April showers are supposed to bring May flowers — not frost. But that's what greeted many in the Tristate Sunday after a record overnight low of 30 degrees.

        The previous regional record was 37 degrees in 1894, according to the National Weather Service.

        In fact, temperatures fell to record lows Sunday in 26 states, from the northern Plains to the Gulf Coast.

        A high pressure system that swooped down from the north with frigid Canadian air is to blame for the cold snap here, said meteorologist Don Hughes.

        The cool weather panicked green thumbs, who jammed Frank's Nursery in Kenwood Saturday, quickly depleting the supply of thick cheesecloth used to cover plants.

        “Every other phone call and every third customer in the store was asking what to do to prevent their plants from getting too cold,” manager Andy Reid said Sunday.

        Temperatures will begin to bounce back to normal with highs in the 60s Wednesday and the 70s by Thursday.

        But temperatures overnight Sunday and Monday were expected to dip to near-record lows in the 30s again, Mr. Hughes said.

        Check the latest forecast, radar. and current conditions at Cincinnati.com

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