NWS Frost Advisory

After a very nice day we're in for a cold night. Frost is likely tonight, so a cool start for Saturday. Hopefully, not too cool to keep from clearing all the leaves that have been falling. 
From the NWS:

... Frost advisory remains in effect from 2 am to 9 am EDT Saturday...

* Locations... eastern Indiana... northern Kentucky and much of southwest Ohio.
* Temperatures... falling into the mid 30s.
* Timing... late tonight into early Saturday morning.
* Impacts... frost will develop which may damage sensitive vegetation.

Precautionary/preparedness actions...
A frost advisory means that frost is likely. Sensitive outdoor plants may be killed if left uncovered.