Do you know how much the lockers cost? In November during the day it will be nice but cool off alot at night. I dont want to have carry around sweatshirts all day. What works for you?
The biggest of the big lockers, something like a Jumbo or extra Jumbo or something like that, was $15 for an 18 hour rental (with in/out privileges). I had my suitcase and carry-on and I could have fit probably 3 times the items I had in there it was so big!
The area I rented in (the picnic area, outside of the "secure" part of the esplanade, over to the right when coming from DTD) seemed to have only big lockers but hopefully knowing the highest price will help you out with the smaller lockers!
It was $7 for small and $15 for large last time we used them. You are able to go back and reopen it multiple times during the day. If DL lockers are full, DCA has them as well.