I arrive in DL on Monday, leave on Friday morning. I've been watching what the weather is doing out there. It has been consistently in the 70's, with sunny or partly sunny weather. Looks no different next week. I have to think that your dh looked at WDW vs DL!!! It's not going to be sunny there next week!!
I've been to DL in the rain. First time I was there, Dec '14. We were there for an overnight, and of course, it rained for almost the entire time. I think there were maybe, 4 hrs total that it didn't rain!!! And unlike WDW, DL isn't equipped for rain. Most restaurants have outside seating, the drainage is miserable. When I got home, I realized that I still had no idea how DL is laid out!!! My head was down almost the entire time I was there!!! My feet were wet most of the time..at least it wasn't 50 degrees!!!
Second time I went, last Dec, no rain! It was wonderful!!!