Daily GDD Report for Port Huron

To calculate the GDD for a given time span, choose an End date and a Start date, then click the "Calculate GDD" button at the bottom.
*Please note that since the GDD dates are in descending order, the form is arranged to choose the End date first, and then the Start date.

Date Daily
GDD		 Accumulated
GDD		 GDD Calculator
End Date Start Date
May 18, 2026 42 1174
May 17, 2026 36 1132
May 16, 2026 30 1096
May 15, 2026 19 1066
May 14, 2026 17 1047
May 13, 2026 16 1030
May 12, 2026 10 1014
May 11, 2026 7 1004
May 10, 2026 12 997
May 9, 2026 21 985
May 8, 2026 22 964
May 7, 2026 18 942
May 6, 2026 18 924
May 5, 2026 18 906
May 4, 2026 18 888
May 3, 2026 18 870
May 2, 2026 18 852
May 1, 2026 12 834
Apr 30, 2026 11 822
Apr 29, 2026 11 811
Apr 28, 2026 17 800
Apr 27, 2026 24 783
Apr 26, 2026 21 759
Apr 25, 2026 31 738
Apr 24, 2026 31 707
Apr 23, 2026 31 676
Apr 22, 2026 31 645
Apr 21, 2026 31 614
Apr 20, 2026 31 583
Apr 19, 2026 31 552
Apr 18, 2026 31 521
Apr 17, 2026 31 490
Apr 16, 2026 31 459
Apr 15, 2026 31 428
Apr 14, 2026 31 397
Apr 13, 2026 31 366
Apr 12, 2026 31 335
Apr 11, 2026 31 304
Apr 10, 2026 31 273
Apr 9, 2026 31 242
Apr 8, 2026 31 211
Apr 7, 2026 31 180
Apr 6, 2026 31 149
Apr 5, 2026 31 118
Apr 4, 2026 31 87
Apr 3, 2026 26 56
Apr 2, 2026 21 30
Apr 1, 2026 21 9

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