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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: 3:23 pm EDT May 21, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 68. East northeast wind around 13 mph, with gusts as high as 20 mph.
Mostly Sunny

Tonight

Tonight: Mostly cloudy, with a low around 50. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Mostly Cloudy

Friday

Friday: A 20 percent chance of showers after 2pm.  Mostly cloudy, with a high near 70. East northeast wind around 11 mph, with gusts as high as 20 mph.
Mostly Cloudy
then Slight
Chance
Showers
Friday
Night
Friday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 5am, then showers likely and possibly a thunderstorm after 5am.  Cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

Saturday

Saturday: Showers likely, mainly before 8am.  Mostly cloudy, with a high near 75. North northeast wind 5 to 7 mph becoming northwest in the morning.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Showers
Likely

Saturday
Night
Saturday Night: A 10 percent chance of showers before 8pm.  Mostly cloudy, with a low around 58. Light north wind.
Slight Chance
Showers then
Mostly Cloudy
Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 79. Light and variable wind.  Chance of precipitation is 50%.
Slight Chance
Showers then
Chance
T-storms
Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 59. Calm wind.  Chance of precipitation is 30%.
Chance
T-storms then
Chance
Showers
Memorial
Day
Memorial Day: A 20 percent chance of showers after 8am.  Partly sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Slight Chance
Showers

Hi 68 °F Lo 50 °F Hi 70 °F Lo 58 °F Hi 75 °F Lo 58 °F Hi 79 °F Lo 59 °F Hi 81 °F

 

This Afternoon
 
Mostly sunny, with a high near 68. East northeast wind around 13 mph, with gusts as high as 20 mph.
Tonight
 
Mostly cloudy, with a low around 50. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Friday
 
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 70. East northeast wind around 11 mph, with gusts as high as 20 mph.
Friday Night
 
A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 58. East wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
Showers likely, mainly before 8am. Mostly cloudy, with a high near 75. North northeast wind 5 to 7 mph becoming northwest in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
 
A 10 percent chance of showers before 8pm. Mostly cloudy, with a low around 58. Light north wind.
Sunday
 
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Light and variable wind. Chance of precipitation is 50%.
Sunday Night
 
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%.
Memorial Day
 
A 20 percent chance of showers after 8am. Partly sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
 
Mostly cloudy, with a low around 62. Calm wind.
Tuesday
 
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Lafayette IN.

Weather Forecast Discussion
749
FXUS63 KIND 211904
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
304 PM EDT Thu May 21 2026

.KEY MESSAGES...

- River and stream flooding continues across southern portions of
  Central Indiana.

- Cooler today with a brief break from rain chances, before
  showers and storms return to the forecast Friday into the
  holiday weekend, along with a return to warmer temperatures.

&&

.DISCUSSION (This evening through Thursday)...
Issued at 303 PM EDT Thu May 21 2026

Current surface analysis depicts surface high pressure centered
across the northern Great Lakes stretching down into parts of the
Ohio Valley while a subtle wave moves across Ohio. Mostly cloudy
skies have lingered primarily near the I-70 corridor and south due
to weaker subsidence being further away from the surface high. Some
breaks in the clouds are occurring though thanks to daytime heating
despite the weaker subsidence. Look for quiet weather conditions to
continue through tonight under the influence of surface high pressure
to the north.

A more active pattern develops Friday through the weekend with
multiple disturbances moving across the region. Model guidance
depicts a mid-level shortwave and associated surface low lifting a
warm front northward on Friday leading to increasing rain chances.
Residual subsidence induced dry air will limit rain chances to
mainly south-central IN Friday morning. Moisture surging northward
should then allow for precipitation to overspread the northern half
of central IN during the afternoon hours. Far northwestern counties
may struggle to see more than a few hundredths of QPF due to the dry
air. Weak instability may promote isolated embedded thunderstorms.

Sufficient moisture combined with forcing from the departing first
impulse and another disturbance moving in Saturday will keep
precipitation chances elevated. The highest precipitation chances on
Saturday are focused across the eastern half of the CWA where the
strongest forcing is expected. Instability appears to be weak again
on Saturday, but isolated thunderstorms are possible.

Look for subtle ridging to build in late Saturday into Saturday
night providing quiet weather before yet another shortwave moves in
on Sunday. Sunday morning should start off mostly quiet as ridging
shifts eastward. A shortwave and associated weak surface low will
then move in Sunday afternoon supporting increasing precipitation
chances. Model disagreement regarding the evolution of this
relatively weak system leads to lower confidence in convective
coverage during the afternoon hours. However, most guidance depicts
modest forcing and moisture advection promoting scattered convection
as the PBL heats up ahead of a weak frontal boundary.

An unsettled pattern is likely to continue through next week with
daily chances for showers and storms. Long range guidance depicts
multiple impulses aloft traversing the region while gulf moisture
continues to gradually advect northward. Look for temperatures to
moderate Friday through the weekend. Highs are expected to reach the
low 80s by Sunday with highs in the 80s for much of next week.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 130 PM EDT Thu May 21 2026

Impacts:

- MVFR ceilings at BMG through this afternoon with periods of MVFR
  possible at HUF

- ENE winds as much as 10-15KT with a few higher gusts possible
  through 20Z

- MVFR ceilings likely developing Friday with numerous showers at
  the very end of the period, embedded storms cannot be ruled out

Discussion:

An inversion aloft north of a stalled front to our southeast is
trapping low level moisture and promoting low clouds across the
area. MVFR will prevail much of the day at BMG, with periods
possible at HUF. All sites should see prevailing VFR by this evening
if they have not already by that time.

Winds will generally be out of the east-northeast (040-080 degrees)
as high as 10-15KT at times. LAF/IND may see gusts between 18-23kt
through about 20Z before winds weaken slightly. MVFR ceilings will
likely develop Friday with numerous showers expected at the very end
of the period. Embedded storms cannot be ruled out, mainly near BMG.


&&

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

$$

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






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