How do you keep a windshield from frosting over overnight?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
Cover the windshield overnight, park under cover or facing east so the morning sun helps, or stand the wipers up so they do not freeze to the glass. A fitted cover or even a folded blanket keeps frost from forming on the glass. Lifting the wipers is a separate question, but it keeps the blades from bonding to a frosted windshield.
How to prevent ice on a windshield overnight
- Lay a fitted windshield cover, a sheet, or a folded blanket over the glass before nightfall.
- Park in a garage or carport when you can, or under a tree canopy that traps warmth.
- Face the car east so the morning sun reaches the windshield first.
- Stand the wipers up so they do not freeze to the glass overnight.
Do windshield covers work?
Yes. A cover keeps frost from forming on the glass by blocking the cold dew from settling on it. A fitted cover is easiest, but a folded blanket or sheet works in a pinch. Shake off any moisture before you store it, so it does not freeze into a stiff sheet for the next morning.
Lifting the wipers is a separate step
Standing the wipers up keeps the blades from freezing to the glass, but it does not stop frost from forming on the windshield itself. It is a separate question from covering the glass. See our guide on lifting wipers when it snows.
If frost does form, warm the glass gradually with the defroster before you scrape, and never pour hot water on it. See our guide on defrosting a windshield.
More questions about frost overnight
Do windshield covers work?
Yes. A cover blocks the cold dew from settling on the glass, so frost does not form overnight. A fitted cover is easiest, but a folded blanket or sheet works too.
How do you stop frost on car windows?
Cover the glass, park under cover or facing east, and stand the wipers up. The cover stops frost from forming; lifting the wipers keeps the blades from bonding to the glass.
Should I lift my wipers to stop frost?
Lifting the wipers keeps the blades from freezing to the glass, but it does not stop frost from forming on the windshield. Cover the glass for that. See our guide on lifting wipers when it snows.
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