🇺🇸 Rochester vs 🇺🇸 San Francisco

Rochester in southeastern Minnesota is home to the Mayo Clinic, one of the world's leading medical centers. The city in the Root River valley has a full humid continental climate that rivals Minneapolis for cold winters. The valley terrain creates cold air pooling while the internationally diverse population (due to Mayo) creates demand for indoor climate control year-round.

San Francisco's climate is shaped by its position on a peninsula surrounded by the Pacific Ocean and San Francisco Bay. The coastal fog (Karl the Fog) rolls in through the Golden Gate each summer afternoon, keeping temperatures mild year-round. The city has dramatically different microclimates — the Sunset District fog-bound while the Mission basks in sun on the same day.