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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: 5:15 pm EDT Jul 2, 2026 |
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Tonight
Mostly Clear
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Friday
Sunny then
Slight Chance
T-storms
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Friday
Night
Showers
Likely
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Independence
Day
Slight Chance
T-storms then
Showers
Likely
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Saturday
Night
Showers
Likely then
Chance
T-storms
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Sunday
Chance
T-storms then
T-storms
Likely
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Sunday
Night
T-storms
Likely
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Monday
Slight Chance
Showers then
Slight Chance
T-storms
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Monday
Night
Slight Chance
T-storms then
Partly Cloudy
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| Lo 74 °F |
Hi 92 °F |
Lo 72 °F |
Hi 89 °F |
Lo 70 °F |
Hi 86 °F |
Lo 66 °F |
Hi 84 °F |
Lo 65 °F |
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Extreme Heat Warning
Hazardous Weather Outlook
Tonight
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Mostly clear, with a low around 74. Southwest wind 5 to 8 mph becoming calm in the evening. |
Friday
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A 10 percent chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 92. Heat index values as high as 103. Southwest wind 3 to 8 mph. |
Friday Night
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Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 72. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Independence Day
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A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Saturday Night
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Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 70. Light south southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday
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Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday Night
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Showers and thunderstorms likely before 2am, then a slight chance of showers. Partly cloudy, with a low around 66. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. |
Monday
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A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%. |
Monday Night
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A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 10%. |
Tuesday
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Mostly sunny, with a high near 84. Calm wind becoming north northeast around 5 mph in the afternoon. |
Tuesday Night
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Partly cloudy, with a low around 66. |
Wednesday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. |
Wednesday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. |
Thursday
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A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. |
Forecast from NOAA-NWS
for Lafayette IN.
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Weather Forecast Discussion
616
FXUS63 KIND 021824
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
224 PM EDT Thu Jul 2 2026
.KEY MESSAGES...
- Peak afternoon heat index values between 105 to 110 through Friday
- Extreme Heat Warning in effect through 8 PM Friday
- Thunderstorm chances will increase Friday through the holiday
weekend
- Isolated damaging wind gusts and localized flooding are the
primary threats with thunderstorms
&&
.DISCUSSION (This evening through Thursday)...
Issued at 222 PM EDT Thu Jul 2 2026
Overview.
An intense heat wave will continue across central Indiana through
Friday with dangerously hot and humid conditions expected. The
Extreme Heat Warning continues through 8pm Friday with peak heat
index values of 105 to 110 possible each afternoon and little to no
relief from the heat overnight. Look for some slight relief this
holiday weekend into early next week as storm chances begin to
increase.
Today through Friday night...
Upper ridging will continue to break down through the end of the
week allowing for rain chances to eventually return late in the day
Friday from an approaching shortwave. While the ridge should break
down, the hot and humid airmass is already in place so look for
dangerously hot conditions to continue through Friday with little
relief overnight.
Look for large scale subsidence to keep weather conditions mostly
quiet through much of the day Friday. Isolated diurnal convection
can then be expected towards the late afternoon or evening hours as
subsidence decreases. Greater coverage of storms appears possible
towards NW counties due to stronger forcing from the approaching
wave. Deep-layer wind shear for storm organization appears weak, but
strong destabilization and steep low-level lapse rates could support
isolated damaging wind gusts Friday afternoon or evening. Storm mode
will likely be short lived pulse thunderstorms or loosely organized
multicell clusters.
Saturday through early next week...
Guidance depicts a few shortwaves moving through aloft during the
period. Weakening large scale subsidence and at least modest
dynamics from the approaching impulses will provide greater
opportunities for convection, particularly over the weekend. The
greatest storm chances can be expected during the afternoon and
evening hours with strong daytime heating atop an anomalously moist
PBL.
Isolated strong to severe storms are possible given strong
destabilization each afternoon. Forecast soundings also show very
steep lapse rates with high DCAPE values. The primary threat would
be isolated damaging wind gusts from microbursts in the weakly
sheared environment, mainly during the afternoon or evening hours. A
few models also still suggest the potential for a few MCSs to
develop near the region over the weekend. Confidence on this
scenario remains limited due to varying model solutions, but overall
flow could allow for any storm cluster to propagate towards central
Indiana supporting the potential for isolated damaging wind gusts.
Weak deep-layer shear should tend to limit maintenance of any MCS or
storm cluster.
Humid conditions will continue through the weekend while
temperatures remain hot or very warm. Some slight relief from the
heat can be expected this weekend into early next week with
additional chances for convection. Guidance also depicts a front
associated with a more organized shortwave pushing through the area
early next week. ECMWF and GEFS members differ on exact timing and,
but the boundary will likely reinforce low convective chances along
with helping to trend temperatures closer to seasonal averages.
&&
.AVIATION (18Z TAF Issuance)...
Issued at 222 PM EDT Thu Jul 2 2026
Impacts:
- None
Discussion:
VFR conditions expected through the TAF period outside of a low
chance for patchy ground fog during the early morning hours. Mostly
clear skies expected through the TAF period with diurnally driven cu
during the afternoon hours. Winds will generally be south/
southwesterly less than 10 kt and lighter overnight.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
Extreme Heat Warning until 8 PM EDT Friday for INZ021-028>031-
035>049-051>057-060>065-067>072.
&&
$$
AVIATION...KF
DISCUSSION...Melo
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