Juneau, Alaska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

426
FXAK67 PAJK 210018
AFDAJK

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
418 PM AKDT Mon Apr 20 2026

.SHORT TERM...Some rain showers and lowered clouds continue this
afternoon for the panhandle. The break from the rain is expected to
be short for the northern panhandle though as the next front comes
across the northern Gulf later this evening into the overnight
hours. This front is expected to be fairly weak and should bring
some light rain to the panhandle. Most of the rain will be for
places north of Ketchikan. Although most of the organized
precipitation will be over by mid morning tomorrow. Rain showers
could still be possible heading into tomorrow with the onshore
flow and potential showers forming off the terrain. Heading into
Wednesday, high pressure become the predominant weather for the
middle of the week.

.LONG TERM.../Wednesday through Saturday/...A relatively benign
pattern is in store for SE AK, so minimal changes have been made
to the forecast. Ridging over the gulf continues to build
Wednesday into Thursday, letting the southern panhandle see more
of a break through the week. Dry weather will persist for much of
the southern panhandle and parts of the central panhandle into the
weekend, with only small chances for the occasional light shower
to reach the outer coast. The ridging is set up in such a way that
the northern panhandle will see onshore flow continue scattered,
light showers through the period, with potential for long breaks
with broken skies in between. The northeastern gulf coast looks to
remain the exception through Thursday, with Yakutat most likely
seeing the edges of a front along the northwestern gulf coast
continue to funnel moisture into the area through the rest of the
week and into the weekend. For any area that sees rainfall through
this period, rates will remain on the lighter side with the
exception just being for the occasional pocket of heavier showers.
Models are mostly in line for this period, but start to split
going into Friday night and Saturday. The EC has come more in line
with the other models in the most recent run, but is still trying
to bring a frontal band more eastward into the northern panhandle
for Saturday. The forecast continues to lean more towards the GFS
and Canadian, with this front staying in the central gulf and
dissipating before it reaches the panhandle.

High temperatures will gradually increase through the week,
reaching into the 50s for the northern panhandle, mid 50s for the
central panhandle, and the high 50s and potentially low 60s for
the southern panhandle. Potential sea breezes will keep
temperatures along the water from reaching the maximum potential
highs, but inland, sunny areas are more likely to hit them. Clear
skies also mean low temperatures may drop lower than expected
overnight, though mid 30s to low 40s looks to be the current
trend. Light winds are expected through the period, but clear
skies and warming daytime high temperatures may cause sea breezes
to pick up through the inner channels and for coastal communities
midday through the afternoon. With these clear skies and light
winds, the possibility of isolated fog development through the
early morning hours exists. This will depend on how much moisture
remains through the dry period, as well as potential for a low
marine boundary layer to push in from over the gulf which could
limit initial fog development and instead blanket the outer coast
of the panhandle and into the Icy Strait Corridor with a low cloud
deck. With the potential for on and off showers persisting in the
northern panhandle, if skies manage to clear out overnight, fog
development will be more likely through the Icy Strait Corridor
later in the week once the southern panhandle has had more time to
dry out.

&&

.AVIATION...Majority of the panhandle has improved to VFR
conditions Monday afternoon with daytime heating producing stout sea
breezes at many sites, some enhanced by prevailing onshore flow.
Some showers could still lower conditions to MVFR and produce
some erratic gusty winds, as observed along the outer coast around
Sitka and Yakutat, though these will become more few and far
between as we head into the evening. Another weak system will move
along the northern coast bringing more precipitation and dropping
CIGs to at least MVFR tonight for PAYA, spreading eastward into
Tuesday morning. The southern panhandle is expected to remain
relatively dry, though clearing could allow for some patchy fog
development or low stratus overnight Monday.

&&

.MARINE...
Outside (Gulf and Coastal Waters): High pressure will continue to be
the main weather Gulf and coastal waters with the exception of a
weak low and front moving across the northern gulf this evening.
This front will bring some slight increases to the winds along the
northern Gulf coast. These winds are also expected to shift slightly
out of the south more before returning to the west for the northern
coast. After this front, high pressure will continue to sit in the
gulf and Northern Pacific bringing fairly quiet weather. Seas will
continue to remain elevated through the week though as the westerly
swell continues to keep waveheights elevated.

Inside (Inner Channels): Light winds continue today with the
exception Icy Strait through Lynn Canal which continues to see
elevated winds. These conditions are expected to continue through
this evening with southerly winds remaining for Lynn Canal while
most other locations will see light winds. With high pressure moving
in later this week, north and west winds are expected to develop for
most of the Inner Channels. The exception to this will of course be
Lynn Canal which is expected to see southerly winds. Seas are
expected to be around 2 to 5 ft but could be higher for areas near
ocean entrances.


&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Small Craft Advisory for PKZ012-013-021-022-053-641>644-651-652-
     661>664-671-672.

&&

$$

SHORT TERM...SF
LONG TERM...ZTK
AVIATION...STJ
MARINE...SF

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