Weather for Centereach, NY - Centereach, NY Weather, Current Weather in Centereach, NY. Local weather report for Centereach, NY, Local Centereach, NY weather. Forecast for Centereach, New York, Centereach, NY weather forecast. Find your local Centereach weather forecast. Centereach, NY weather conditions. Weather outlook for Centereach, NY. Weather report for Centereach, NY. Weather Maps and Driving Directions Maps. Centereach Weather - Weather Centereach.