Marine Weather Net

Stony Brook, NY Weather Forecast




Stony Brook, New York

 Lat: 40.91N, Lon: 73.13W

Current Conditions Updated: 356 PM EDT TUE AUG 11 2026

Overcast
Temp: 85°F
  • Humidity:
  • 51%
  • Winds:
  • 10 MPH NW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.83 in.
  • Dewpoint:
  • 65°F
  • Heat index:
  • 87°F

  • Sunrise:
  • 5:57 AM EDT
  • Sunset:
  • 7:55 PM EDT
  • Moonrise:
  • 4:19 AM EDT
  • Moonset:
  • 7:31 PM EDT

TODAY

PARTLY SUNNY
Hi: 85°F
Lo: 75°F
Precip: 20%

WEDNESDAY

PARTLY SUNNY
Hi: 85°F
Lo: 69°F
Precip: 30%

THURSDAY

PARTLY SUNNY
Hi: 85°F
Lo: 71°F
Precip: 30%

FRIDAY

SUNNY

Hi: 85°F
Lo: 61°F
Weather Forecast In Detail:
Forecast Issued: 306 AM EDT Tue Aug 11 2026

Today...Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the mid 80s. West winds 5 to 10 mph. Chance of rain 20 percent.
Tonight...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Humid with lows around 70. West winds around 5 mph, becoming north after midnight. Chance of rain 20 percent.
Wednesday...Partly sunny. A chance of showers in the morning. Highs in the mid 80s. North winds around 5 mph, becoming northwest in the afternoon. Chance of rain 30 percent.
Wednesday Night...Partly cloudy. Lows in the upper 60s. Southwest winds around 5 mph.
Thursday...Partly sunny. A chance of showers in the afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph. Chance of rain 30 percent.
Thursday Night...Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 70s. Chance of rain 30 percent.
Friday...Sunny. Highs in the mid 80s.
Friday Night...Mostly clear. Lows in the lower 60s.
Saturday...Sunny. Highs in the lower 80s.
Saturday Night...Partly cloudy. Lows in the lower 60s.
Sunday...Mostly sunny. Highs in the lower 80s.
Sunday Night...Mostly cloudy with a 50 percent chance of showers. Lows in the upper 60s.
Monday...Partly sunny with a 50 percent chance of showers. Highs in the lower 80s.
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