Brentwood, New York 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Brentwood NY
National Weather Service Forecast for:
Brentwood NY
Issued by: National Weather Service New York, NY |
Updated: 2:18 am EDT Jul 14, 2025 |
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Overnight
 Patchy Drizzle and Patchy Fog
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Monday
 Patchy Drizzle and Patchy Fog then Chance T-storms
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Monday Night
 Chance T-storms then Showers Likely
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Tuesday
 Showers Likely
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Tuesday Night
 Slight Chance T-storms
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Wednesday
 Partly Sunny
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Wednesday Night
 Chance Showers
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Thursday
 Partly Sunny then Chance T-storms
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Thursday Night
 Chance T-storms then Partly Cloudy
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Lo 71 °F |
Hi 83 °F |
Lo 73 °F |
Hi 85 °F |
Lo 73 °F |
Hi 88 °F |
Lo 75 °F |
Hi 90 °F |
Lo 75 °F |
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Overnight
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Patchy drizzle and fog with a slight chance of showers after 5am. Mostly cloudy, with a low around 71. Calm wind. |
Monday
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Patchy drizzle and thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 83. Light south wind increasing to 5 to 9 mph in the morning. |
Monday Night
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A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 73. Southwest wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Tuesday
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Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms, mainly between 8am and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 85. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
Tuesday Night
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A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph. |
Wednesday
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Partly sunny, with a high near 88. |
Wednesday Night
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A 30 percent chance of showers. Mostly cloudy, with a low around 75. |
Thursday
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A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. |
Thursday Night
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A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 75. |
Friday
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A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. |
Friday Night
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A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. |
Saturday
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Mostly sunny, with a high near 87. |
Saturday Night
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Partly cloudy, with a low around 71. |
Sunday
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A 30 percent chance of showers. Mostly sunny, with a high near 85. |
Forecast from NOAA-NWS
for Brentwood NY.
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Weather Forecast Discussion
198
FXUS61 KOKX 140614
AFDOKX
Area Forecast Discussion
National Weather Service New York NY
214 AM EDT Mon Jul 14 2025
.SYNOPSIS...
Offshore high pressure departs further east tonight. A cold front
approaches the region from the west Monday, attempting to move
through into Monday night. The frontal boundary likely remains just
south of the area for a few days before returning north as a warm
front sometime late in the week. This will be followed but a cold
frontal passage late week into the weekend.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
High pressure that has been situated off the coast of Nova Scotia
exits further out into the Atlantic into tonight, as a cold front
over the eastern Great Lakes gradually works east.
Stratus develops and rolls in into this evening. Lowered PoPs a
bit across NE NJ and the LoHud Valley late today with any
activity likely remaining off to the west based on current radar
and latest hi res guidance. Still possible a shower or spotty
thunderstorm drifts east into this evening, but coverage looks
isolated at best with limited forcing and most, if not all,
remain dry through this evening. Prefrontal convergence well
ahead of an approaching frontal boundary could instigate some
showers into the western Lower Hudson Valley overnight, but
activity should weaken as it drifts east.
With the persistent onshore flow and saturated low levels, in
addition to widespread stratus tonight, will have to watch for
possible areas of patchy fog or drizzle late, mainly LI and
southern CT.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM TUESDAY/...
Ridge axis aloft shifts east of the region as a surface cold
front approaches from the west Monday, moving into the region
Monday night.
Any morning fog or drizzle comes to an end by mid morning,
and the stratus blanket attempts to break up into the afternoon.
The approach of the frontal system will eventually initiate
showers and thunderstorms, though forcing looks relatively weak
until later in the day. Looking at the thermo environment,
abundant moisture with a tropical like air mass in place and
PWATs progged near 2 inches will combine with modest instability,
though denser cloud cover could hinder this. Deep layer shear
will be lacking, with a piddly wind profile through much of the
column. This should keep convection relatively unorganized, but
can`t rule out a few strong or damaging wind gusts with any
thunderstorm, though the overall severe threat looks limited.
Perhaps a bit more of a concern is the potential for higher
rainfall rates in the moisture laden environment, particularly
for areas west of the Hudson. Hi res guidance, including the
12Z HREF, is signaling potential for pockets of convection
producing rates over an inch an hour, mainly over NE NJ and the
LoHud Valley. WPC has expanded the SLGT risk, in line with CSU
ML guidance, to now include northeast New Jersey and the Lower
Hudson Valley, with a MRGL for areas to the east. Certainly
could see localized to isolated flash flooding instances,
particularly in the SLGT risk area, but more likely areas of
minor nuisance flooding as the convection works through. Timing
looks mid to late afternoon at the earliest for western areas,
including NE NJ, NYC, and the LoHud Valley, before activity
works east across southern CT and Long Island into the evening
hours, and could linger into the overnight as the weakening
boundary slows or hangs up over the region, though rains should
lower at night.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
***Key Points***
*Potential remains for several days of high heat and humidity this
week. The higher confidence is now for Wednesday through Friday,
with widespread max heat index values forecast to be 95 to around
100 (Heat Advisory criteria).
