Marine Weather Net

Smithtown, NY Weather Forecast




Smithtown, New York

 Lat: 40.86N, Lon: 73.21W

Current Conditions Updated: 1156 AM EDT WED JUL 22 2026

Mostly Cloudy
Temp: 81°F
  • Humidity:
  • 74%
  • Winds:
  • 13 MPH SW
  • Gusts:
  • 21 MPH
  • Barometer:
  • 29.75 in.
  • Dewpoint:
  • 72°F
  • Heat index:
  • 85°F

  • Sunrise:
  • 5:38 AM EDT
  • Sunset:
  • 8:17 PM EDT
  • Moonrise:
  • 2:53 PM EDT
  • Moonset:
  • N/A EDT

TODAY

PARTLY SUNNY
Hi: 85°F
Lo: 65°F
Precip: 40%

THURSDAY

SUNNY

Hi: 81°F
Lo: 65°F

FRIDAY

SUNNY

Hi: 81°F
Lo: 65°F

SATURDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 65°F
Weather Forecast In Detail:
Forecast Issued: 212 AM EDT Wed Jul 22 2026

Today...Partly sunny. A chance of showers with a slight chance of thunderstorms this morning, then a chance of thunderstorms with a slight chance of showers this afternoon. Highs in the mid 80s. Southwest winds 10 to 15 mph. Chance of rain 40 percent.
Tonight...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 60s. Northwest winds 5 to 10 mph, becoming north after midnight. Chance of rain 20 percent.
Thursday...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
Thursday Night...Mostly clear. Lows in the mid 60s. Southeast winds around 5 mph, becoming north after midnight.
Friday...Sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph.
Friday Night...Mostly clear. Lows in the mid 60s.
Saturday...Mostly sunny. Highs in the lower 80s.
Saturday Night...Partly cloudy. Lows in the mid 60s.
Sunday...Mostly sunny. Highs in the mid 80s.
Sunday Night...Partly cloudy. Lows in the upper 60s.
Monday...Partly sunny. A chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 40 percent.
Monday Night...Mostly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 40 percent.
Tuesday...Partly sunny. A chance of showers. Highs in the mid 80s. Chance of rain 50 percent.
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