Water Temperature at Marblehead Station is 37.2. Next two weeks+ forecast has a lot of cold days, so don't hold your breath the Lake water temperature is going to hit 40 anytime soon. With that forecast I would think we are looking at a pretty "normal" start time for reef and shoal jigging. Yes, there are always some early jacks around to be caught. But I'd think planning a trip before at least the middle of March, if the current forecast holds up, would be premature. Not much fun to be out there sitting / drifting around in 34-38 degree or lower air temps and 38 degree water temps to catch some walleye.