Does the wind chill temperature affect my car or car battery?
Will my car be harder to start when the wind chill temperature is cold?
No to both questions. Your car and your car's battery are affected only by the actual temperature. Wind chill temperatures are a measure of the rate of heat loss from the human body. For a car left overnight, the temperature of the car is approximately the same as the surrounding air, so there would be no additional heat loss due to wind, hence no wind chill.
In general, morning temperatures are coldest on nights with little or no wind. Therefore, your car battery is more likely to fail on a night with little or no wind than a windy night.
This Question and Answer is courtesy of the National Weather Service, Gray, Maine
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