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Lafayette, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Lafayette IN
National Weather Service Forecast for: Lafayette IN
Issued by: National Weather Service Indianapolis, IN
Updated: 10:41 pm EDT Apr 22, 2026
 
Tonight

Tonight: Mostly clear, with a low around 57. South southwest wind 3 to 5 mph.
Mostly Clear

Thursday

Thursday: Sunny, with a high near 79. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.
Sunny

Thursday
Night
Thursday Night: A slight chance of showers between 2am and 5am, then a slight chance of showers and thunderstorms after 5am.  Partly cloudy, with a low around 62. South wind around 8 mph.  Chance of precipitation is 20%.
Partly Cloudy
then Slight
Chance
T-storms
Friday

Friday: Showers and thunderstorms likely before 11am, then showers likely between 11am and 2pm, then showers and possibly a thunderstorm after 2pm.  High near 72. South wind 10 to 13 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely then
Showers
Friday
Night
Friday Night: Showers and thunderstorms before 11pm, then a chance of showers.  Low around 53. West southwest wind around 7 mph becoming northwest after midnight.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers then
Chance
Showers
Saturday

Saturday: A 10 percent chance of showers before 8am.  Sunny, with a high near 71. North wind 6 to 10 mph, with gusts as high as 18 mph.
Slight Chance
Showers then
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 49. East northeast wind 3 to 7 mph.
Mostly Clear

Sunday

Sunday: Mostly sunny, with a high near 73. East wind 5 to 8 mph.
Mostly Sunny

Sunday
Night
Sunday Night: A 20 percent chance of showers after 2am.  Mostly cloudy, with a low around 57. East wind 6 to 9 mph, with gusts as high as 20 mph.
Mostly Cloudy
then Slight
Chance
Showers
Lo 57 °F Hi 79 °F Lo 62 °F Hi 72 °F Lo 53 °F Hi 71 °F Lo 49 °F Hi 73 °F Lo 57 °F

Hazardous Weather Outlook
 

Tonight
 
Mostly clear, with a low around 57. South southwest wind 3 to 5 mph.
Thursday
 
Sunny, with a high near 79. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.
Thursday Night
 
A slight chance of showers between 2am and 5am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 62. South wind around 8 mph. Chance of precipitation is 20%.
Friday
 
Showers and thunderstorms likely before 11am, then showers likely between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 72. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
Showers and thunderstorms before 11pm, then a chance of showers. Low around 53. West southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
A 10 percent chance of showers before 8am. Sunny, with a high near 71. North wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
 
Mostly clear, with a low around 49. East northeast wind 3 to 7 mph.
Sunday
 
Mostly sunny, with a high near 73. East wind 5 to 8 mph.
Sunday Night
 
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 57. East wind 6 to 9 mph, with gusts as high as 20 mph.
Monday
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 74. South southeast wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
Monday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Tuesday
 
A 30 percent chance of showers. Partly sunny, with a high near 66.
Tuesday Night
 
Partly cloudy, with a low around 48.
Wednesday
 
A 20 percent chance of showers. Partly sunny, with a high near 65.

 

Forecast from NOAA-NWS for Lafayette IN.

Weather Forecast Discussion
014
FXUS63 KIND 222354
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
754 PM EDT Wed Apr 22 2026

.KEY MESSAGES...

- Isolated strong storms are possible late this afternoon/evening,
  with gusty winds and hail across far N-NE portions of central
  Indiana.

- Rain and thunder chances Friday and Friday night again next and
  again late Monday. Threat for severe weather is greatest on
  Monday.

- Near to above normal temperatures through early next week.

&&

.MESOSCALE UPDATE...
Issued at 224 PM EDT Wed Apr 22 2026

A subtle shortwave trough moving through the Great Lakes, combined
with a pocket of deep moist convergence supported the development of
convection over southern Lake Michigan several hours ago. This
activity has recently moving into NW Indiana. Deep shear vectors
support a SE motion into NE portions of the state where a moderate
instability axis exists (MLCAPE from 1500-2000 J/K). Surface
analysis shows dewpoints along this axis running from 58-62F which
include the far north-northeast portion of central Indiana. Storm
mode should be mostly multicellular, with the threat for marginally
severe hail fairly low, and mainly supported by fairly steep mid
level lapse rates around 7 C/KM.

