RICHLAND, WASHINGTON

Monthly Total Growing Degree Days

(457015)

Base Temperature = 50 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
1944 0.00 z 0.00 z 0.00 z 0.00 z 189.00 r 529.00 826.50 702.50 512.50 213.50 3.75 b 0.00 j 2787.75
1945 11.00 10.50 19.50 137.00 447.00 586.03 a 907.50 851.00 454.00 267.00 40.50 0.00 3731.03
1946 0.00 a 0.50 40.00 187.50 498.50 579.50 877.00 602.00 h 484.50 139.50 a 9.50 17.50 2834.00
1947 16.50 10.00 95.00 227.00 624.50 516.50 817.00 735.00 551.50 233.50 25.00 0.00 3851.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 691.00 669.50 699.50 522.60 e 53.50 l 2.00 0.00 2584.60
1949 0.00 4.00 12.00 197.50 518.50 573.00 786.50 759.50 a 538.50 87.00 29.48 a 3.50 3509.48
1950 0.00 4.00 9.50 63.50 300.00 533.00 790.00 827.00 544.00 117.50 6.72 a 5.00 3200.22
1951 0.00 a 12.50 8.00 172.50 394.00 592.00 887.12 a 773.00 525.00 202.00 2.50 3.00 3571.62
1952 0.00 1.50 49.00 245.00 469.00 584.50 874.50 787.50 598.00 314.00 2.50 0.50 3926.00
1953 28.00 10.50 55.50 157.50 354.00 458.00 825.00 778.50 580.50 240.00 28.50 5.00 3521.00
1954 0.00 17.50 7.00 131.00 428.00 504.00 774.00 694.00 457.50 98.00 32.00 0.00 3143.00
1955 0.00 2.50 4.50 54.50 289.00 640.50 730.00 786.00 522.50 204.50 22.50 0.00 3256.50
1956 1.00 1.00 31.00 237.00 495.00 525.50 883.00 763.12 a 535.50 159.50 5.50 5.50 3642.62
1957 0.00 11.00 15.00 179.00 497.50 655.00 780.50 722.50 595.00 114.00 7.00 4.50 3581.00
1958 0.00 30.00 6.00 128.00 624.00 760.00 991.00 951.50 538.00 223.50 63.50 6.50 4322.00
1959 0.00 4.00 20.50 171.00 298.00 564.50 799.00 667.50 427.00 178.50 39.00 7.50 3176.50
1960 0.00 0.00 79.00 150.50 305.50 580.00 923.00 669.00 472.00 220.50 15.50 0.00 3415.00
1961 13.00 21.50 53.00 164.50 378.50 745.00 874.50 917.00 416.50 160.50 1.03 a 0.00 3745.03
1962 5.00 0.00 17.50 223.00 295.50 563.50 776.00 702.50 528.00 157.50 42.50 0.00 3311.00
1963 1.00 5.50 39.50 121.00 408.50 590.50 686.00 768.00 622.50 270.50 22.00 0.00 3535.00
1964 0.00 0.00 19.00 105.50 308.50 538.00 768.00 617.50 423.00 165.00 4.50 1.00 2950.00
1965 0.50 5.50 17.00 193.50 325.50 542.00 765.00 747.00 414.00 272.50 43.00 0.00 3325.50
1966 0.00 1.50 54.00 190.00 417.00 509.00 700.50 732.50 556.00 165.50 6.00 1.00 3333.00
1967 11.50 16.50 27.00 51.50 348.50 627.50 799.00 868.00 613.50 225.00 21.50 3.00 3612.50
1968 12.50 38.00 51.00 112.00 391.00 576.00 832.00 644.00 489.50 108.00 2.50 2.00 3258.50
1969 0.00 0.00 48.00 124.00 446.50 701.50 715.50 614.50 451.50 55.50 9.50 0.00 3166.50
1970 0.00 0.00 15.00 51.50 326.00 640.50 793.50 700.00 316.00 103.00 4.00 0.00 2949.50
1971 12.50 4.00 8.50 91.50 385.00 417.50 756.00 832.50 297.50 133.00 3.00 0.00 2941.00
1972 9.00 22.50 52.50 74.00 395.50 565.00 726.00 764.00 344.50 106.50 0.00 16.00 3075.50
1973 0.00 3.00 10.00 132.50 374.50 532.50 758.50 679.00 443.50 135.00 13.00 1.00 3082.50
1974 8.50 0.00 26.50 119.50 291.50 653.00 743.50 773.00 539.00 126.50 8.50 0.00 3289.50
1975 0.00 2.00 6.50 52.50 313.00 501.50 864.50 660.50 487.50 164.00 39.83 a 20.50 3112.33
1976 0.00 0.00 14.00 92.00 346.50 464.00 728.50 664.50 565.00 159.00 17.00 0.00 3050.50
1977 0.00 17.00 24.00 240.00 a 284.50 696.50 756.00 901.50 390.00 115.50 26.00 6.50 3457.50
1978 0.00 0.00 97.00 122.00 306.00 615.00 792.05 a 718.00 430.50 135.00 9.00 0.00 3224.55
1979 0.00 3.00 35.00 110.00 413.50 595.50 818.50 779.00 556.50 243.50 0.00 0.00 3554.50
1980 0.00 0.00 13.00 195.00 373.50 471.50 773.50 651.50 0.00 z 175.00 33.50 13.50 2700.00
