CHICOPEE, Mass. (WWLP) - Frosty windshields return with below-freezing lows all this week. Frost forms when near freezing temps along with water molecules in the air freeze upon impact with surfaces like grass, concrete, and your windshield. Your car is made of glass and metal, which don't retain heat as well as concrete and asphalt. Police warn against idling cars to prevent thefts 7 Day Forecast This results in water only freezing on your car and nowhere else on certain nights.  Local News Headlines Westfield girl’s hot cocoa stand raised over $800 for Toys for Tots at 22News 25 years since six firefighters killed in Worcester Cold Storage fire Boston man charged after allegedly speeding towards officer, firearm seized Man charged with kidnapping after vehicle suspected in Chicopee shooting pursued by police WWLP-22News, an NBC affiliate, began broadcasting in March 1953 to provide local news, network, syndicated, and local programming to western Massachusetts. Watch the 22News Digital Edition weekdays at 4 p.m. on WWLP.com.