Even in regular summer, a long stretch of black asphalt on a highway plus unseasonably warm temps can be a problem.
My brother had a crown vic that was an otherwise great car but the big fat V8 plus his love of driving with the AC on and his driver window partially down (why??!!!!) would freeze his lines and put the compressor in overdrive.
I'll give him a break since he was a teenager at the time but I shut off the thing for 10mins and whacked his hand away when he kept insisting on putting it back on every 2min. Once I stopped seeing heavy drip in the rear view I ran it on vent only until it felt strong again, then switched the compressor back on at 78° till it stabilized. Like magic.... Problem solved.