Pelham, New Hampshire 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

288
FXUS61 KGYX 151006
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
606 AM EDT Wed Oct 15 2025

.SYNOPSIS...
A cold front will push offshore through the morning with
northwest winds ramping up in its wake. High pressure over the
Great Lakes will slowly move east through the end of the week
while an upper low over the Canadian Maritimes may spread some
showers into the area Thursday. High pressure moves closer to
overhead Friday before settling south of New England this
weekend for a warming trend. A front system approaches early
next week bring the next chance for rain Sunday night into
Monday.

&&

.NEAR TERM /THROUGH TONIGHT/...
6 AM Update:
Stratus continues to linger this morning across northern New
Hampshire and portions of the western Maine mountains.
Elsewhere, expect some cirrus through the morning with some
valley fog. No major changes were needed for this update. Just
blended in the latest observations to the going forecast.

Previous Discussion:
A cold front continues to approach from Quebec and will cross
the forecast area through the morning and into the early
afternoon. Behind the front, the pressure gradient will tighten
leading some breezy northwest winds. The NBM looks to still be
a touch on the light side so will continue with previous trends
of blending in some NBM90 and MOS guidance.

Temperatures will be a bit cooler than yesterday behind the
front. Highs will generally range from the mid to upper 40s
across northern New Hampshire and northwest Maine, to the upper
50s south. We could see some lower 60s along coastal areas.

After starting out the early morning with a little bit of
valley fog and plenty of clouds, we should see some clearing
outside of the mountains this afternoon. A stray shower or two
cannot be ruled out as an upper low will start to approach from
the north.

&&

.SHORT TERM /THURSDAY/...
The aforementioned upper low will swing down into eastern Maine
tonight into Thursday, potentially bringing a few showers to our
eastern zones or over the coastal waters. Low temperatures
tonight will range from the upper 20s and lower 30s north, to
the mid to upper 30s most elsewhere. A tight pressure gradient
will remain in place so we will see another round of breezy
northwest winds, especially over the coastal waters.

Highs on Thursday will be cooler than Wednesday, ranging from
the upper 30s and lower 40s across northwest Maine and northern
New Hampshire, to the low to mid 50s south.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
Early morning NBM update...No significant changes noted in the
latest NBM other than a slowing of PoPs Sunday night into
Monday as well as slight down trend. Winds continue to look
gusty Thursday night into Friday but will coming down from their
peak on Thursday. Saturday into Sunday will be fair weather
days will temperatures moderating into the upper 60s and
possibly low 70s on Sunday. The latest available NWP guidance
and ensembles have some solutions resulting in a cut off low
Sunday night and Monday that may slide south of the area which
is likely a source in the downward trend in PoPs.

Previously...

Key Message: High pressure builds in late Friday allowing gusty
winds to abate. High pressure then settles south of New England
over the weekend allowing temperatures to moderate. An upper
trough/closed low sends a cold front into the Northeast early
next week bring chances for rain Sunday night and Monday.

Impacts: No significant weather impacts anticipated.

Forecast Details: A tight gradient will persist over the area
Thursday night into Friday morning for continued gusty winds.
Winds will gradually relax Friday evening with highs on Friday
ranging from the 50s to the 60s.

A gradual warming is expected Saturday into Sunday ahead of an
approaching cold front. This will occur along with a gradual
decrease in winds and reversal in wind direction.

The pattern does start to get blocky as ocean low cuts off...so
there is model uncertainty with speed of said cold front. Some
guidance continue to put the front well into the forecast area
Sun...roughly 20 percent of available ensemble members. Given
the previous forecasts were higher PoP...I slowed down the
arrival by sharpening the gradient on the leading edge. But the
event itself looks like a good chance for rain but nothing to
write home about. The PWATs will not be all that anomalous and
the IVT will be weakening as it moves into the local area.

&&

.AVIATION /10Z WEDNESDAY THROUGH SUNDAY/...
Short Term...MVFR stratus continues to linger over northern New
Hampshire and portions of the western Maine mountains. By mid
to late morning, VFR conditions should generally prevail at most
sites. Patchy valley fog at LEB and HIE will lead to some
reduced visibilities through the early morning hours. Winds will
be fairly breezy out of the northwest this afternoon.

Long Term...Largely VFR conditions expected thru Sun. Surface
wind gusts on Thur night into Friday are forecast to be between
25 and 30 kt at times.

&&

.MARINE...
Short Term...Breezy northwest winds and seas in the 5 to 7 foot
range will lead to SCA conditions through at least today and
will eventually be needed tonight as well.

Long Term...Strong pressure gradient between ocean storm and
building high pressure will lead to potential gale force wind
gusts thru Thu night. Gale watch has been issued for the outer
waters until Fri morning. Winds will then quickly diminish as
high pressure shifts east and flow becomes southwesterly.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for
     ANZ150>154.
     Gale Watch from Thursday morning through Friday morning for
     ANZ150-152-154.

&&

$$

NEAR TERM...Hargrove
SHORT TERM...Hargrove
LONG TERM...Legro/Schroeter