If you saw someone running outside in 45 degree Fahrenheit weather in shorts would you think they are strange?

I live in Chicago and the weather has been getting better (more warm outside). It is going to be about 40-50 degrees Fahrenheit this week. I feel like running outside but I don't like running in sweatpants and prefer shorts. If I wear a sweatshirt and shorts in this low of temperature would people think I am insane?