Overnight across the region remains muggy and warm, with temperatures settling into the mid-to upper 70s under clear to partly cloudy skies.

Heading into Monday morning, temperatures quickly soar back into the upper 80s to near 90, pushing heat index values into the mid-90s. While much of the daytime hours stay dry, an approaching cold front from the west brings a threat of strong to severe thunderstorms late Monday afternoon into the evening, bringing risks of localized damaging wind gusts, frequent lightning and heavy downpours that could snarl the evening commute across western Connecticut.

A stray shower or storm remains possible early Tuesday morning before skies clear out and temperatures settle into the mid-80s.

Wednesday starts off mostly fair before a cold front dropping down from Canada brings another round of rain and thunderstorms late Wednesday into Thursday. Once that front clears, a refreshing cooldown arrives just in time for the end of the week, with sunshine and low humidity bringing pleasant temperatures in the upper 70s to low 80s starting Friday.