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Partly Cloudy Night
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A few showers overnight, but sun gradually develops with lower humidity Friday

Mostly cloudy with a few light showers possible into early Friday morning, but sunshine develops with a comfortable feel for most of the day.

Matt Hammer

Sep 10, 2026, 9:54 PM

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Islip Information

Islip Information

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

The humidity continues to lower overnight, and it begins to feel more comfortable under a mainly cloudy sky into early Friday morning. There is a chance for a few showers into early Friday morning, mostly before 7 a.m. Most of the time will be dry with just more clouds than clear sky. Low temperatures into the morning will be in the mid- to upper 60s.

9-11 CEREMONIES FORECAST

It will be cloudy to start the morning, but clouds will gradually give way to more sunshine through the morning, with a mostly sunny sky developing into the afternoon. The day will end up very nice weather-wise, with low humidity and highs in the mid- to upper 70s paired with that developing sunshine.

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MARINE

There will continue to be a high risk of rip currents at the Atlantic Ocean beaches through tonight and a moderate rip current risk, but improving water conditions overall into Friday.

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Long Island Rip Currents

EXTENDED FORECAST

OVERNIGHT: Mostly cloudy with a few light rain showers possible. The humidity will continue to lower into Friday morning, too. Low temperatures will be in the mid- to upper 60s early Friday morning. Wind: West-northwest 5 to 15 mph.

FRIDAY: 9-11 | START OF ROSH HASHANAH -- There is a very small chance for an early morning rain shower before around 7 a.m. Otherwise, clouds gradually give way to a mostly sunny sky with low humidity and high temperatures around 78 degrees. WIND: north-northwest 5 to 15 mph. UV INDEX: 6 (high). BOATERS: No advisories, but there will be a moderate rip current risk along the South Shore. Lows in the upper 50s to lower 60s into Saturday morning.

SATURDAY: Sun and clouds to start. Becoming mostly cloudy with showers arriving late at night. Highs around 76 degrees. Scattered showers will be possible at night. Lows near 65 degrees.

SUNDAY: Rain likely in the morning, with gradual improvements throughout the day. Highs around 79 degrees. Lows near 65 degrees.

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MONDAY: Mostly sunny and warm with highs around 78 degrees. Lows near 64 degrees.

TUESDAY: Mostly sunny with highs around 77 degrees. Lows near 66 degrees.

WEDNESDAY: Partly sunny with a pop-up rain shower chance. Highs around 80 degrees. Lows near 67 degrees.

THURSDAY: Sun and clouds. Chance of a few evening showers. Highs around 78 degrees. Lows near 65 degrees.

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