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STORM WATCH: Showers this morning giving way to sun, warm and humid weather for Long Island

Most rain overnight is light to moderate, but a couple of downpours or a brief thunderstorm will be possible through around mid-morning Monday.

Rich Hoffman

Aug 17, 2026, 5:31 AM

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Cloudy skies and scattered showers will greet us this morning, so watch out for some wet roads during the morning commute. The good news is the weather improves as we head through the day. Those clouds and showers will gradually give way to a mixture of sun and clouds this afternoon. I can’t completely rule out an isolated shower, but most of us will end the day much drier. High temperatures will reach the 80s, and you’ll notice a bit more humidity in the air.

Long Island Today forecast

For tonight, we’ll have partly to mostly cloudy skies with generally quiet weather. Some patchy fog could develop toward Tuesday morning, especially in the usual fog-prone locations. Overnight lows will settle into the upper 60s and lower 70s.

Long Island tonight forecast

Tuesday is looking like a nice summer day with mostly sunny skies and warm temperatures. Highs will climb into the mid-80s with a little humidity around. Wednesday looks good as well, with plenty of sunshine and temperatures around 86 degrees. It will be warmer and a bit more humid, with heat index values potentially approaching 90 degrees during the afternoon.

Changes arrive Thursday as clouds begin to increase. Expect partly sunny skies overall, but we’ll be tracking some showers and thunderstorms developing, especially during the afternoon. High temperatures will remain in the 80s. So, after this morning’s damp start, we have a stretch of warmer and mostly dry summer weather before our next chance of rain arrives Thursday.

FUTURECAST

Here is a look at the latest future radar for Long Island that shows the latest projection of the rain today and improving weather on the way.

BOAT AND BEACH

Rougher conditions for boaters today. This also includes a high risk of rip currents along the South Shore beaches through tonight. Anyone heading to the beach should check the latest rip current statements before getting in the water. Check out more of the local beach weather forecast and tides here.

Long Island Rip Currents

Long Island 10 day forecast

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