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Setauket-East Setauket, NY Weather
Current conditions
Observed at Islip, Long Island Mac Arthur Airport · 58 min ago
Forecast
10-day-
Overnight
Clear, with a low around 43. West wind around 6 mph.
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Monday
Sunny. High near 66, with temperatures falling to around 64 in the afternoon. West wind around 8 mph.
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Monday Night
Mostly clear. Low around 48, with temperatures rising to around 50 overnight. Northwest wind 3 to 10 mph.
National Weather Service forecast updated 1 hr ago.
Hourly
Hourly forecast- Now43°
- 5 AM43°
- 6 AM43°
- 7 AM43°
- 8 AM44°
- 9 AM47°
- 10 AM51°
- 11 AM54°
- 12 PM57°
- 1 PM60°
- 2 PM62°
- 3 PM64°
- 4 PM65°
- 5 PM64°
- 6 PM62°
- 7 PM60°
- 8 PM57°
- 9 PM57°
- 10 PM56°
- 11 PM56°
- Tue12 AM55°
- 1 AM55°
- 2 AM54°
- 3 AM53°
Daily forecast
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Air quality
Forecast
- MonModerate (58)
Stratford, CT reporting area. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyIslip Area, records since 1963. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Bridgeport 29 km
- New Haven 44 km
- Stamford 39 km
- North Stamford 44 km
- Norwalk 33 km
- Danbury 59 km
- East Norwalk 32 km
- New Rochelle 57 km
- Brentwood 21 km
- Hamden 55 km
- Fairfield 27 km
- White Plains 57 km
Forecasters' discussion
From the National Weather Service office in OKX, issued 43 min ago
What Has Changed
No significant changes to the forecast with this update.
Key Messages
1) Despite a dry cold frontal passage tonight, high pressure is expected to dominate the area through the week and possibly into the weekend.
Key Message 1
An anomalously strong upper ridge will translate east into Monday. At the same time, a strong upper low tracking across central and eastern Canada will suppress the upper ridge to the north of our area. Upper ridging will then reestablish itself over the eastern portion of the country, with the region lying between the ridge to the south and mainly zonal flow to our north. Other than a dry cold front passage tonight, strong high pressure will dominate the weather pattern through the week.
Patchy frost is possible this morning in primarily outlying areas that were able to radiationally cool. Temperatures this morning remain highly dependent on the wind speed with any wind allowing temperatures to remain in the 40s and 50s and areas that are able to become calm, dropping as low as the low 30s. Frost is expected to be isolated enough to not warrant issuing any advisories.
Slightly warmer temperatures are anticipated today with highs reaching the upper 60s for most spots and around 70 in the NYC metro and NE NJ. Milder conditions tonight will trend slightly below normal for Tuesday with highs in the upper 50s to around 60 degrees, courtesy of some cold air advection behind a cold frontal passage. A light N-NW flow may continue Tuesday night, so temperatures may only fall into the upper 30s for areas where the growing season has not ended on Long Island and coastal CT. Frost could be a concern if winds end up going calm allowing temperatures to fall lower. A gradual warming trend is then forecast through the rest of the week with highs Thursday and especially Friday above normal in the upper 60s and lower 70s. Some of the warmer spots on Friday could reach the mid to upper 70s in NE NJ.
Outlook For 06z Tuesday Through Friday
Monday Night-Friday: VFR.
Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather