If you planning to travel to Market Square, Portsmouth, New Hampshire, 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 12:12 PM. The temperature feels like 3.55 with a humidity level of 52 so dress accordingly. Cloud coverage is 6 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 9:13 PM.