Winthrop, Maine Weather Forecast Discussion

268
FXUS61 KGYX 261708
AFDGYX
Area Forecast Discussion
National Weather Service Gray ME
108 PM EDT Fri Sep 26 2025
.SYNOPSIS...
A few showers may develop this afternoon, mainly in the
mountains, but otherwise high pressure builds back into the
area through the rest of today and into next week with dry
weather and warm temperatures. A cold front moves through late
Monday and Tuesday, allowing for much cooler but still pleasant
weather for midweek.
&&
.NEAR TERM /THROUGH TONIGHT/...
Impacts and Key Message:
* No significant weather impacts expected.
Generally quiet weather is expected through the near term. Upper
level troughing will continue to move through the region today. A
cold front will also move across the forecast area this afternoon
and evening from north to south, interacting with a weak shortwave.
This forcing and upslope flow may lead to some showers over northern
and central New Hampshire as well as the western Maine mountains.
Showers should start to diminish with the lack of daytime heating by
early evening. High pressure will start to build in behind the front
tonight, leading to calm winds and the usual valley fog given the
recent soaking rains.
Afternoon highs will be warmer today, especially outside of the
mountains where we should see plenty of clearing, mainly in the mid
60s and lower 70s over northern New Hampshire and the western Maine
mountains, to the mid 70s to lower 80s elsewhere. Lows tonight will
generally be in the 40s across the north and the 50s south. Some
radiational cooling is likely given the clear skies and light winds.
&&
.SHORT TERM /SATURDAY/...
Impacts and Key Message:
* No significant weather impacts expected.
Mild temperatures persist on Saturday with highs mainly in the 70s
(some 60s north). High pressure slides off to the east with a dry
airmass settling in behind the front, but southerly return flow
could advect some high clouds into the region from the south. Valley
fog will once again be possible Saturday night, but may be just
confined to the northern valleys given the drier airmass. Lows will
be in the mid to upper 40s across the north with 50s expected
elsewhere.
&&
.LONG TERM /SUNDAY THROUGH FRIDAY/...
Overview: Dry weather conditions will persist through much of
next week as strong high pressure builds over New England. Above
average temperatures are expected Sunday through Tuesday before
a cold front brings cooler temperatures for the later half of
the week.
Impacts: No significant weather related impacts are expected
other than continued drought conditions.
Forecast Details: A weak sfc warm front will lift northward across
northern New England on Sunday morning, placing the region into the
warm sector with highs reaching the lower to perhaps middle 80s
south of the mtns. A few spots could potentially approach daily
records. Skies will be mainly sunny with southwesterly flow.
Radiational cooling will allow lows to bottom out into the lower 40s
across some interior valleys with 50s in most other locations.
Another warm day is expected on Monday with high pressure remaining
in control with highs into the upper 70s/lower 80s for most
locations and lows into the 40s and 50s. One more well above avg day
is then likely on Tuesday with highs into the middle to upper 70s
and mostly sunny skies prevailing.
Cooler temperatures will begin to return Tuesday night with lows
into the 30s across the north with lower to middle 40s south.
Despite a plethora of sunshine on Wednesday and Thursday, high
temperatures will be closer to seasonable averages with highs into
the 60s and lows into the 30s. This will bring our next potential
for perhaps a widespread frost or freeze.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Short Term...Mainly VFR conditions are expected through the
18z TAF period, but overnight fog could lead to a period of
LIFR to MVFR visibilities at KMHT/KCON/KLEB/KHIE. Fog will lift
shortly after sunrise. A few showers are possible this afternoon
across northern and central New Hampshire, potentially impacting
KLEB and KHIE.
Long Term...Other than nighttime valley FG at KLEB, KHIE, and KCON
mainly VFR conditions will prevail through the period with
winds less than 20 kts.
&&
.MARINE...
Short Term...Seas continue to subside this afternoon.
Therefore, we were able to cancel the SCA a little bit early as
wave heights have fallen below 5ft. Southwesterly winds prevail
the rest of today, before shifting northerly overnight tonight
as a front crosses the waters. Winds then shift back to
southerly Saturday afternoon.
Long Term...High pressure will keep winds and seas below SCA
criteria through early next week. SCA conditions are then
possible towards mid-week behind a frontal passage. Long period
swells are also likely to increase late week from distant
tropical disturbances.
&&
.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...None.
&&
$$
NEAR TERM...Hargrove
SHORT TERM...Hargrove
LONG TERM...Tubbs

NWS GYX Office Area Forecast Discussion