Your morning New Hampshire weather update Patchy fog is settling into the Connecticut River Valley and Merrimack Valley this morning, but don't worry – it'll burn off quickly as temperatures climb from our current 56 degrees to a toasty 85 by mid-afternoon. Your Tuesday morning commute might encounter some reduced visibility, especially along Route 89 through Lebanon and the Upper Valley. By 9 A.M., that fog will lift, giving way to mostly sunny skies.