7-Day Forecast Summary
7-Day Detailed Weather Forecast for Islip
Overnight |
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Temperature: 58°F Wind Speed: 8 mph Wind Direction: SE Forecast: A chance of rain. Mostly cloudy. Low around 58, with temperatures rising to around 60 overnight. Southeast wind around 8 mph. Chance of precipitation is 40%. |
Sunday |
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Temperature: 69°F Wind Speed: 8 to 13 mph Wind Direction: SE Forecast: Rain. Cloudy, with a high near 69. Southeast wind 8 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible. |
Sunday Night |
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Temperature: 62°F Wind Speed: 8 to 13 mph Wind Direction: W Forecast: Periods of rain before 8pm, then periods of rain and a slight chance of thunderstorms. Cloudy. Low around 62, with temperatures rising to around 64 overnight. West wind 8 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Monday |
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Temperature: 68°F Wind Speed: 12 to 15 mph Wind Direction: NE Forecast: A chance of rain before 8am. Mostly cloudy. High near 68, with temperatures falling to around 66 in the afternoon. Northeast wind 12 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
Monday Night |
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Temperature: 58°F Wind Speed: 10 to 15 mph Wind Direction: NE Forecast: A chance of rain showers after 2am. Cloudy, with a low around 58. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
Tuesday |
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Temperature: 66°F Wind Speed: 17 mph Wind Direction: NE Forecast: A chance of rain showers. Mostly cloudy. High near 66, with temperatures falling to around 64 in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
Tuesday Night |
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Temperature: 53°F Wind Speed: 17 mph Wind Direction: NE Forecast: A chance of rain showers before 8pm. Cloudy, with a low around 53. Chance of precipitation is 30%. |
Wednesday |
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Temperature: 66°F Wind Speed: 18 to 22 mph Wind Direction: NE Forecast: Mostly cloudy, with a high near 66. |
Wednesday Night |
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Temperature: 53°F Wind Speed: 20 mph Wind Direction: NE Forecast: A slight chance of rain showers after 2am. Mostly cloudy, with a low around 53. |
Thursday |
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Temperature: 65°F Wind Speed: 22 mph Wind Direction: NE Forecast: A chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%. |
Thursday Night |
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Temperature: 51°F Wind Speed: 20 mph Wind Direction: NE Forecast: A chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 40%. |
Friday |
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Temperature: 66°F Wind Speed: 20 to 23 mph Wind Direction: N Forecast: A chance of rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 40%. |
Friday Night |
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Temperature: 53°F Wind Speed: 15 to 21 mph Wind Direction: N Forecast: A chance of rain showers. Mostly cloudy, with a low around 53. Chance of precipitation is 40%. |
Saturday |
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Temperature: 68°F Wind Speed: 14 to 17 mph Wind Direction: N Forecast: A chance of rain showers. Mostly cloudy, with a high near 68. |

