Everybody: Plant some lettuce!

[jimmy the one]

14. Lettuce is a cool season crop, likely will not go in summer heat

I planted twenty seeds in April, ten germinated, and have had leaf lettuce daily May and June, and they just bolted early July.
You can try but I doubt will grow. They might germinate then die. Further north better chance but Idaho and Montana had 100 degrees yday.
You can cover any seedlings with leaning sticks to keep in shade, or somehow shelter them from the sun all but one morning hour for first couple weeks, and never let full sun hit them all day no matter how big they get.
Best chances wait till mid August and plant for a fall crop Octoberish.