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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: 12:15 pm EDT Jul 15, 2026 |
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This Afternoon
 Hot
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Tonight
 Mostly Clear
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Thursday
 Mostly Sunny then Slight Chance T-storms
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Thursday Night
 Chance T-storms
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Friday
 Chance T-storms then Showers
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Friday Night
 Showers then Slight Chance Showers
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Saturday
 Mostly Sunny then Chance T-storms
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Saturday Night
 Chance T-storms
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Sunday
 Sunny
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| Hi 92 °F |
Lo 72 °F |
Hi 92 °F |
Lo 73 °F |
Hi 88 °F |
Lo 72 °F |
Hi 89 °F |
Lo 68 °F |
Hi 84 °F |
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Air Quality Alert
Heat Advisory
Hazardous Weather Outlook
This Afternoon
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Sunny and hot, with a high near 92. Heat index values as high as 102. Light west wind. |
Tonight
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Mostly clear, with a low around 72. Light west wind. |
Thursday
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A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 100. Light west wind. Chance of precipitation is 20%. |
Thursday Night
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A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 73. Calm wind. |
Friday
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A chance of showers and thunderstorms between 7am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Friday Night
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Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 72. Light southwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Saturday
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A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. West wind 5 to 11 mph, with gusts as high as 20 mph. |
Saturday Night
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A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 68. West wind 5 to 8 mph becoming light and variable after midnight. |
Sunday
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Sunny, with a high near 84. North northeast wind 3 to 5 mph. |
Sunday Night
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Mostly clear, with a low around 65. Light and variable wind. |
Monday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. |
Monday Night
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A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. |
Tuesday
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A 20 percent chance of showers. Sunny, with a high near 85. |
Forecast from NOAA-NWS
for Lafayette IN.
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Weather Forecast Discussion
676
FXUS63 KIND 151348
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
948 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
&&
.FORECAST UPDATE...
Issued at 946 AM EDT Wed Jul 15 2026
The forecast is in great shape with only minor adjustments
needed. Look for quiet weather through the day under the
influence of upper ridging and surface high pressure. Plentiful
sunshine aided by large scale subsidence will warm temperatures
into the low 90s by the afternoon hours. This combined with
dewpoints in the upper 60s to low 70s will lead to potentially
dangerous heat. A Heat Advisory is in effect from noon to 8PM EDT
today for north/northeast portions of central Indiana where
slightly higher heat indices are expected. Take extra precautions
if you are outdoors this afternoon. Stay hydrated and take
frequent breaks indoors or in shaded areas.
&&
.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 (12Z TAF Issuance)...
Issued at 701 AM EDT Wed Jul 15 2026
Impacts:
- Variable visibility at most sites this morning and possible again
at LAF tonight
Discussion:
Outside of overnight/early morning fog which could IFR or worse, VFR
conditions are expected.
Fog is ongoing at all sites but IND this morning which should
dissipate shortly after the beginning of the period. With similar
conditions to this past night, fog is likely again at KLAF again
tonight. Visibility will likely vary significantly at times.
Elevated smoke will be across the area, thickest north. Otherwise
some cumulus will pop up again today. Winds will remain less than
7kt and will vary in direction.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for INZ021-029>031-
036>042-046>049.
&&
$$
UPDATE...Melo
AVIATION...KF
DISCUSSION...KF
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