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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: 2:45 am EDT Apr 20, 2026
 
Overnight

Overnight: Widespread frost, mainly after 4am.  Otherwise, mostly clear, with a low around 30. Calm wind.
Frost

Monday

Monday: Widespread frost, mainly before 9am.  Otherwise, sunny, with a high near 57. Calm wind.
Frost then
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 44. Calm wind becoming south 5 to 7 mph after midnight.
Mostly Clear

Tuesday

Tuesday: Mostly sunny, with a high near 75. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Mostly Sunny

Tuesday
Night
Tuesday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 58. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Chance
T-storms
Wednesday

Wednesday: A slight chance of thunderstorms before 8am.  Mostly sunny, with a high near 76. West southwest wind around 7 mph.  Chance of precipitation is 10%.
Slight Chance
T-storms then
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 58. South wind 3 to 5 mph.
Mostly Clear

Thursday

Thursday: Mostly sunny, with a high near 80. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Mostly Sunny

Thursday
Night
Thursday Night: A 30 percent chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 21 mph.
Partly Cloudy
then Chance
Showers
Lo 30 °F Hi 57 °F Lo 44 °F Hi 75 °F Lo 58 °F Hi 76 °F Lo 58 °F Hi 80 °F Lo 63 °F

Hazardous Weather Outlook
Freeze Warning
 

Overnight
 
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 30. Calm wind.
Monday
 
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57. Calm wind.
Monday Night
 
Mostly clear, with a low around 44. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
 
Mostly sunny, with a high near 75. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Tuesday Night
 
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
 
A slight chance of thunderstorms before 8am. Mostly sunny, with a high near 76. West southwest wind around 7 mph. Chance of precipitation is 10%.
Wednesday Night
 
Mostly clear, with a low around 58. South wind 3 to 5 mph.
Thursday
 
Mostly sunny, with a high near 80. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Thursday Night
 
A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 21 mph.
Friday
 
A chance of showers and thunderstorms before 8am, then showers likely between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 76. South southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday Night
 
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 80%.
Saturday
 
A 30 percent chance of showers. Partly sunny, with a high near 68.
Saturday Night
 
A 20 percent chance of showers. Partly cloudy, with a low around 48.
Sunday
 
A 20 percent chance of showers. Mostly sunny, with a high near 70.

 

Forecast from NOAA-NWS for Lafayette IN.

Weather Forecast Discussion
858
FXUS63 KIND 200627
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
227 AM EDT Mon Apr 20 2026

.KEY MESSAGES...

- Freeze Warning/Frost Advisory continue until 900 AM

- Warming trend begins on Tuesday, with above normal temperatures
  continuing into the weekend

- Rain chances Tuesday night into Wednesday and again Friday into
  the weekend

&&

.DISCUSSION (Today through Sunday)...
Issued at 227 AM EDT Mon Apr 20 2026

Early This Morning...

Clouds lingering across the far southern forecast area may lower the
odds of frost, with the clouds keeping temperatures up. However,
with some decrease expected, can`t rule out some patchy frost still
forming near sunrise. Will let the Frost Advisory ride as is.

Today through Tuesday...

Surface high pressure will build into the area. Subsidence will keep
skies sunny to mostly sunny, with perhaps some passing high clouds.
Winds will be light with the high nearby. Temperatures will top out
in the middle 50s to lower 60s.

Tonight, upper heights will rise some with an upper trough
continuing to exit east of the area. The high will move off to the
east, allowing light southeast winds. These will help bring warmer
temperatures, with lows from around 40 to the mid 40s.

Warm advection will kick in on Tuesday, bringing a return to above
normal temperatures in the middle 70s.

Tuesday night into Thursday...

A cold front will attempt to move into central Indiana as an upper
wave moves through. Moisture doesn`t look great with most of the
Gulf cut off by high pressure. Will bring some slight chance to
chance category PoPs in Tuesday night and linger them into Wednesday
as the front lingers. Highs will be in the 70s.

Upper ridging will briefly build in for Thursday, providing dry and
warmer conditions. Highs will be around 80.

Friday and beyond...

An upper trough across central portions of the country will eject
impulses at times and keep chances for rain across the area Friday
into early next week. At the moment, the best chances for rain look
to be around Friday with a cold front. Uncertainty is relatively
high after that on any specifics of PoPs or timing with differing
solutions in how the upper impulses will move through.

Temperatures look to remain near normal to above normal, but those
will depend on coverage and timing of any rain, as well as if any
colder air gets pulled down from the north.

&&

.AVIATION (06Z TAF Issuance)...
Issued at 1255 AM EDT Mon Apr 20 2026

Impacts:

- None

Discussion:

VFR conditions are expected through the period. Mid level clouds
will exit the sites early in the period. Otherwise, mainly few to
scattered high clouds will be around.

With surface high pressure building in, winds will be light through
much of the period. Variable direction will become southeast this
evening.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
Freeze Warning until 9 AM EDT this morning for INZ021-028>031-
035>049-054>057.

Frost Advisory until 9 AM EDT this morning for INZ051>053-
060>065-067>072.

&&

$$

AVIATION...50
DISCUSSION...50
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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