OLYMPIA AP, WASHINGTON

Monthly Total Growing Degree Days

(456114)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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 643.50 670.00 646.50 487.00 283.50 67.00 4.50 2802.00
1949 0.00 50.00 129.50 269.50 510.50 535.50 669.00 681.00 576.50 228.50 264.00 43.50 3957.50
1950 7.50 72.00 69.50 162.00 343.00 603.50 711.00 749.50 532.50 275.50 142.50 164.00 3832.50
1951 28.50 64.00 63.00 280.00 422.00 618.00 734.00 679.50 576.00 322.50 113.00 17.00 3917.50
1952 29.00 57.00 86.00 229.50 427.00 495.50 735.00 704.50 587.50 398.50 79.50 51.00 3880.00
1953 141.00 49.00 106.50 206.50 396.00 480.50 693.50 701.00 544.50 371.00 172.00 58.00 3919.50
1954 22.00 71.00 59.00 166.50 400.00 455.00 603.00 605.50 532.50 285.00 240.50 49.00 3489.00
1955 22.00 22.50 49.50 112.00 340.50 529.50 617.50 642.00 489.00 314.50 109.00 43.00 3291.00
1956 41.00 6.50 70.50 283.00 534.50 501.00 759.00 723.00 508.50 278.50 99.00 83.50 3888.00
1957 8.50 48.50 122.00 318.00 545.50 598.00 666.50 680.00 677.50 331.00 114.50 94.50 4204.50
1958 108.00 198.50 112.00 260.50 599.50 715.00 902.00 814.50 553.00 384.50 145.00 138.00 4930.50
1959 81.00 61.00 112.00 248.50 381.50 574.00 765.50 643.50 508.00 346.00 108.50 38.00 3867.50
1960 31.50 68.50 151.50 271.50 375.00 549.50 766.50 662.50 493.00 343.00 98.50 40.50 3851.50
1961 107.50 121.50 149.00 211.00 386.50 623.50 754.50 809.00 479.00 266.00 51.00 51.50 4010.00
1962 52.00 97.50 72.50 265.50 297.50 531.50 676.50 682.50 548.50 340.50 176.50 103.50 3844.50
1963 21.00 174.00 81.00 206.00 407.50 497.00 682.00 724.00 679.00 383.00 160.00 99.50 4114.00
1964 37.50 28.50 80.50 137.00 310.00 481.00 653.00 622.50 475.50 317.00 80.50 25.00 3248.00
1965 44.50 72.00 137.50 270.50 358.50 573.00 804.00 781.50 444.00 410.00 210.00 49.50 4155.00
1966 58.00 51.50 149.50 271.00 389.50 489.00 646.00 677.00 580.00 280.00 131.00 102.00 3824.50
1967 66.50 53.50 59.00 143.50 422.00 665.00 739.00 892.50 667.50 387.50 134.50 97.00 4327.50
1968 71.00 138.50 192.00 209.50 433.00 548.50 768.50 670.50 529.50 265.50 143.50 36.50 4006.50
1969 19.00 11.50 143.50 242.50 500.00 718.50 684.00 638.50 566.00 273.50 153.00 46.00 3996.00
1970 60.50 86.50 115.00 151.00 365.50 623.00 746.00 683.00 451.50 242.50 118.50 26.50 3669.50
1971 81.00 58.50 55.50 182.50 422.50 442.50 726.50 786.50 456.50 289.00 124.00 12.00 3637.00
1972 33.00 64.50 176.50 118.50 462.00 538.50 707.00 748.50 452.00 213.50 107.00 102.50 3723.50
1973 42.50 63.00 110.00 215.50 428.50 534.50 703.00 603.50 562.50 306.50 59.00 54.00 3682.50
1974 92.00 73.00 162.00 198.00 365.50 587.50 693.50 764.50 697.00 295.50 135.50 80.50 4144.50
1975 53.00 43.50 49.00 127.50 387.50 524.50 739.00 640.00 534.50 280.50 105.00 85.50 3569.50
1976 63.50 36.00 53.50 181.50 356.50 446.50 673.00 641.50 566.00 297.00 143.00 57.50 3515.50
1977 49.50 146.50 112.00 305.50 352.50 595.00 609.50 763.50 501.00 263.00 99.00 69.50 3866.50
1978 108.50 122.50 197.00 241.50 399.50 694.00 779.00 727.00 502.50 326.00 72.50 28.00 4198.00
1979 7.00 75.50 232.50 286.50 461.00 561.00 779.00 708.00 578.50 361.00 61.50 89.50 4201.00
1980 6.00 61.00 81.50 266.50 396.00 490.00 708.00 690.00 585.50 369.00 207.50 173.00 4034.00
1981 89.00 140.50 218.00 268.00 431.00 533.00 703.00 848.50 599.50 300.00 174.50 58.00 4363.00
1982 60.50 91.00 82.00 173.50 438.00 685.50 714.50 754.00 582.50 333.00 70.00 58.00 4042.50
