8 Oct 2020 Halloween 2020! Trick or Treat on Oct. 31st from 6-8 pm. by cityofflemington | posted in: Uncategorized | 0 Happy Halloween! Whether you’re a young child or young at heart, Halloween is such an exciting time. Trick or Treat hours in Flemington are on Oct. 31st from 6-8 pm. Please stay safe and adhere to CDC guidelines.