Hottest would be 49°C in Marrakech, in the middle of August. I remember Moroccans talking about how hot it was, and a big thunderstorm broke that evening with torrential rain.
Coldest would be at home in the UK. Probably the coldest I’ve experienced would be about -7°C, that’s pretty extreme where I am though and it would be the night time temperature. I remember a few years ago going clubbing in winter and someone robbed my coat, I had to walk home at 3am in about -3°C with my friends trying to keep me warm. Not fun.