What happens to Niagara Falls during a storm?

Yes, the falls get wild during a storm, but it's not some apocalyptic event. If there's heavy rain or high winds, the mist gets blown sideways and you'll get soaked even from the observation decks. The boat tours (Maid of the Mist or Hornblower) will likely shut down if winds are over 25-30 mph or lightning is nearby, so check their website or call before heading out. The water volume doesn't change much, but the spray and roar get intense, making it a totally different, raw experience.

If you're okay getting drenched and dealing with slippery paths, it's actually a cool time to go because crowds thin out. But no, the falls don't flood or stop—they're fed by the Great Lakes, so a storm barely registers on the flow rate. Just wear a rain jacket over your clothes (not a poncho, it'll rip), and avoid the Cave of the Winds boardwalk if they close it for lightning. Honestly, unless you're a storm chaser, a drizzle is fine, but a full thunderstorm is more hassle than thrill.