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Smithtown NY Weather - Mostly Cloudy - 66°F
Mostly Cloudy
66°F
Updated 8:05 am
Feels Like 66°F
Humidity 75%
Wind NNE 3 mph
Barometer  29.95 in
Dew Point 58°F
Smithtown NY Weather - Mostly Cloudy - 19°C
Mostly Cloudy
19°C
Updated 8:05 am
Feels Like 19°C
Humidity 75%
Wind NNE 5 km/h
Barometer  101.4 kPa
Dew Point 14°C
Smithtown, NY Weather and Current Conditionssmithtown ny weather forecast

Smithtown, NY Weather Forecast

Smithtown New York WeatherSmithtown, New York Weather Weather Forecast
14 day API forecast for Smithtown, New York. Note. The 7-day weather forecast for Smithtown, NY is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Smithtown, NY Weather Forecast Dated: 805 AM Sun Sep 06 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.

Sunday, September 6, 2026

Mid-Morning
Smithtown Weather - 2026-09-06 - Morning - Light Rain
68°F 20°C
Light Rain
Mid-Afternoon
Smithtown Weather - 2026-09-06 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-06 - Evening - Overcast
71°F 22°C
Overcast
Pleasant near 72°F 22°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure.

Monday, September 7, 2026

Mid-Morning
Smithtown Weather - 2026-09-07 - Morning - Sunny
69°F 20°C
Sunny
Mid-Afternoon
Smithtown Weather - 2026-09-07 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-07 - Evening - Sunny
75°F 24°C
Sunny
Comfortable with temperatures reaching 79°F 26°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the NW to the NNW at 5 mph 8 km/h.

Tuesday, September 8, 2026

Mid-Morning
Smithtown Weather - 2026-09-08 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-08 - Afternoon - Partly Cloudy
82°F 28°C
Partly Cloudy
Early-Evening
Smithtown Weather - 2026-09-08 - Evening - Overcast
76°F 25°C
Overcast
Quite warm around 82°F 28°C, overcast in the morning, partly cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.

Wednesday, September 9, 2026

Mid-Morning
Smithtown Weather - 2026-09-09 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-09 - Afternoon - Partly Cloudy
78°F 25°C
Partly Cloudy
Early-Evening
Smithtown Weather - 2026-09-09 - Evening - Overcast
75°F 24°C
Overcast
Mild temperatures up to 78°F 25°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds building from SW at 6 mph 10 km/h to SSW at 18 mph 29 km/h. Gusts up to 33 mph 53 km/h.

Thursday, September 10, 2026

Mid-Morning
Smithtown Weather - 2026-09-10 - Morning - Overcast
74°F 23°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-10 - Afternoon - Sunny
81°F 27°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-10 - Evening - Overcast
75°F 24°C
Overcast
Very warm with a high of 81°F 27°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds moving from the SW to the NW at 14 mph 23 km/h. Gusts up to 24 mph 39 km/h.

Friday, September 11, 2026

Mid-Morning
Smithtown Weather - 2026-09-11 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-11 - Afternoon - Sunny
74°F 23°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-11 - Evening - Sunny
70°F 21°C
Sunny
Pleasant near 74°F 23°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the NNW to the SW at 9 mph 14 km/h.

Saturday, September 12, 2026

Mid-Morning
Smithtown Weather - 2026-09-12 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Smithtown Weather - 2026-09-12 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-12 - Evening - Sunny
68°F 20°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the NNW to the SSW at 9 mph 13 km/h.

Sunday, September 13, 2026

Mid-Morning
Smithtown Weather - 2026-09-13 - Morning - Sunny
70°F 21°C
Sunny
Mid-Afternoon
Smithtown Weather - 2026-09-13 - Afternoon - Sunny
74°F 24°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-13 - Evening - Overcast
72°F 23°C
Overcast
Enjoyable around 74°F 24°C, sunny through the afternoon, turning cloudy this evening, with increasing humidity and steady pressure. Winds turning from the SW to the S at 8 mph 14 km/h.

Monday, September 14, 2026

Mid-Morning
Smithtown Weather - 2026-09-14 - Morning - Overcast
74°F 23°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-14 - Afternoon - Scattered Showers
81°F 27°C
Scattered Showers
Early-Evening
Smithtown Weather - 2026-09-14 - Evening - Overcast
74°F 23°C
Overcast
Very warm near 81°F 27°C, though humidity makes it feel like 84°F 29°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds picking up from WSW at 6 mph 9 km/h to NNW at 14 mph 23 km/h. Gusts up to 26 mph 41 km/h.

Tuesday, September 15, 2026

Mid-Morning
Smithtown Weather - 2026-09-15 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Smithtown Weather - 2026-09-15 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-15 - Evening - Sunny
69°F 21°C
Sunny
Mild with a high of 72°F 22°C, sunny throughout the day, with lower humidity and steady pressure. Winds tapering down from N 12 mph 19 km/h to NNW 4 mph 6 km/h.

Wednesday, September 16, 2026

Mid-Morning
Smithtown Weather - 2026-09-16 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-16 - Afternoon - Partly Cloudy
73°F 23°C
Partly Cloudy
Early-Evening
Smithtown Weather - 2026-09-16 - Evening - Partly Cloudy
69°F 21°C
Partly Cloudy
Pleasant near 73°F 23°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds swinging from the E to the SSW at 8 mph 13 km/h.

