THE DALLES, OREGON

Monthly Total Heating Degree Days

(358407)

Base Temperature = 65 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 8.00 1.03 a 144.83 a 440.64 c 698.28 a 968.50 2261.28
1949 1299.50 805.50 583.50 246.50 113.50 42.00 0.50 4.65 a 49.14 a 450.50 512.00 772.00 4879.29
1950 1344.00 949.00 633.50 408.50 211.83 a 64.00 6.50 2.58 a 44.50 366.00 606.50 748.00 5384.92
1951 875.00 719.50 658.00 253.00 158.00 31.03 a 3.50 18.50 37.00 338.00 669.50 923.50 4684.53
1952 1120.50 743.00 606.50 310.50 143.50 76.50 6.00 11.00 26.90 a 147.50 800.69 a 853.00 4845.59
1953 613.50 581.00 528.50 391.00 230.00 108.50 1.50 12.50 51.21 a 256.50 546.50 696.00 4016.71
1954 967.00 687.50 641.00 355.50 165.00 101.50 21.50 15.50 a 58.50 385.00 477.00 882.50 4757.50
1955 844.50 687.50 709.00 495.50 211.83 a 52.00 28.50 3.50 88.00 299.00 821.50 913.50 5154.33
1956 908.50 952.86 a 584.50 276.50 93.50 49.00 0.50 6.50 37.00 336.50 674.00 791.50 4710.86
1957 1319.50 741.00 598.00 303.50 53.00 16.50 1.00 1.00 19.00 361.50 637.00 737.50 4788.50
1958 781.00 509.50 584.00 338.50 51.50 3.00 3.50 0.00 56.00 243.50 608.50 768.00 3947.00
1959 849.50 665.00 536.00 298.00 223.50 22.00 4.50 1.50 72.00 259.50 694.00 820.00 4445.50
1960 1092.00 686.50 600.00 341.50 227.50 35.00 3.00 22.50 38.00 246.00 605.50 920.50 4818.00
1961 823.00 538.00 497.00 344.50 169.47 a 19.50 1.50 0.00 85.00 340.00 750.50 806.50 4374.97
1962 891.50 673.00 646.00 253.50 260.50 68.00 13.50 1.50 41.50 282.00 525.00 753.30 a 4409.30
1963 983.22 a 631.50 528.50 394.00 162.75 a 50.00 9.00 4.50 16.00 245.50 543.50 892.50 4460.97
1964 737.00 588.50 580.50 381.50 228.00 61.50 5.00 19.50 65.00 291.00 679.00 959.00 4595.50
1965 827.00 562.50 560.00 273.50 189.00 38.00 6.00 10.00 74.00 200.00 524.50 828.50 4093.00
1966 830.50 614.50 556.50 277.00 143.00 77.00 15.50 2.07 a 28.00 306.00 536.00 751.00 4137.07
1967 658.50 544.50 592.00 448.50 140.50 9.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2393.00
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 740.50 604.00 456.00 184.00 57.93 a 1.00 23.00 47.50 382.50 702.41 a 796.00 3994.84
1976 842.50 706.36 a 623.10 a 394.00 161.00 89.00 11.22 b 24.50 40.00 348.75 c 613.00 856.00 4709.43
1977 1045.00 600.00 546.50 231.50 229.50 10.86 a 10.69 b 5.50 95.17 a 316.09 c 706.50 745.07 b 4542.38
1978 897.50 640.00 459.50 343.00 190.65 a 22.50 6.50 15.50 90.00 276.42 a 799.00 900.66 c 4641.23
1979 1380.00 761.00 500.00 291.50 83.50 13.00 7.50 3.32 c 4.00 202.00 697.24 a 726.00 4669.06
1980 1096.50 806.50 561.50 301.03 a 120.38 a 51.21 a 4.00 8.78 a 41.50 307.93 a 567.00 805.45 c 4671.79
1981 715.50 660.59 a 491.19 b 325.86 a 120.79 b 61.55 a 14.50 0.00 a 88.45 a 350.50 568.00 773.00 4169.94
1982 817.00 705.00 565.50 429.50 132.50 27.00 10.00 1.50 69.00 363.50 724.00 830.50 4675.00
