Yo Yo Weather

It's bad enough for the plants to have to cope with up and down temperatures. My neighbor said her lilacs have frozen for three years running. I enjoy warm spring temps as much as the next person, but mid 80's? Really. And, it's always April Fool because the temps always drop to freezing or below a few days later. We had near 90 degrees a few days ago then we had 29 last night. My 1-3 week old chicks have heat lights in their little brooder area, but when the temp rises outside, the temp rises inside. They get too hot so I raise the heat light further from them then they get too chilly. Ei yi yi. Where is that mother hen when you need her?!