If you planning to travel to Mather House Museum, Port Jefferson, New York, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 11:52 AM. The temperature feels like 50.8 with a humidity level of 79 so dress accordingly. Cloud coverage is 45 percent with visibility at 11.7 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 13 MPH. At the end of the day don’t miss the sunset at 9:25 PM.