SMITHTOWN, NY 11787 Weather Forecast & Current Conditions

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ISLIP, NY
Current Weather

9:56 AM EDT JUL 3, 2025
Broken Clouds
84°F
Feels Like: 85°F
Dewpoint: 63°F
Rel. Hum.: 49%
Visibility: 10 miles
Wind: NW at 8 mph
Pressure: 29.85 inches
Last 72 hours

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SMITHTOWN, NY 11787
Weather Forecast

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TODAY
Sunny. A slight chance of showers with isolated thunderstorms this afternoon. Some thunderstorms may produce gusty winds this afternoon. Highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 20 percent.
TONIGHT
Partly cloudy with scattered thunderstorms with a chance of showers in the evening, then mostly clear after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the upper 60s. Northwest winds 5 to 10 mph. Chance of rain 50 percent.
INDEPENDENCE DAY
Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph.
FRIDAY NIGHT
Mostly clear. Lows in the mid 60s. Northwest winds around 5 mph.
SATURDAY
Sunny. Highs in the mid 80s. Northeast winds around 5 mph, becoming south in the afternoon.
SATURDAY NIGHT
Partly cloudy. Lows around 70.
SUNDAY
Mostly sunny. Highs in the upper 80s.
SUNDAY NIGHT
Partly cloudy. Lows in the lower 70s.
MONDAY
Sunny. Highs around 90. Heat index values in the upper 90s.
MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 70s.
TUESDAY
Partly sunny. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.
TUESDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent.
WEDNESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 30 percent.

Visible Weather Satellite
SMITHTOWN, NY 11787
Infrared Weather Satellite
SMITHTOWN, NY 11787
NEXRAD Weather Radar
SMITHTOWN, NY 11787

ISLIP, NY 3 hourly weather forecast

weather forecast created  8:00 PM EDT  7/ 2/2025
Thursday
3 JUL 2025
SMITHTOWN, NY 11787 weather forecast Day 1, 0 hours 2 AM 72° 72° Partly Cloudy 0%

0% Thunder
( 2% severe)
SW   3 90% 69°
Low 70° SMITHTOWN, NY 11787 weather forecast Day 1, 3 hours 5 AM 71° 71° Partly Cloudy WNW   2 87% 67°
High 89° SMITHTOWN, NY 11787 weather forecast Day 1, 6 hours 8 AM 76° 77° Clear 0%

0% Thunder
( 1% severe)
NNW   2 74% 67°

Partly Cloudy



SMITHTOWN, NY 11787 weather forecast Day 1, 9 hours 11 AM 85° 86° Partly Cloudy NW   6 46% 62°
SMITHTOWN, NY 11787 weather forecast Day 1, 12 hours 2 PM 87° 88° Clear 19%
RAIN
>2 in
0% Thunder
( 27% severe)
SSW   10 45% 63°
SMITHTOWN, NY 11787 weather forecast Day 1, 15 hours 5 PM 85° 86° Partly Cloudy W   10 50% 64°
SMITHTOWN, NY 11787 weather forecast Day 1, 18 hours 8 PM 78° 80° Mostly Cloudy 20%
RAIN
<.01 in
0% Thunder
( 16% severe)
NW   7 67% 66°
SMITHTOWN, NY 11787 weather forecast Day 1, 21 hours 11 PM 74° 74° Partly Cloudy NW   6 79% 67°
Friday
4 JUL 2025
SMITHTOWN, NY 11787 weather forecast Day 2, 0 hours 2 AM 72° 72° Partly Cloudy 0%

0% Thunder
( 2% severe)
NNW   6 76% 64°
Low 68° SMITHTOWN, NY 11787 weather forecast Day 2, 3 hours 5 AM 69° 69° Clear NNW   7 76% 61°
High 85° SMITHTOWN, NY 11787 weather forecast Day 2, 6 hours 8 AM 73° 73° Clear 0%

0% Thunder
( 0% severe)
N   8 66% 61°

Clear



SMITHTOWN, NY 11787 weather forecast Day 2, 9 hours 11 AM 80° 80° Clear NNW   8 44% 56°
SMITHTOWN, NY 11787 weather forecast Day 2, 12 hours 2 PM 83° 82° Clear 0%

0% Thunder
( 1% severe)
NW   8 38% 55°
SMITHTOWN, NY 11787 weather forecast Day 2, 15 hours 5 PM 83° 82° Clear WNW   8 38% 55°
SMITHTOWN, NY 11787 weather forecast Day 2, 18 hours 8 PM 77° 79° Clear 0%

0% Thunder
( 1% severe)
WNW   6 52% 58°
SMITHTOWN, NY 11787 weather forecast Day 2, 21 hours 11 PM 73° 73° Partly Cloudy WNW   3 66% 61°

ISLIP, NY extended weather forecast

BAD DAY
BAD DATE
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Low 64° Low 62° Low 67° Low 69° Low 72°
High 85° High 83° High 86° High 86° High 82°
SMITHTOWN, NY 11787 weather forecast Day 3 SMITHTOWN, NY 11787 weather forecast Day 4 SMITHTOWN, NY 11787 weather forecast Day 5 SMITHTOWN, NY 11787 weather forecast Day 6 SMITHTOWN, NY 11787 weather forecast Day 7
Partly Cloudy
30% Rain
Clear
3% Rain
Clear
13% Rain
Partly Cloudy
28% Rain
Overcast
47% Rain
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