THE DALLES, OREGON

Monthly Total Growing Degree Days

(358407)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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 16.50 139.50 289.50 566.00 656.00 923.50 948.00 615.00 288.50 99.50 94.00 4636.00
1894 26.35 a 24.00 142.00 367.50 619.50 702.00 1014.00 1030.50 624.00 377.00 238.00 5.00 5169.85
1895 6.00 113.50 174.00 416.00 568.00 798.50 934.00 945.50 583.00 439.00 118.50 27.50 5123.50
1896 24.28 a 138.50 211.50 294.50 512.50 799.50 1139.50 949.50 677.00 435.50 93.00 26.00 5301.28
1897 36.00 55.50 89.00 481.00 755.50 776.50 911.50 1098.50 670.00 428.50 149.00 34.50 5485.50
1898 14.00 117.50 173.00 421.50 606.00 777.00 988.00 1066.50 706.00 357.00 91.00 22.00 5339.50
1899 81.50 97.00 147.50 342.00 482.50 710.50 995.00 775.53 b 766.50 353.50 217.00 54.50 5023.03
1900 61.50 81.00 345.00 417.00 642.50 837.93 a 977.00 825.50 628.50 354.00 114.00 118.00 5401.93
1901 18.00 59.77 b 171.10 e 320.00 633.00 656.00 885.10 b 1044.91 b 598.50 564.00 176.38 a 44.20 d 5170.97
1902 27.50 75.50 167.52 e 367.50 665.00 749.44 c 918.00 959.50 709.66 a 461.00 106.00 9.00 5215.62
1903 41.00 30.00 171.50 320.50 631.50 852.93 a 879.00 920.00 651.00 394.00 111.21 a 16.50 5019.14
1904 56.50 6.50 107.97 b 458.50 613.28 a 773.50 976.00 1007.00 743.28 a 442.50 183.50 56.50 5425.02
1905 9.50 66.00 328.50 456.50 608.50 793.00 1012.50 932.00 737.00 261.50 64.50 8.00 5277.50
1906 62.00 65.50 214.00 502.50 617.00 694.00 1199.50 994.00 720.50 467.07 a 175.00 49.50 5760.57
1907 2.00 61.50 140.50 363.00 714.50 778.00 1015.50 844.50 673.00 525.00 132.50 37.00 5287.00
1908 12.00 64.50 236.00 446.50 511.00 746.00 1086.50 960.50 711.50 414.88 a 162.50 5.50 5357.38
1909 5.17 a 68.96 a 238.50 356.00 561.00 808.00 889.50 888.48 c 741.50 425.73 a 144.00 0.00 5126.85
1910 10.50 14.00 357.50 446.50 709.50 735.50 1011.00 857.00 662.00 485.00 122.50 24.50 5435.50
1911 34.50 4.50 278.00 364.00 499.00 745.00 1036.00 910.50 563.28 a 344.00 156.50 46.00 4981.28
1912 0.00 a 72.50 138.50 395.00 652.50 833.00 990.00 904.00 0.00 z 0.00 z 0.00 z 0.00 z 3985.50
1913 0.00 z 0.00 z 44.00 u 430.50 649.50 864.00 1042.50 1096.88 a 0.00 z 424.50 168.21 b 7.75 c 4683.85
1914 39.78 a 66.89 a 316.00 477.69 d 653.50 763.00 1121.00 1104.50 634.50 376.50 107.22 c 0.00 5660.59
1915 2.00 62.00 315.00 542.59 a 599.00 824.48 a 990.00 1142.00 733.85 d 462.00 104.50 34.00 5811.42
1916 1.00 5.50 216.00 440.00 477.00 747.50 861.44 e 989.00 705.00 375.50 64.00 24.28 a 4906.23
1917 33.58 a 105.50 100.50 300.50 560.00 772.00 1068.47 a 1078.00 768.00 503.50 141.00 158.50 5589.55
1918 87.50 24.50 199.50 408.00 536.50 916.00 986.00 885.50 845.00 489.50 113.00 73.50 5564.50
1919 26.50 31.00 247.43 d 432.50 609.67 a 750.00 a 1134.82 c 991.50 608.50 394.50 114.00 0.00 5340.41
1920 46.50 41.50 225.00 318.50 542.00 755.50 1075.50 1043.00 668.00 430.00 93.50 32.00 5271.00
1921 51.50 82.00 272.50 383.89 c 657.20 a 852.00 979.00 1008.00 649.50 527.00 136.50 21.00 5620.09
1922 3.00 19.38 b 165.33 a 381.21 a 666.50 981.21 a 834.00 h 1023.55 c 705.00 d 316.00 k 71.25 b 23.80 c 4040.24
