MIDWAY SAND ISLAND, PACIFIC OCEAN

Monthly Total Growing Degree Days

(914490)

Base Temperature = 50 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 199108
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
1953 521.50 464.50 561.50 583.00 696.50 792.00 924.83 a 913.50 842.50 808.00 742.50 553.50 8403.83
1954 486.00 415.50 464.00 479.50 625.68 a 796.50 861.36 c 888.67 a 830.50 814.50 661.50 598.00 7921.71
1955 502.50 429.00 463.50 526.50 715.50 833.50 873.00 865.00 830.17 a 777.58 a 628.00 545.50 7989.76
1956 299.00 j 452.50 493.50 529.50 629.50 777.93 a 825.50 859.00 880.00 798.00 607.00 522.00 7374.43
1957 266.50 j 417.50 509.50 509.00 647.00 806.90 a 608.00 j 895.50 839.00 667.00 562.00 584.50 6437.90
1958 489.00 393.00 468.00 536.50 648.00 701.00 814.50 602.00 j 581.50 j 788.50 612.00 534.50 5985.00
1959 399.00 395.00 546.50 458.00 612.00 761.50 875.50 910.00 864.00 731.50 598.50 580.00 7731.50
1960 369.50 j 401.50 489.50 528.50 679.42 a 835.00 869.03 a 636.50 i 869.00 737.50 646.00 546.00 6601.45
1961 487.00 499.50 509.50 388.50 558.50 749.50 847.00 880.00 872.50 773.50 689.50 603.50 7858.50
1962 465.50 424.00 492.50 479.00 592.50 689.50 829.50 906.00 894.00 809.50 707.07 a 574.50 7863.57
1963 510.50 414.00 513.50 510.00 683.50 808.00 839.00 884.00 901.00 863.00 703.50 518.00 8148.00
1964 583.00 531.00 524.50 461.50 643.50 742.50 853.50 863.00 863.00 824.00 646.50 483.00 8019.00
1965 403.50 418.00 467.50 468.46 d 446.50 f 732.00 836.00 880.50 552.00 j 539.50 j 470.50 h 518.98 b 4724.94
1966 517.50 396.00 534.50 528.50 565.00 478.00 j 817.50 859.50 847.50 764.50 620.00 384.50 j 6450.50
1967 589.00 409.00 390.00 544.50 613.00 738.00 829.00 901.00 904.50 865.00 734.00 579.50 8096.50
1968 444.50 370.00 423.50 457.00 648.50 760.50 897.00 945.00 864.00 726.50 528.00 544.00 7608.50
1969 406.50 427.00 496.50 597.00 763.50 755.00 898.00 885.50 841.50 768.00 615.50 570.50 8024.50
1970 478.00 430.50 0.00 z 605.50 641.50 874.00 909.50 922.50 836.50 774.00 664.50 677.00 7813.50
1971 447.50 503.00 0.00 z 658.50 749.00 774.00 846.00 889.00 855.00 0.00 z 671.50 468.00 6861.50
1972 455.50 436.50 429.50 492.50 657.00 767.00 864.00 899.50 848.50 726.50 672.50 505.00 7754.00
1973 0.00 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 0.00 z 0.00 z 0.00 z 0.00
1974 315.00 m 450.00 g 0.00 z 75.50 z 0.00 z 0.00 z 117.50 z 555.50 l 857.14 b 0.00 z 0.00 z 86.00 z 857.14
1975 0.00 z 475.42 d 276.00 p 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 733.50 0.00 z 1208.92
1976 151.50 u 25.00 z 528.00 165.50 u 0.00 z 0.00 z 471.00 n 0.00 z 876.00 0.00 z 141.00 x 0.00 z 1404.00
1977 411.50 0.00 z 451.00 526.00 683.50 825.50 842.00 870.50 819.00 807.50 595.50 494.50 7326.50
1978 0.00 z 421.00 482.00 519.00 590.00 823.50 903.00 0.00 z 926.50 850.00 695.00 0.00 z 6210.00
1979 554.50 477.50 566.00 0.00 z 686.00 793.00 0.00 z 0.00 z 936.00 915.50 685.00 0.00 z 5613.50
1980 0.00 z 0.00 z 589.00 598.00 712.50 827.59 a 968.50 965.13 a 934.50 897.00 739.00 589.00 7820.22
1981 0.00 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 0.00 z 0.00 z 0.00 z 0.00
1982 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 33.00 z 96.00 z 321.00 s 716.50 562.50 1279.00
1983 486.50 446.50 484.00 519.50 669.00 885.00 968.50 923.00 760.50 f 934.50 756.35 d 604.50 7677.35
1984 555.50 564.50 592.00 712.00 0.00 z 966.00 1019.50 1028.50 946.00 844.50 439.00 n 564.50 7793.00
1985 0.00 z 0.00 z 552.00 598.50 781.00 878.50 916.00 960.00 930.50 0.00 z 647.00 599.50 6863.00
1986 552.00 422.50 503.00 546.50 553.00 818.50 920.50 943.50 886.00 855.50 698.00 622.50 8321.50
1987 536.00 439.50 537.00 0.00 z 679.00 795.50 973.50 1038.50 928.50 838.50 709.50 605.50 8081.00
1988 551.50 473.50 576.50 588.00 0.00 z 895.50 0.00 z 966.50 0.00 z 906.00 0.00 z 655.50 5613.00
1989 598.00 430.50 527.50 0.00 z 717.50 823.50 929.50 964.00 899.00 830.50 633.50 604.00 7957.50
1990 543.50 425.00 560.50 497.00 684.50 813.50 919.31 b 33.00 z 944.00 847.00 658.50 0.00 z 6892.81
1991 512.00 399.00 543.50 626.50 726.00 832.00 93.50 z 984.25 a 0.00 z 0.00 z 0.00 z 0.00 z 4623.25
Period of Record Statistics
MEAN 499.52 438.77 508.42 535.75 661.70 802.25 885.17 917.54 878.88 811.85 663.79 565.79 7980.07
S.D. 57.61 42.78 49.00 67.45 58.47 58.39 53.17 48.73 38.29 62.90 55.66 48.97 228.08
SKEW -0.16 1.14 -0.33 0.45 -0.01 0.49 0.69 0.92 0.35 -0.09 -0.37 0.05 0.29
MAX 598.00 564.50 592.00 712.00 781.00 966.00 1019.50 1038.50 946.00 934.50 756.35 677.00 8403.83
MIN 399.00 370.00 390.00 388.50 553.00 689.50 814.50 859.00 819.00 667.00 528.00 468.00 7608.50
NO YRS 27 31 32 30 30 32 29 28 30 29 31 29 13