🇺🇸 Nashua vs 🇺🇸 San Francisco

Nashua at the Massachusetts border is New Hampshire's second-largest city on the Merrimack and Nashua Rivers confluence. Its southern position makes it the warmest major city in New Hampshire with somewhat less extreme winters than cities farther north. The Nashua River corridor provides cooling.

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.