Thursday, September 17, 2026

Mid-Morning
Smithtown Weather - 2026-09-17 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-17 - Afternoon - Scattered Showers
70°F 21°C
Scattered Showers
Early-Evening
Smithtown Weather - 2026-09-17 - Evening - Overcast
67°F 19°C
Overcast
Comfortable with temperatures reaching 70°F 21°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds shifting from the WSW to the S at 8 mph 13 km/h.

Friday, September 18, 2026

Mid-Morning
Smithtown Weather - 2026-09-18 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Smithtown Weather - 2026-09-18 - Afternoon - Sunny
76°F 24°C
Sunny
Early-Evening
Smithtown Weather - 2026-09-18 - Evening - Overcast
72°F 22°C
Overcast
Enjoyable around 76°F 24°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the SW to the SSE at 8 mph 13 km/h.

Saturday, September 19, 2026

Mid-Morning
Smithtown Weather - 2026-09-19 - Morning - Light Showers
65°F 19°C
Light Showers
Mid-Afternoon
Smithtown Weather - 2026-09-19 - Afternoon - Scattered Showers
67°F 19°C
Scattered Showers
Early-Evening
Smithtown Weather - 2026-09-19 - Evening - Sunny
66°F 20°C
Sunny
Mildly cool near 67°F 19°C, scattered downpours possible, with lower humidity and steady pressure. Winds E at 9 mph 14 km/h.

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Weather by the Numbers

Sun, 6th
Smithtown NY Weather - Sunday, Sep 6, 2026 - Light Rain
Hi: 72°F 22°C
Lo: 64°F 18°C
Sunrise 06:25 AM
Sunset 07:17 PM
Wind NNE 9 mph15 km/h
Dew Point 62°F17°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 72% *
Humidity 84%
Mon, 7th
Smithtown NY Weather - Monday, Sep 7, 2026 - Sunny
Hi: 79°F 26°C
Lo: 63°F 17°C
Sunrise 06:26 AM
Sunset 07:16 PM
Wind NNW 11 mph18 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 35%
Tue, 8th
Smithtown NY Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 82°F 28°C
Lo: 67°F 20°C
Sunrise 06:27 AM
Sunset 07:14 PM
Wind W 1 mph1 km/h
Dew Point 50°F10°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 9% *
Humidity 35%
Wed, 9th
Smithtown NY Weather - Wednesday, Sep 9, 2026 - Overcast
Hi: 79°F 26°C
Lo: 71°F 22°C
Sunrise 06:28 AM
Sunset 07:12 PM
Wind SW 12 mph20 km/h
Dew Point 61°F16°C
uv Index 3
Barometric Pressure 30.15 in1021 mb
POP 15% *
Humidity 62%
Thu, 10th
Smithtown NY Weather - Thursday, Sep 10, 2026 - Partly Cloudy
Hi: 82°F 28°C
Lo: 70°F 21°C
Sunrise 06:29 AM
Sunset 07:11 PM
Wind SW 8 mph13 km/h
Dew Point 60°F16°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 5% *
Humidity 58%
Fri, 11th
Smithtown NY Weather - Friday, Sep 11, 2026 - Sunny
Hi: 74°F 23°C
Lo: 63°F 17°C
Sunrise 06:30 AM
Sunset 07:09 PM
Wind NNW 9 mph15 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 6% *
Humidity 44%
Sat, 12th
Smithtown NY Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 73°F 23°C
Lo: 57°F 14°C
Sunrise 06:31 AM
Sunset 07:07 PM
Wind W 6 mph10 km/h
Dew Point 32°F-0°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 0% *
Humidity 24%
Sun, 13th
Smithtown NY Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 75°F 24°C
Lo: 65°F 18°C
Sunrise 06:32 AM
Sunset 07:06 PM
Wind S 9 mph14 km/h
Dew Point 52°F11°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 45%
Mon, 14th
Smithtown NY Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 82°F 28°C
Lo: 69°F 20°C
Sunrise 06:33 AM
Sunset 07:04 PM
Wind SW 11 mph18 km/h
Dew Point 67°F20°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 15% *
Humidity 65%
Tue, 15th
Smithtown NY Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 73°F 23°C
Lo: 62°F 17°C
Sunrise 06:34 AM
Sunset 07:02 PM
Wind N 11 mph18 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 39%
Wed, 16th
Smithtown NY Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 73°F 23°C
Lo: 60°F 16°C
Sunrise 06:35 AM
Sunset 07:00 PM
Wind SW 4 mph7 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30.33 in1027 mb
POP 6% *
Humidity 40%
Thu, 17th
Smithtown NY Weather - Thursday, Sep 17, 2026 - Cloudy
Hi: 72°F 22°C
Lo: 66°F 19°C
Sunrise 06:36 AM
Sunset 06:59 PM
Wind SW 8 mph13 km/h
Dew Point 52°F11°C
uv Index 5
Barometric Pressure 30.3 in1026 mb
POP 11% *
Humidity 51%
Fri, 18th
Smithtown NY Weather - Friday, Sep 18, 2026 - Partly Cloudy
Hi: 76°F 25°C
Lo: 68°F 20°C
Sunrise 06:37 AM
Sunset 06:57 PM
Wind SW 8 mph12 km/h
Dew Point 57°F14°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 9% *
Humidity 53%
Sat, 19th
Smithtown NY Weather - Saturday, Sep 19, 2026 - Patchy Rain Nearby
Hi: 70°F 21°C
Lo: 63°F 17°C
Sunrise 06:38 AM
Sunset 06:55 PM
Wind ENE 8 mph13 km/h
Dew Point 61°F16°C
uv Index 4
Barometric Pressure 30.27 in1025 mb
POP 40% *
Humidity 85%
* POP = Probability of Precipitation. Data for 12:00 PM.