A warm and increasingly summerlike pattern takes hold across Long Island through midweek, with the peak arriving on Wednesday. Temperatures are expected to surge into the upper 70s and 80s inland, putting Islip within reach of a new daytime record high. Coastal areas will stay a bit cooler thanks to the ocean breeze, but it will still feel notably mild for April.

Skies will feature a mix of sun and clouds on Wednesday, though the atmosphere becomes slightly more unsettled late in the day. A few evening showers or even a thunderstorm are possible, but much of the day remains dry and warm.

The mild stretch continues into Thursday and Friday, with a blend of sun and clouds and seasonably warm temperatures in the 60s and 70s. Most of this time stays dry, offering a favorable window for outdoor plans.

Changes begin to arrive late Friday as a cold front brings scattered showers into the evening and overnight hours. Behind the front, temperatures ease back into the weekend, with highs cooling into the low 60s by Saturday under partly sunny skies.

Another system approaches Sunday, bringing the chance for additional showers Sunday night into early Monday. This will be followed by a stronger cold front, leading to a more noticeable drop in temperatures to start next week, with highs falling back into the 50s.

Overall, enjoy the midweek warmth while it lasts; more typical spring conditions return by the weekend, with a cooler pattern setting in early next week

Tonight: Partly cloudy, chance for a passing shower. Patchy Fog, with a low around 55. Southwest wind 6 to 10 mph.

Wednesday: Sun and clouds. Warm. A few late-day showers, with a chance of thunderstorms, with a high near 80. 83 to 88 for western Nassau County, with 60s for the East End. South wind 5 to 15 mph.

Wednesday Night: A few showers and thunderstorms before 11 p.m., then a chance of spotty showers. Mostly cloudy, with a low around 55. Southwest wind 5 to 10 mph.

Thursday: Partly sunny, with a high near 76. South wind 5 to 15 mph.

Thursday Night: Mostly cloudy, with a low around 55.

Friday: Scattered afternoon showers. Partly sunny, with a high near 70.

Friday Night: A few scattered showers. Mostly cloudy, with a low around 49.

Saturday: Partly sunny, cooler with a high near 62.

Saturday Night: Mostly cloudy, with a low around 49.

Sunday: Scattered showers. Mostly cloudy, with a high near 63.

Sunday Night: Scattered showers. Mostly cloudy, with a low around 42.

Monday: Mostly sunny, with a high near 54.