We just went through a week of mid/upper 30°Cs, normal for this time is about 21°C. My grader's A/C powers out at about 30°C. My daughter has just gone through mid/upper 40°C
I hope your daughter found the low to mid 40s less tiring than I do these days. I commiserate with her. She needs to keep up the water and ignore anything alcoholic - damned hard when it is that warm