STEPHENSON 8 WNW, MICHIGAN

Monthly Total Growing Degree Days

(207867)

Base Temperature = 40 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 200810
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 0.00 z 867.50 822.50 643.00 212.00 70.00 3.00 2618.00
1949 0.00 0.00 7.00 160.71 b 421.00 795.00 934.00 846.00 459.50 343.50 29.50 1.50 3997.71
1950 0.00 0.00 2.50 15.00 a 357.50 667.50 763.50 631.00 499.00 347.00 10.86 a 0.00 3293.86
1951 0.00 0.00 9.00 131.00 541.50 576.21 a 832.50 678.00 469.00 234.50 7.78 c 10.50 3489.98
1952 0.00 0.00 0.00 253.97 a 429.50 734.48 a 903.00 752.50 555.00 a 125.55 a 47.50 0.00 3801.50
1953 0.00 0.00 17.50 57.50 401.00 690.00 a 852.50 850.95 a 558.62 a 368.50 105.00 0.00 3901.57
1954 0.00 0.50 2.00 179.00 296.00 734.00 817.50 751.00 481.03 a 241.50 35.00 0.00 a 3537.53
1955 0.00 0.00 5.50 260.69 a 490.50 708.00 1028.00 941.00 561.00 288.50 3.00 0.00 4286.19
1956 0.00 0.00 a 0.00 a 33.50 360.12 a 712.00 731.00 763.50 387.50 388.50 100.34 a 0.00 3476.46
1957 0.00 0.00 1.00 220.00 383.00 693.75 b 859.50 758.00 466.00 201.00 28.45 a 0.00 3610.70
1958 0.00 1.00 0.00 136.50 362.50 528.50 767.25 a 779.00 524.48 a 276.93 a 63.50 0.00 3439.67
1959 0.00 0.00 0.00 96.00 517.00 705.00 821.00 910.50 566.00 153.50 3.50 0.00 3772.50
1960 0.00 0.00 3.50 166.50 384.50 626.25 b 785.00 815.00 575.00 247.50 34.00 8.50 3645.75
1961 0.00 a 0.00 10.69 b 79.00 353.00 668.00 808.50 812.00 572.50 249.00 29.00 7.50 3589.19
1962 0.00 0.00 3.50 124.50 548.00 650.50 724.00 766.00 437.50 323.00 1.50 23.77 a 3602.27
1963 0.00 0.00 40.30 a 138.50 335.00 732.50 862.50 734.50 504.50 465.50 56.50 0.00 3869.80
1964 0.00 0.00 6.50 160.00 584.50 683.00 899.50 689.00 466.00 200.00 99.50 0.00 3788.00
1965 0.00 0.00 a 0.00 66.00 504.50 618.50 749.00 755.00 443.50 262.50 23.50 0.00 3422.50
1966 0.00 0.00 19.50 71.00 306.00 733.00 946.50 750.00 510.50 190.50 12.00 0.00 3539.00
1967 2.00 0.00 24.00 120.50 269.50 709.50 783.50 693.00 499.00 215.50 21.00 0.00 3337.50
1968 0.00 0.00 65.50 159.00 351.00 681.50 833.00 798.50 598.50 337.00 16.50 2.00 3842.50
1969 0.00 0.00 1.00 157.50 458.00 509.00 818.50 908.50 540.50 216.00 31.00 0.00 3640.00
1970 0.00 0.00 0.00 219.00 413.00 743.00 927.50 817.00 554.00 298.00 26.00 4.50 4002.00
1971 0.00 0.00 0.00 129.50 338.00 820.50 771.00 718.00 585.00 439.50 44.00 0.00 3845.50
1972 0.00 0.00 0.00 71.00 520.00 647.50 814.50 804.50 485.50 187.50 20.00 0.00 3550.50
1973 1.00 0.00 37.50 131.00 334.00 741.50 889.50 887.00 541.00 402.50 12.00 0.50 3977.50
1974 0.00 0.00 9.50 193.50 353.50 595.00 873.00 775.50 386.50 219.00 46.50 0.00 3452.00
1975 0.00 0.00 4.50 70.50 612.00 734.50 946.00 848.50 419.00 301.50 128.00 1.00 4065.50
1976 0.00 1.50 25.00 187.00 357.50 799.50 897.50 796.00 483.00 161.00 6.00 0.00 3714.00
1977 0.00 0.00 24.00 290.00 652.50 636.50 950.50 705.50 542.00 206.50 79.14 a 0.00 4086.64
1978 0.00 0.00 1.50 67.00 496.50 658.50 795.00 816.00 619.00 218.50 56.50 0.00 3728.50
1979 0.00 0.00 2.00 119.50 370.97 a 682.00 891.00 777.50 560.00 175.00 14.00 0.00 3591.97
