From The Colorado Springs Gazette (Matt Steiner):
La Niña, the cooling of the tropical Pacific, causes mostly the opposite effects of El Niño. La Niña causes above average precipitation across the northern Midwest, the Northern Rockies, Northern California, and in the Pacific Northwest. Meanwhile, there is below average precipitation in the Southwest and Southeast. La Niña’s effects tends to be the more predictable of the two, and this year has been no exception, said Nolan Doesken, Colorado’s state climatologist. “Warmer than average has been dominating our conditions since the fall,” Doesken said. “We’re still in the first few months, so we don’t know how long it will persist.”