The heat will make your fans leaves huge and the bud single bladed leaves will be long.

The result will be shading on your flowers...

I noticed more green than I wanted growing...ie....more flowers is want I wanted.

Stunt growth? No way.

As for being chilly....the temps at the stage for this plant went to a low of 51F for several days in early April....I saw no side effects...

Day 18