.50 374.50 202.00 21.50 5905.50
1991 26.50 109.50 125.00 385.50 563.00 684.00 1045.50 1103.00 790.00 414.50 90.00 74.50 5411.00
1992 50.50 71.50 285.50 438.00 716.50 955.00 1030.00 1067.50 660.50 423.00 101.00 13.50 5812.50
1993 3.00 9.50 130.00 371.50 798.50 813.00 868.50 943.50 735.50 442.00 52.50 62.50 5230.00
1994 0.00 z 51.50 273.50 490.00 693.50 795.00 1133.50 0.00 z 0.00 z 419.00 50.00 71.00 3977.00
1995 19.50 158.50 0.00 z 0.00 z 713.50 0.00 z 1054.00 0.00 z 0.00 z 0.00 z 184.50 45.50 2175.50
1996 33.50 52.50 160.50 425.50 511.00 763.00 1077.50 995.50 690.00 405.50 83.00 9.50 5207.00
1997 25.50 73.50 207.50 332.50 693.00 770.00 992.50 1094.00 766.00 402.50 125.50 22.50 5505.00
1998 39.00 79.50 219.50 365.50 649.00 847.00 1200.00 1121.50 890.00 370.00 0.00 z 59.00 5840.00
1999 73.00 98.50 178.00 323.50 540.00 771.00 965.50 1068.00 687.00 376.00 202.50 84.50 5367.50
2000 18.00 28.50 164.00 451.50 649.50 817.50 1007.00 1020.50 704.50 357.00 40.50 0.00 5258.50
2001 3.50 17.50 188.07 a 340.00 704.50 742.50 1025.00 1080.00 0.00 z 418.50 130.50 26.00 4676.07
2002 48.50 60.50 152.00 402.00 571.50 871.00 1119.00 1006.00 749.00 357.00 154.50 55.50 5546.50
2003 63.00 64.00 318.50 398.50 642.00 886.00 1140.00 1071.50 813.50 546.00 92.00 1.50 6036.50
2004 27.00 29.00 326.50 443.50 644.50 871.50 1133.50 1090.50 725.50 464.50 73.50 42.50 5872.00
2005 10.50 20.50 239.50 412.50 706.00 804.00 1084.50 1057.00 711.00 466.50 73.00 14.00 5599.00
2006 77.00 49.50 183.00 374.50 657.50 850.50 1154.50 1006.00 746.00 390.50 169.00 20.50 5678.50
2007 29.50 58.50 269.00 367.50 658.50 804.00 1165.00 985.50 731.00 381.50 123.50 45.50 5619.00
2008 5.50 0.00 z 131.50 264.50 681.50 766.50 1055.50 1000.50 742.00 371.50 136.00 7.50 5162.50
2009 40.00 14.50 128.50 355.00 650.00 876.00 1126.50 1055.00 802.50 322.50 103.00 2.50 5476.00
2010 39.50 78.50 216.50 387.00 508.50 754.00 1046.00 1010.00 745.50 432.50 151.00 26.50 5395.50
2011 71.00 46.00 161.50 243.00 504.00 748.45 a 940.00 1059.50 830.69 a 449.00 70.00 33.00 5156.14
2012 31.50 43.00 188.50 416.38 a 592.00 725.50 1066.50 1063.50 766.50 402.00 158.79 a 60.50 5514.67
2013 27.00 42.52 a 219.00 18.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 288.52
Period of Record Statistics
MEAN 43.61 77.97 217.11 408.38 673.51 853.07 1087.55 1052.31 770.26 433.92 135.01 45.46 5797.39
S.D. 39.27 47.45 60.92 70.67 87.65 80.26 78.50 71.28 78.96 69.27 54.05 32.81 394.94
SKEW 1.79 0.94 0.29 -0.16 0.60 0.40 0.07 0.61 -0.11 0.60 0.32 0.63 0.74
MAX 221.50 221.00 355.50 532.76 934.50 1060.00 1301.00 1261.50 922.50 623.50 260.50 129.00 7112.50
MIN 0.00 4.50 107.50 243.00 504.00 684.00 868.50 924.50 597.50 299.50 40.50 0.00 5156.14
NO YRS 67 67 67 66 67 68 68 66 65 67 68 68 59