Spring and Summer Weather Outlook for Various Regions in the US.

The Weather Channel has released its outlook for April through June, predicting that much of the country will be warmer than usual by May, with June's heat concentrated in the nation's midsection. Lingering effects from a weaker polar vortex and a vanished La Niña are two of the factors in play. Spring temperatures may be stubbornly cool in parts of the West, but should recover nicely by May over much of the rest of the country. Meanwhile, a generally warmer-than-average April through June is forecast from the Plains across the South and Midwest into the mid-Atlantic states.