YAKIMA AIR TERMINAL, WASHINGTON

Monthly Total Growing Degree Days

(459465)

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
1946 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 562.20 e 206.00 10.00 33.50 811.70
1947 11.50 58.00 231.50 410.50 773.50 723.00 942.00 844.50 681.50 348.00 67.00 5.50 5096.50
1948 2.00 24.50 67.50 233.50 533.00 928.00 932.00 894.50 656.00 337.00 26.50 3.62 a 4638.12
1949 0.00 20.00 131.50 370.50 703.50 756.50 917.50 889.50 689.50 233.50 139.50 18.50 4870.00
1950 3.00 12.00 69.50 200.00 511.50 738.00 996.00 943.00 653.50 250.00 58.00 7.00 4441.50
1951 1.00 20.00 72.50 319.50 533.00 787.00 962.00 895.50 649.00 266.50 25.50 3.00 4534.50
1952 0.00 1.00 79.00 347.50 578.00 682.50 949.00 875.00 712.50 488.00 14.50 2.00 4729.00
1953 51.50 43.00 120.00 249.00 460.50 560.50 910.50 875.00 646.00 367.50 81.00 8.00 4372.50
1954 12.00 38.00 48.50 224.00 548.00 590.50 823.50 786.00 584.50 232.00 132.50 3.00 4022.50
1955 0.00 11.50 37.50 122.50 435.00 761.00 849.00 865.00 608.50 293.50 60.50 0.00 4044.00
1956 0.00 0.50 90.00 386.00 658.50 637.50 1016.00 924.00 630.50 268.00 40.00 30.00 4681.00
1957 0.00 21.00 81.00 342.00 694.50 767.00 833.00 774.50 668.50 250.00 15.50 7.00 4454.00
1958 16.00 91.50 64.50 238.50 744.00 878.00 1084.00 983.50 574.50 314.50 82.00 8.00 5079.00
1959 5.50 17.00 83.50 317.00 407.50 704.50 966.50 798.50 549.00 320.50 67.00 13.50 4250.00
1960 0.00 4.50 164.50 272.00 439.50 744.00 1090.50 807.50 617.50 339.00 22.00 0.00 4501.00
1961 20.00 53.00 140.50 293.00 492.50 849.50 1024.00 1040.00 546.00 252.50 4.50 1.00 4716.50
1962 16.00 24.50 85.00 354.50 423.50 695.00 921.00 806.50 652.50 303.00 94.00 5.00 4380.50
1963 4.00 48.00 121.00 212.50 550.50 733.00 839.00 904.50 764.50 363.50 71.50 0.00 4612.00
1964 1.50 8.50 72.00 169.00 419.50 659.50 867.00 707.50 513.00 312.00 25.00 5.50 3760.00
1965 8.50 28.50 105.50 312.50 507.00 734.00 930.50 879.00 536.50 387.50 117.50 4.50 4551.50
1966 1.00 13.50 142.00 358.00 568.00 640.50 853.00 965.50 794.00 373.00 123.50 23.00 4855.00
1967 42.00 59.00 84.00 147.50 546.50 832.50 971.50 1032.50 769.00 367.00 78.50 11.00 4941.00
1968 20.00 84.00 184.00 237.50 519.50 715.50 956.50 784.00 629.00 198.00 30.50 8.00 4366.50
1969 0.00 0.00 112.50 248.00 616.00 866.00 880.50 812.00 633.50 228.50 81.00 2.50 4480.50
1970 0.00 31.50 132.50 189.50 575.00 864.00 1007.00 932.00 525.00 269.00 60.00 0.00 4585.50
1971 52.00 43.00 43.50 233.00 641.00 620.00 970.50 1001.50 462.50 267.50 33.00 0.00 4367.50
1972 15.00 32.50 170.00 167.50 614.50 768.00 927.50 979.50 502.50 303.50 54.00 28.50 4563.00
1973 0.00 32.00 156.50 351.50 572.00 730.50 996.50 907.50 655.00 289.00 46.50 27.00 4764.00
1974 50.00 31.50 146.50 310.00 441.50 846.50 875.00 951.50 689.50 315.50 78.50 15.50 4751.50
1975 3.00 10.50 62.50 212.50 547.00 714.50 1083.00 816.50 662.00 291.50 69.50 42.50 4515.00
1976 10.50 14.00 59.50 242.00 500.00 596.00 897.50 815.50 730.00 295.50 87.00 0.00 4247.50
1977 9.00 55.00 101.00 421.50 395.00 861.50 894.00 1061.50 530.50 276.50 45.00 38.50 4689.00
1978 2.50 13.50 213.00 281.00 457.50 743.50 960.00 850.00 563.00 298.50 33.50 1.00 4417.00
1979 0.00 14.50 141.00 287.50 603.00 762.50 994.50 935.00 720.50 399.50 30.00 13.50 4901.50
1980 0.00 3.50 130.00 410.50 585.50 663.50 942.00 818.00 677.50 354.50 86.50 39.00 4710.50
1981 55.50 91.50 239.50 293.50 520.00 653.50 896.50 1024.00 646.00 272.00 80.00 12.00 4784.00
