I run so much better when it's cooler, but I still end up absolutely drenched in perspiration. Always. No matter how cold it is outside. That is weird.
I run in the mornings, but I run better and faster in the afternoons. Not really possible during the week though. It means that my longer runs at the weekend are mostly faster than my standard 4-5 k morning runs. Somehow that seems odd!
It can be very dark at 6am and street lights don't always help. The trees still have all their leaves and obscure some of the street lamps. The common I run across is pitch black if there is no moon and although it is always possible to see a little way ahead I feel I am hurtling into the unknown sometimes. Time for a headlamp?
My glasses steam up - this is not conducive to fast running in the dark.