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Marion, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Marion IN
National Weather Service Forecast for: Marion IN
Issued by: National Weather Service Northern Indiana
Updated: 2:46 am EDT Apr 25, 2025
 
Overnight

Overnight: A 30 percent chance of showers.  Mostly cloudy, with a low around 60. South wind around 5 mph.
Chance
Showers

Friday

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 72. South wind 5 to 10 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Chance
Showers then
Showers
Friday
Night
Friday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 45. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

Saturday

Saturday: Mostly sunny, with a high near 60. North wind around 10 mph, with gusts as high as 20 mph.
Mostly Sunny

Saturday
Night
Saturday Night: Mostly clear, with a low around 40. North wind 5 to 10 mph.
Mostly Clear

Sunday

Sunday: Sunny, with a high near 66.
Sunny

Sunday
Night
Sunday Night: Mostly clear, with a low around 47.
Mostly Clear

Monday

Monday: Sunny, with a high near 78.
Sunny

Monday
Night
Monday Night: A 20 percent chance of showers after 2am.  Mostly cloudy, with a low around 67.
Partly Cloudy
then Slight
Chance
Showers
Lo 60 °F Hi 72 °F Lo 45 °F Hi 60 °F Lo 40 °F Hi 66 °F Lo 47 °F Hi 78 °F Lo 67 °F

 

Overnight
 
A 30 percent chance of showers. Mostly cloudy, with a low around 60. South wind around 5 mph.
Friday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 72. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 45. Northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
Mostly sunny, with a high near 60. North wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
 
Mostly clear, with a low around 40. North wind 5 to 10 mph.
Sunday
 
Sunny, with a high near 66.
Sunday Night
 
Mostly clear, with a low around 47.
Monday
 
Sunny, with a high near 78.
Monday Night
 
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 67.
Tuesday
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Tuesday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Wednesday
 
A 30 percent chance of showers. Partly sunny, with a high near 67.
Wednesday Night
 
A chance of showers. Mostly cloudy, with a low around 52.
Thursday
 
A chance of showers. Mostly cloudy, with a high near 69.

 

Forecast from NOAA-NWS for Marion IN.

Weather Forecast Discussion
774
FXUS63 KIWX 250522
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
122 AM EDT Fri Apr 25 2025

.KEY MESSAGES...

- Increasing chances (20-30%) for showers and thunderstorms
  later tonight through Friday morning.

- Showers and thunderstorms will be most widespread Friday
  afternoon and evening (70% chance).

- Cool on Saturday with highs near 60 but becoming very warm
  thereafter.

&&

.DISCUSSION...
Issued at 215 PM EDT Thu Apr 24 2025

High pressure overhead suppresses rain chances for this afternoon and
early this evening. Large dew point depressions of 30 degrees are
noted at many stations. Moisture advection is underway, however,
along the Ohio River valley where dew points are in the 60s. This
airmass lifts north through the remainder of the day on the westward
edge of a Southeast US Ridge. RH values improve through the column
overnight, primarily after 2am EDT which is when the chance for
isolated and showers and thunderstorms enters the forecast. CAMs are
incredibly varied in their coverage of showers and storms, likely
owing to weak forcing beyond the implied warm front. Upper-level
forcing improves after daybreak Friday as the Canadian trough nears
and surface low pressure over the Plains arrives. Forecast soundings
are generally unimpressive, mainly due to a lack of shear. Thus,
severe weather is not anticipated Friday. Remaining mild with highs
well into the 70s.

A cold front moves through overnight Friday and any lingering
showers and storms will depart after daybreak Saturday. Relatively
cool with highs only near 60 (cooler lakeside) followed by lows
Saturday night in the upper-30s. Dew point depressions may be large
enough to fend off frost.

The next item of interest is the chance of thunderstorms Tuesday.
Cluster analysis reveals differing speeds and strength of a positive-
tilt 500mb trough moving across the northern states. While the
trough is somewhat broad, the 500-mb wind field is favorable locally
with our area residing near the right entrance region. Pre-frontal,
early-day convection could muddy the waters here; something that
won`t be resolved until 24-hours in advance. Initial mesoscale
ingredients appear favorable for severe thunderstorms, but with 16-
20+ model cycles to go until Tuesday evening, plenty of time to
monitor the trends in guidance.

&&

.AVIATION /06Z TAFS THROUGH 06Z SATURDAY/...
Issued at 122 AM EDT Fri Apr 25 2025

VFR conditions will persist through the morning with abundant
mid/upper level clouds thanks to approaching shortwave. Marginal
instability in a moist environment will support numerous showers
and storms by the afternoon. There remains a lot of uncertainty
in the timing with storms possible as early as 16Z and as late
as 01Z. Kept TEMPO TSRA mention in the middle which has the best
support among hi-res guidance (19-23Z). MVFR (possibly IFR)
stratus will then build south Friday night given increasing
postfrontal CAA and plenty of residual boundary layer moisture.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...Small Craft Advisory from 5 PM this afternoon to 8 PM EDT
     Saturday for LMZ043-046.

&&

$$

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






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