Electric vehicles are everywhere now, but how do they actually hold up when the weather turns extreme? The honest answer: it's complicated, and cold is the real problem, not heat.

Heat and cold

A 2026 AAA study found that in 95-degree heat, EVs lose about 8.5% of their driving range compared to a mild 75-degree day. That's noticeable, but nothing compared to the cold. 

At just 20 degrees, EVs lost nearly 39% of their range in the same testing. 

Weather in your inbox

Forecast Location

Sign Up

By signing up you agree to the Terms & Privacy Policy. Unsubscribe at any time.

The reason is straightforward: Lithium-ion batteries rely on chemical reactions that slow down dramatically in cold temperatures. The battery has to work harder just to warm itself up before it can function efficiently. 

Simple habits help in both directions. Precooling or preheating the cabin while still plugged in, using heated seats instead of cabin heat in winter and scheduling charging to finish right before you leave are some suggestions to be more efficient with your charging.

Flooding and fire

Flooding and fire raise different concerns. Despite common fear, touching a flooded EV carries very low electrocution risk. 

Get More of Our News on Google

Set The Weather Company as a 'Preferred Source' to get quicker access to the news you value.

But submerged batteries, especially in saltwater, can develop a delayed problem: thermal runaway. 

This occurs when a battery cell overheats uncontrollably, hitting temperatures over 1,000 degrees. Furthermore, thermal runaway can occur weeks or even months after a flood, not just immediately.

Bubbles rising near a flooded EV can signal this process happening underwater and may carry toxic gases, so stay clear. 

Importantly, EV batteries generally don't ignite from heat alone. It typically takes an underlying fault, like physical damage or a short circuit, with extreme heat acting as a stressor rather than the direct cause.

Positives to EVs in weather

There's an upside too. EVs' added weight and instant torque can actually improve traction and handling in storms, and some models can power a home's essential circuits for several days during an outage. 

Extreme weather isn't kind to any vehicle, but understanding exactly how it affects an EV makes it far less mysterious.