1923 58.12 c 26.25 d 307.50 504.00 718.50 877.50 1088.50 1143.50 838.50 475.00 206.50 31.00 a 6274.88
1924 37.50 177.22 b 227.50 477.86 b 840.00 898.50 1053.00 1012.50 715.50 456.50 129.00 92.00 6117.08
1925 52.18 a 164.00 259.00 484.00 742.50 810.00 1141.50 985.00 764.50 457.77 a 106.00 78.50 6044.95
1926 31.52 a 209.00 344.74 b 590.50 655.00 949.00 1140.28 a 1042.78 b 620.00 503.50 152.50 22.50 f 6238.82
1927 18.08 a 81.00 185.50 388.50 541.00 831.50 1016.00 1030.00 698.33 c 461.50 238.50 59.50 5549.42
1928 11.50 14.50 262.50 332.00 786.00 780.50 1095.00 992.50 731.50 417.00 141.00 14.00 5578.00
1929 5.50 41.50 260.50 366.00 653.50 812.50 933.00 1055.50 676.00 496.00 115.50 46.50 5462.00
1930 3.00 102.50 290.50 470.00 551.00 730.50 1060.00 1053.50 778.00 340.00 120.00 13.00 5512.00
1931 44.00 59.00 181.50 370.50 718.50 739.66 a 1004.50 987.50 720.50 395.50 97.50 0.00 5318.66
1932 27.50 59.04 a 220.32 c 382.00 593.50 893.50 923.00 931.00 730.00 499.00 166.50 52.00 5477.36
1933 47.53 a 24.37 a 171.00 383.00 488.50 816.50 1017.50 1028.50 597.50 492.50 165.00 135.76 b 5367.66
1934 101.50 143.50 366.50 580.00 678.50 836.00 968.50 1018.50 691.00 477.50 189.00 59.42 a 6109.92
1935 1.50 70.56 c 98.00 343.00 606.00 812.00 1003.50 945.50 833.50 386.50 49.00 23.77 a 5172.83
1936 58.79 b 33.46 c 189.00 508.50 733.31 b 864.50 990.00 986.00 704.50 473.00 24.00 74.50 5639.56
1937 0.00 30.50 230.00 322.50 656.50 797.00 1015.50 905.50 761.00 538.00 179.00 68.00 5503.50
1938 19.00 34.00 143.00 428.50 619.50 870.00 1046.00 917.00 859.00 439.00 120.50 91.50 5587.00
1939 74.29 b 45.23 b 262.95 c 500.50 693.50 740.50 1071.50 1021.50 787.00 511.00 113.00 70.00 5890.97
1940 1.50 98.50 333.50 445.00 772.50 942.50 1022.00 1006.50 820.00 539.50 71.50 25.50 6078.50
1941 1.00 61.19 a 346.17 a 513.75 b 643.77 a 849.50 1211.00 1030.50 683.04 b 465.50 184.50 43.40 a 6033.30
1942 0.00 38.00 174.12 a 452.50 594.00 747.50 1088.00 1073.50 0.00 z 535.00 77.00 46.00 4825.62
1943 9.00 50.50 185.00 481.50 553.50 730.00 997.50 902.50 827.07 a 464.50 83.00 0.00 z 5284.07
1944 0.00 z 21.50 u 204.00 416.50 663.00 790.50 1089.00 1011.50 836.50 591.00 133.97 a 35.50 5771.47
1945 81.00 96.00 177.50 395.00 699.00 819.50 1138.50 1101.50 724.00 525.50 114.50 35.00 5907.00
1946 36.50 72.00 223.50 438.00 739.50 779.00 1054.50 1052.50 729.00 366.00 65.00 99.00 5654.50
1947 25.50 125.50 325.50 510.00 851.00 762.00 1005.00 961.00 788.00 471.00 207.00 37.00 6068.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 976.00 944.47 a 671.38 a 334.36 c 73.45 a 9.00 3008.65
1949 0.00 40.50 196.00 503.50 742.00 853.50 1020.50 1029.72 a 824.48 a 325.00 238.00 55.00 5828.20
1950 1.50 31.00 144.00 341.50 580.22 a 812.50 1030.50 1078.80 a 860.00 409.00 164.50 63.50 5517.02
1951 30.00 49.00 152.50 498.00 659.50 889.66 a 1075.00 1007.00 839.00 437.00 102.50 34.00 5773.16
1952 0.00 46.00 173.50 451.00 684.00 762.50 1080.50 1029.50 887.07 a 654.00 56.90 a 19.50 5844.47
1953 169.50 121.00 246.50 359.00 566.50 670.00 1039.00 997.00 838.45 a 518.50 203.50 98.00 5826.95
