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Greenfield, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Greenfield IN
National Weather Service Forecast for: Greenfield IN
Issued by: National Weather Service Indianapolis, IN
Updated: 2:15 pm EDT Jul 26, 2025
 
This
Afternoon
This Afternoon: Scattered showers and thunderstorms.  Partly sunny, with a high near 89. South southwest wind around 9 mph.  Chance of precipitation is 40%.
Scattered
T-storms

Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am.  Mostly cloudy, with a low around 74. South southwest wind around 7 mph.
Scattered
T-storms then
Chance
Showers
Sunday

Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am.  High near 88. West southwest wind around 7 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely then
T-storms
Sunday
Night
Sunday Night: Showers and thunderstorms before 11pm, then a chance of showers.  Low around 74. West southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
T-storms then
Chance
Showers
Monday

Monday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.
Chance
T-storms

Monday
Night
Monday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 75. Light west wind.
Chance
T-storms then
Mostly Clear
Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 92. Light north wind.
Mostly Sunny
then Slight
Chance
T-storms
Tuesday
Night
Tuesday Night: A 10 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 74. Light northeast wind.
Slight Chance
T-storms

Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 88. Light and variable wind.
Chance
T-storms

Hi 89 °F Lo 74 °F Hi 88 °F Lo 74 °F Hi 91 °F Lo 75 °F Hi 92 °F Lo 74 °F Hi 88 °F

Hazardous Weather Outlook
 

This Afternoon
 
Scattered showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind around 9 mph. Chance of precipitation is 40%.
Tonight
 
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 74. South southwest wind around 7 mph.
Sunday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 88. West southwest wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
Showers and thunderstorms before 11pm, then a chance of showers. Low around 74. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
 
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Light west wind.
Tuesday
 
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Light north wind.
Tuesday Night
 
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 74. Light northeast wind.
Wednesday
 
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 88. Light and variable wind.
Wednesday Night
 
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Northeast wind around 6 mph.
Thursday
 
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Thursday Night
 
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Friday
 
Mostly sunny, with a high near 77.

 

Forecast from NOAA-NWS for Greenfield IN.

Weather Forecast Discussion
430
FXUS63 KIND 261716
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
116 PM EDT Sat Jul 26 2025

.KEY MESSAGES...

- Heat Advisory across portions of central and southern Indiana
  through this evening

- Dangerous heat continues into early next week with additional days
  of greater than 100 degree heat indices likely

- Periodic showers and storms through the weekend with isolated
  flooding and strong winds

&&

.FORECAST UPDATE...
Issued at 936 AM EDT Sat Jul 26 2025

An abundance of mid and high level clouds lingered over much of the
forecast area this morning from the remnants of early morning
convection across the northern part of the state and additional
thunderstorms currently over western Illinois near the Mississippi
River. Have seen a few showers across the forecast area already
otherwise it was dry. 13Z temperatures ranged from the mid 70s to
lower 80s.

Bit of a convoluted forecast for the rest of the day that starts
with the ongoing cloud cover. More substantial clearing exists from
central Missouri into south central Illinois with the expectation of
that spreading east across the southern half of the forecast area by
early afternoon. Further north however...the broad mid and high
level clouds associated with the ongoing convection may keep skies
in a mostly cloudy state well into the afternoon. This would likely
have an impact on eventual highs and perhaps available instability
for convection later on.

Speaking of convection...mesoscale features will be critical again
as they have been the last few days on where storms develop. A
remnant outflow boundary from storms earlier this morning has
settled in a west-east fashion south of I-70 and is likely
influencing the isolated development we have already seen so far
this morning across the central portion of the forecast area. This
is likely to be a focal point for renewed convective development
this afternoon as convective temps are reached. Convection will
again be heavily driven by instability and of a pulse intensity in
the absence of shear. While localized wet microbursts remain a
threat from any collapsing downdraft...torrential rainfall and cloud
to ground lightning will remain the primary concerns for outdoor
activities this afternoon and evening. New model data this morning
continues to highlight a potential for more organized convection to
move into the Wabash Valley from the west by mid to late evening and
will need to monitor trends through late day.

