“Phenology” is the study of the times when natural phenomena recur.  Chuck Tague and I built this list in 2008-2009, including links to his online material. His links are broken now and it is taking me a while to remove them. Chuck’s website was discontinued a few years after he passed away in June 2016.

NOTE: THIS PHENOLOGY IS OUTDATED DUE TO CLIMATE CHANGE.

• January
• Early February
• Late February
• Early March
• Late March
• Early April
• Late April
• Early May
• Late May through early June
• Mid to late June
• July
• August
• Early September
• Late September
• October
• Late October
• Early November
• Late November through early December
• Late December through early January