Crocuses may be peeking out and trees may be starting to bud, but Old Man Winter isn’t done with Maine yet.

A storm that will drop “plowable amounts” of snow on most of the state is likely to move in late Sunday until Monday afternoon, said meteorologist Margaret Curtis with the Gray office of the National Weather Service.

“It’s too early to be talking amounts but we’re confident we’ll be seeing some snow,” Curtis said.

The weather system is still forming, with a low pressure system building and coming up the Eastern Seaboard as a “classic potential nor’easter,” she said. Temperatures were forecast to drop into the 30s Saturday through Monday.

Sunday is the first day of spring. Recent warm weather, after a mild winter, has prompted unseasonably early “ice-outs” on Maine lakes. Last week, temperatures in the 60s prompted more than 200 golfers to hit the links at Nonesuch River Golf Club in Scarborough.

Just Wednesday, the Department of Inland Fisheries and Wildlife announced that Maine’s open-water fishing season would begin Thursday – two weeks before the usual April 1 start – in response to the unseasonably warm weather and lack of ice.

In an unrelated storm, Lewiston got golf ball-sized hail Thursday as thunderstorms moved across the region, Curtis said.

“It’s been quite a weather day,” she said.