you should be ok if you start again right away. you can't tell what the weather will be, so i hope luck is on your side for a few weeks of below 90 weather. if not, don't sweat it and give it a go.
squzie, from what i've heard and experienced, tomato pollen/flowers won't do their little dance if the temp is in the high 80's or higher.
fortunately, termaters are vining plants with lots of stored energy, so even in a rough season or with a late start, you can get a crop out of them. they really want to reproduce.
carol, you could consider floating row cover once the new seedlings are established to help protect them from direct sun. and water in the early mornings so they are ready for the day.
A true lover of nature does not despair now that his mistress has turned a colder cheek.