If you planning to travel to Princeton Public Library, Princeton, New Jersey, 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 11:43 AM. The temperature feels like 37.4 with a humidity level of 63 so dress accordingly. Cloud coverage is 66 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling northeast at a speed of 4 MPH. At the end of the day don’t miss the sunset at 9:40 PM.