Portage 7 Day Weather Forecast with Current Weather Conditions for , MI." />

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Portage, Michigan 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

NWS Forecast for Portage MI

National Weather Service Forecast for: Portage MI
Issued by: National Weather Service Grand Rapids, MI

Updated: 5:03 am EDT Jun 7, 2025

Today Increasing Clouds	Tonight Chance Showers	Sunday Chance Showers then Slight Chance T-storms	Sunday Night Showers Likely	Monday Chance Showers	Monday Night Chance Showers then Mostly Clear	Tuesday Mostly Sunny	Tuesday Night Mostly Clear	Wednesday Sunny
Hi 77 °F	Lo 58 °F	Hi 78 °F	Lo 57 °F	Hi 76 °F	Lo 52 °F	Hi 71 °F	Lo 53 °F	Hi 80 °F

Today	Increasing clouds, with a high near 77. East wind 3 to 8 mph.
Tonight	A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 58. East wind 3 to 6 mph.
Sunday	A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 78. Light and variable wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night	Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 57. West southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday	A chance of showers, with thunderstorms also possible after 5pm. Mostly sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Monday Night	A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 52.
Tuesday	Mostly sunny, with a high near 71.
Tuesday Night	Mostly clear, with a low around 53.
Wednesday	Sunny, with a high near 80.
Wednesday Night	Mostly clear, with a low around 60.
Thursday	Sunny, with a high near 84.
Thursday Night	Partly cloudy, with a low around 63.
Friday	A chance of showers. Mostly cloudy, with a high near 81.

Forecast from NOAA-NWS for Portage MI.

Weather Forecast Discussion

270
FXUS63 KGRR 070711
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
311 AM EDT Sat Jun 7 2025

.KEY MESSAGES...

- Upper Low Brings Some Rain Early Next Week

&&

.DISCUSSION...
Issued at 311 AM EDT Sat Jun 7 2025

One more day of fair weather before rain chances increase on
Sunday in advance of a vigorous upper low moving across the Great
Lakes region. Before then...there is a slight chance of rain
across the far southern zones tonight as a sfc low tracks across
the Ohio Valley.

The upper low approaches on Sunday with an axis of positive
vorticity advection and upper level divergence moving through in
the afternoon and evening. Thunder potential is limited by
marginal instability with forecast soundings showing convective
inhibition persisting through the afternoon.

A secondary area of differential positive vorticity advection
associated with the core region of the upper low moves in by
Monday afternoon and combines with deeper moisture and steepening
lapse rates/instability to bring a stronger diurnal enhancement of
showers and thunderstorms in the afternoon and evening. The low
moves out late Tuesday with fair weather returning for Wednesday.

&&

.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/...
Issued at 114 AM EDT Sat Jun 7 2025

VFR conditions expected to continue through Sunday. Winds will be
light and variable overnight and east to northeast blo 10 knots
today.

&&

.MARINE...
Issued at 114 AM EDT Sat Jun 7 2025

Winds and waves are expected to be relatively calm through the
middle of next week with winds less than 20 knots and waves 3 feet
or less.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.

&&

$$

DISCUSSION...Ostuno
AVIATION...Ostuno
MARINE...Ostuno

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Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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