COLLEGE OF FOOD, AGRICULTURAL,
AND ENVIRONMENTAL SCIENCES

The Ohio State Phenology Calendar

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Wooster on 8/17/2026 11:32:43 PM is 2,359 GDD

The GDD on 8/17 in previous years:


  • 2025: 2,228
  • 2024: 2,401
  • 2023: 2,003
  • 2022: 2,358
  • 2021: 2,313
  • 2020: 2,275
  • 2019: 2,252
  • 2018: 2,340
  • 2017: 2,274
  • 2016: 2,385
  • 2015: 2,175
  • 2014: 2,041
  • 2013: 2,159
  • 2012: 2,619
  • 2011: 2,345
  • 2010: 2,489
  • 2009: 2,018
  • 2008: 2,043
  • 2007: 2,259
  • 2006: 2,212
  • 20 Year GDD Average for Wooster on 8/17 - 2,259
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Denise Ellsworth
1680 Madison Ave. | Wooster, OH 44691
Phone: 330-263-3723 | ellsworth.2@osu.edu


Ashley Kulhanek
4046 Medina Road | Medina, OH 44256
Phone: 330-661-6404 | kulhanek.5@osu.edu


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