Last night, I took out the trash to the curb and used the drop cloths I bought to cover the tomatoes and peppers as there were warnings out for chance of a frost.

I was up at 6:30 and slept well. The nighttime temperature never got below 36°, so my covering of the plants was unnecessary, but better safe than sorry. The next week will be warm, so we should be past all frost danger for the year.

I did some research as to why there are sometimes frost warnings when the predicted low temperature is several degrees above freezing. I discovered that the high and low temperatures are measured at four feet above the ground. On cold nights with little wind, the colder air sinks to the ground and can cause frost at that level, even though the temperature at four feet is several degrees higher.