Has it been cold enough for you this winter? Temperatures have certainly been low and the wind chill makes some days feel even colder. Wind chill is how cold the air feels on your skin, resulting from the combined effect of low temperatures and wind. Fortunately, because plants don't have skin, they aren't affected by wind chill the same way we are. If the temperature is 40°F, and the wind chill makes the air feel like 30°F, the plant still behaves as if it is 40°F.