Frost Advisory issued September 29 at 9:41PM EDT until September 30 at 8:00AM EDT by NWS

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY... * TEMPERATURE...lower to middle 30s by late tonight in much of the advisory area, especially inland from the Great Lakes. This will be conducive for frost formation. * IMPACTS...tender vegetation may be damaged or killed if left unprotected or not brought indoors.

from Current Watches, Warnings and Advisories for the United States Issued by the National Weather Service http://ift.tt/2yy2oDU