RIMROCK TIETON DAM, WASHINGTON

Monthly Total Heating Degree Days

(457038)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** 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
1917 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 14.50 h 58.38 a 250.71 b 143.50 t 726.43 b 843.50 1879.03
1918 923.50 957.50 865.50 579.81 d 521.50 158.57 b 107.35 d 163.50 217.00 535.50 885.00 1102.50 7017.23
1919 1092.50 986.00 871.50 630.50 473.50 329.00 81.00 114.00 364.00 720.50 895.50 1375.00 7933.00
1920 1054.00 972.50 865.00 716.50 514.50 308.50 54.00 132.00 356.00 665.00 915.00 1096.00 7649.00
1921 1191.50 907.00 818.50 720.52 a 485.84 b 285.54 b 190.00 168.00 498.00 589.50 906.00 1154.50 7914.90
1922 1353.15 a 1105.50 1016.00 741.21 a 505.62 b 142.76 a 58.00 88.41 d 218.28 a 541.00 988.00 1300.50 8058.42
1923 1103.50 1048.96 a 890.50 623.50 433.50 272.00 72.50 94.50 253.00 598.00 778.50 1088.50 7256.96
1924 1226.00 833.00 893.50 661.50 324.00 260.00 116.50 153.50 318.00 623.50 981.00 1288.50 7679.00
1925 1037.00 824.50 841.00 544.00 216.00 n 253.50 48.00 155.00 293.00 564.00 904.50 986.00 6450.50
1926 1141.00 846.50 711.50 475.00 494.00 203.00 107.93 d 103.00 451.50 567.19 d 641.50 f 1121.88 b 6222.49
1927 1243.74 b 966.00 a 922.00 386.50 l 575.05 a 126.50 m 79.00 f 116.50 376.50 594.50 775.50 0.00 z 5569.79
1928 1165.71 b 984.00 848.00 736.00 351.00 308.00 110.50 144.00 279.00 563.00 884.50 1194.00 7567.71
1929 1445.00 1237.00 850.00 790.50 488.00 319.50 149.50 89.00 332.00 528.00 857.00 969.00 8054.50
1930 0.00 z 0.00 z 0.00 z 558.50 510.00 343.50 119.00 86.50 264.50 668.00 916.50 1194.50 4661.00
1931 1139.50 970.50 889.00 644.00 392.50 288.50 90.93 a 157.00 338.00 626.00 990.50 1303.50 7829.93
1932 1270.50 1091.50 899.50 668.00 512.00 222.00 198.00 156.00 290.00 564.00 798.50 1225.50 7895.50
1933 1148.50 1143.50 979.50 691.50 626.00 313.00 110.50 124.00 432.00 512.50 752.50 947.00 7780.50
1934 928.50 791.50 672.50 396.00 377.50 256.00 128.00 74.00 343.50 581.50 815.50 1036.00 6400.50
1935 1194.50 904.00 1007.00 715.50 475.50 254.50 152.00 156.50 192.50 623.00 965.50 1118.00 7758.50
1936 1100.50 1405.98 a 932.50 587.00 349.50 226.00 104.00 93.50 286.00 450.00 900.00 978.00 7412.98
1937 1605.50 1047.00 861.50 651.50 441.50 246.50 72.50 175.50 244.50 485.50 780.50 996.50 7608.50
1938 1129.00 1035.50 937.50 556.50 399.00 181.00 54.00 137.50 143.50 580.00 973.00 1013.50 7140.00
1939 1007.00 1056.00 875.50 568.00 438.50 346.50 112.50 92.50 266.50 576.50 797.50 971.50 7108.50
1940 1161.50 926.50 749.00 646.00 366.83 a 150.50 76.00 68.00 215.50 525.50 1002.00 1081.00 6968.33
1941 1106.00 896.50 737.50 564.00 471.00 279.00 44.50 149.50 395.50 621.50 827.50 1116.00 7208.50
1942 1365.00 974.00 913.50 616.50 537.50 376.50 100.50 115.50 224.00 555.50 1023.00 1079.50 7881.00
1943 1434.50 943.50 991.00 606.50 550.00 377.59 a 108.50 180.00 211.50 574.50 872.00 1116.00 7965.59
1944 1215.50 1037.50 949.00 679.00 479.00 272.07 a 124.00 150.00 229.50 429.50 942.50 1261.70 a 7769.27
1945 1075.00 907.50 981.00 737.50 437.50 323.50 70.50 87.50 351.50 514.50 964.66 a 1172.00 7622.66
1946 1084.50 969.00 872.00 648.00 386.00 334.00 113.50 130.50 337.00 717.50 987.00 1024.00 7603.00
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 1198.17 972.31 910.25 664.14 470.83 270.28 114.91 133.26 296.40 596.26 890.81 1110.56 7664.13
S.D. 162.47 118.06 86.08 85.92 83.20 69.12 43.70 45.83 82.04 71.66 84.71 115.23 408.29
SKEW 0.87 0.95 -0.46 -0.38 -0.20 -0.06 0.57 -0.11 0.33 -0.45 -0.02 0.20 -0.64
MAX 1648.50 1405.98 1094.00 824.00 646.00 409.50 224.50 226.50 498.00 720.50 1112.07 1375.00 8587.02
MIN 894.50 766.50 672.50 396.00 266.50 131.50 42.50 42.50 133.00 389.00 694.50 843.50 6400.50
NO YRS 59 58 59 58 59 59 58 60 60 59 59 59 53