PORTLAND, Maine — The coming weekend could be the best of the fall for Maine’s leaf peepers. Most of the state is experiencing peak fall foliage conditions, while coastal and southern Maine are showing moderate color change, the Maine Department of Agriculture, Conservation & Forestry said. Northern Maine typically peaks earlier than the rest of the state, and parts of the far north are already past peak, the forestry department said. “The lack of rain this summer and the early widespread frost jump started the progression of foliage colors this season,” noted Gale Ross, the department’s fall foliage coordinator. The state is encouraging leaf watchers to practice social distancing while peeping this year due to the coronavirus pandemic.