Foxborough, Massachusetts Weather Forecast Discussion

613
FXUS61 KBOX 281053
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
653 AM EDT Sun Sep 28 2025
.SYNOPSIS...
Showers exit the coast around daybreak followed by increasing
sunshine today and it will be quite warm and a bit humid. Warm and
dry weather continues into Tuesday, followed by much cooler
conditions Wednesday and Thursday as strong high pressure builds to
the north. A warming trend begins Friday with a return to above
normal temperatures next weekend as the dry weather pattern
continues.
&&
.NEAR TERM /THROUGH TONIGHT/...
Key Messages:
* Rather warm and a bit humid with increasing sunshine today
* Clear and comfortably cool tonight
Northern extent of showers have expanded into RI and SE MA
early this morning as a sharper mid level tough axis to the west
has allowed showers to lift a further north. Already seeing an
eastward trend in the rain shield and expect the showers to exit
the Cape/Islands around daybreak as weak low pres moves
offshore. Clouds will then give way to increasing sunshine
from west to east today as the column dries out. Rather warm day
expected with 925 mb temps warming to 18-20C which will support
highs 80-85F, except mid-upper 70s near the south coast with SW
winds in place. Elsewhere, winds will become west around 10 mph
this afternoon with potential for some gusts to 15-20 mph as
boundary layer is well mixed. Dewpoints will be mostly in the
upper 50s to lower 60s this afternoon.
High pres builds into the region tonight leading to clear skies and
light to calm winds. After a warm day, good radiational cooling will
allow low temps to drop into the 50s, with some upper 40s possible
in portions of the CT valley. Patchy late night radiation fog may
develop.
&&
.SHORT TERM /MONDAY THROUGH TUESDAY/...
Key Messages:
* Continued warm and dry Mon and Tue, but less humid
* Turning cooler Tue afternoon near the coast with wind shift to NE
High pres overhead on Monday which will be the warmest day of the
work week. Highs will reach upper 70s to near 80, but a bit cooler
along the coast as sea-breezes develop. It will be much less humid
with dewpoints dropping into the upper 40s and 50s. Then on Tue,
northern stream trough will push a cold front to the south by the
afternoon with wind shift to NE. Temps should reach well into the
70s as best low level cold advection is delayed until Tue night. But
it does turn cooler along the coast in the afternoon as winds shift
to NE behind the front.
Sunshine may give way to some increasing high clouds from the south
Mon afternoon into Tue well north of what will likely become
Tropical Storm or Hurricane Imelda off the SE coast.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
Key Messages:
* Trending much cooler Wed and Thu, then a warming trend begins
  Fri with above normal temps returning next weekend
* Dry weather continues into the weekend
* Hurricane Humberto stays well offshore, but will likely bring
  high surf and dangerous rip currents to coastal areas around
  the middle of next week
Large high pres builds south from Canada through the period which
will bring an extended period of dry weather. The column is quite
dry with PWATs well below normal so expect sunny days and mostly
clear nights into the weekend. But we may see some ocean effect
clouds and low risk for a few showers over Cape Cod Wed night as
potent shortwave moves southward from Maine, passing just east of
SNE. Also, gusty winds NE winds will develop along the coast Wed
into Thu. Gradient tightens between high pres to the north and
Hurricane Humberto on Wed, then a secondary surge of wind Wed
night into Thu with passing shortwave to the east.
Much cooler airmass settles southward across SNE Wed and Thu. Below
normal temps expected with coolest temps expected Wed night into Thu
night, with lows dropping into the 30s and 40s with highs Thu upper
50s and lower 60s. Best chance for some frost away from the coast
will be Thu night as the high builds overhead. Then a nice warming
trend develops Fri into the weekend as upper ridging moves back into
New Eng. Temps should recover to near normal on Fri and back into
the 70s next weekend.
Hurricane Humberto will track well to the south and east of New Eng
around midweek but will bring increasing swell leading to high surf
and dangerous rip currents for SNE beaches, especially along the
south coast. Surf will be increasing on Tue with the peak of the
high surf and dangerous rip currents on Wed. High surf will likely
linger into Thu but should be diminishing by then.
&&
.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
12Z Update...
Today through Monday...High Confidence.
VFR. Clearing skies from NW-SE 12-18z. SW-W wind increasing to
8-15 kt today then light to calm tonight. Light wind Mon with
sea-breezes developing.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Tuesday Night through Thursday/...
Tuesday Night: VFR. Breezy.
Wednesday through Wednesday Night: VFR. Windy with local gusts
up to 30 kt.
Thursday: VFR. Breezy.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Relatively tranquil boating conditions through Monday with weak high
pres over the waters bringing light winds and seas.
Outlook /Tuesday Night through Thursday/...
Tuesday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 11 ft.
Wednesday: Strong winds with gusts up to 30 kt. Rough seas up
to 12 ft.
Wednesday Night: Strong winds with local gusts up to 30 kt.
Rough seas up to 11 ft. Slight chance of rain showers.
Thursday: Moderate risk for Small Craft Advisory winds with
local gusts up to 30 kt. Rough seas up to 10 ft.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.
&&
$$
SYNOPSIS...KJC
NEAR TERM...KJC
SHORT TERM...KJC
LONG TERM...KJC
AVIATION...KJC/BW
MARINE...KJC

NWS BOX Office Area Forecast Discussion