When temperatures rise, your windshield expands slightly. If there’s already a small chip or crack, the heat can cause it to spread. Parking in direct sunlight for extended periods can accelerate this process, leading to larger, more expensive damage. 

• Park in shaded areas or use a sunshade.
• Get small chips repaired before they spread.
• Avoid blasting the air conditioning on full power right away, as sudden temperature changes can worsen cracks.

Extremely high temperatures can sometimes cause minor warping of your windshield, leading to visual distortion. This can make objects on the road appear wavy or blurry, affecting your ability to drive safely. 

• Avoid parking in direct sunlight for long periods.
• If you notice distortion, have your windshield inspected for potential warping.
• How Cold Weather Affects Your Windshield

Cold weather has the opposite effect of heat—it causes your windshield to contract. If you already have a crack, the shrinking glass puts extra pressure on weak points, often making the damage worse. Ice and snow can also seep into tiny cracks, freezing and expanding, which speeds up the cracking process.

• Use a windshield cover or park in a garage when possible.
• Get any cracks or chips repaired before winter sets in.
• Never use hot water to melt ice on your windshield—it can cause the glass to crack.

Freezing temperatures can cause wiper blades to stick to the windshield, leading to tears in the rubber when you try to use them. If you’re using summer-grade windshield washer fluid, it may also freeze, leaving you without a way to clear off road salt and grime.

• Use winter-rated windshield washer fluid that won’t freeze.
• Lift wipers off the windshield when parking in icy conditions.
• Consider investing in winter-specific wiper blades.

If your windshield isn’t properly sealed, heavy rain can cause water to leak inside your car. Over time, moisture buildup can lead to mold, unpleasant odors, and even electrical damage.

• Check for signs of leaks, such as water stains or dampness on the dashboard.
• If you suspect a leak, have the windshield seal inspected and repaired.

High humidity and sudden temperature changes can cause your windshield to fog up. This happens when warm, moist air inside your car meets the cooler surface of the windshield, creating condensation.

• Use the defroster to regulate temperature and humidity inside the car.
• Keep the inside of your windshield clean, as dirt and residue make fogging worse.
• Crack a window slightly to help balance interior and exterior air temperature.
• How Wind & Hail Damage Your Windshield

7. Hailstorms & Impact Damage

Hail can be one of the most damaging weather events for auto glass. Even small hailstones can leave chips or cracks, while larger ones can completely shatter a windshield.

• Park in a garage or under a covered structure during storms.
• If caught in a hailstorm, pull over and find shelter instead of driving through it.
• Consider using a windshield cover during hail season for extra protection.

8. Wind-Blown Debris

Strong winds can send debris—such as rocks, tree branches, and dirt—flying into your windshield. This can cause chips, cracks, or scratches, especially if your windshield is already weakened by previous damage.

• Keep a safe distance from large trucks on windy days, as they can kick up rocks and debris.
• Inspect your windshield regularly for small chips and repair them before they spread.