1983 109.00 158.50 231.00 268.00 510.50 560.50 681.00 746.50 486.50 282.50 190.00 28.00 4252.00
1984 141.00 98.00 207.50 199.00 359.00 532.00 721.00 737.50 544.00 263.00 118.00 9.50 3929.50
1985 3.00 33.50 84.00 267.50 450.50 569.50 850.00 727.00 498.00 285.50 62.50 2.50 3833.50
1986 77.50 91.00 224.00 190.00 447.00 624.50 609.00 819.00 514.00 354.00 119.00 44.00 4113.00
1987 55.00 100.00 185.50 299.00 480.00 604.50 692.00 732.50 603.50 385.00 192.00 60.50 4389.50
1988 27.50 108.50 120.50 252.50 411.50 500.00 698.50 684.00 517.00 426.50 100.50 69.00 3916.00
1989 47.00 22.50 87.00 326.00 431.50 610.00 652.00 693.00 581.00 301.00 144.00 77.50 3972.50
1990 58.50 40.00 140.50 286.50 386.00 529.00 799.00 806.00 632.50 261.50 139.50 28.00 4107.00
1991 60.50 142.50 70.00 192.50 366.50 470.50 737.50 777.50 590.50 304.00 154.50 82.00 3948.50
1992 91.00 157.00 242.50 310.50 543.00 688.50 764.50 768.00 546.00 351.50 135.00 18.50 4616.00
1993 41.50 46.00 160.50 274.00 576.00 578.50 629.00 748.00 589.50 406.00 52.00 85.50 4186.50
1994 112.50 54.00 208.00 319.00 490.50 573.50 814.50 763.50 666.00 281.00 38.00 65.00 4385.50
1995 82.50 120.00 159.50 255.50 532.50 620.00 791.50 671.50 667.50 336.00 236.50 89.50 4562.50
1996 71.00 87.50 151.00 287.50 331.00 522.00 780.68 a 736.00 485.00 284.00 112.50 34.74 b 3882.92
1997 88.00 62.00 139.00 234.00 e 511.50 e 535.00 715.00 802.50 621.00 307.00 169.50 32.50 4217.00
1998 82.00 102.50 167.50 243.00 413.00 562.00 832.00 753.50 612.00 307.50 150.00 72.50 4297.50
1999 57.00 46.50 98.50 190.00 323.00 516.00 648.00 730.50 511.50 286.00 180.00 63.00 3650.00
2000 21.50 56.50 96.50 282.00 414.50 585.50 704.50 655.00 528.50 292.50 58.50 33.00 3728.50
2001 28.00 17.00 106.50 176.50 421.50 469.50 633.50 706.50 525.00 258.50 147.00 33.50 3523.00
2002 59.50 37.00 66.50 198.00 343.00 586.50 723.00 700.00 525.50 287.50 155.00 72.00 3753.50
2003 129.50 49.50 185.50 221.00 398.00 615.00 779.50 736.00 610.50 407.00 82.00 41.50 4255.00
2004 67.00 70.50 189.00 307.00 459.50 612.93 a 804.00 825.00 511.50 364.00 124.00 63.00 4397.43
2005 123.50 38.50 229.00 287.50 513.50 554.00 730.00 763.00 496.50 377.00 81.00 94.00 4287.50
2006 95.50 53.50 124.50 243.50 457.50 626.00 784.00 696.50 587.00 309.00 148.00 40.50 4165.50
2007 32.00 100.00 204.50 241.50 423.00 536.00 786.50 693.00 534.50 266.50 113.00 42.00 3972.50
2008 18.00 72.50 55.00 134.00 450.00 496.00 701.00 743.00 556.00 296.50 203.00 33.00 3758.00
2009 44.50 20.00 47.50 211.00 427.50 625.00 831.50 716.00 587.50 291.00 136.50 36.50 3974.50
2010 127.50 98.50 151.00 225.50 342.50 508.00 697.00 719.50 573.50 322.50 136.50 71.50 3973.50
2011 92.50 42.00 108.50 112.00 318.00 504.50 675.50 713.00 627.50 319.00 53.50 32.00 3598.00
2012 37.00 57.00 93.50 267.50 394.50 490.50 700.50 760.00 554.00 341.00 164.50 50.50 3910.50
2013 39.00 84.00 189.00 13.00 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 312.00
Period of Record Statistics
MEAN 59.42 74.55 128.66 230.96 421.43 561.33 722.26 721.73 553.65 315.62 128.71 59.00 3980.61
S.D. 36.25 41.35 55.82 56.43 67.44 66.30 62.88 59.71 60.19 47.80 49.47 34.21 307.89
SKEW 0.44 0.87 0.35 -0.42 0.52 0.42 0.32 0.32 0.40 0.41 0.41 1.06 0.23
MAX 141.00 198.50 242.50 326.00 599.50 718.50 902.00 892.50 697.00 426.50 264.00 173.00 4930.50
MIN 0.00 6.50 47.50 112.00 297.50 442.50 603.00 603.50 444.00 213.50 38.00 2.50 3248.00
NO YRS 65 65 65 64 64 65 65 65 65 65 65 65 64