All day Vote for Your Favorite Scarecrow! Ages: 3 and upFamily Free Halloween Stony Brook Village CenterStony Brook
9 am – noon Walk to End Alzheimer’s – Eastern Long Island Free Fundraisers Suffolk County Farm and Education CenterYaphank
9 am – noon Walk to End Alzheimer’s – Eastern Long Island Free Fundraisers Suffolk County Farm & Education CenterYaphank
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Animals Community Hallock State Park PreserveRiverhead
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Environment Free Hallock State Park PreserveRiverhead
10 am – 4:30 pm Heritage Fall Festival 2024 Ages: AllFamily Festivals Food & Drink Heritage Farm and GardenMuttontown
11 am – 4 pm Secret Sirens Ages: 5 and upArt Family Free The Whaling Museum & Education CenterCold Spring Harbor
2 – 7 pm Downtown Riverhead’s Halloween Fest Ages: AllFamily Free Halloween Downtown RiverheadRiverhead
2 – 4:30 pm Islip Arts Council Hispanic Heritage Month Celebration Free Islip Arts Council, South Shore Mall
4:30 – 7 pm Lights Out @ the Museum Ages: 3 and upArt Attractions Family The Whaling Museum & Education CenterCold Spring Harbor
All day Vote for Your Favorite Scarecrow! Ages: 3 and upFamily Free Halloween Stony Brook Village CenterStony Brook
9 am – noon Walk to End Alzheimer’s – North Babylon Free Fundraisers Belmont Lake State ParkNorth Babylon
9 am – noon AMSEAS Community Beach Cleanup at Lido Beach Town Park Community Environment Lido Beach Town ParkLido Beach
9:30 – 11 am Discover the Orthodox Christian Church (English Language Services) Ages: AllCommunity Family Free Holy Trinity Orthodox Church of East MeadowEast Meadow
10 am – 4:30 pm Heritage Fall Festival 2024 Ages: AllFamily Festivals Food & Drink Heritage Farm and GardenMuttontown
11 am – 4 pm Secret Sirens Ages: 5 and upArt Family Free The Whaling Museum & Education CenterCold Spring Harbor
4 – 5 pm Soup & Salad in the Sukkah Ages: AllCommunity Family Food & Drink Chabad of the HamptonsEast Hampton
Behind the Hedges Water Mill Almost Hits $6M Median, Becomes No. 3 Most Expensive Zip Code in the Country