WALLA WALLA FAA AIRPORT, WASHINGTON

Monthly Total Growing Degree Days

(458928)

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
1949 0.00 z 0.00 z 0.00 z 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 56.50
1950 7.00 57.00 126.00 297.50 551.00 747.00 1069.00 1064.00 786.00 405.50 118.50 91.00 5319.50
1951 40.00 52.00 114.18 a 398.50 604.00 778.50 1092.00 1004.00 769.50 373.50 109.50 22.00 5357.68
1952 11.50 79.00 148.00 451.50 633.00 744.00 1094.50 1039.50 838.00 578.50 53.00 49.00 5719.50
1953 210.50 77.00 189.00 312.50 513.50 628.50 1052.00 1000.50 824.50 476.00 162.00 75.00 5521.00
1954 53.50 98.00 90.00 309.50 608.00 652.50 1000.00 888.50 679.00 338.00 237.00 33.00 4987.00
1955 6.00 19.50 67.00 196.50 453.00 812.00 956.00 1019.50 738.00 419.02 a 94.00 57.50 4838.02
1956 40.50 16.00 156.50 433.00 667.00 701.50 1135.50 997.00 767.50 360.00 62.50 102.50 5439.50
1957 0.00 65.50 129.50 391.00 673.50 819.00 993.00 929.50 814.50 291.00 82.50 92.50 5281.50
1958 91.50 185.50 128.00 301.50 783.50 898.50 1174.50 1173.50 712.50 473.50 184.50 66.00 6173.00
1959 94.00 32.00 178.00 372.50 491.50 799.50 1102.00 946.02 a 649.00 427.00 118.50 31.50 5241.52
1960 29.00 67.00 239.00 369.50 509.50 806.00 1220.50 925.00 767.50 466.00 133.00 4.50 5536.50
1961 103.00 161.50 228.50 327.00 568.50 966.50 1175.00 1191.50 630.50 353.50 30.00 71.00 5806.50
1962 69.50 77.50 123.50 432.50 451.00 772.50 1045.00 937.00 753.50 409.50 171.00 73.50 5316.00
1963 26.50 100.50 210.50 289.50 615.00 787.00 943.00 1058.50 901.00 549.00 177.50 18.08 a 5676.08
1964 68.50 79.00 164.50 291.00 544.00 774.00 1033.50 913.50 642.00 334.00 81.00 56.50 4981.50
1965 48.50 114.50 174.00 461.50 575.00 817.00 1131.00 1064.00 677.50 588.00 211.50 73.00 5935.50
1966 80.00 52.50 220.00 379.00 650.50 739.00 993.00 1024.50 838.00 426.00 154.50 91.50 5648.50
1967 111.50 103.00 150.50 208.50 556.50 892.50 1151.00 1243.00 922.00 489.00 109.00 92.50 6029.00
1968 72.50 159.00 281.00 276.00 581.50 796.00 1160.00 952.00 754.50 412.50 127.00 44.50 5616.50
1969 4.00 8.50 203.00 358.50 691.50 927.50 1046.50 1002.00 801.00 330.50 168.50 52.50 5594.00
1970 28.00 67.00 182.00 231.50 623.00 932.00 1153.50 1115.00 602.50 341.00 134.00 49.00 5458.50
1971 139.00 81.50 111.50 287.50 596.50 635.00 1089.50 1179.50 570.50 361.50 121.50 51.50 5225.00
1972 49.50 86.00 261.00 248.00 649.00 832.00 1048.50 1117.50 667.00 402.00 117.00 105.50 5583.00
1973 63.00 69.00 237.50 382.50 713.50 854.50 1152.00 1052.00 745.50 436.00 112.50 102.50 5920.50
1974 123.50 95.00 192.50 333.50 503.50 935.00 1043.50 1144.00 889.50 492.50 181.50 100.00 6034.00
1975 52.00 65.00 144.50 274.00 629.00 794.00 1216.00 953.00 836.50 466.50 196.00 109.00 5735.50
1976 70.50 82.00 133.00 289.50 564.50 689.00 1080.50 940.00 870.00 451.00 160.00 50.50 5380.50
1977 7.00 155.50 163.50 517.00 524.50 972.50 1046.50 1220.50 686.50 439.00 170.00 89.00 5991.50
1978 6.50 53.00 257.00 264.50 473.50 833.50 1079.50 1010.00 724.00 469.50 82.50 36.50 5290.00
1979 0.00 123.50 274.00 394.50 689.00 870.50 1123.00 1050.50 850.50 548.50 58.00 87.00 6069.00
1980 22.50 64.00 137.50 480.00 600.50 682.00 1060.00 930.00 765.50 416.00 167.00 148.50 5473.50
