WALLA WALLA 13 ESE, OREGON

Monthly Total Heating Degree Days

(358985)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199011
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 0.00 z 97.50 306.50 640.15 a 949.82 b 1259.63 a 3253.60
1949 1586.88 b 1009.00 856.00 509.48 a 311.03 a 236.00 102.00 111.17 b 272.59 a 715.00 783.10 a 1076.22 a 7568.47
1950 1574.50 1006.50 924.50 0.00 z 542.00 259.66 a 45.00 44.50 257.00 522.35 a 832.50 865.42 a 6873.92
1951 1120.50 867.50 806.00 469.50 356.00 243.10 a 65.00 86.50 224.50 605.00 868.00 1158.50 6870.10
1952 1203.50 918.00 853.50 457.24 a 334.00 219.60 e 48.71 c 86.50 175.00 419.00 1021.00 1040.00 6776.06
1953 814.00 838.50 799.00 597.93 a 461.50 340.34 a 64.00 84.00 177.50 499.00 716.50 952.50 6344.78
1954 1098.43 a 862.00 887.50 587.50 333.80 c 303.50 63.50 161.00 289.00 587.00 716.00 1072.50 6961.74
1955 1095.33 a 923.46 b 989.50 710.00 463.97 a 175.86 a 133.30 a 64.07 a 282.50 525.97 a 1035.50 1107.00 7506.46
1956 1065.50 1103.50 855.60 a 494.50 307.50 236.90 a 33.00 72.00 207.93 a 579.50 981.72 a 1011.50 6949.15
1957 1482.83 a 927.00 806.00 558.50 300.00 171.50 64.00 139.00 192.00 612.50 920.50 919.00 7092.83
1958 1010.50 658.00 810.00 629.50 224.50 123.00 25.50 16.50 278.50 509.50 427.00 o 905.00 5190.50
1959 1017.50 890.50 790.50 539.00 466.00 181.50 70.50 135.00 315.50 543.50 933.50 1057.00 6940.00
1960 1213.50 914.00 789.50 527.50 426.00 175.00 29.00 152.00 233.50 528.50 832.00 1131.50 6952.00
1961 1029.00 728.50 759.00 577.00 378.50 85.00 21.00 14.50 348.50 592.50 962.00 1030.00 6525.50
1962 1104.00 852.50 829.50 469.00 479.50 216.50 122.00 121.00 241.00 559.00 775.50 941.50 6711.00
1963 1276.50 756.50 748.00 634.00 355.98 a 213.00 124.00 82.00 122.00 448.50 783.00 1079.00 6622.48
1964 990.00 899.50 856.50 641.50 442.78 a 220.00 82.00 149.50 301.50 548.00 888.50 1110.00 7129.78
1965 1023.00 820.50 852.00 513.00 419.00 180.00 60.00 85.50 360.50 420.00 725.50 1051.00 6510.00
1966 1023.00 891.00 810.50 540.50 330.50 240.50 89.00 81.00 151.00 549.00 759.00 896.50 6361.50
1967 905.00 772.50 812.50 708.50 383.00 131.50 21.50 14.98 a 101.11 c 503.75 a 831.00 1058.13 a 6243.48
1968 1010.50 776.27 a 654.00 630.00 a 383.00 179.00 44.43 a 145.00 259.50 607.50 823.45 a 1095.50 6608.15
1969 1360.90 a 910.50 826.15 a 563.57 b 285.72 a 86.00 56.50 56.66 b 177.50 644.05 b 857.68 b 1042.12 a 6867.34
1970 1082.50 787.63 a 809.50 732.86 b 364.00 108.10 a 36.17 a 34.21 b 369.64 b 594.17 a 812.50 1048.00 6779.27
1971 973.50 821.00 894.50 590.50 349.00 272.00 93.55 c 24.05 b 372.50 655.65 a 821.00 1064.50 6931.76
1972 1096.00 927.00 664.50 637.78 c 314.00 144.00 89.42 e 44.00 342.00 589.52 a 794.50 1192.00 6834.72
1973 1124.00 837.00 744.50 588.62 a 291.83 b 207.60 e 36.37 e 89.50 243.50 572.00 894.00 925.50 6554.41
1974 1217.50 805.00 765.50 584.46 b 453.00 118.50 73.00 56.00 120.00 k 517.18 a 764.50 946.50 6301.15
1975 1055.00 939.04 a 871.62 a 719.00 399.38 a 231.21 a 9.50 z 76.43 b 199.50 521.50 854.50 468.50 o 5867.18
1976 0.00 z 313.00 q 0.00 z 0.00 z 0.00 z 0.00 z 5.00 p 83.00 f 118.85 d 0.00 z 789.11 b 1042.50 1950.45
1977 1258.50 794.00 838.50 443.50 470.17 d 79.50 90.00 77.50 318.50 0.00 z 0.00 z 1036.12 e 5406.28
1978 1018.00 552.50 i 694.83 b 569.48 a 433.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 787.50 g 0.00 z 2715.31
1979 0.00 z 0.00 z 0.00 z 0.00 z 349.50 141.00 38.23 a 32.50 120.00 481.00 984.00 929.50 3075.73
1980 1234.00 887.50 804.50 447.00 395.00 214.66 a 56.50 139.50 257.50 490.00 828.00 522.00 o 5754.16
1981 791.50 k 802.31 b 480.00 h 606.00 0.00 z 0.00 z 0.00 z 38.75 c 235.00 591.50 760.00 964.00 3997.56
1982 1046.50 907.50 782.50 622.50 375.00 130.50 109.50 38.50 250.00 560.00 950.00 1049.00 6821.50
1983 904.50 726.50 660.50 572.50 336.50 197.00 103.00 15.00 291.50 523.79 b 0.00 z 0.00 z 4330.79
1984 170.50 y 884.00 726.00 602.50 457.00 256.50 54.00 43.00 301.00 646.00 829.50 1170.00 5969.50
1985 1301.00 986.00 867.00 500.00 330.00 163.50 6.00 107.50 392.00 604.00 1196.50 1375.88 a 7829.38
1986 970.50 861.50 624.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 523.50 858.00 1095.50 4933.50
1987 1155.50 842.00 720.00 380.50 290.50 129.50 77.50 83.00 146.00 487.50 772.50 1048.50 6133.00
1988 819.00 j 838.00 740.00 487.00 364.00 198.50 55.00 36.00 194.00 338.00 813.00 1057.50 5121.00
1989 1014.00 1161.00 769.12 b 455.50 380.50 116.50 50.00 96.00 206.00 542.50 776.00 1059.50 6626.62
1990 941.50 926.00 694.50 424.00 378.00 182.00 16.50 71.00 96.50 588.50 728.00 0.00 z 5046.50
Period of Record Statistics
MEAN 1118.85 873.30 794.56 561.09 377.30 187.05 63.48 77.56 243.22 549.64 851.83 1049.05 6816.72
S.D. 175.45 97.91 78.26 86.27 67.21 61.36 32.00 42.33 79.79 72.02 102.09 101.89 389.13
SKEW 1.07 0.61 -0.11 0.06 0.21 0.21 0.36 0.30 -0.08 -0.47 1.17 0.75 0.70
MAX 1586.88 1161.00 989.50 732.86 542.00 340.34 133.30 161.00 392.00 715.00 1196.50 1375.88 7829.38
MIN 814.00 658.00 624.50 380.50 224.50 79.50 6.00 14.50 96.50 338.00 716.00 865.42 6133.00
NO YRS 37 39 39 38 39 38 37 40 40 40 39 38 27