COLLEGE OF FOOD, AGRICULTURAL,
AND ENVIRONMENTAL SCIENCES

The Ohio State Phenology Calendar

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Wooster on 1/21/2026 6:02:47 AM is 0 GDD

The GDD on 1/21 in previous years:


  • 2025: 0
  • 2024: 0
  • 2023: 14
  • 2022: 1
  • 2021: 0
  • 2020: 14
  • 2019: 6
  • 2018: 6
  • 2017: 12
  • 2016: 0
  • 2015: 2
  • 2014: 0
  • 2013: 12
  • 2012: 2
  • 2011: 1
  • 2010: 0
  • 2009: 0
  • 2008: 25
  • 2007: 9
  • 2006: 12
  • 20 Year GDD Average for Wooster on 1/21 - 6
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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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