Highs will again be in the upper 80s and lower 90s this afternoon...
but will need to monitor cloud coverage as heating could be limited
slightly over northern counties. Will maintain the Heat Advisory
across the southern half of the forecast area with heat indices
approaching 105 degrees. Zone and grid updates out.

&&

.SHORT TERM (Today and tonight)...
Issued at 255 AM EDT Sat Jul 26 2025

Surface analysis early this morning shows a poorly defined frontal
boundary draped from Central IL northeast to northern Indiana and
MI. Convection over IL was present near this boundary and was
pushing northeast along it. High pressure was found north of the
boundary over Ontario and a second area of high pressure was found
over the southeastern states. The southern high was resulting in a
continued lower level flow of hot and very humid gulf air streaming
into the Ohio Valley. Aloft, water vapor imagery shows a plume of
tropical moisture streaming across TX, northward to IA and MO, and
then northeast to IL, NRN Indiana and MI. the ongoing storms were
staying confined mainly to underneath this plume. An upper level
high pressure system was found over the SE states, resulting in ring
of fire like effects over IL into northern Indiana.

Today...

Little overall change will be expected today across Central Indiana.
The very hot and humid air mass in place across the area will
continue to control our weather as the upper high is suggested to
strengthen and steer potential forcing dynamics and the tropical
plume farther to the north. Forecast soundings once again show a
favorable signature for diurnal convection with steep lapse rates
and CAPE values over 2800 J/KG. Pwats also are favorable with values
in excess of 1.90 inches. HRRR also suggests afternoon shower and
storm development due to these favorable conditions. Thus will once
again include afternoon pops for hit and miss diurnal storms. Heavy
rain will be possible considering the very moist air mass. HRRR
suggests storms dissipating by early evening.

Again high dew points in combination with highs around 90 will
result in heat index values in the low 100s. Ongoing Advisory will
remain.

Tonight...

A few lingering diurnal storms will be possible in the evening
before the rest of the evening looks to remain mostly dry. Models
suggest an organized area of convection and forcing well to the
north of Central Indiana, over northern Indiana and Michigan during
the evening, However, the tail of this system may trigger some
overnight convection across Central Indiana. Confidence for this is
low, but given our continued warm and humid air mass, small chances
for pops will still be necessary for now. Lows overnight will
remain warm and humid, in the middle 70s.

&&

.LONG TERM (Sunday through Friday)...
Issued at 255 AM EDT Sat Jul 26 2025

For much of the long term, central Indiana will sit between an upper
high meandering over the SE states into the central plains and a
large upper low over Canada. This will place the area in a hot and
humid pattern with almost daily chances for showers and storms.
Severe weather looks unlikely with a lack of shear, but can`t rule
out an isolated downburst causing damaging winds. Highs through
midweek are expected to range from the upper 80s to low 90s. With
ample humidity to continue, heat headlines will likely continue as
heat indices near 100-110 will be probable.

By mid to late next week, the upper low over Canada will dip
southward, bringing cooler and drier air to the region. Highs for
late week into the weekend may even max out in the upper 70s for a
day or two, providing a relief to the heat.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 116 PM EDT Sat Jul 26 2025

Impacts:

- Scattered convection  this afternoon and early evening
- Possibility for additional convection at KIND and KLAF overnight
- Renewed storm development Sunday afternoon

Discussion:

Scattered convection steadily increasing in coverage this afternoon
across central Indiana. Should see peak coverage over the next 4-6
hours with brief restrictions at the terminals whenever a shower or
storm passes. Any stronger cell will have the potential for briefly
gusty winds as well. Outside of convection...expect southwest winds
at 10-15kts into the early evening.

Storms will diminish this evening although there is potential for
more organized convection over Illinois to move into the northern
Wabash Valley by late evening with an impact to KLAF and possibly
extend as far as the Indy metro before diminishing overnight. Will
carry PROB30s for this possibility at both KIND and KLAF but
confidence is low in this occurring. One potential scenario could be
that these storms diminish and lay down an outflow boundary
somewhere across central Indiana that would serve as a focal point
for renewed convective development for Sunday afternoon.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for INZ043>047-051>057-
060>065-067>072.

&&

$$

UPDATE...Ryan
SHORT TERM...Puma
LONG TERM...KF
AVIATION...Ryan
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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