1981 0.00 18.00 45.00 142.00 353.50 478.50 722.50 844.00 482.50 101.50 14.50 3.50 3205.50
1982 0.00 14.00 a 14.50 87.00 311.50 603.50 712.00 729.00 414.50 94.50 2.00 0.50 2983.00
1983 2.00 4.00 44.50 109.00 409.00 511.00 691.00 816.00 322.50 86.50 31.50 0.00 3027.00
1984 3.50 0.00 16.00 49.50 220.50 453.50 780.00 742.00 359.48 a 142.50 2.59 a 0.00 b 2769.57
1985 0.00 0.00 16.50 216.21 a 438.00 609.50 935.00 685.00 339.50 161.00 36.50 0.00 3437.21
1986 0.00 37.50 65.50 87.41 a 371.50 698.50 632.40 a 838.50 377.50 153.50 14.50 0.00 b 3276.81
1987 0.00 0.00 46.00 230.50 458.50 609.50 320.00 r 680.50 523.00 133.00 25.50 4.00 2710.50
1988 0.00 7.00 15.00 156.50 338.00 504.50 725.00 673.50 407.50 267.00 35.00 0.00 3129.00
1989 4.50 0.00 19.00 193.00 307.00 588.00 693.00 638.50 444.00 143.00 42.00 0.00 3072.00
1990 5.00 4.50 34.00 201.50 277.50 519.00 804.00 745.50 593.50 100.00 41.50 0.00 3326.00
1991 0.00 2.00 5.00 107.00 253.00 384.00 735.50 793.00 490.00 158.50 4.50 1.00 2933.50
1992 2.50 0.00 39.00 170.00 406.50 655.00 720.00 757.50 361.50 151.50 2.00 0.00 3265.50
1993 0.00 0.00 5.50 91.50 488.50 513.00 558.50 633.50 435.50 156.50 5.50 6.50 2894.50
1994 0.00 z 0.00 61.50 190.50 383.50 495.00 823.50 0.00 z 0.00 z 127.50 4.50 8.00 2094.00
1995 0.50 29.00 0.00 z 0.00 z 403.50 0.00 z 744.00 0.00 z 0.00 z 0.00 z 34.00 2.50 1213.50
1996 1.50 2.00 6.00 147.50 204.00 463.00 767.50 685.50 390.00 166.00 3.50 0.00 2836.50
1997 0.00 1.50 16.00 82.00 383.00 470.00 682.50 784.00 466.00 114.50 2.00 0.00 3001.50
1998 0.00 0.00 21.00 105.00 339.00 547.00 890.00 811.50 590.00 106.50 0.00 z 0.00 3410.00
1999 0.00 7.50 17.00 75.50 241.00 471.00 655.50 758.00 387.50 101.50 32.00 3.00 2749.50
2000 0.00 0.00 0.50 165.50 339.50 517.50 697.00 710.50 406.00 87.50 0.00 0.00 2924.00
2001 0.00 0.00 10.85 a 101.00 394.50 442.50 715.00 770.00 0.00 z 127.00 21.00 0.00 2581.85
2002 0.00 6.50 19.50 121.50 273.50 571.00 809.00 696.00 449.00 119.00 19.50 2.00 3086.50
2003 1.50 4.00 83.50 120.50 336.50 586.00 830.00 761.50 513.50 262.50 14.50 0.00 3514.00
2004 2.50 0.00 73.50 152.00 334.50 571.50 823.50 780.50 425.50 178.00 6.50 1.50 3349.50
2005 0.00 0.00 20.00 128.00 396.00 504.00 774.50 747.00 411.00 164.00 1.50 0.00 3146.00
2006 2.00 0.00 23.50 98.00 349.00 550.50 844.50 696.00 446.00 110.00 31.00 0.00 3150.50
2007 0.00 2.00 62.00 102.00 351.50 504.00 855.00 675.50 431.00 122.00 12.50 13.50 3131.00
2008 0.00 0.00 z 0.00 45.50 373.00 466.50 745.50 690.50 442.00 114.00 21.00 0.00 2898.00
2009 7.50 0.00 6.00 96.50 340.00 576.00 816.50 745.00 502.50 79.50 4.50 0.00 3174.00
2010 0.00 0.00 13.50 120.50 210.50 454.00 736.00 700.00 445.50 141.50 24.00 0.00 2845.50
2011 13.00 0.50 18.50 23.00 194.00 448.45 a 630.00 749.50 530.69 a 167.50 6.00 5.00 2786.14
2012 0.00 0.00 16.00 146.90 a 282.00 425.50 756.50 753.50 466.50 142.00 32.59 a 3.00 3024.48
2013 0.00 0.00 a 48.50 8.00 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 48.50
Period of Record Statistics
MEAN 2.63 5.96 29.29 134.34 364.67 553.07 777.55 742.31 470.72 156.24 17.21 2.60 3251.87
S.D. 5.25 9.16 23.59 54.62 86.65 80.26 78.50 71.28 78.29 55.94 14.90 4.50 310.74
SKEW 2.56 1.97 1.09 0.19 0.64 0.40 0.07 0.61 -0.09 0.82 0.73 2.29 0.87
MAX 28.00 38.00 97.00 245.00 624.50 760.00 991.00 951.50 622.50 314.00 63.50 20.50 4322.00
MIN 0.00 0.00 0.00 23.00 194.00 384.00 558.50 614.50 297.50 55.50 0.00 0.00 2749.50
NO YRS 67 67 67 66 67 68 68 66 65 67 68 68 59