However any localized backing of the surface winds may support
effective bulk shear values to briefly peak up above 35 kts with
greater updraft intensity and hail approaching 1 inch in diameter.
An axis of DCAPE from 800-900 J/KG extends across northern portions
of central Indiana into NE Indiana. With storm mergers ongoing and
expected to continue, damaging winds appears to be the primary
threat. Current activity is expected to get very close to far NE
portions of central IN in the 22-00Z time period. Some of the CAM
guidance suggests that activity may build SW into the instability
axis and graze more of the northern counties, but lack of
substantial tcu development on the SW flank and copious low cloud
deck in this area limits confidence on this scenario.

&&

.DISCUSSION (This evening through Wednesday)...
Issued at 326 PM EDT Wed Apr 22 2026

Rest of this afternoon/early evening....

See the most recent mesoscale update for current thinking on storm
evolution and severe weather potential impacts to far north-NE
portions of central Indiana late this afternoon.

Tonight...

With loss of daytime heating and passage of the weak shortwave
trough, thunderstorm chances are expected to end by 04Z. Mostly
clear skies and light winds will be the rule as high pressure
centered over the SE states becomes reinforced with the ridge axis
from the surface up through mid levels extending across the region.

Thursday...

A shortwave trough will eject out of the Rockies into the Plains on
Thursday. As surface pressure falls increase over the MS/MO valleys,
increasing gradient winds will result with S-SW wind gusts from 20-
25 mph during the afternoon with temperatures once again well above
normal from 75-80F. Convection will rapidly develop and intensify
over the Plains during the afternoon along an associated cold front.

Thursday Night...

Convection will move quickly east into the MS valley supported by a
40-50 kt low level jet and ample instability (MUCAPE 1000-2000 j/kg).
There is varying degrees of placement on the leading edge of
precip/TS potential into western portions of central Indiana towards
12Z Friday. Have opted with a slightly slow solution generally
slower than the HREF blend and more in line with the operational
Euro model with only slight chance late.

Friday/Friday Night...

Cloud cover and potential for remnant showers/TS and consequent
marginal mid level lapse rates will likely be the mitigating factors
for a more substantial severe threat. However, with a frontal
boundary crossing central Indiana during the early-mid afternoon,
and moderately strong kinematic fields, greater destabilization may
favor a slight risk for severe weather in later SPC outlooks. In the
wake of the system Friday, there is some indication of an MCV coming
out of KS/MO to graze southern central Indiana Friday night. Have
upped PoPs across southern portion of the forecast area to account
for this potential.

Saturday through Sunday...

Fairly quiet weather will be the rule during the period as high
pressure build southeast behind a cold front and intensifies over
the Great Lakes. Another strong mid-upper level shortwave will move
into the western CONUS during the period as a prelude to more active
weather for central Indiana.

Monday...

A vigorous and fast moving shortwave trough will move out of the
Plains and into the MS valley during the day. Fairly strong
kinematic fields combined with sufficient instability favor the
threat for all hazards severe weather along a cold front and
potentially pre-frontal confluence bands as the primary surface low
pressure moves into the western Great Lakes. Present indications are
this activity will push towards central Indiana towards early
evening, but this far out timing remains uncertain. SPC has a Day 5
slight risk out just south of the forecast area. Expectation is for
this risk to eventually be shifted to include much if not all of
central Indiana in later outlooks.

Tuesday/Wednesday...

Quieter weather returns Tuesday with temps cooling to near normal
and drier conditions in the wake of Monday/Monday night convective
event. Another shortwave is progged to move out of the desert SW
into the central and southern plains with some potential for
showers/TS for central Indiana late Wednesday. Timing and coverage
is even more uncertain for this event, so for now low end PoPs seem
reasonable.

&&

.AVIATION (00Z TAF Issuance)...
Issued at 754 PM EDT Wed Apr 22 2026

Impacts:

- Wind gusts around 20kt Thurs afternoon

Discussion:

Fairly tranquil conditions at present across the TAF sites with VFR
conditions and winds generally out of the SW from 8-12 kts.

Overnight, winds will be generally 4-6 kts from the SW with mostly
clear skies. Thursday will see VFR conditions with gradually
increasing SW winds during the afternoon with a few gusts around 20
kts.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

AVIATION...KF
DISCUSSION...Crosbie
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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