Marine Weather Net

Smithtown, NY Weather Forecast




Smithtown, New York

 Lat: 40.86N, Lon: 73.21W

Current Conditions Updated: 456 AM EDT WED AUG 19 2026

Overcast
Temp: 70°F
  • Humidity:
  • 87%
  • Winds:
  • 3 MPH NW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.88 in.
  • Dewpoint:
  • 66°F
  • Heat index:
  • 70°F

  • Sunrise:
  • 6:05 AM EDT
  • Sunset:
  • 7:44 PM EDT
  • Moonrise:
  • 1:44 PM EDT
  • Moonset:
  • 10:59 PM EDT

TODAY

SUNNY

Hi: 85°F
Lo: 75°F

THURSDAY

PARTLY SUNNY
Hi: 81°F
Lo: 65°F
Precip: 60%

FRIDAY

MOSTLY SUNNY
Hi: 80°F
Lo: 65°F

SATURDAY

PARTLY SUNNY
Hi: 79°F
Lo: 65°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 215 AM EDT Wed Aug 19 2026

Today...Sunny. Highs in the mid 80s. Northwest winds around 5 mph, becoming southwest this afternoon.
Tonight...Partly cloudy. Humid with lows around 70. Southwest winds 5 to 10 mph, becoming west after midnight.
Thursday...Partly sunny. Showers likely with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. North winds around 5 mph. Chance of rain 60 percent.
Thursday Night...Mostly cloudy with showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain 60 percent.
Friday...Mostly sunny. Highs around 80. North winds 5 to 10 mph, becoming northeast in the afternoon.
Friday Night...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent.
Saturday...Partly sunny with a chance of showers in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.
Saturday Night...Mostly cloudy. A chance of showers. Lows in the mid 60s. Chance of rain 50 percent.
Sunday...Mostly cloudy with a chance of showers in the morning, then partly sunny with a chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
Sunday Night...Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the mid 60s. Chance of rain 40 percent.
Monday...Sunny. Highs in the lower 80s.
Monday Night...Mostly clear. Lows in the lower 60s.
Tuesday...Sunny. Highs around 80.
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