PLAIN, WASHINGTON

Monthly Total Growing Degree Days

(456534)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1937 0.00 z 0.00 z 0.00 z 77.00 i 364.00 546.50 826.50 513.50 386.00 132.50 0.00 0.00 2769.00
1938 0.00 0.00 0.00 z 45.00 o 330.00 648.00 870.50 660.50 611.00 222.00 11.50 11.00 3364.50
1939 0.50 0.00 62.50 215.50 401.21 e 479.50 771.50 762.00 487.00 233.00 13.00 4.50 3430.21
1940 0.00 0.00 70.00 167.50 441.00 610.50 769.00 719.50 575.00 267.50 0.00 0.00 z 3620.00
1941 0.00 z 3.77 b 118.00 263.00 372.50 549.00 896.50 795.50 371.50 223.00 34.00 4.50 3631.27
1942 0.00 0.50 26.50 213.50 341.00 495.00 834.50 829.50 554.00 237.00 1.50 7.00 3540.00
1943 3.00 4.00 0.00 z 0.00 z 0.00 z 0.00 z 755.50 669.00 557.50 233.00 15.00 6.50 2243.50
1944 0.00 1.04 a 38.50 155.00 385.50 596.00 803.00 678.00 585.00 353.92 a 25.00 0.00 3620.95
1945 9.00 1.50 15.00 114.00 430.00 570.00 779.00 743.00 429.00 332.50 27.00 0.00 l 3450.00
1946 1.50 10.89 a 21.50 177.00 431.50 448.50 704.50 730.50 442.00 127.50 0.00 3.00 i 3095.39
1947 0.00 z 13.50 84.00 218.50 381.00 h 0.00 z 0.00 z 649.00 508.00 202.50 22.00 0.00 b 1697.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 651.50 646.00 433.00 138.00 0.00 0.00 1868.50
1949 0.00 0.00 c 2.00 141.50 440.00 441.50 680.00 657.50 466.00 127.50 73.00 0.00 3029.00
1950 0.00 0.00 1.50 54.50 285.64 c 530.50 784.50 776.50 513.50 95.00 0.00 p 0.00 3041.64
1951 0.00 0.50 2.00 0.00 z 0.00 z 549.00 753.50 695.50 470.00 130.50 0.00 z 0.00 z 2601.00
1952 0.00 a 0.00 36.00 180.00 384.73 c 470.00 750.50 744.50 569.00 350.00 4.00 0.00 3488.73
1953 1.00 2.50 o 25.50 f 115.00 311.50 418.00 704.14 c 710.00 487.50 245.00 16.00 0.00 3008.14
1954 0.00 2.00 0.52 a 47.59 a 358.57 a 439.00 665.35 d 612.50 463.50 121.50 73.00 0.00 2783.52
1955 0.00 0.00 0.00 25.50 214.42 a 552.50 691.50 713.50 489.31 a 152.00 14.00 0.00 2852.73
1956 0.00 0.00 a 0.00 m 243.33 c 560.77 c 456.50 847.50 783.50 495.00 174.50 5.00 0.00 3566.10
1957 0.00 2.00 1.50 g 109.50 m 533.50 579.50 667.65 d 605.00 571.00 146.50 8.57 b 0.00 h 3113.72
1958 0.00 5.50 12.00 118.00 573.00 718.50 925.00 0.00 z 0.00 z 0.00 z 27.00 1.50 2380.50
1959 0.00 1.00 9.00 167.07 a 298.50 518.00 774.00 666.50 431.90 a 201.00 41.38 a 0.00 g 3108.34
1960 0.00 j 2.69 b 76.50 i 0.00 z 372.00 c 0.00 z 872.50 0.00 z 420.00 243.00 6.72 a 0.00 d 1916.91
1961 0.00 b 5.25 d 42.07 c 96.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 47.32
1962 8.86 c 8.40 c 14.00 f 173.04 b 265.57 a 355.50 l 679.79 c 0.00 z 533.04 b 0.00 z 24.64 b 0.00 d 1693.32
