The numbers here tell you how hot and cold the weather usually is in Minneapolis, Minnesota during each month of the year. The average high and low temperatures are listed below monthly and annually for Minneapolis, in both degrees Fahrenheit and Celsius. Maximums and minimums are only part of the temperature picture.
A rooftop antenna, while well-suited for receiving television signals, can also draw lightning in inclement weather. A lightning strike to a TV rooftop antenna can be dangerous, both to the antenna as well as to the electronic equipment connected to it.
Remember that, contrary to the myth, lightning doesn't always strike the tallest or most conductive object - it can strike anywhere. Stay away from shorelines, railroad tracks, and metal fences which could bring current from a 'far-away' lightning strike to you.