1980 0.00 0.00 3.00 192.00 566.00 676.00 899.00 855.00 516.00 137.50 19.50 0.00 3864.00
1981 0.00 13.00 38.50 143.00 395.00 699.50 845.00 811.50 467.50 145.00 49.50 0.00 3607.50
1982 0.00 3.50 10.00 83.50 598.00 504.00 878.50 698.00 510.50 296.00 32.00 19.50 3633.50
1983 0.00 0.50 7.00 89.50 264.50 698.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1060.00
1984 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 857.15 a 450.00 271.00 14.50 0.00 1592.65
1985 0.00 0.00 13.50 218.50 501.50 571.50 768.00 749.50 510.00 177.00 17.00 0.00 b 3526.50
1986 0.00 0.00 36.00 231.50 509.00 603.00 895.00 670.00 509.50 168.50 12.00 0.00 3634.50
1987 0.00 0.00 36.50 243.00 468.00 809.50 686.50 i 786.50 539.00 88.00 53.00 0.00 3023.50
1988 0.00 a 0.00 4.50 107.00 502.00 776.50 902.00 885.50 519.00 105.00 19.50 0.00 3821.00
1989 0.00 0.00 27.50 93.75 b 396.00 612.00 874.50 792.50 481.50 237.50 3.50 0.00 3518.75
1990 0.00 0.00 43.50 253.00 316.50 670.00 806.50 772.00 536.00 151.50 65.00 0.00 3614.00
1991 0.00 0.50 12.50 209.00 566.50 797.00 838.50 862.50 460.50 158.00 4.00 0.00 3909.00
1992 0.00 0.00 0.00 74.00 398.50 589.50 664.50 664.00 449.00 190.50 6.00 0.00 3036.00
1993 0.00 0.00 26.00 58.50 392.50 599.50 842.00 812.50 358.50 118.50 0.50 0.00 3208.50
1994 0.00 0.00 11.50 112.00 395.50 728.00 794.50 699.50 568.00 247.50 36.50 0.00 3593.00
1995 0.00 0.00 34.00 23.00 362.00 821.00 842.00 910.00 424.50 249.00 0.50 0.00 3666.00
1996 0.00 0.00 0.00 55.50 306.50 672.50 731.50 793.50 546.50 168.00 12.50 0.00 3286.50
1997 0.00 1.00 4.00 101.50 207.00 740.00 797.00 660.50 529.00 221.00 17.50 0.00 3278.50
1998 0.00 1.50 54.50 147.00 596.00 674.00 830.50 857.50 600.00 0.00 z 0.00 z 12.50 3773.50
1999 0.00 b 0.00 25.50 143.28 a 487.50 734.50 649.50 k 617.50 f 523.89 c 169.98 a 88.89 c 0.50 2174.04
2000 0.00 d 6.44 b 82.15 a 92.59 a 474.50 639.50 780.00 794.50 508.00 315.00 70.86 a 0.00 3763.54
2001 0.00 a 0.00 0.00 193.00 495.50 665.50 841.00 909.00 484.50 188.00 106.50 20.50 3903.50
2002 3.50 0.00 2.00 143.50 250.00 737.00 967.50 829.50 614.00 144.50 12.00 0.00 3703.50
2003 0.00 0.00 f 34.00 124.50 375.00 630.00 835.00 892.00 558.00 185.50 5.00 0.00 3639.00
2004 0.00 0.00 18.00 127.50 320.00 590.50 773.50 681.00 661.00 213.50 31.50 0.00 3416.50
2005 0.00 z 0.00 22.00 150.50 344.00 839.00 886.50 0.00 z 0.00 z 289.00 45.50 0.00 2576.50
2006 0.00 0.00 14.00 0.00 z 475.50 675.50 545.50 m 550.50 i 490.00 152.00 37.50 2.00 1846.50
2007 0.00 0.00 a 70.78 a 145.50 485.50 741.00 839.50 0.00 z 0.00 z 372.50 17.00 0.00 2671.78
2008 0.00 0.00 0.00 123.50 i 291.50 694.00 612.50 h 767.50 422.50 g 30.00 y 0.00 z 0.00 z 1753.00
Period of Record Statistics
MEAN 0.11 0.51 16.17 137.19 421.04 684.80 841.36 788.61 514.16 235.45 35.15 2.00 3657.65
S.D. 0.54 1.94 19.31 64.24 102.26 76.04 69.19 74.28 62.85 85.12 31.21 5.20 247.05
SKEW 5.24 5.27 1.51 0.33 0.24 -0.22 0.09 -0.05 -0.10 0.70 1.15 2.96 0.02
MAX 3.50 13.00 82.15 290.00 652.50 839.00 1028.00 941.00 661.00 465.50 128.00 23.77 4286.19
MIN 0.00 0.00 0.00 15.00 207.00 504.00 664.50 631.00 358.50 88.00 0.50 0.00 3036.00
NO YRS 58 58 59 57 59 59 55 56 57 58 58 59 50