I live in Milwaukee and have 2 slider-off rigs waiting patiently for the temperature to waft above absolute zero.
Uncle owns a radio station. I jump off the FM tx tower. Been jumping it every time i'm here. The tower is ~360' wire-guyed. I have not climbed past the torture-aparatus looking FM transmitting device near the top. Outside climb. Standard 120 degree sections. Cables have about 70' between them, not a dead calm green kind of jump, but it's an A. And barring electrical storms and landing area constraints, I have yet to meet a tower that could not be jumped in any temperature or wind.