I don't do monthly totals, but I'm always down for a chat about the infernal heat of southern summers lol!
I've been running outdoors here in West-Central FL summers for 20-some years. Until this summer, I've always done my mid-week runs after work because there just isn't enough time for me to get adequate sleep AND run before when I needed to drive to work in the morning. Average evening run weather here in summer is either no rain, full sun, 60-70% humidity and heat indices over 100*, or dangerous thunderstorms. But this summer I've been working from home, so I've done nearly all of my mid-week runs in the early mornings before sunrise, when it's around 80* and 100% humidity, but no sun. WHAT A DIFFERENCE!!! Usually by mid-August, the cumulative heat stress has really hurt me, but this year I feel so good! I've long thought that for me, it's actually the heat of the sun that punishes, not the humidity, and I think this summer is proof of that. In real time, I can see it via HR on long runs: HR stays in the high 2/low 3 zones right up until the sun is high enough to hit me; once the sun is on me, it's a struggle and lots more walking than running to keep it out of 4. I am not looking forward to getting up before 4am to get in 12 miles this weekend, but I know it'll be worth it to avoid heat stress. And there's actually a hope of cooler weather as we get toward the end of Sept...