Various The Great Jack O’ Lantern Blaze: Hudson Valley Ages: AllAttractions Festivals Van Cortlandt ManorCroton-on-Hudson
9am–2pm Run Wild – Halloween Costume Run Ages: 5 and upFundraisers Halloween The Nature Center at GreenburghScarsdale
9–11am Breakfast with the Hawks Ages: 5 and upAnimals Environment Arthur W. Butler Memorial SanctuaryMount Kisco
10am–7pm Brick-or-Treat: Monster Party Ages: 3 – 12Attractions Games LEGOLAND Discovery Center WestchesterYonkers
10am–noon The Creepy Chemistry Halloween Mad Science Family Event Ages: 5 – 8Halloween Holiday Chappaqua Performing Arts CenterChappaqua
Noon–4pm Family Art Workshop: Masquerade Masks Ages: AllAttractions Craft & DIY Hudson River MuseumYonkers
Noon–4pm Family Science Workshop: Visualizing Heat Ages: AllAttractions Classes Hudson River MuseumYonkers
1–3pm Ghoulishly Good Times at Gateway Port Chester Shopping Center Ages: 12 and underFree Games gateway port chesterPort Chester
1:30–3:30pm Prismatic Landscapes: Abstract Photography Workshop Ages: AllArt Classes Hudson River MuseumYonkers
2–4pm The Wizard of Oz Ages: AllMusic Theater Christopher J. Murphy Auditorium Murphy Science Building Iona UniversityNew Rochelle
5:30–8pm Mystic Moon: A Spooktacular Experience at Harvest Moon Farm & Orchard Ages: 3 and upFood & Drink Halloween Harvest Moon Farm & OrchardNorth Salem
7pm The Haunt at Wildcliff Mansion Ages: 9 and upHalloween Holiday Hudson Park Children’s GreenhouseNew Rochelle
7–9pm The Wizard of Oz Ages: AllMusic Theater Christopher J. Murphy Auditorium Murphy Science Building Iona UniversityNew Rochelle
Today, noon “Bulls of Wall Street,” a New Exhibition on 19th-century Finance The Lockwood-Mathews Mansion Museum
Today, 4 pm Giant Game Night @ the Village Branch Haverstraw King’s Daughters Public Library Village Branch