Frost likely overnight as temperature drops

Frost likely overnight as temperature drops

It's a sign that cooler temperatures are in store.Environment Canada has issued its first frost advisory of the season for Sarnia-Lambton.The national weather agency said the temperature is expected to drop to near freezing Wednesday night and into early Thursday morning.It said frost may damage some crops in frost-prone areas.We're being told to cover up plants, and take preventative measures to protect frost-sensitive plants and trees.Environm…