Also, not sure what you consider cold, but fall is here. It has ben raining Brussels for 4 days, finally sunny today with he rain to return again tomorrow, and the highs have been forecast as 15-16°C, but in reality struggle to get there for more than an hour or so, and generally the temps are 10-12°, and overnight down to 8° with the next days getting even cooler. It'll be a bit warmer where you are, but not by much. And, we've passed the Fall equinox, so the days are rapidly shortening...no worries, put on a jacket, turn on the lights, and go for it...because summer is pleasant and the days are ridiculously long. Safe travels!