Jeffersonville, Indiana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

787
FXUS63 KLMK 301046
AFDLMK

Area Forecast Discussion
National Weather Service Louisville KY
646 AM EDT Mon Jun 30 2025

.KEY MESSAGES...

* Showers and storms possible mainly this afternoon, with rain
  chances lingering tonight into Tuesday.

* Less humid conditions arrive Wednesday and Thursday.

* Turning hot and muggy again next weekend, with storm chances
  returning.

&&

.SHORT TERM /THROUGH TUESDAY/...
Issued at 358 AM EDT Mon Jun 30 2025

Upper shortwave trof over the Dakotas will push east today and cross
the Great Lakes on Tuesday, driving a sfc cold front through the
Ohio Valley. Subtle disturbances ahead of it will interact with the
tropical air mass in place to trigger showers and storms today. Less
confidence in the usual diurnal timing today, as some of the hi-res
models try to bring a wave of convection through the area later this
morning. Coverage at any given time will likely be no more than
scattered, but most areas will see showers or storms at some point.
Stronger lapse rates and around 2000 J/kg of CAPE will support pulse
storms capable of producing marginally severe gusts in wet
microbursts. With the approaching front, storms could persist into
the evening but would likely diminish in intensity with the loss of
heating.

Cold front moves through southern Indiana late tonight and most of
Kentucky Tuesday morning, but the less humid air mass lags a bit
behind in the absence of a strong post-frontal surge. Could see
showers and storms Tuesday morning, mainly in east-central and south-
central Kentucky. Overall it`s truly a transition day as we`ll have
post-frontal NW winds but will remain on the muggy side.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Issued at 358 AM EDT Mon Jun 30 2025

Less humid air will filter in as sfc high pressure settles into the
mid-Mississippi Valley. Heights aloft don`t drop much so temps will
remain near normal for mid-summer, but dewpoints in the lower/mid
60s Wed-Thu will be a modest break from typical July humidity.

By Independence Day the dewpoints start to rise again as the sfc
high retreats to our east and an amplifying upper ridge builds
overhead. Models are showing some hints of a warm front to focus
convection, but that would mainly be to our north in Indiana and
into Ohio and may not even have mentionable precip chances over most
of our area.

Sat-Sun will see highs again reaching the 90s with dewpoints surging
into the 70s as the upper ridge continues to build over the Red
River Valley and noses into the Ohio Valley. Daily chances for
showers and storms also return with the juicy air mass.

&&

.AVIATION /12Z TAFS THROUGH 18Z TUESDAY/...
Issued at 646 AM EDT Mon Jun 30 2025

We have seen a smattering of showers and storms develop in SW
Indiana and in the Pennyrile, and brought MVFR conditions to HNB
within the last hour. Could see this get into SDF around issuance
time, so will be a last-minute call. Cigs already MVFR and will
likely drop below 2000 feet for at least part of the morning, and
linger behind any thunderstorms. Near-surface stability should limit
gustiness from all but the strongest cells, and any brief
significant gusts would need to be handled mainly by partner calls
if it appears imminent. Looks like this morning wave will pass north
of BWG and might not make it to LEX or RGA.

Stronger SW winds this afternoon with a solid 10-12 kt and frequent
gusts approaching 20 kt. Still expecting pop-up storms after 18Z,
which we`ll handle with a PROB30 in the TAFs with IFR vis mentioned.
Tried to key on the most probable time frame, though precip could
linger longer into the evening especially at LEX and RGA.

VFR conditions under mid-level cigs and light SW winds tonight.
Can`t rule out a stray shower but not enough confidence to include
in the TAFs. Wind shift to west in the SDF planning period as the
cold front moves in Tuesday morning.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...None.
IN...None.

&&

$$

SHORT TERM...RAS
LONG TERM...RAS
AVIATION...RAS