VIDEO: Fire crews welcomed the rain falling across southern Arizona as several fires burned amid dry conditions. The US Forest Service, the agency monitoring the Knob Hill Fire, said the rain that began Wednesday, Feb. 14, has given crews a much-needed break. The storms are bringing cooler temperatures and higher humidity. Higher humidity helps the dry vegetation become saturated, meaning there is less chance for the fuel to ignite. Although the rain is a good thing, the Forest Service said it’ll bring temporary relief. The agency is afraid the amount of rain won’t make a dent against the dry conditions they’ve been battling for months.