PRIEST RAPIDS DAM, WASHINGTON

Monthly Total Growing Degree Days

(456747)

Base Temperature = 40 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
1956 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 46.50 p 0.00
1957 0.00 j 47.50 i 107.50 j 359.50 i 620.00 j 694.00 i 824.00 h 770.00 i 564.00 l 396.44 e 62.00 k 25.00 l 396.44
1958 37.00 j 112.00 h 91.00 o 256.50 i 655.00 j 732.00 j 855.50 k 874.00 j 505.50 j 331.50 h 84.00 m 10.00 k 0.00
1959 4.50 k 8.50 i 185.40 e 336.00 h 364.50 m 579.50 k 906.50 h 663.00 k 451.50 k 327.00 i 91.50 l 31.50 k 185.40
1960 3.50 m 59.04 a 299.00 441.50 647.50 979.00 1348.50 1090.50 908.50 516.50 120.50 4.00 6414.54
1961 68.00 144.50 220.50 476.00 677.35 a 1087.50 1303.50 1336.50 814.50 450.50 57.50 44.50 6680.85
1962 45.50 54.50 192.00 546.50 646.00 938.50 0.00 z 1112.50 888.00 466.00 202.50 51.00 5143.00
1963 25.50 77.00 256.00 353.00 736.00 871.00 1070.50 1168.00 994.50 594.00 205.00 4.50 6355.00
1964 29.50 53.00 191.00 379.50 685.00 868.50 1137.50 1020.50 794.50 505.50 73.50 21.50 5759.50
1965 23.00 90.50 206.50 517.50 735.50 931.50 1188.50 1145.00 792.00 600.00 206.50 30.00 6466.50
1966 25.00 63.00 221.50 497.50 754.50 838.00 1105.00 1190.00 954.50 450.50 178.50 72.50 6350.50
1967 71.50 145.00 172.50 312.00 680.00 966.50 1171.00 1345.00 1006.50 495.50 170.00 45.50 6581.00
1968 76.50 125.00 306.50 368.00 729.50 931.07 b 1251.00 1024.00 885.50 403.50 142.00 40.50 6283.07
1969 2.50 0.50 219.00 432.50 820.00 1056.50 1176.50 1094.50 891.50 408.50 130.50 29.00 6261.50
1970 15.00 72.50 226.00 331.50 745.00 1009.50 1236.50 1204.50 740.36 b 454.50 152.50 4.81 b 6192.67
1971 92.43 d 85.08 b 90.23 c 388.50 612.00 g 811.67 c 1179.00 1324.73 a 701.50 456.65 e 120.00 c 7.00 i 5249.79
1972 26.41 d 58.58 d 230.00 303.50 795.50 917.50 1153.00 1197.00 0.00 z 0.00 z 102.50 88.50 4872.49
1973 8.00 45.50 306.00 505.18 b 775.50 896.50 1255.00 1148.00 840.00 467.00 83.50 78.00 6408.18
1974 98.00 87.00 219.00 414.00 639.00 1025.00 1118.00 1214.50 934.50 486.00 162.00 41.50 6438.50
1975 16.00 25.00 126.00 302.50 733.48 c 876.50 1281.00 1051.50 944.50 488.50 142.00 52.50 6039.48
1976 18.50 77.00 151.50 381.00 708.00 814.50 1122.00 1029.50 950.50 215.00 o 154.14 a 10.50 5417.14
1977 5.00 119.00 149.50 h 607.00 638.50 1049.00 1121.00 1269.50 741.00 483.00 134.00 67.50 6234.50
1978 12.00 37.50 295.50 402.50 650.50 980.00 1180.50 1079.50 770.00 320.50 i 0.00 z 7.00 5415.00
1979 0.00 49.00 247.50 425.50 784.41 c 981.92 d 1216.50 1155.00 937.00 569.37 a 55.00 80.50 6501.70
1980 0.00 15.00 193.00 517.50 711.34 c 802.50 d 1158.00 987.00 821.00 454.00 136.67 c 63.00 5859.01
1981 60.00 108.50 306.38 a 433.00 698.50 785.50 1081.50 1249.50 827.00 393.00 161.50 43.00 6147.38
1982 34.00 105.50 219.00 315.50 685.50 998.50 1098.50 1150.00 806.00 401.00 73.50 16.00 z 5887.00
