The main weather concern is Sunday night's round of showers and thunderstorms, some of which could become strong with damaging wind gusts and heavy rainfall. Conditions improve dramatically beginning Monday as cooler and less humid air settles over the region.

A beautiful stretch of weather is expected Tuesday and Wednesday with sunshine, comfortable temperatures and lower humidity. Attention then turns to late week, when a stronger storm system may bring increasing chances for showers and thunderstorms Thursday into Friday before warm summer weather returns for next weekend.

An increasingly unsettled night is expected across Long Island. Showers and thunderstorms will become more widespread through the evening and overnight hours as a cold front moves through the region. Some storms may become strong, particularly during the evening, with the potential for damaging wind gusts, frequent lightning and brief torrential downpours.

While widespread flooding is not anticipated, localized ponding of water on roads and poor-drainage flooding may occur where heavier rain develops. Temperatures will remain mild, only falling into the lower to mid-60s. If you have evening plans, be prepared for rapidly changing weather conditions.

A few lingering showers may be around early in the morning, especially across eastern Long Island, but skies will gradually clear through the day. Afternoon temperatures will reach the upper 70s to low 80s with noticeably lower humidity.

The second half of the day looks excellent for outdoor activities, beach trips and travel. A refreshing northwest breeze will make it feel significantly more comfortable compared to recent days.

Mostly clear and comfortable, with overnight temperatures dropping into the upper 50s to low 60s. Excellent sleeping weather returns across the Island.

Sunny and pleasant, with highs in the upper 70s to low 80s. Humidity remains comfortable and conditions will be nearly ideal for outdoor plans. Beach and boating conditions should be favorable, although ocean swimmers should continue to pay attention to surf conditions.

Mostly sunny and seasonably warm, with highs around 80. Humidity remains manageable and no significant weather concerns are expected. A great day for outdoor recreation, golf, boating and beach activities.

Partly sunny, warmer and becoming more humid, with highs reaching the low to mid-80s. A chance of showers develops during the afternoon as a stronger weather system approaches from the west.

While much of the day may remain dry, confidence is increasing that a more active weather pattern develops late Thursday into Thursday night. Outdoor plans later in the day could be impacted by showers and potentially thunderstorms.

Partly sunny, warm and somewhat humid, with highs in the mid- to upper 80s. Scattered showers remain possible, especially during the first half of the day. Forecast details remain somewhat uncertain as of Sunday evening's forecast, but a stronger storm system approaching from the west could bring additional showers and thunderstorms.

Anyone with outdoor holiday plans should monitor forecast updates through the week as confidence increases regarding timing and impacts.

Sunny and warm, with highs in the upper 80s. Humidity levels appear manageable and conditions look favorable for beaches, boating, outdoor events and other summer activities.

A high risk of rip currents continues at Long Island ocean beaches. Dangerous rip currents can occur even for experienced swimmers. Swim only at guarded beaches and always follow lifeguard instructions.

In addition, minor coastal flooding remains possible around times of high tide, particularly in vulnerable South Shore back-bay locations. Minor flooding of the most flood-prone roadways and shoreline areas may occur during the evening high tide cycle.