Woke up at 6, looked out, saw dark gray, like lowering clouds. Rain on the way? Looked at the temp: 70F. Looked at radar and humidity: no storms on the way, humidity around 60%, no excuses. Running was a little sweatier than earlier, but not bad.
As I might have said here, my wife and I trained for a long-distance 3-day relay race in the 90s, run in upstate Michigan, and heat, humidity and hills were part of it although neither of us old folks were assigned legs of more than 4 miles or so. So we trained in the heat and tackled hills in a state park nearby in Indiana. I wish I could regain that stoic attitude to running weather.
An annual pass to that park is about $45 for out of staters. I'm considering it.