Summer Chill

We've had a cold snap recently in the Ohio Valley-- temps in the 70s in July! I travelled to Minneapolis last weekend and it was about 10 degrees cooler than that! I'm used to getting up and throwing on an easy dress in the summer which obviously couldnt be done. Luckily, this jacket and pinstripe pants keep me warm -- but still looking at least some sense of summer!

I know some areas of the country, the "normal" summer temperatures are in the 60s and 70s. I'm curious if we have any readers in cooler summer climates --if so how do you dress and incorporate a summer wardrobe when the air still has a chill? Am I relatively close?