1954 17.50 76.00 144.00 394.50 664.00 709.00 926.50 889.70 a 762.50 390.00 274.00 15.00 5262.70
1955 21.00 57.00 109.50 254.50 575.05 a 830.50 922.00 1044.00 791.50 476.00 111.50 24.50 5217.05
1956 15.50 22.79 a 204.00 486.50 806.50 788.50 1128.50 1033.00 819.50 438.50 136.00 113.00 5992.29
1957 0.00 45.00 182.50 462.50 793.00 890.50 991.00 952.00 896.50 420.00 125.50 73.50 5832.00
1958 54.00 190.50 195.00 411.50 867.00 984.50 1218.50 1196.00 811.00 548.50 201.00 52.00 6729.50
1959 71.00 70.00 239.00 452.00 571.50 836.50 1118.50 1013.50 732.00 519.00 138.00 45.00 5806.00
1960 8.00 90.00 245.50 414.00 563.50 882.50 1170.00 969.50 804.50 543.00 158.00 12.50 5861.00
1961 46.00 162.50 278.00 406.50 628.78 a 991.50 1116.00 1194.50 707.50 437.00 47.50 65.00 6080.78
1962 80.50 94.00 155.50 499.50 515.50 792.50 1030.50 973.00 817.50 493.50 232.50 71.30 a 5755.80
1963 27.90 a 115.00 246.50 356.00 679.93 a 819.50 907.00 1053.00 937.50 537.50 212.50 10.00 5902.33
1964 62.00 138.50 197.00 368.50 570.50 764.50 1042.00 937.50 731.00 484.00 90.00 40.00 5425.50
1965 50.50 145.00 231.50 481.50 622.00 837.00 1102.50 1057.50 721.00 589.00 234.00 58.50 6130.00
1966 27.50 94.00 224.00 473.00 701.50 770.50 989.50 1048.32 a 864.00 469.50 214.00 68.00 5943.82
1967 129.50 155.50 184.00 301.50 679.00 954.50 1123.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3527.50
1968 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1969 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1970 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1972 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1973 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1974 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1975 0.00 z 52.00 171.00 294.50 621.50 784.66 a 1103.50 896.50 782.00 392.50 113.79 a 85.00 5296.95
1976 37.50 76.64 a 174.12 a 356.00 638.00 727.00 1002.69 b 919.00 801.00 435.11 c 183.00 29.50 5379.56
1977 8.50 130.00 228.50 537.00 548.50 950.17 a 1042.24 b 1202.50 708.62 a 458.91 c 145.50 123.47 b 6083.91
1978 20.00 79.00 326.00 407.00 606.57 a 911.00 1078.50 1006.00 695.00 498.58 a 74.50 48.71 c 5750.86
1979 0.00 67.00 277.00 463.50 766.50 908.50 1090.00 1005.84 c 871.50 585.50 94.66 a 92.50 6222.49
1980 2.00 28.50 223.50 457.76 a 684.07 a 769.14 a 1079.00 966.17 a 801.50 491.87 a 191.00 59.23 c 5753.73
1981 88.50 107.33 a 283.81 b 430.34 a 691.62 b 758.28 a 1014.50 1142.87 a 795.00 a 424.50 190.00 58.00 5984.75
1982 82.00 100.50 210.00 320.50 671.00 944.00 1024.50 1077.50 767.50 411.50 87.50 47.50 5744.00
1983 68.00 108.00 326.00 411.50 755.50 799.50 958.00 1061.00 688.50 428.00 243.00 10.50 5857.50
1984 60.00 78.00 311.00 380.50 568.50 771.00 1112.00 1039.50 736.00 384.00 109.00 15.00 5564.50
1985 0.00 57.50 199.00 472.00 659.50 857.00 1234.00 956.50 609.50 410.00 100.00 0.00 5555.00
1986 14.00 83.00 332.00 357.50 658.00 953.50 922.77 a 1172.00 670.50 482.00 173.00 4.50 5822.77
1987 4.50 70.00 237.50 507.50 756.50 935.00 1010.00 1067.50 875.00 555.50 205.50 60.97 a 6285.47
