Port St. Lucie, Florida 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

293
FXUS62 KMLB 071841
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
241 PM EDT Sun Jun 7 2026

...New KEY MESSAGES, DISCUSSION, MARINE...

.KEY MESSAGES...
Issued at 241 PM EDT Sun Jun 7 2026

- Dry conditions persist across east central Florida through at
  least Monday, with a slow increase in moisture leading to
  greater rain and storm chances from Tuesday onward.

- Temperatures continue to warm into the low to mid 90s across
  the interior through Monday, trending closer to normal values
  into the middle of this week.

- A moderate risk of rip currents is forecast at all east central
  Florida beaches; if heading to the beach, be sure to swim near
  a lifeguard!

&&

.DISCUSSION...
Issued at 241 PM EDT Sun Jun 7 2026

Current-Tonight... Surface high pressure is analyzed over the
western Atlantic with its ridge axis extended over portions of north
Florida. Dry conditions persist, and PWAT imagery has shown a tongue
of dry air (PWAT ~0.75-0.9") extending over the I-4 corridor early
this afternoon. Modest moisture observed further south (PWAT ~1.0-
1.30") has allowed a scattered cu field to develop, but a deep dry
layer above 850mb should continue to suppress any shower or storm
development through the remainder of the day. Temperatures have
spread the 80s so far this afternoon with areas of the interior
forecast to reach the low 90s during peak heating. East-southeast
winds around 10 mph behind the sea breeze this afternoon are
forecast to become light and variable overnight. Low temperatures
will remain mild along the coast, particularly south of the Cape
where values are forecast in the mid to upper 70s. Inland lows
should spread the low 70s.

Monday-Tuesday... Ridging aloft remains anchored over the eastern
U.S. on Monday. The pattern begins to shift Tuesday as troughing
digs across the western U.S. lifting a shortwave through the midwest
and Great Lakes region. The dominant ridge axis retreats south and
east as its structure is forced to flatten across the southern
U.S. and into the western Atlantic. Height falls and a more broad
structure of the ridge will allow pulses of shortwave energy to
pass overhead on Tuesday. At the surface, a ridge axis extending
from the western Atlantic and across north Florida gradually
broadens before high pressure becomes reinforced along the mid
Atlantic seaboard on Tuesday. Influence of high pressure aloft
keeps a layer of dry air between 700-500 mb on Monday, suppressing
chances for organized shower or and storm development. Slight
moistening of the layer could then allow low (~20%) rain chances
to return across portions of the area on Tuesday.

Onshore flow will keep temperatures near normal along the coast on
Monday with highs ranging the upper 80s to low 90s. Further inland,
temperatures peak slightly above normal with many locations reaching
the mid 90s. A Moderate HeatRisk will be present throughout the I-95
and I-4 urban corridors on Monday with a Major HeatRisk outlined for
portions of southern Lake and western Orange counties. Residents and
visitors will need to remain adequately hydrated and take breaks
inside an air-conditioned building if outdoors for extended periods
of time. Temperatures fall a few degrees Tuesday with an increase in
cloud cover, and highs are forecast to range the mid to upper 80s
across most of east central Florida.

Wednesday-Saturday... Surface high pressure centered off the mid
Atlantic coast on Wednesday retreats seaward through the period.
Local flow shifts southeast to south into Thursday allowing for
greater moisture advection across the region. Despite wide
uncertainty in the larger synoptic pattern, confidence in moisture
advection should at least support an increasing trend in daily rain
chances. The latest blend of model guidance suggests scattered
showers and storms returning to east central Florida Wednesday with
sequential bumps in rain chances each day into the weekend. High
temperatures hold near normal through the period, mostly ranging the
mid to upper 80s along the coast and the low 90s inland. However,
slightly warmer temperatures build along the coast Friday and
Saturday (low 90s). Added humidity looks to put heat index values in
the mid to upper 90s each day with a few locations seeing peak heat
index values around 100F.

&&

.MARINE...
Issued at 241 PM EDT Sun Jun 7 2026

High pressure will maintain favorable boating conditions over the
local waters this week. East-southeast winds continue through mid
week, increasing to 10-15 kts in the afternoon. Seas of 2-3 ft are
forecast to persist. Mostly dry through early Tuesday. Increasing
moisture will then prompt scattered shower and storm chances mid to
late week.

&&

.AVIATION...
(18Z TAFs)
Issued at 134 PM EDT Sun Jun 7 2026

VFR conditions generally expected to continue today through
tomorrow, with an onshore wind prevailing and mostly dry
conditions forecast. Hi-res guidance is even less enthusiastic
for isolated onshore moving sprinkles and light showers along the
Treasure Coast (KVRB-KSUA) into tonight. While this activity still
can`t be completely ruled out, rain chances remain quite low (10%
or less), and will therefore keep any mention out of the TAFs for
the time being.

Easterly winds around 8-12 knots will diminish, becoming mostly
light and variable overnight. Winds then pick up again to 8-12
knots tomorrow afternoon as east coast sea breeze shifts inland.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  71  88  75  86 /   0   0  10  10
MCO  72  93  74  89 /   0  10   0  20
MLB  77  88  78  87 /   0   0  10  10
VRB  76  89  77  88 /   0   0  10  20
LEE  73  93  75  89 /   0  10   0  10
SFB  71  93  73  89 /   0   0  10  10
ORL  73  93  75  89 /   0  10   0  10
FPR  75  88  76  87 /   0   0  10  10

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
&&

$$

DISCUSSION...Law
AVIATION...Weitlich