Overview
- Large parts of the UK and U.S. enjoyed an unusually warm, sunny weekend, with records or near-record highs from Chicago and the Twin Cities to Kansas City and the Mid-Atlantic.
- Forecasters expect a fast-moving front to bring a rapid cooldown Sunday into Monday, with evening and overnight thunderstorms and gusty winds possible in corridors including the D.C. area and the Ohio Valley.
- Chicago and surrounding areas tumble roughly 30 degrees by Sunday with scattered showers, while Louisville’s late-Sunday storms could produce damaging winds and hail before much cooler air arrives Monday.
- Northern New England faces several inches of wet, accumulating snow Sunday into Monday—especially across central and northern New Hampshire—while southern New England trends mainly rain with brief wintry mix and localized Monday night squalls.
- The UK turns cooler and unsettled from Monday under a northwesterly flow, with wintry showers or hill snow likely in northern and upland areas such as the Scottish Highlands, Lake District, Pennines and North Wales, before conditions moderate later in the week.