1963 0.00 c 28.00 e 40.82 a 59.00 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3.50 l 0.00 k 68.82
1964 0.00 a 0.00 a 19.50 f 77.14 b 328.71 b 526.73 d 616.00 g 636.02 a 303.00 h 194.04 d 6.96 b 0.00 g 1769.60
1965 0.00 9.15 b 21.70 a 206.25 b 312.30 d 570.00 c 802.90 a 754.13 e 443.89 c 292.90 b 73.45 a 0.00 p 3486.67
1966 0.00 l 2.24 c 55.36 c 189.00 453.63 a 521.38 a 573.00 f 773.28 d 665.89 b 211.00 23.28 a 2.21 c 2897.27
1967 1.11 c 11.85 b 21.18 a 70.50 386.50 671.38 a 802.68 c 927.79 c 472.00 i 214.50 h 0.00 z 0.00 z 2892.98
1968 0.00 z 0.00 z 0.00 z 0.00 z 368.50 541.00 826.50 658.00 523.00 97.00 0.50 0.00 3014.50
1969 0.00 0.00 o 25.00 107.00 476.50 716.00 716.00 680.50 508.50 157.50 31.00 0.00 3418.00
1970 0.00 0.00 17.50 58.00 372.50 680.50 807.50 756.50 380.50 141.00 12.50 0.00 n 3226.50
1971 21.50 5.00 0.50 90.50 420.00 456.50 772.50 854.50 363.50 213.50 17.00 0.00 3215.00
1972 3.50 0.00 30.50 49.00 443.50 571.00 682.50 793.00 378.50 204.00 5.00 0.00 3160.50
1973 0.00 0.00 37.00 187.00 390.50 531.00 791.00 722.00 519.50 194.00 0.00 0.00 3372.00
1974 1.50 0.00 14.00 137.00 270.50 602.00 712.00 764.00 570.50 235.00 14.00 0.00 3320.50
1975 0.00 0.00 7.00 67.50 339.00 510.50 846.50 644.00 532.50 164.50 25.00 5.00 3141.50
1976 0.50 1.00 14.00 119.50 381.00 455.00 715.00 686.50 575.00 209.00 43.00 6.00 3205.50
1977 1.50 14.50 20.00 248.50 296.50 671.50 702.50 875.50 441.50 183.00 2.50 0.00 3457.50
1978 0.00 2.00 80.50 152.50 347.00 653.50 808.58 a 725.92 a 453.50 250.00 16.50 0.00 3490.00
1979 0.00 0.50 33.50 162.00 412.00 596.50 822.00 796.00 596.00 321.50 2.00 7.50 3749.50
1980 0.00 3.00 18.50 252.50 434.50 517.00 772.50 667.00 512.00 254.00 28.00 0.00 3459.00
1981 0.00 7.00 94.00 170.00 383.50 460.00 739.00 889.00 517.50 179.00 27.00 0.00 3466.00
1982 0.00 3.00 11.00 75.00 356.00 657.00 759.00 740.50 506.00 194.50 2.00 0.00 3304.00
1983 5.00 0.00 40.50 178.00 482.50 553.00 658.50 814.50 411.00 197.00 13.00 0.00 3353.00
1984 8.00 0.00 60.00 98.50 261.50 520.00 777.00 788.00 408.00 151.50 0.00 0.00 3072.50
1985 0.00 7.00 19.00 176.00 443.00 595.00 932.50 729.50 392.00 160.50 17.50 0.00 3472.00
1986 0.00 10.00 83.50 141.50 396.00 684.50 643.50 873.50 397.50 250.00 10.50 0.00 3490.50
1987 0.00 0.00 18.50 251.00 439.50 669.31 a 748.00 753.50 616.50 267.00 66.00 0.00 3829.31
1988 0.00 8.50 27.50 212.00 360.00 525.00 736.00 736.00 499.00 370.50 14.50 0.00 3489.00
1989 6.50 0.00 13.00 234.50 354.50 615.50 714.50 714.50 520.00 203.00 65.00 0.00 3441.00
1990 0.00 2.00 66.50 256.50 324.00 542.00 843.00 802.50 627.50 98.00 47.50 0.00 3609.50
