RIMROCK TIETON DAM, WASHINGTON

Monthly Total Heating Degree Days

(457038)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197709
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
1947 1208.50 887.00 753.50 590.50 313.00 327.00 147.50 181.00 259.50 644.00 873.00 1057.50 7242.00
1948 1236.50 1129.50 1031.00 806.50 544.50 197.50 217.52 a 208.50 362.00 660.50 896.00 1297.00 8587.02
1949 1602.50 1075.00 898.50 578.50 354.50 285.50 148.50 138.50 334.00 631.00 694.50 1083.50 7824.50
1950 1648.50 1059.00 989.00 762.00 526.00 285.00 110.50 97.50 239.00 664.50 894.00 958.50 8233.50
1951 1215.00 996.00 1022.00 598.00 466.50 210.00 91.50 124.50 239.00 603.00 941.00 1237.00 7743.50
1952 1409.50 998.00 953.25 a 599.50 445.00 288.50 95.50 115.00 187.00 389.00 994.50 1124.00 7598.75
1953 894.50 852.50 852.50 715.00 529.50 406.00 108.00 136.00 260.00 527.50 784.00 933.00 6998.50
1954 1219.00 907.50 1026.00 713.50 450.00 365.50 164.00 215.50 324.50 677.00 733.50 1130.50 7926.50
1955 1120.00 964.00 1094.00 821.50 572.50 264.50 224.50 141.00 304.50 597.00 1112.07 a 1250.50 8466.07
1956 1210.50 1210.00 1033.00 641.00 391.50 359.50 93.50 146.50 283.50 658.00 938.00 1019.00 7984.00
1957 1484.00 1004.50 912.00 616.00 329.00 203.00 141.50 190.50 172.50 682.50 879.50 966.50 7581.50
1958 1043.50 770.50 926.00 705.00 266.50 180.00 42.50 42.50 302.50 536.00 943.50 988.50 6747.00
1959 1143.00 970.00 888.50 640.50 572.50 263.50 111.00 170.50 357.00 563.00 901.00 1074.50 7655.00
1960 1260.00 996.00 964.00 675.00 558.50 228.00 58.00 178.00 277.50 553.50 913.50 1191.50 7853.50
1961 1106.00 833.50 864.00 690.00 536.00 155.00 91.00 48.00 424.00 671.50 1029.50 1131.50 7580.00
1962 1166.00 924.50 1002.00 592.00 632.50 257.14 b 180.00 182.50 276.50 592.00 847.00 1007.50 a 7659.64
1963 1230.50 766.50 850.50 754.50 506.50 305.00 214.50 145.50 173.00 557.00 869.50 1166.00 7539.00
1964 1065.00 922.00 938.50 722.00 546.50 326.00 123.50 226.50 379.50 608.50 940.50 1258.50 8057.00
1965 1123.50 842.00 899.00 616.00 523.50 260.00 119.00 144.50 395.50 500.50 794.00 1152.50 7370.00
1966 1170.50 984.00 944.50 629.50 435.50 333.00 152.00 125.00 201.00 603.00 834.00 1020.50 7432.50
1967 968.00 823.50 920.50 651.50 f 487.00 195.00 56.50 45.50 133.00 599.50 868.50 1118.50 6215.50
1968 1162.00 883.00 783.00 720.50 470.00 270.00 100.00 200.00 266.50 715.50 895.00 1301.50 7767.00
1969 1515.00 1108.00 926.00 681.50 370.50 131.50 140.50 158.50 295.00 695.50 839.50 1150.50 8012.00
1970 1255.00 610.00 h 908.50 798.00 478.50 185.50 82.50 76.00 404.50 697.50 a 899.50 1205.50 6991.00
1971 1073.50 878.00 1049.50 747.50 441.50 384.00 148.00 47.00 456.00 680.50 897.50 1134.00 7937.00
1972 1184.50 1037.50 875.00 784.00 423.00 253.00 131.50 103.50 446.50 638.50 869.00 1286.00 8032.00
1973 1232.00 935.00 860.50 665.00 436.50 280.00 104.50 154.00 299.00 642.50 1038.00 1030.50 7677.50
1974 1307.50 885.00 961.50 741.00 594.00 205.00 155.50 125.00 235.50 582.50 834.00 1025.00 7651.50
1975 1150.50 1064.50 996.00 824.00 513.00 319.00 91.00 201.00 290.50 692.00 955.00 1035.00 8131.50
1976 1061.50 1006.41 b 1011.78 b 743.00 502.41 b 409.50 146.50 214.00 233.00 621.00 843.50 1034.50 7827.10
1977 1284.00 912.43 e 930.00 596.00 646.00 183.50 76.00 o 61.50 m 203.50 o 0.00 z 0.00 z 0.00 z 4551.93
Period of Record Statistics
MEAN 1217.74 954.18 937.55 692.23 479.43 268.25 126.35 142.73 293.72 616.13 891.74 1112.30 7754.11
S.D. 169.51 106.08 77.99 76.20 91.37 73.84 45.52 53.69 83.04 70.56 86.04 106.75 394.83
SKEW 0.84 0.30 -0.24 0.12 -0.40 0.18 0.41 -0.42 0.20 -1.14 0.20 0.23 -0.31
MAX 1648.50 1210.00 1094.00 824.00 646.00 409.50 224.50 226.50 456.00 715.50 1112.07 1301.50 8587.02
MIN 894.50 766.50 753.50 578.50 266.50 131.50 42.50 42.50 133.00 389.00 694.50 933.00 6747.00
NO YRS 31 30 31 30 31 31 30 30 30 30 30 30 28