1983 70.00 f 100.50 311.50 424.00 826.00 873.50 1048.00 1166.00 738.00 474.00 202.50 0.00 6164.00
1984 46.00 46.50 282.50 384.50 591.50 829.50 1178.50 1145.00 729.50 350.50 86.50 0.00 5670.50
1985 0.00 21.00 170.00 480.50 748.00 918.00 1322.50 1064.00 640.50 390.00 73.50 0.00 5828.00
1986 14.00 78.00 316.00 423.00 758.00 1061.50 1052.50 1294.00 750.50 551.50 174.00 9.00 6482.00
1987 14.50 89.50 275.50 579.00 832.00 1009.00 1110.50 1140.00 0.00 z 511.00 0.00 z 52.00 5613.00
1988 14.50 114.00 243.00 505.00 698.50 880.00 1177.50 1100.50 b 775.50 592.50 144.00 8.50 6253.50
1989 43.00 5.00 169.50 516.00 652.00 985.50 1109.00 1060.00 818.00 419.00 113.50 3.00 5893.50
1990 52.50 39.50 309.00 584.50 659.00 903.50 1266.50 1167.00 1010.50 0.00 z 229.50 17.50 6239.00
1991 18.00 150.00 183.00 465.00 678.50 741.50 1187.00 1235.00 933.50 480.00 106.50 55.00 6233.00
1992 65.50 102.50 382.50 499.00 867.50 1110.50 1162.50 1158.00 754.50 478.00 107.00 2.00 6689.50
1993 2.00 4.00 137.00 388.00 818.50 853.00 955.50 1045.00 798.00 486.00 55.50 55.50 5598.00
1994 32.00 29.00 272.00 518.50 784.00 910.50 1279.00 1170.50 926.50 473.00 49.00 44.50 6488.50
1995 19.50 138.50 213.50 370.00 746.50 833.50 1110.50 1002.50 893.00 424.50 132.00 26.50 5910.50
1996 26.00 40.00 126.00 426.00 596.00 881.50 1178.50 1068.50 735.50 394.00 94.00 25.66 b 5591.66
1997 32.50 63.50 0.00 z 396.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 24.00 516.50
1998 47.50 93.00 303.50 489.00 758.00 970.50 1336.50 1279.50 982.00 0.00 z 257.50 76.50 6593.50
1999 67.50 112.00 236.50 452.07 a 636.50 887.00 1134.50 1171.28 a 837.93 a 437.50 243.00 71.82 a 6287.60
2000 10.50 48.87 b 202.53 a 504.44 c 594.50 f 948.62 a 1166.00 1167.00 746.67 c 0.00 z 55.00 0.00 a 4849.64
2001 9.82 a 10.37 a 276.42 a 412.50 b 789.00 842.07 a 1220.07 c 1234.00 923.50 442.55 b 204.64 b 38.00 6402.94
2002 61.00 65.50 154.50 439.50 668.50 934.00 1200.50 1123.50 845.00 422.00 173.00 0.00 z 6087.00
2003 48.50 87.00 308.50 0.00 z 664.50 0.00 z 0.00 z 1193.50 931.50 0.00 z 101.00 16.00 3350.50
2004 0.00 z 32.00 349.00 0.00 z 710.00 977.50 1269.00 1230.00 852.00 522.87 a 108.00 52.00 6102.37
2005 6.50 36.50 315.00 0.00 z 776.00 882.50 1196.00 0.00 z 0.00 z 515.00 69.00 10.00 3806.50
2006 54.00 45.00 217.50 429.00 736.00 972.32 b 806.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2453.82
Period of Record Statistics
MEAN 32.67 69.13 235.53 439.48 719.80 924.94 1177.05 1154.58 846.80 469.33 133.55 34.12 6201.93
S.D. 26.04 39.97 65.76 76.13 66.10 84.53 83.12 90.78 92.92 59.95 55.25 26.67 323.12
SKEW 0.72 0.24 -0.01 0.13 0.14 0.13 -0.02 0.20 -0.03 0.43 0.34 0.31 -0.47
MAX 98.00 150.00 382.50 607.00 867.50 1110.50 1348.50 1345.00 1010.50 600.00 257.50 88.50 6689.50
MIN 0.00 0.50 90.23 302.50 591.50 741.50 955.50 987.00 640.50 350.50 49.00 0.00 5591.66
NO YRS 44 47 46 44 44 45 43 44 42 39 43 43 28