Marine Weather Net

Stony Brook, NY Weather Forecast




Stony Brook, New York

 Lat: 40.91N, Lon: 73.13W

Current Conditions Updated: 1156 PM EDT TUE OCT 20 2026

Mostly Clear
Temp: 52°F
  • Humidity:
  • 58%
  • Winds:
  • 6 MPH N
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.23 in.
  • Dewpoint:
  • 38°F
  • Heat index:
  • 52°F

  • Sunrise:
  • 7:08 AM EDT
  • Sunset:
  • 6:03 PM EDT
  • Moonrise:
  • 3:48 PM EDT
  • Moonset:
  • 2:03 AM EDT

TONIGHT

CLEAR

Lo: 45°F

WEDNESDAY

SUNNY

Hi: 60°F
Lo: 45°F

THURSDAY

SUNNY

Hi: 61°F
Lo: 41°F

FRIDAY

SUNNY

Hi: 51°F
Lo: 40°F
Weather Forecast In Detail:
Forecast Issued: 315 PM EDT Tue Oct 20 2026

Tonight...Clear. Lows in the mid 40s. Northeast winds 15 to 20 mph with gusts up to 30 mph.
Wednesday...Sunny, breezy with highs around 60. Northeast winds 15 to 25 mph.
Wednesday Night...Partly cloudy. Lows in the mid 40s. North winds 15 to 20 mph with gusts up to 30 mph.
Thursday...Sunny. Highs in the lower 60s. North winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night...Clear. Lows in the lower 40s. North winds 15 to 20 mph with gusts up to 30 mph.
Friday...Sunny. Highs in the lower 50s.
Friday Night...Mostly clear. Lows around 40.
Saturday...Sunny. Highs in the mid 50s.
Saturday Night...Clear. Lows in the mid 40s.
Sunday...Sunny. Highs in the lower 60s.
Sunday Night...Mostly clear. Lows in the upper 40s.
Monday...Sunny. Highs in the mid 60s.
Monday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday...Mostly sunny. Highs around 60.
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