Despite sporadic January precipitation on the Plains, drought remained entrenched across the nation's mid-section. Meanwhile, abundant January precipitation fell from the Mississippi Valley to the Appalachians, as well as the mid-Atlantic States. Lowland flooding affected several areas, primarily from the central Gulf Coast northeastward into the Ohio Valley. However, very little moisture spilled across the mountains into New England or the southern Atlantic States. In the latter region, near-record warmth accompanied the dry conditions.
In fact, above-normal monthly temperatures prevailed in nearly all areas from the Plains to the East Coast, despite a late-month cold outbreak that resulted in the coldest weather in two years in parts of the Midwest and Northeast. January readings averaged more than 5°F above normal in much of the Southeast. In contrast, frigid weather blanketed the Intermountain region, while near- to below-normal temperatures covered the remainder of the West. Chilly weather that struck winter agricultural regions in California and Arizona at mid-month represented the area's most severe cold wave since a similarly timed event in mid-January 2007.