I haven't been up there in a month or so, but I can tell you that Route 25 is roughly the rain-snow line. There's about 3-4" of snow here in Tamworth, whereas there is no snow in Ossipee proper. If you're going up Dicey's, it's fairly tame terrain until the last few hundred vertical feet.
If I were hiking Passaconaway in the next few days via that route, I'd start barebooting, with Microspikes and snowshoes on my pack. I think an ice axe and crampons would be overkill.