Howdy,
Not to be ornery, but I just is..
We had eight new shooters with us last month. It was hotter than blazes, July in Central Texas. They all had a blast and I expect we'll see most them again.
So my advice is to strike while the iron is hot! Don't put off an interested shooter. If they have a decent time under less than perfect conditions, think about how much fun they will have in great weather.
Adios,