Brentwood, NY 11717 Weather

Suffolk County4:19 PM EDT40.78°N, 73.25°W

Current conditions

Sunny
56°
Sunny
Feels like 59°
High 56°·Low 39°
WindN 7 mph
Humidity38%
Dew point31°
Visibility10 mi
Cloud cover0%
UV index1 Low
Sunrise7:14 AM
Sunset6:02 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Friday

    Sunny, with a high near 56. North wind 6 to 10 mph.

  • Friday Night

    Mostly clear, with a low around 39. Northeast wind around 3 mph.

  • Saturday

    Sunny, with a high near 58. Northwest wind around 5 mph.

National Weather Service forecast updated 1 day ago.

Hourly

Hourly forecast
  1. Now Sunny 56°
  2. 5 PM Sunny 55°
  3. 6 PM Clear 54°
  4. 7 PM Clear 50°
  5. 8 PM Mostly Clear 46°
  6. 9 PM Clear 45°
  7. 10 PM Mostly Clear 44°
  8. 11 PM Mostly Clear 43°
  9. Sat12 AM Mostly Clear 42°
  10. 1 AM Mostly Clear 41°
  11. 2 AM Mostly Clear 40°
  12. 3 AM Mostly Clear 40°
  13. 4 AM Mostly Clear 39°
  14. 5 AM Mostly Clear 39°
  15. 6 AM Sunny 39°
  16. 7 AM Sunny 39°
  17. 8 AM Sunny 40°
  18. 9 AM Sunny 44°
  19. 10 AM Sunny 49°
  20. 11 AM Sunny 53°
  21. 12 PM Sunny 55°
  22. 1 PM Sunny 57°
  23. 2 PM Sunny 57°
  24. 3 PM Sunny 58°

10-day forecast

Details
  1. ThuOct 22 Sunny Sunny41°63°
  2. TodayOct 23 Sunny Sunny39°56°
  3. SatOct 24 Sunny Sunny39°58°
  4. SunOct 25 Sunny Sunny42°61°
  5. MonOct 26 Sunny Sunny48°65°
  6. TueOct 27 Sunny Sunny46°62°
  7. WedOct 28 Partly Sunny Partly Sunny47°60°
  8. ThuOct 29 Mostly sunny Mostly sunny45°61°
  9. FriOct 30 Partly cloudy Partly cloudy52°66°
  10. SatOct 31 Mostly sunny Mostly sunny49°58°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in New York

More weather news

Air quality

31
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • FriGood (27)
  • SatGood (32)
  • SunModerate (51)

Long Island Region, NY reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:14 AM
Sunset 6:02 PM
Daylight 10 h 48 min (−2 min 31 s tomorrow)
Waxing Gibbous · 93% lit
Moonrise 4:29 PM Moonset 4:19 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 45°
Record high78° (1978)
Record low30° (1997)
Wettest2.44 in (1990)
Month to date1.98 in (normal 2.84 in)

Islip Area, records since 1963. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in OKX, issued 14 hrs ago

What Has Changed

Small craft advisories have expanded in area and have been extended in time into tonight, Friday and Friday night. Coastal flood statement for Southern Nassau for early Friday morning with brief minor coastal flooding.

Key Messages

1) Dry conditions and gradually warming daytime temperatures are expected Friday through Monday. Dry conditions continue through much of next week.

2) For Friday night into the weekend, locations within our region (mainly across interior NE NJ, the Lower Hudson Valley, Southern CT, parts of Eastern Suffolk NY) there will be frost potential for late night and early morning.

3) Minor coastal flooding possible in back bays of Nassau County NY for the morning high tide. For subsequent high tide cycles through early Saturday, additional minor coastal flooding possible for the same location.

Key Message 1

Daytime high temperatures trend from below normal Friday to near normal Saturday and then more above normal Sunday and Monday. Dry conditions are forecast to prevail.

Mid levels from numerical weather prediction models indicate rising heights into the weekend. Trough exits east of the Canadian Maritimes with ridge moving in from the west. The ridging weakens late this weekend into early next week. At the surface, the low pressure associated with Josephine moves well out into the Northern Atlantic and east of Canadian Maritimes through Friday as high pressure builds in from the north across our local region.

Strong surface high pressure will be the main feature heading into the weekend with prevailing dry conditions. The pressure gradient will gradually weaken allowing for lighter winds. This will further allow for greater daytime insolation and greater nighttime radiational cooling with a more vast range in temperature between max and min.

Surface high pressure weakens and shifts farther south and west Sunday night into early next week. Dry conditions prevail through this weekend and into next week despite a cold front moving across late Monday into Monday night. Temperatures warm up for daytime highs this weekend and into early next week. Warmest day looks to be Monday with models showing relatively highest 850mb temperatures near 11 to 13 degrees C. Some locations are forecast to reach near 70 degrees Fahrenheit for Monday's highs. That is the warmest day of the forecast period through next week.

.KEY MESSAGE 2... With more radiational cooling each night, temperatures in outlying areas and rural sections will drop further.

Frost is expected to develop in these areas, mainly across the northern half of the forecast area. For tonight, patchy frost is forecast across parts of the interior and will be limited in spatial extent due to winds staying up in the boundary layer. Lows tonight range from mid 30s to upper 40s for much of the area.

Outlook For 06z Saturday Through Tuesday

Friday night through Tuesday: 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.