How are you getting all that produce to can this time of year? From my 11 years living in North Central Texas, I learned that there was just a barbed wire fence between TX and the North Pole, and that was only one strand which enhanced those Blue Northers. Of course the offset was 50's and 60's or more a few days later.
No way! Even here we have too much humidity for a swamp cooler. But, my house was built in about 1905. Back then people didn't build for A/C, they built for getting a breeze so I had lots of airflow from windows. I facilitated that with box fans in the windows and ceiling fans. It really wasn't too bad if we used the WalMart pool to cool off when we needed to.
Well, I'm culling my stuff I'm canning from some culled produce I pick up for my compost piles. Not all that everyone else thinks is waste, is really waste.