Chance of frost tonight and then back to great
spring weather.  Protect the warm season plants
with Remay, an old sheet, jugs of water, or even
the sprinkler early in the AM.
Do it now to add extra warmth to the soil for tonight. 
Placing the jugs of water out in the days, will add 3-8
degrees of warmth to the soil, which them re radiating
back up around the plants. This is where black black
 around the plants really is a saver.