Anything up to 0C: freezing
10C and above: roasting
I ran this morning much later than usual (9:45 compared to 6ish) and the sun was out. Although it was only 12C I really felt it! My lungs were screaming at me after a while and I needed 3 little walking breaks in a 5k run. Wearing a cap certainly helped in keeping the sun and sweat out of my eyes but the long sleeved top was really a bad idea. Should perhaps have given my vest its first run out...
I'm actually hoping for a bit of rain in the Two Castles Run in a few weeks now!