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Islip, NY Weather Forecast

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Islip, NY Weather Forecast

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Islip NY weather - Mostly Clear - 58°F
Mostly Clear
58°F
Updated 11:12 am
Feels Like 51°F
Humidity 50%
Wind NNE 13 mph
Barometer  30.45 in
Dew Point 40°F
Islip NY weather - Mostly Clear - 14°C
Mostly Clear
14°C
Updated 11:12 am
Feels Like 10°C
Humidity 50%
Wind NNE 21 km/h
Barometer  103.1 kPa
Dew Point 4°C
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Islip Weather Forecast

TODAY TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT
Islip, NY Weather - Today Mostly Sunny Islip, NY Weather - Tonight Partly Cloudy Islip, NY Weather - Tuesday Mostly Cloudy Islip, NY Weather - Tuesday Night Clearing Islip, NY Weather - Wednesday Mostly Sunny Islip, NY Weather - Wednesday Night Partly Cloudy Islip, NY Weather - Thursday Sunny Islip, NY Weather - Thursday Night Clear Islip, NY Weather - Friday Sunny Islip, NY Weather - Friday Night Mostly Clear Islip, NY Weather - Saturday Sunny Islip, NY Weather - Saturday Night Mostly Clear
Mostly Sunny Partly Cloudy Mostly Cloudy Clearing Mostly Sunny Partly Cloudy Sunny Clear Sunny Mostly Clear Sunny Mostly Clear
Hi: 61°FHi: 16°C
 Lo: 49°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 45°FLo: 7°C Hi: 59°FHi: 15°C
 Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C Hi: 59°FHi: 15°C
 Lo: 41°FLo: 5°C Hi: 59°FHi: 15°C
 Lo: 45°FLo: 7°C
POP = Probability of Precipitation.
Weather Outlook Updated: 522 AM EDT Mon Oct 19 2026 Islip, NY Weather - WeatherWorld.com

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Issued: 1049 AM EDT Mon Oct 19 2026

Key Messages

1) A noreaster is expected to remain south and east of the region thru the week. Some coastal impacts remain possible.


Discussion

... .KEY MESSAGE 1... Low pres was evident on water vapor east of Cape Hatteras this morning. This low is modeled to gradually deepen thru the week, and only slowly take a general northeast track thru the period.

The latest model trends and consensus keep the impacts to the local area low. The NBM now has mainly dry weather thru the week, with only 20-30 perc...