Thread away, but I hope no one feels they're too "slow" to post in the other running threads. There's a WIDE range of speed and distance posting there, and several of us who've used the threads for inspiration and advice as we increase our distances.

Remember that your HR will always be higher in the heat, all other things being equal. Your heart has to move more blood to your skin surface to cool it, and then move that blood faster to the rest of your body to get it cooled off.