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Comfortable and dry evening on Long Island; tracking rain chances into next week

It is still beautiful outside, with more nice weather on Wednesday. There will be a few showers late in the week and more rain by Sunday.

Matt Hammer

Sep 15, 2026, 4:06 PM

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Islip Information

Islip Information

Islip, New York • Climate data: Islip MacArthur Airport (ISP)
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THIS EVENING AND OVERNIGHT

Hopefully you had an opportunity to enjoy today's great weather! It is still nice and dry under a mostly clear to partly cloudy sky this evening, with temperatures mostly in the 60s. Enjoy.

It will stay partly cloudy and comfortable overnight with low humidity. It will feel cool again into the early morning, with most low temperatures across Long Island in the mid- to upper 50s. A few spots in and around the Pine Barrens and the Hamptons could briefly drop into the 40s early Wednesday.

NEXT RAIN CHANCES

If there is a shower Wednesday, it would be incredibly quick and isolated. We are still looking at a better chance for just a few showers Thursday night into early Friday morning. The best next chance for steady rain will arrive on Sunday. Here is the latest Long Island futurecast below, showing the hour-by-hour progression of our hyperlocal weather conditions.

MARINE AND TIDES

Water conditions locally on the Atlantic Ocean and Long Island Sound will stay pretty calm through Wednesday.

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Long Island Tides

Babylon, NY [8515421]

Long Island tide predictions for today and tomorrow

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Tide predictions and recent observations are provided by NOAA CO-OPS. Tide heights are in feet above mean lower low water (MLLW). Many subordinate stations provide tide predictions but do not report live water level, temperature or pressure observations.

EXTENDED FORECAST

TONIGHT: Partly cloudy and comfortable with lows in the mid- to upper 50s. There can once again be a few upper-40-degree temperatures in and around the Pine Barrens and the Hamptons. Wind: Southeast to southwest 5 to 10 mph.

WEDNESDAY: A mix of sun and clouds with highs around 75 degrees. The humidity will start to increase slightly, but it will still feel nice. UV INDEX: 7 (high). Wind: southwest 5 to 15 mph. Lows near 63 degrees.

THURSDAY: A mix of sun and clouds and it will feel a bit more humid. Highs around 79 degrees. A passing rain shower or two is possible in the afternoon, but there will be a better chance for a few widely scattered rain showers overnight into early Friday morning. Lows near 66 degrees.

FRIDAY: Sun and clouds. Highs around 80 degrees. Lows near 58 degrees.

SATURDAY: Sun and clouds. Highs around 72 degrees. Lows near 60 degrees.

SUNDAY: Mainly cloudy with a few breaks of sun early. Periods of rain are looking more likely. Outdoor plans may be impacted by rain. Highs around 77 degrees. Lows near 61 degrees.

MONDAY: Mostly cloudy with scattered rain showers. Highs around 72 degrees. Lows near 62 degrees.

TUESDAY: FALL BEGINS AT 8:05 PM -- Mostly cloudy with a passing rain shower. Not a washout. Highs around 65 degrees. Lows near 57 degrees.

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