Most bush green beans take 75 days and soil temp shouldn't be a problem. Also squash, okra and tomatoes for fall. You don't say where you are, but in Texas we have trouble with the soil being too hot for anything else other than what I mentioned. Won't work with beans, but many veggies can be started in the house to get them to germinate. It's immperitive that you get them outside the moment you see even the tiniest speck of green or they will bolt upwards toward the light and their stems will be too weak and spindly to live. It's just the temp. at germination that is the problem Many veggies germinate best at about 75-80 degrees.
You could also plant in partial shade. I almost do anyway since it is so hot here. I have lush herbs on a shady patio. It's not a hard and fast rule that all veggies need full sun. (Beets, lettuce, and peppers will tolerate shade,) Full sun is really a matter of lumins, not bright blistering sun. If you have high headed trees it often works well. When the seed catalogs say, "full sun" oftentimes they are talking about full sun in VT where people can't even go swimming 'til August. Full sun in Texas is as much as 119 degrees in July. And it stays there for at least 3 weeks at a time. You can water all you want, but everything just cooks in the ground, wet or not. Pots are even worse. (veggies and herbs grown in those don't even have to be cooked.) LOL
You can also use misters to cool the air without running a lot of water. They are cheap to buy and run as most of them will only use about 15 gallons a day. We use them on everything......livestock, chickens, plants and patios. We even have to have ceiling fans in our horse stalls. We use them on our swimming pool decks or otherwise we could never walk on them. The only way we can live in this hot climate.