This winter when I finish my run before dawn and the temperature hasn’t been above freezing for days I’ll think “now I can’t wait for summer.” It turns out that I’m a fickle bitch. And that the temperature every day should be 45* F in the morning for runs and 85* F in the afternoons for cannon ball related activities.

I couldn't do it this summer. I love running on my lunch break, but it's been over 100f so many days this summer that I completely fell off. I'll start up again soon now that it should begin cooling down hopefully

It's really what you're used to. When it gets above 21°C here (70°F) in the UK it tends to get very humid and sticky.

Also we're not acclimatised to it. We're currently "enjoying" temps over 27°C (80°F) this week after a much cooler month. This is not typical for September. The nights have been very warm too. I've been getting home after a run the last few days and making a small puddle on the floor tiles.

Looking back, most of my personal best paces have been in the early autumn or spring.

What's the climate where you live?

I never really liked winter until about 4 or.5 years into running. Now I don't mind it at all. But late fall has really become my favorite season.