This is a common phenomenon which everyone suffer. First of all avoid frequent exposure to cold weather. If you can t avoid try wearing a woolen sweater or a jerkin n woolen monkey cap. In such conditions take e tablet of cetrizine 10mg at night for about 5 days n if u have stuffy nose tskr a decongestant tablet like tab medlar or tab hatric 2-3 times a day n try taking lemon juice with out ice as the vitamin c in it has anticold properties n boosts up ur immunity. If this problem still persists contact an Ent surgeon as u may be suffering from allergic rhinitis for which u have good medicines.