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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: 5:45 am EDT Jul 15, 2026
 
Today

Today: Sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming west southwest around 5 mph in the afternoon.
Hot

Tonight

Tonight: Partly cloudy, with a low around 72. Light west southwest wind.
Partly Cloudy

Thursday

Thursday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms after 5pm.  Mostly sunny and hot, with a high near 92. Calm wind.  Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms
Thursday
Night
Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 72. Calm wind.  Chance of precipitation is 30%.
Chance
T-storms then
Chance
Showers
Friday

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 88. Calm wind becoming west southwest around 5 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Showers
Friday
Night
Friday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am.  Low around 71. West southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers then
Slight Chance
T-storms
Saturday

Saturday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 89. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Mostly Sunny
then Chance
T-storms
Saturday
Night
Saturday Night: A 40 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 69. West wind 3 to 7 mph.
Chance
T-storms

Sunday

Sunday: Sunny, with a high near 86. North wind 3 to 5 mph.
Sunny

Hi 92 °F Lo 72 °F Hi 92 °F Lo 72 °F Hi 88 °F Lo 71 °F Hi 89 °F Lo 69 °F Hi 86 °F

Heat Advisory
Air Quality Alert
Hazardous Weather Outlook
 

Today
 
Sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming west southwest around 5 mph in the afternoon.
Tonight
 
Partly cloudy, with a low around 72. Light west southwest wind.
Thursday
 
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 92. Calm wind. Chance of precipitation is 20%.
Thursday Night
 
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.
Friday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 71. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
 
A 40 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 69. West wind 3 to 7 mph.
Sunday
 
Sunny, with a high near 86. North wind 3 to 5 mph.
Sunday Night
 
Mostly clear, with a low around 68. Light and variable wind.
Monday
 
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Monday Night
 
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
 
A slight chance of thunderstorms. Sunny, with a high near 84. Chance of precipitation is 10%.

 

Forecast from NOAA-NWS for Lafayette IN.

Weather Forecast Discussion
407
FXUS63 KIND 150705
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
305 AM EDT Wed Jul 15 2026

.KEY MESSAGES...

- Generally dry weather and a steady warming trend mid to late week

- Peak heat indices around to slightly above 100 degrees each
  afternoon mid-late week

- Chances for showers and storms return Friday through the weekend,
  primarily during the afternoon and evening

&&

.DISCUSSION (Today through Tuesday)...
Issued at 304 AM EDT Wed Jul 15 2026

High pressure will continue to influence the weather over the region
through at least Thursday, bringing hot and precipitation free
conditions. Highs over the next few days are expected to reach the
low to mid 90s with heat indices near to slightly above 100 degrees.
The stagnant and suppressed air will also lead to greater ozone
and lower air quality for parts of Indiana today.

The high pressure will start to break down by the end of the week,
and models are showing better agreement on an upper wave bringing
good chances for showers and storms Friday. Aloft, NW flow will set
up with a surface low prompting additional precip chances
Saturday. After a brief break in PoPs, models show another system
to move through early to mid next week with a decent chance of
cooler temps moving in behind it.

&&

.AVIATION (06Z TAF Issuance)...
Issued at 152 AM EDT Wed Jul 15 2026

Impacts:

- Variable visibility potentially to IFR/worse at KLAF 09-12Z

Discussion:

Outside of overnight/early morning fog potential, VFR conditions are
expected.

With similar conditions to last night, expect fog to develop at KLAF
after during the early morning hours. Visibility will likely vary
significantly at times, so will go with MVFR with BCFG mention.
Cannot rule out fog at KHUF/KBMG, but feel odds are not high enough
to mention yet.

Elevated smoke will be across the area, thickest north. Otherwise
some cumulus will pop up again Wednesday. Winds will remain less than
7kt and will vary in direction.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from noon today to 8 PM EDT this evening for
INZ021-029>031-036>042-046>049.

&&

$$

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






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