My ambient water temperature coming out of the "cold" faucet was 80F a few weeks ago and ambient solutions were at 76F. I long ago settled on 75 instead of 68 because that usually was either ambient or required warming, not cooling, which for me is much harder to control. Now they're down a few degees, was 73 last rolls I did. I have a CPE2 so heating up a few degrees is simple, cooling not so much. These are moderate compared to, say, Arizona.
I'm guessing you're saying it's too cold there? Usually easy enough to warm up a bit, it's cooling that's harder if the "cold" water isn't cold enough.