Spent 3 weeks of June in the US, so hot or warm there. But in Scotland we've had spells in the 70's and even into the low 80's for a few days. But mostly it's in the 60's as usual.
As for F vs C. I've had to think in celsius as well. Unless the temp is extreme I know roughly what the temp is in both F and C. 0 is 32, 10 is 50, 15 is 60, 21 is 70, 30 is 86, body temp is 37.