1981 36.50 104.50 240.50 392.50 575.00 744.00 1050.50 1237.50 867.50 468.00 191.00 64.00 5971.50
1982 68.50 148.00 206.50 292.50 589.50 926.00 1074.50 1102.00 741.00 420.00 95.00 79.50 5743.00
1983 159.00 196.50 301.00 378.00 684.50 764.50 973.00 1133.50 641.00 438.50 251.50 11.00 5932.00
1984 67.00 85.00 287.00 340.50 560.50 789.50 1195.50 1118.00 657.00 366.50 144.50 2.50 5613.50
1985 0.00 48.00 170.00 483.50 699.00 868.00 1311.50 990.00 594.50 401.50 78.00 0.00 5644.00
1986 31.00 101.50 295.50 328.00 600.50 936.50 930.00 1208.00 620.00 484.50 137.50 3.00 5676.00
1987 26.50 57.00 266.50 508.50 694.00 913.50 978.50 1035.00 857.00 475.00 138.00 75.50 6025.00
1988 24.00 118.00 174.50 417.50 601.00 794.50 1092.50 1043.50 756.50 610.00 168.00 20.00 5820.00
1989 54.50 2.00 138.50 417.50 552.50 841.50 1031.50 965.00 785.00 427.00 194.00 38.50 5447.50
1990 78.50 63.50 232.00 495.00 552.00 803.50 1175.50 1087.50 945.00 391.00 205.00 23.00 6051.50
1991 35.50 163.50 129.00 334.00 484.50 649.00 1042.00 1140.50 819.00 451.50 114.00 64.50 5427.00
1992 103.50 109.50 322.00 456.00 749.50 988.50 1055.00 1086.00 696.00 472.00 90.50 24.50 6153.00
1993 22.73 a 11.50 173.50 343.50 693.00 738.50 859.50 958.50 796.00 495.00 61.50 69.00 5222.23
1994 105.50 79.50 283.00 507.50 736.50 851.00 1235.50 1123.50 915.00 445.00 103.00 109.50 6494.50
1995 77.00 144.00 f 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 77.00
1996 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1997 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1999 0.00 z 0.00 z 177.50 291.72 a 484.50 755.00 1007.50 a 1087.00 722.00 376.65 a 194.46 b 68.00 5164.34
2000 21.50 55.00 157.07 a 455.00 604.50 803.50 1065.37 a 1048.50 686.50 358.50 37.50 0.00 a 5292.93
2001 6.50 14.50 185.50 275.00 633.00 709.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1824.00
2002 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2003 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2004 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2005 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2006 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2007 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2008 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2009 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2010 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2011 108.50 73.00 213.50 133.00 k 496.00 719.50 980.38 c 1108.52 b 895.00 454.50 119.50 37.00 5205.39
2012 57.87 a 42.50 181.00 407.07 a 566.50 706.50 1094.50 1120.00 818.50 447.00 213.50 123.00 5777.94
2013 40.00 84.50 271.50 39.50 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 396.00
Period of Record Statistics
MEAN 55.94 82.07 192.55 360.87 596.88 803.83 1077.80 1054.64 760.95 434.81 135.13 59.91 5627.04
S.D. 44.80 45.36 60.79 83.39 80.16 91.74 87.27 92.67 95.27 68.78 52.88 35.45 349.53
SKEW 1.09 0.55 0.25 0.13 0.19 0.11 0.17 0.21 -0.05 0.41 0.06 0.11 0.03
MAX 210.50 196.50 322.00 517.00 783.50 988.50 1311.50 1243.00 945.00 610.00 251.50 148.50 6494.50
MIN 0.00 2.00 67.00 196.50 451.00 628.50 859.50 888.50 570.50 291.00 30.00 0.00 4838.02
NO YRS 51 50 51 49 50 50 49 49 49 49 49 50 47