Poa Annua can germinate throughout fall. Fall runs until Dec 21. Maybe into winter if ground is not frozen.

poa annua germination time - Google Search

 

Never noticed it at this time; usually in the Spring only.

 

Yep just started seeing some in my overseeded areas, always fun. Hoping next year to finally be on full season pre emergent.

 

Pest Outlook Maps | GreenCast | Syngenta

 

This tool is awesome, thanks for posting it

 

Yeah, comes in very handy at times.