After a summerlike burst of heat on Wednesday that pushed temperatures into the 80s and set new daily records across parts of Long Island, a more unsettled pattern begins to take shape overnight.

Tonight, skies turn partly to mostly cloudy with a chance of scattered showers and thunderstorms, especially across eastern Long Island and along the North Shore. It will remain mild overnight, with temperatures holding well above average.

Thursday brings another unseasonably warm day. Highs climb into the upper 70s to near 80 degrees for many, though some coastal spots may stay in the upper 60s. The day is expected to stay mainly dry, with a mix of sun and clouds and increasing cloud cover later in the afternoon and evening.

By Friday, the next system approaches. Scattered showers are possible, mainly during the afternoon and evening hours. While it will not be a washout, it is the one day to keep an umbrella nearby heading into the weekend.

A cold front moves through late Friday, ushering in a cooler air mass. Weekend temperatures fall back into the upper 50s to low 60s under partly to mostly cloudy skies. Conditions will feel more typical for April, with a comfortable but noticeably cooler pattern settling in.

Rain chances return Saturday night into Sunday as the cooler air lingers. Another stronger cold front is expected Sunday night into early Monday, bringing a more pronounced drop in temperatures.

Early next week will feel significantly cooler, with highs ranging from the 40s to low 50s, well below average for late-April. Dry weather is expected to dominate through much of the week, with a gradual warming trend returning by Wednesday. Even so, temperatures may remain slightly below average heading into next weekend.