I know bike tires will lose pressure in colder seasons because the air temp causes the pressure to drop, but is the inverse true? Does bike tire pressure go up in summer due to heat?
If so, do I need to deflate the tires a bit in summer? Do bike tires ever explode because of a temperature change?
Yes, they can gain or lose pressure as the weather changes.
That said, as long as they’ve been filled within their specs, they’re relatively unlikely to explode even with significant swings if they’re just sitting there.
That said, it’s still a good idea to check your pressure at the start of every day before you ride and adjust accordingly: Too much or too little pressure can cause all sorts of problems from pinch flats to premature wear to blow outs.