'Blast of arctic air' on its way to Chattanooga

Frost collects on a car windshield in the East Brainerd area recently. Forecasts call for lows in the teens this weekend.

Day-by-day forecast

* Thursday: Highs in mid-30s, lows in mid-teens * Friday: Highs in mid-30s, lows in 20s * Saturday: Highs in low 40s, lows around 11* Sunday: Highs around 30, lows in upper teensSource: National Weather ServiceView our in-depth weather forecast.

Cold weather tips

Winterize your carCheck or have a mechanic check the following items on your car: * Ensure antifreeze levels are sufficient to avoid freezing. * Battery and ignition system should be in top condition and battery terminals should be clean. * Be sure heater and defroster work properly. * Check oil for level and weight. Heavier oils congeal more at low temperatures and do not lubricate as well. Winterize your house * Insulate pipes with insulation or newspapers and plastic and allow faucets to drip a little during cold weather to avoid freezing.