Gilmanton, New Hampshire Weather Forecast Discussion

067
FXUS61 KGYX 080530
AFDGYX
Area Forecast Discussion
National Weather Service Gray ME
130 AM EDT Mon Sep 8 2025
.SYNOPSIS...
High pressure will remain in control of our weather through most
of the week. The daytime temperatures will be warm with fair
weather and the overnights will be cool. There may even be some
low to mid 30s and frost for the northern valleys tonight.
There will also be another extended stretch of dry weather, with
no rain anticipated through next weekend.
&&
.NEAR TERM /THROUGH TODAY/...
High pressure will settle into the forecast area today with
seasonable temperatures, fair weather (except for some occasional
BKN diurnal CU), and a light northwest flow. A seabreeze will
bring onshore winds at the coast this afternoon.
&&
.SHORT TERM /TONIGHT THROUGH TUESDAY/...
Good radiational cooling conditions are expected tonight. It`s
the time of year we start thing about frost up north. Conditions
look favorable for out better radiators in northern NH and
northern Oxford County ME to get down into the lower to mid 30s
tonight. Therefore a frost advisory has been issued there.
Elsewhere, cool and fair weather is expected overnight.
Fair weather continues Tuesday with high pressure holding on.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
Key Message: Large areas of high pressure dominate the weather
and lead to largely dry conditions for the area.
Impacts: Dry weather will lead to maintaining or expanding
drought conditions.
Forecast Details: High pressure center drifts east thru Tue but
remains in control of the area. Guidance is not as cool as Mon
night...but it still looks favorable for radiational cooling and
valley fog. What looks to be a dry frontal passage occurs
Wed...with reinforcing high pressure building southeast for the
remainder of the week. Temps look to be similar both during the
day and overnight and the NBM looked to have a good handle on
that.
The main story however is that it does not look like any rain
will fall for this period. Despite the rain over the last two
days that will likely maintain or expand the current drought
conditions across the forecast area.
&&
.AVIATION /03Z MONDAY THROUGH FRIDAY/...
Short Term...Early morning fog and stratus (mainly owing to the
rainfall and thunderstorms from Saturday) will burn off early on
resulting in mainly VFR conditions after 12 or 13z. A seabreeze
will bring onshore flow this afternoon albeit light. Valley fog
is once again expected tonight with VFR conditions on Tuesday.
Long Term...Predominately VFR conditions thru the extended.
Seabreezes are likely during the day...so coastal terminals will
see a wind shift to onshore during the afternoon. Large area of
high pressure will lead to strong cooling overnight and valley
fog developing. HIE and LEB are likely to see overnight IFR or
lower conditions for most nights thru the week.
&&
.MARINE...
Short Term...High pressure will settle over the waters today and
Tuesday with light winds and relatively tranquil seas. Winds go
locally onshore this afternoon with a seabreeze.
Long Term...Winds and seas expected to remain below SCA
thresholds. Weak pressure gradient will promote seabreezes
during the day with winds turning onshore.
&&
.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...None.
&&
$$
NEAR TERM...Ekster
SHORT TERM...Ekster
LONG TERM...Baron/Legro
AVIATION...Ekster/Legro
MARINE...Ekster/Legro

NWS GYX Office Area Forecast Discussion