The Latest Northeast Wisconsin Forecast from Storm Team 5…. Stubborn clouds this morning eroded away thanks to the sun above clearing us out to mostly sunny skies. That allowed temperatures in Green Bay and the Fox Valley to warm up to the upper 30s to low 40s this afternoon. For tonight a few clouds could roll back in but with mainly clear skies and calm winds, look for areas to develop some patchy fog overnight. Low temperatures will drop to below freezing, so condensation from the fog could freeze on surfaces and result in a few slippery spots.