I've done Liberty and Flume as a day hike, and it was a nice day hike. When I did Little Haystack, Lincoln, and Lafayette, it was long for a day hike. That was where I the "fool killer" weather on Franconia Ridge. In the parking lot, mid 80s and a gorgeous sunny day. On the ridge, suddenly we were in freezing fog at about 50 mph winds -- and already sweaty and tired from the climb. We had coats and hats, but not earmuffs and gloves, and we needed them. By the time we returned to the parking lot, it was glorious cloudfree sky again. That's when the waterproofs can save your life.