Marion, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Marion IN
National Weather Service Forecast for:
Marion IN
Issued by: National Weather Service Northern Indiana |
Updated: 12:31 pm EDT Jul 5, 2025 |
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This Afternoon
 Hot
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Tonight
 Mostly Clear
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Sunday
 Chance T-storms
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Sunday Night
 T-storms Likely then Chance Showers
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Monday
 Chance T-storms
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Monday Night
 Slight Chance T-storms then Partly Cloudy
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Tuesday
 Mostly Sunny
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Tuesday Night
 Mostly Clear
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Wednesday
 Slight Chance Showers then Chance T-storms
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Hi 91 °F |
Lo 72 °F |
Hi 89 °F |
Lo 69 °F |
Hi 83 °F |
Lo 65 °F |
Hi 87 °F |
Lo 68 °F |
Hi 87 °F |
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Hazardous Weather Outlook
This Afternoon
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Sunny and hot, with a high near 91. Southwest wind around 10 mph. |
Tonight
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Mostly clear, with a low around 72. South wind around 5 mph. |
Sunday
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A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 89. Heat index values as high as 96. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
Sunday Night
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Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Monday
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A 30 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 83. Northwest wind around 5 mph. |
Monday Night
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A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. |
Tuesday
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Mostly sunny, with a high near 87. |
Tuesday Night
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Mostly clear, with a low around 68. |
Wednesday
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A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%. |
Wednesday Night
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A 30 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 68. |
Thursday
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A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. |
Thursday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. |
Friday
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A chance of showers and thunderstorms. Partly sunny, with a high near 87. |
Forecast from NOAA-NWS
for Marion IN.
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Weather Forecast Discussion
078
FXUS63 KIWX 051017
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
617 AM EDT Sat Jul 5 2025
.KEY MESSAGES...
- Hot and humid today and Sunday. Highs around 90 with heat indices
around 90 to the mid 90s.
- Frequent chances for showers and thunderstorms this upcoming week
starting Sunday.
- Seasonally warm this upcoming workweek with highs in the 80s.
&&
.DISCUSSION...
Issued at 1257 AM EDT Sat Jul 5 2025
An upper ridge will continue to keep very warm conditions over
the forecast area through this weekend. High temperatures today
and Sunday will generally be in the lower 90s with heat indices
at some locations in northwest Ohio and south of Ft Wayne
approaching the upper 90s. Will continue to mention these high
heat indices in the Hazardous Weather Outlook, but will not
issue a Heat Advisory at this time. Highs will be in the 80s
this upcoming week with heat indices in the 80s to lower 90s.
Very stable mid level lapse rates (4.5C to 5.0C/Km) along with a
sizable low level cap will be over the forecast area today and
will make it difficult for storms to fire, so have kept storms
out of the forecast for today. A weak cold front will arrive
Sunday and reach a very moist airmass over northern Indiana with
precipitable water values around 2.0 inches. Weak low level
flow and a tall and thin CAPE generally less than 1000 J/Kg will
provide an environment for heavy downpours. Given the
antecedently dry conditions and some storm movement, widespread
flooding is not expected, but local flooding is possible.
Temperatures will be near to a little above normal this upcoming
week with highs in the mid to upper 80s. Diurnal type (afternoon
heating) thunderstorms become more favorable Wednesday through
Friday afternoon
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.AVIATION /12Z TAFS THROUGH 12Z SUNDAY/...
Issued at 615 AM EDT Sat Jul 5 2025
With ridging in place over the region, VFR conditions expected
through this TAF period. There will be gusty southwest winds up
to around 20 kts for KSBN between 17z Sat through Sun 00z.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...Air Quality Alert until midnight EDT tonight for MIZ177-277.
MARINE...None.
&&
$$
DISCUSSION...Skipper
AVIATION...Andersen
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