1991 0.50 0.00 20.00 136.00 320.50 467.50 756.00 804.00 590.50 235.00 3.50 1.00 3334.50
1992 0.00 0.50 137.00 213.00 500.50 729.50 764.50 785.00 441.00 224.00 7.00 0.00 3802.00
1993 0.00 0.00 8.00 100.00 548.50 526.00 576.00 703.50 542.00 298.00 11.50 0.00 3313.50
1994 0.50 0.00 75.00 247.50 446.50 518.00 852.50 749.00 615.00 171.00 0.00 0.00 3675.00
1995 0.00 1.00 19.00 132.00 455.50 549.50 768.50 587.00 581.00 133.00 10.50 0.00 3237.00
1996 0.00 0.00 8.00 135.00 236.00 511.00 799.50 738.50 439.50 174.00 9.50 0.00 3051.00
1997 0.50 0.50 4.00 73.00 413.00 494.50 710.00 806.00 538.00 150.50 28.50 4.50 3223.00
1998 0.00 0.00 48.50 168.50 439.00 585.50 914.00 832.50 665.00 175.50 19.00 0.00 3847.50
1999 0.00 a 0.00 12.00 132.00 275.50 481.00 700.50 810.00 459.50 163.00 49.00 0.00 3082.50
2000 0.00 0.00 16.50 222.00 341.00 561.50 724.00 727.00 451.00 158.50 1.50 0.00 3203.00
2001 0.00 0.00 24.00 135.00 399.50 477.00 759.00 808.00 569.00 133.00 14.00 0.00 3318.50
2002 0.00 0.50 14.50 147.00 309.00 618.50 806.00 723.50 480.50 180.00 34.00 0.00 3313.50
2003 0.00 0.00 40.00 132.00 354.50 639.50 839.00 806.50 555.00 309.00 3.00 0.00 3678.50
2004 0.00 0.00 69.50 244.50 407.50 660.50 840.00 845.00 455.00 242.50 9.00 0.00 3773.50
2005 0.00 5.50 84.00 201.00 477.50 506.00 795.00 803.50 465.00 236.00 0.00 0.00 3573.50
2006 0.00 0.00 14.50 142.50 394.00 594.00 865.50 769.50 547.50 240.00 9.50 0.00 3577.00
2007 0.00 0.00 49.00 135.00 406.50 553.50 877.50 731.50 509.00 132.00 39.50 0.00 3433.50
2008 0.00 7.00 1.00 67.00 429.50 501.00 763.00 722.00 484.50 165.50 18.00 2.50 3161.00
2009 5.00 0.00 4.50 136.00 371.00 662.00 909.00 848.00 572.50 142.00 5.00 0.00 a 3655.00
2010 0.00 2.00 40.50 162.50 288.50 510.00 824.50 739.50 501.00 240.50 41.00 0.00 3350.00
2011 0.00 0.00 a 15.00 49.50 278.00 494.00 694.00 817.00 569.50 165.50 0.00 0.00 3082.50
2012 0.00 i 0.00 b 7.00 154.50 344.50 308.00 i 870.07 a 854.80 d 591.96 b 216.48 a 35.36 b 0.00 3074.67
2013 2.07 a 6.74 a 56.66 b 9.00 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 65.46
Period of Record Statistics
MEAN 1.18 2.79 33.03 151.85 382.35 556.89 774.61 745.47 504.66 202.35 19.08 1.00 3386.01
S.D. 3.25 4.74 30.12 61.61 75.81 76.87 74.96 77.37 73.24 63.16 19.22 2.33 247.86
SKEW 4.25 2.75 1.30 -0.04 0.26 0.42 -0.02 -0.26 0.04 0.64 1.33 2.45 -0.18
MAX 21.50 28.00 137.00 263.00 573.00 729.50 932.50 927.79 665.89 370.50 73.45 11.00 3847.50
MIN 0.00 0.00 0.00 25.50 214.42 418.00 576.00 513.50 363.50 95.00 0.00 0.00 2783.52
NO YRS 69 72 66 66 70 68 71 71 71 71 71 64 48