All day Vote for Your Favorite Scarecrow! Ages: 3 and upFamily Free Halloween Stony Brook Village CenterStony Brook
10 am – 4 pm Gem, Mineral, Jewelry and Fossil Show Ages: 3 and upFamily Planting Fields Arboretum State Historic ParkOyster Bay
11 am – 3 pm MONSTERS & MERMAIDS: New Exhibition Opening & Family Bash Ages: AllArt Attractions Family The Whaling Museum & Education CenterCold Spring Harbor
11 am – 7 pm Halloween House Long Island Ages: 13 and upAttractions Family Halloween Broadway CommonsHicksville
Today, 9:30 am Discover the Orthodox Christian Church (English Language Services) Holy Trinity Orthodox Church of East Meadow