How Warming Winters Are Affecting EverythingEnlarge this image Illustrations by Cornelia Li for NPR Illustrations by Cornelia Li for NPRWinters are warming faster than other seasons across much of the United States. Are warmer winters affecting your job, business or recreational activities? Warmer winters are also affecting the fruits and vegetables that California sends around the country. \"Warmer winters will result in, usually, earlier emergence of adult mosquitoes, for example, that bite us earlier in the springtime. MOUNTAIN WESTThe most visible impact of warming winters in the Mountain West is on the forests.