1982 12.00 77.50 100.50 176.00 495.00 804.00 889.00 868.50 605.00 280.50 24.00 15.00 4347.00
1983 33.00 69.00 241.00 294.00 647.00 687.00 855.00 955.50 543.00 328.00 115.00 0.00 4767.50
1984 12.00 14.50 165.50 214.00 384.50 632.50 946.00 891.50 569.00 243.50 20.50 0.00 4093.50
1985 0.00 6.50 81.00 327.50 582.00 736.50 1079.00 805.00 459.50 221.00 44.00 0.00 4342.00
1986 4.50 49.00 181.50 222.00 545.00 821.00 795.50 1010.00 507.50 343.50 57.50 0.00 4537.00
1987 0.00 16.00 134.00 384.50 605.50 777.00 862.50 881.50 686.00 320.00 86.00 15.50 4768.50
1988 0.00 52.00 88.50 335.50 467.00 663.50 905.00 858.00 586.00 471.50 48.50 2.50 4478.00
1989 20.00 0.50 81.00 362.00 502.00 772.50 886.50 832.00 629.00 274.50 113.50 2.00 4475.50
1990 17.50 29.00 154.50 399.50 463.50 709.00 1028.50 932.00 761.50 213.50 108.00 0.50 4817.00
1991 6.50 62.00 54.00 279.50 462.50 603.00 947.50 969.50 712.50 306.00 29.50 15.50 4448.00
1992 26.50 49.50 251.00 322.00 639.00 898.50 913.00 931.50 571.50 349.00 50.00 0.00 5001.50
1993 0.00 0.50 93.00 234.50 664.50 660.50 713.00 824.50 625.00 363.00 15.00 1.00 4194.50
1994 11.50 16.00 160.50 375.50 610.50 669.50 1048.50 910.00 731.00 296.50 13.50 17.00 4860.00
1995 10.00 79.50 124.50 239.50 589.00 676.50 915.50 761.50 709.00 259.00 99.50 5.00 4468.50
1996 6.00 20.50 118.00 287.50 407.50 691.00 1011.50 889.00 526.50 246.50 20.00 0.00 4224.00
1997 2.00 9.50 132.50 229.50 610.50 682.50 904.00 976.00 673.00 252.00 70.50 0.00 4542.00
1998 2.50 21.00 138.50 289.00 565.50 751.50 1119.00 979.50 757.50 238.00 79.50 20.00 4961.50
1999 10.50 39.50 91.50 215.50 419.50 677.50 845.50 946.50 579.50 237.00 112.50 24.00 4199.00
2000 0.00 8.00 85.50 343.50 527.00 744.00 911.50 873.00 589.00 268.00 10.50 0.00 4360.00
2001 0.50 1.00 144.00 227.00 562.00 646.50 959.00 983.50 713.00 276.50 72.00 0.00 4585.00
2002 18.00 38.50 70.50 263.50 471.50 761.50 1009.50 857.50 595.50 253.50 73.00 10.50 4423.00
2003 24.50 28.00 182.50 276.50 513.50 835.00 1049.50 959.00 712.00 436.00 20.00 0.00 5036.50
2004 5.00 8.00 195.50 346.50 529.00 768.50 1017.50 985.00 591.50 350.50 33.00 17.50 4847.50
2005 3.00 13.50 176.00 305.50 623.50 686.00 958.50 957.00 565.00 320.00 11.00 0.00 4619.00
2006 13.50 11.50 85.00 269.50 544.50 761.50 1052.00 910.50 648.50 296.50 66.50 4.00 4663.50
2007 2.00 10.00 162.50 267.00 563.00 701.00 1097.00 886.00 604.00 223.00 50.50 13.50 4579.50
2008 0.00 40.00 52.00 139.00 616.00 690.50 950.50 890.00 630.50 274.50 79.00 3.50 4365.50
2009 13.50 7.00 48.00 251.00 555.50 821.00 1044.00 952.50 667.50 225.50 26.50 0.00 4612.00
2010 6.00 50.00 129.50 275.00 438.00 680.00 984.50 899.50 664.00 348.50 92.00 0.00 4567.00
2011 23.50 20.00 99.50 146.00 450.50 676.50 867.00 1005.50 745.50 339.50 16.00 8.50 4398.00
2012 0.50 22.00 109.00 352.00 549.50 687.00 1062.50 1008.02 a 720.00 351.00 126.50 28.50 5016.52
2013 14.50 47.00 205.50 36.50 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 267.00
Period of Record Statistics
MEAN 10.63 29.42 121.18 279.01 541.19 730.00 948.27 902.56 632.29 300.56 59.02 9.32 4564.71
S.D. 13.85 23.83 52.68 72.67 86.04 79.95 81.96 76.98 78.48 60.58 35.48 11.18 272.17
SKEW 1.81 0.91 0.60 -0.05 0.33 0.35 -0.06 -0.14 -0.09 0.79 0.38 1.30 -0.24
MAX 55.50 91.50 251.00 421.50 773.50 928.00 1119.00 1061.50 794.00 488.00 139.50 42.50 5096.50
MIN 0.00 0.00 37.50 122.50 384.50 560.50 713.00 707.50 459.50 198.00 4.50 0.00 3760.00
NO YRS 67 67 67 66 66 66 66 66 67 67 67 67 66