1988 8.27 a 139.00 255.00 457.00 611.00 804.00 1082.50 1002.00 797.00 679.50 214.50 46.00 6095.77
1989 76.00 20.00 183.00 509.50 654.00 883.50 969.00 994.50 820.50 480.50 241.00 51.50 5883.00
1990 86.00 85.00 286.00 543.50 592.00 829.50 1124.50 1079.50 939.50 415.50 228.00 25.00 6234.00
1991 39.50 152.00 168.00 396.00 565.00 717.50 1097.50 1131.00 863.00 498.00 150.00 74.00 5851.50
1992 65.50 157.50 367.50 481.00 781.00 1016.00 1085.00 1097.00 734.00 520.50 171.00 30.50 6506.50
1993 2.50 14.50 172.50 386.00 771.50 779.00 849.50 985.50 814.50 554.50 64.00 34.50 5428.50
1994 84.00 37.00 266.00 497.50 729.50 791.00 1159.50 1066.50 888.50 455.00 73.50 60.50 6108.50
1995 12.00 153.00 220.50 376.00 721.00 0.00 z 1077.50 931.00 868.50 443.00 252.00 49.00 5103.50
1996 54.00 39.50 214.50 422.50 551.00 0.00 z 1136.50 1041.50 711.50 460.00 121.50 14.50 4767.00
1997 27.50 89.00 213.00 368.00 734.50 763.50 985.50 1084.00 834.50 434.00 155.00 34.00 5722.50
1998 31.00 108.00 258.00 410.50 0.00 z 0.00 z 0.00 z 0.00 z 920.50 421.00 195.00 66.00 2410.00
1999 70.50 62.00 140.50 303.10 a 495.00 713.50 907.00 1036.95 a 695.17 a 367.50 188.50 55.28 a 5035.01
2000 6.00 20.50 143.12 a 405.50 584.00 792.93 a 934.50 934.81 b 673.00 0.00 z 0.00 z 0.50 4494.86
2001 3.00 22.50 204.50 286.50 0.00 z 0.00 z 952.50 0.00 z 806.90 a 415.50 147.50 28.50 2867.40
2002 30.00 65.50 118.32 a 352.00 573.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1138.82
2003 74.00 93.00 271.50 335.50 580.50 850.00 1090.00 1017.00 815.50 548.50 58.45 a 0.00 z 5733.95
2004 0.00 z 90.50 311.55 a 425.69 a 625.50 805.50 1072.00 1060.00 0.00 z 484.50 129.00 53.50 5057.74
2005 41.00 35.78 a 265.50 346.50 647.00 721.55 a 1023.50 1028.00 691.03 a 451.50 75.00 a 6.00 5332.36
2006 65.50 42.50 160.50 383.00 632.00 816.50 0.00 z 1003.92 e 764.00 438.50 126.50 30.00 4462.92
2007 31.50 59.50 271.50 337.50 627.00 774.00 1097.00 941.50 713.50 353.00 122.00 0.00 z 5328.00
2008 0.00 z 106.00 0.00 z 207.50 619.50 724.00 996.00 0.00 z 0.00 z 305.50 181.50 0.00 z 3140.00
2009 0.00 z 0.00 z 109.50 328.00 605.00 851.00 1099.50 1040.50 798.50 278.00 14.00 2.50 5126.50
2010 28.50 80.00 173.00 311.00 508.50 696.00 1005.50 979.50 724.50 459.50 146.50 14.00 5126.50
2011 83.70 a 52.77 b 114.38 b 221.90 a 484.24 b 702.41 a 909.00 988.90 a 806.90 a 451.50 70.00 16.02 a 4901.71
2012 10.50 60.69 b 136.83 b 364.66 a 574.05 c 688.97 a 1014.73 a 1040.50 765.00 b 405.58 a 185.00 56.00 5302.50
2013 17.05 a 65.33 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 82.38
Period of Record Statistics
MEAN 34.67 74.18 218.82 408.85 638.84 808.95 1032.66 1008.01 750.72 452.59 139.91 43.75 5625.39
S.D. 31.98 44.17 68.00 75.12 85.52 78.04 81.24 77.99 83.57 74.02 55.99 32.18 393.50
SKEW 1.18 0.74 0.31 -0.08 0.36 0.50 0.05 -0.04 0.04 0.10 0.20 0.95 0.10
MAX 169.50 209.00 367.50 590.50 867.00 1016.00 1234.00 1202.50 939.50 679.50 274.00 158.50 6729.50
MIN 0.00 4.50 89.00 207.50 477.00 656.00 849.50 775.53 563.28 261.50 14.00 0.00 4636.00
NO YRS 107 110 110 112 110 107 109 108 106 108 109 105 91