Can't comment on the paint because I paint in a space with Central Heat and Air but outdoors around here we've been 36C or above almost everyday for a few weeks - and more to come. Yeah, paint dries fast here when priming with spray primer outside this time of year - like minutes versus an hour or more. I guess my version of the problem is an incandescent lamp I use on my paint table as one source of light - it will dry paint a bit fast on my paint holding surface if I leave it directly under the lamp.
Thankfully, so far, we've had decently cool nights to counter the hot days - gets pretty bad when it stays real warm over night.