40 percent isn't "humid" around here, but I guess it is for Joshua Tree. It's currently 98% humidity, but that's with a temp under 80'. Last week, we had a few days when it got up around 100' and something over 80% humidity. That was brutal.
No matter where you live, the weather presents challenges I think. You're right, it'll take some time to adapt, but you'll do fine. You have a good "Bloom where you're planted" attitude!
Good luck with your move... hope you have lots of space for irises!