*A relatively active pattern is expected with chances for several
days of afternoon showers and thunderstorms.
A frontal boundary will likely stall just offshore and linger near
the area through midweek before returning north as a warm front. A
cold front will then follow at the end of the week into the weekend.
Aloft, the pattern stays the same through the period. Although we
are under some high heights, we are somewhat on the eastern end of a
broad upper level trough centered over central Canada and few
shortwaves likely pass through.
With strong Bermuda high in place, a S/SW flow will allow plenty of
moisture to be sent our way. This combined with above normal high
temperatures brings some potential for a heat wave, with widespread
heat index values of 95 to around 100 (Heat Advisory criteria)
currently expected Wednesday through Friday. Temperatures have
trended down a bit, especially for Tuesday which now looks like it
may not reach Heat Advisory criteria. However, there still is
uncertainty especially given the potential for convection and slight
inconsistencies in a late week frontal system among the guidance.
The NBM was followed for highs but did manually lower afternoon
dewpoints a few degrees when better mixing is expected. This still
gave dewpoints in the lower to mid 70s.
Too early to talk specifics when it comes to severe or flooding
concerns with the aforementioned convection. These details will be
ironed over the next few days. There is plenty of moisture around
with pwats 1.50-2.00+ for much of the period so any convection that
does develop will likely be able to produce heavy downpours. As for
severe, while we are pretty unstable, shear looks weak through much
of the period, with some better values as we get into late week and
the weekend.
&&
.AVIATION /06Z MONDAY THROUGH FRIDAY/...
Offshore high pressure weakens tonight. A cold front gradually
approaches the area on Monday and Monday night.
MVFR expected tonight with IFR possible towards daybreak.
Conditions improve to VFR around midday or into Monday afternoon
at all the terminals. There continues to be a lot of
uncertainty with the timing of flight change categories.
Scattered showers will move through, mainly for the metro
terminals, while drizzle is possible for eastern terminals.
Showers and thunderstorms are possible Monday afternoon. Higher
confidence for the metro terminals and KSWF and KHPN with less
confidence for eastern terminals. Best timing is 22Z Monday
through 02Z Tuesday, though thunder may occur anytime after 18Z
Monday. Thunder become less likely after 02Z Tuesday, but an
isolated thunderstorm may still move through the terminals.
Showers with heavy rain is more likely, which will continue to
reduce flight categories to MVFR or lower through the remainder
of the forecast period.
Light SE winds up to 10kt becoming generally light and variable
tonight. A more southerly flow develops Monday with speeds to
around 10 kt.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Amendments expected due to changes in flight categories changes
and timing through the forecast period.
Higher confidence in thunderstorms Monday afternoon at KEWR and
KTEB.
.OUTLOOK FOR 06Z TUESDAY THROUGH FRIDAY...
Monday Night: MVFR or lower in showers or thunderstorms.
Tuesday-Friday: Mainly VFR. MVFR or lower in any showers or
thunderstorms in the afternoon and evening.
Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
Patchy dense fog is possible on the local coastal waters Monday
morning.
With a weak pressure gradient, winds and waves likely remain below
Small Craft Advisory criteria through the coming weekend. However,
a relatively active pattern is expected next week with chances
of afternoon showers and thunderstorms for several days. Winds
and waves will be higher in any storms.
&&
.HYDROLOGY...
Showers and thunderstorms move through Monday afternoon and
evening, and could produce locally heavy downpours with rainfall
rates that briefly exceed an inch per hour. This could lead to
areas of minor, nuisance flooding, with a localized flash flood
risk, especially across urbanized NE NJ.
At this time, there are no significant flood concerns Tuesday
through next weekend.
&&
.TIDES/COASTAL FLOODING...
For Atlantic Ocean beaches, the rip current risk is low on
Monday and Tuesday with generally a 10kt or less onshore flow
and a weakening S/SE swell.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...None.
&&
$$
SYNOPSIS...DR/JT
NEAR TERM...DR
SHORT TERM...DR
LONG TERM...JT
AVIATION...JP
MARINE...DR/JT
HYDROLOGY...DR/JT
TIDES/COASTAL FLOODING...
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