WHITE SWAN, WASHINGTON

Monthly Total Growing Degree Days

(459191)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 198107
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 823.50 821.50 c 787.83 b 560.36 b 281.67 b 7.50 m 0.00 h 3274.86
1949 0.00 8.52 e 91.85 d 380.00 618.34 c 655.34 a 838.55 a 868.55 c 320.50 q 117.00 l 134.00 0.50 r 3595.16
1950 0.00 c 20.50 91.00 220.00 473.27 a 723.00 930.52 a 940.00 695.50 295.00 52.00 28.13 d 4468.91
1951 14.00 44.50 78.00 h 362.00 532.00 692.50 837.00 804.81 e 242.50 u 0.00 z 0.00 z 0.00 m 3286.81
1952 0.00 13.00 124.00 395.00 621.00 719.48 a 963.58 a 923.50 753.62 a 401.00 j 25.50 m 0.00 o 4513.19
1953 126.00 71.50 150.00 272.50 476.00 604.00 912.43 a 891.50 659.48 a 430.00 138.60 e 0.00 z 4732.02
1954 15.50 a 59.00 66.98 c 285.52 a 590.50 643.45 a 855.00 806.00 639.50 295.50 129.50 h 8.00 u 4256.95
1955 0.00 23.33 a 47.00 165.50 438.50 718.00 804.00 821.50 0.00 z 136.00 r 71.50 1.55 a 3090.88
1956 0.00 6.00 117.28 a 386.50 651.00 650.69 a 972.88 a 875.75 a 667.50 b 290.88 a 34.14 a 0.00 z 4652.63
1957 0.00 d 40.00 67.00 n 379.14 a 680.00 755.50 830.36 c 746.87 d 711.11 c 172.50 f 7.00 u 36.17 a 4179.14
1958 33.58 a 128.00 100.23 a 282.41 a 752.00 0.00 z 528.50 q 986.46 c 608.04 b 362.50 50.50 h 14.00 f 3253.23
1959 11.50 42.00 a 149.66 b 344.44 c 424.59 c 711.96 b 918.24 b 754.00 551.00 273.00 f 95.56 c 21.18 a 4024.13
1960 1.00 35.44 b 174.63 a 294.83 a 463.45 a 730.86 a 1018.00 822.50 641.90 a 366.66 b 56.00 0.00 o 4605.27
1961 24.91 c 76.50 173.50 296.00 566.86 c 855.00 b 1016.28 a 1053.50 543.62 a 258.52 c 11.00 j 12.00 4876.69
1962 36.50 24.00 93.53 b 403.50 431.93 a 667.50 b 857.15 a 834.86 b 693.62 a 306.79 b 0.00 z 36.34 b 4385.74
1963 14.97 b 51.00 146.39 d 248.79 a 541.97 b 716.79 b 795.67 d 896.42 a 771.96 b 385.95 a 83.00 0.00 w 4652.90
1964 2.38 e 25.00 90.86 b 241.03 a 489.28 a 650.56 c 829.52 b 772.33 b 543.50 313.88 c 27.50 v 2.98 e 3961.32
1965 0.00 z 0.00 z 36.50 t 391.73 d 474.50 709.29 b 938.27 a 897.45 a 529.00 0.00 z 0.00 z 0.00 z 3940.23
1966 0.00 z 0.00 z 0.00 z 0.00 z 566.61 d 616.67 c 820.98 a 854.57 a 715.71 b 323.84 c 69.11 b 29.97 a 3997.46
1967 50.50 g 73.50 120.79 b 161.50 520.00 796.55 a 914.00 988.26 b 843.50 382.16 b 84.64 b 30.47 b 4915.37
1968 27.90 a 100.00 203.50 258.00 e 540.50 724.00 968.00 790.50 684.50 224.50 52.50 19.50 4593.40
1969 0.00 b 0.00 153.45 a 300.00 a 612.25 a 877.76 a 502.00 n 813.00 662.00 283.50 105.00 0.00 b 3806.96
1970 0.00 74.50 177.50 275.50 567.62 b 884.46 b 954.50 914.00 527.50 291.29 b 97.50 b 12.00 4776.38
1971 94.00 75.00 72.50 294.23 d 372.00 m 597.00 963.00 730.00 h 473.00 299.50 27.22 c 3.00 2898.45
1972 32.00 47.00 182.50 188.50 594.00 733.50 896.79 c 931.11 c 511.50 297.71 b 43.80 e 48.16 c 4506.56
1973 4.65 a 33.70 a 172.00 335.00 577.50 719.48 a 942.50 839.14 b 609.31 a 289.50 30.00 25.50 4578.28
1974 63.50 29.00 142.50 338.00 476.00 801.00 898.50 955.00 741.50 356.50 91.50 21.70 a 4914.70
1975 14.00 7.00 60.50 226.50 550.50 722.00 1059.00 816.33 a 690.50 324.50 101.50 42.00 4614.33
1976 28.00 38.00 98.00 270.00 547.50 617.59 a 607.50 i 598.50 h 771.50 339.00 115.00 3.50 2828.09
1977 6.00 82.50 151.00 463.89 c 451.00 864.00 948.48 e 176.50 x 558.50 340.50 96.00 65.50 4027.37
1978 9.50 25.31 b 273.00 345.50 524.50 811.50 980.50 908.50 654.00 e 370.00 45.60 e 0.00 z 4947.91
1979 0.00 3.50 o 212.00 354.00 649.50 807.00 984.80 c 950.00 787.50 475.50 41.00 41.00 5302.30
1980 0.00 0.50 127.50 261.00 l 605.53 a 681.11 c 894.50 807.79 e 645.50 195.00 l 33.00 q 0.00 r 3762.43
1981 10.00 p 0.00 z 162.00 j 135.50 o 0.00 z 534.00 g 910.76 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 910.76
Period of Record Statistics
MEAN 19.31 43.25 134.42 305.32 548.65 727.53 912.11 868.40 648.19 327.41 75.69 24.03 4636.08
S.D. 29.73 31.58 51.61 74.28 79.01 81.20 69.31 76.17 93.41 54.93 33.04 17.80 156.88
SKEW 2.27 0.73 0.50 -0.08 0.41 0.34 0.04 0.43 0.03 0.78 0.22 0.42 0.80
MAX 126.00 128.00 273.00 463.89 752.00 884.46 1059.00 1053.50 843.50 475.50 138.60 65.50 4914.70
MIN 0.00 0.00 47.00 161.50 424.59 597.00 795.67 746.87 473.00 224.50 27.22 0.00 4468.91
NO YRS 29 29 28 30 31 32 31 30 30 25 22 20 7