Hot weather & 2 mile race performance

What’s the dewpoint? Will it be direct sun? Wind?

TBH just race and don't try to figure out how it will effect your time. Perhaps you might want to adjust your race plan to accommodate for the conditions, and you'll definitely want to hydrate, stay out of the sun, etc... but going in thinking that it will effect your time is probably going to limit you more than anything.

Say you somehow determine that it will take, like 30 seconds, off what you could do at 70 degrees F. Now you're going in thinking, "well I should go out my first mile 15 seconds slower than what I want to run." That's just going to limit you more than anything. Maybe the field is going to do something completely different.

Just run the race, don't worry about time, compete with the field, and worry about how conditions affected your race after you finish.

Just run baby.

Dew point will be about 56 F (14 C). Will be around 1900 so no direct sun at that time

I think this is a good idea, I've been worrying unnecessarily about the pacing but I should just do the race and try to maintain the pace I've achieved during my training block. So long as its not a 40+ second slower performance I wont be too fussed!