1983 767.50 630.00 449.00 340.00 139.00 35.50 7.50 1.50 94.50 347.00 507.50 1122.50 4441.50
1984 882.50 663.50 464.00 369.50 223.50 77.00 0.00 0.00 93.50 392.50 652.00 931.00 4749.00
1985 1006.50 787.00 577.00 278.00 162.50 43.00 0.00 12.00 151.00 365.00 941.50 1232.50 5556.00
1986 888.50 681.50 443.00 397.50 212.50 17.50 17.57 a 0.00 142.50 294.00 595.00 932.50 4622.07
1987 973.50 640.50 537.50 259.00 102.00 30.50 5.50 1.00 35.00 229.00 557.50 849.40 a 4220.40
1988 921.73 a 646.50 520.00 294.50 194.00 72.50 7.00 1.00 64.50 139.50 536.50 821.50 4219.23
1989 746.00 957.00 630.50 244.50 152.50 26.50 5.50 0.00 20.50 297.50 509.50 838.50 4428.50
1990 717.50 694.50 489.00 216.50 192.00 48.50 3.50 0.00 2.50 363.00 522.00 1080.50 4329.50
1991 0.00 z 558.50 611.00 354.00 210.00 79.00 0.00 0.00 18.50 301.00 606.50 752.50 3491.00
1992 744.50 570.50 407.50 275.50 83.50 10.00 0.00 5.50 77.50 260.00 594.00 929.50 3958.00
1993 1152.00 867.50 664.50 364.00 89.00 53.50 7.00 10.00 61.00 240.50 829.00 838.50 5176.50
1994 726.00 788.00 511.00 264.50 114.50 63.50 3.00 0.00 10.50 320.50 702.50 819.00 4323.00
1995 931.50 605.00 563.50 374.00 119.50 0.00 z 0.00 10.00 28.50 333.50 509.00 834.00 4308.50
1996 859.00 895.00 572.00 335.00 230.50 0.00 z 14.50 3.00 92.00 329.00 668.00 908.00 4906.00
1997 922.50 651.50 564.50 382.00 115.00 46.00 5.50 0.00 35.50 341.00 606.50 802.50 4472.50
1998 885.50 595.00 517.50 347.00 0.00 z 0.00 z 0.00 z 0.00 z 21.50 359.00 555.50 873.00 4154.00
1999 751.50 0.00 z 0.00 z 447.93 a 298.50 104.50 44.00 7.23 a 95.17 a 410.00 561.50 778.10 a 3498.44
2000 927.50 746.00 633.43 a 346.00 201.50 57.41 a 22.50 17.64 b 132.00 0.00 z 0.00 z 917.50 4001.49
2001 899.50 745.50 576.00 466.50 0.00 z 0.00 z 5.50 0.00 z 46.03 a 360.00 626.00 818.00 4543.03
2002 800.00 676.00 673.22 a 398.00 209.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2756.22
2003 730.50 0.00 z 503.50 414.50 0.00 z 31.00 5.50 0.00 56.50 245.50 0.00 z 0.00 z 1987.00
2004 0.00 z 643.00 0.00 z 0.00 z 160.00 73.00 7.00 4.50 0.00 z 0.00 z 0.00 z 787.50 1675.00
2005 890.50 0.00 z 509.50 403.50 156.00 0.00 z 3.00 9.50 0.00 z 323.50 0.00 z 0.00 z 2295.50
2006 734.50 751.00 620.53 b 362.59 a 179.00 17.07 a 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2664.69
Period of Record Statistics
MEAN 904.54 693.61 563.51 341.96 165.46 47.62 7.52 6.45 59.27 310.50 630.37 852.86 4569.69
S.D. 176.80 107.97 65.62 67.64 54.68 27.17 8.27 7.15 36.77 67.77 103.14 103.67 370.12
SKEW 1.07 0.76 -0.17 0.17 -0.05 0.38 2.29 1.06 0.75 -0.42 0.85 1.49 0.55
MAX 1380.00 957.00 709.00 495.50 298.50 108.50 44.00 24.50 151.00 450.50 941.50 1232.50 5556.00
MIN 613.50 509.50 407.50 216.50 51.50 3.00 0.00 0.00 2.50 139.50 477.00 696.00 3947.00
NO YRS 48 48 49 50 48 45 49 47 47 47 45 47 37