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Lafayette, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Lafayette IN
National Weather Service Forecast for:
Lafayette IN
Issued by: National Weather Service Indianapolis, IN |
| Updated: 2:45 pm EDT Jul 5, 2026 |
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This Afternoon
 Scattered T-storms
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Tonight
 Scattered T-storms then Mostly Cloudy
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Monday
 Mostly Cloudy then Chance T-storms
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Monday Night
 Slight Chance T-storms then Partly Cloudy
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Tuesday
 Sunny
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Tuesday Night
 Mostly Clear
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Wednesday
 Sunny
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Wednesday Night
 Mostly Clear
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Thursday
 Chance T-storms
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| Hi 80 °F |
Lo 66 °F |
Hi 81 °F |
Lo 64 °F |
Hi 83 °F |
Lo 63 °F |
Hi 85 °F |
Lo 67 °F |
Hi 86 °F |
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Hazardous Weather Outlook
This Afternoon
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Scattered showers and thunderstorms. Mostly cloudy, with a high near 80. Northwest wind around 5 mph. Chance of precipitation is 30%. |
Tonight
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Scattered showers and thunderstorms before 11pm, then isolated showers between 11pm and midnight. Mostly cloudy, with a low around 66. North wind 3 to 7 mph. Chance of precipitation is 40%. |
Monday
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A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 81. North northeast wind 5 to 7 mph. |
Monday Night
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A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. North wind 5 to 7 mph becoming calm in the evening. |
Tuesday
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Sunny, with a high near 83. Calm wind becoming north northeast around 5 mph in the afternoon. |
Tuesday Night
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Mostly clear, with a low around 63. Calm wind. |
Wednesday
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Sunny, with a high near 85. Calm wind. |
Wednesday Night
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Mostly clear, with a low around 67. Light south southwest wind. |
Thursday
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A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind 5 to 9 mph. |
Thursday Night
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Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. |
Friday
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Showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 60%. |
Friday Night
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Showers likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. |
Saturday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. |
Forecast from NOAA-NWS
for Lafayette IN.
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Weather Forecast Discussion
027
FXUS63 KIND 051841
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
241 PM EDT Sun Jul 5 2026
.KEY MESSAGES...
- Afternoon and evening scattered storms again today and Monday,
severe weather is not expected
- Slow moving storms may produce pockets of flooding
- More unsettled pattern develops Thursday into next weekend with
cooler temperatures
&&
.DISCUSSION (This Evening through Sunday)...
Issued at 241 PM EDT Sun Jul 5 2026
An exceptionally moist airmass remains over the Ohio Valley with
continued risks for mainly afternoon and evening convection through
Monday as an upper wave slowly drifts through. Upper level ridging
will briefly reestablish as the wave aloft and deeper moisture shift
south for midweek. The approach of a cold front which is likely to
stall in the region will bring a return of unsettled weather late
week into the weekend.
This Afternoon through Tuesday Night
Stratus from this morning has been stubborn to say the least but
have seen a gradual mixing out into a broken stratocu field over the
last few hours. Temp rises were stunted as a result but as of 18Z
readings now range from the upper 70s to mid 80s.
The thick cloud deck from earlier delayed destabilization across the
forecast area but mesoanalysis indicating that 500-1000 j/kg MLCAPE
now present. With a weaker upper wave over the region and abundant
moisture lingering within the boundary layer...starting to see
isolated convection develop. Just based on where the greatest
instability and highest PWATs lie...the eastern half of the forecast
area in particular will be the focus for greatest convective
coverage into the evening. That being said...potential for a shower
or storm remains over all of central Indiana into the evening.
To this point convection has been shallow in nature with the KIND
ACARS sounding showing a cap present in the 825-750mb layer.
Additional heating over the next few hours should erode that cap a
bit but in the absence of substantial forcing and shear...convection
will struggle to maintain height and intensity. Any stronger cell
will carry a threat for locally gusty winds as cores collapse...but
the slow storm motion supports torrential rainfall as the primary
threat from convection through the evening.
Coverage will again diminish after sunset although may see a few
showers linger across the northeast into the early overnight as a
deeper moisture fetch curls in from the northeast. This will also
bring a return of lower stratus and patchy fog as a shallow
nocturnal inversion establishes. Monday will be a near carbon copy
of today with morning stratus being slow to mix out. As filtered sun
develops in the afternoon with the upper wave lingering over the
region...isolated to scattered convection will again develop focused
from mid afternoon into the evening. As the upper trough slips south
Monday night...weak high pressure and drier air will advect into the
region from the north. With ridging aloft expanding into the area as
well...the convective threat will be forced closer to the Ohio River
on Tuesday with only isolated convection possible in southern
counties during the afternoon.
Highs Monday and Tuesday will largely be confined to the lower and
mid 80s...with Monday as the cooler of the two days due to the
expected cloud cover.
Wednesday Through Sunday
The brief ridging aloft that pokes into the area on Tuesday will be
in the process of retreat on Wednesday as mid level heights buckle
from the north and a weak upper level low drifts through the Ohio
Valley. Enough dry air and subsidence lingering however should limit
afternoon and evening convection substantially with the best threat
for any thunderstorms over southern counties closer to the upper low
and deeper moisture.
The primary feature for the extended will be a cold front set to
drift south into the Ohio Valley on Thursday reestablishing a
broader convective risk for the forecast area. There are increasing
hints that the boundary may get bogged down over the region as it
runs into the flattened ridge to the south...a typical mid-summer
pattern when steering currents aloft are poor and surface waves are
weak. With the upper level flow transitioning to northwest as the
core of the heat ridge retrogrades into the Intermountain West...
there is a growing potential for convective clusters to track across
parts of the region late week into next weekend as individual
perturbations aloft interact with the quasi-staionary frontal
boundary.
Detail on placement of the boundary and primary timing of convective
impacts remains inconclusive at this early stage...but daily rain
chances are going to be needed into Saturday at a minimum with
potential for the front to shift further south by Sunday. No strong
signals are present for organized severe weather in the extended at
this time but convection will likely carry a localized risk for
damaging winds/microbursts with any stronger cells. Heavy rainfall
and flooding will again be primary concerns with a deeply saturated
airmass highlighted by PWATS approaching 2 inches.
Temperatures will largely hover near normal for much of the extended
with highs in the 80s. Mid to upper 80s on Wednesday and Thursday
will cool into the weekend. A cooler drier airmass advecting in from
the north late weekend into early next week may allow for highs to
fall back into the upper 70s in spots.
&&
.AVIATION (18Z TAF Issuance)...
Issued at 1154 AM EDT Sun Jul 5 2026
Impacts:
- Improvement to VFR this afternoon and evening.
- Low confidence for additional showers and storms this afternoon
- Potential for additional MVFR to IFR cigs/vsbys tonight
Discussion:
Low pressure over NW Indiana was continuing to provide weak cyclonic
flow across the area along with plentiful MVFR cloud cover. Daytime
heating should allow the low cloud to dissipate, leading to some
isolated afternoon CU development. HRRR shows widely scattered
showers and storms with this feature late this afternoon and
evening. However, confidence is low at this time as cloud cover is
limiting daytime heating and we are running cooler then model
temperature trends.
Any storms will dissipate after sunset, however cyclonic along with
lingering lower level moisture will once again allow for MVFR/IFR
cigs to form overnight with fog.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
AVIATION...Puma
DISCUSSION...Ryan
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