Portage, IN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Portage, a city in Porter County, Indiana.

This Afternoon

65°F

Slight Chance Rain Showers

A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 65, with temperatures falling to around 57 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph.

7-day forecast for Portage

When	Temp	Forecast	Wind	Precip
This Afternoon	65°F	Slight Chance Rain Showers	15 mph SW	1%
Tonight	47°F	Slight Chance Rain Showers then Slight Chance Rain	10 to 15 mph SW	17%
Thursday	54°F	Mostly Cloudy then Chance Rain	10 to 15 mph SW	46%
Thursday Night	41°F	Rain	10 to 15 mph NW	85%
Friday	50°F	Chance Rain	15 mph NNW	43%
Friday Night	39°F	Mostly Cloudy	10 to 15 mph NNW	12%
Saturday	50°F	Mostly Sunny	5 to 10 mph NW	4%
Saturday Night	36°F	Mostly Clear	0 to 5 mph WNW	0%
Sunday	55°F	Sunny	5 to 10 mph W	1%
Sunday Night	38°F	Mostly Clear	5 mph W	0%
Monday	59°F	Sunny	5 to 10 mph WSW	0%
Monday Night	42°F	Mostly Clear	5 mph SW	0%
Tuesday	59°F	Sunny	0 to 5 mph WNW	1%
Tuesday Night	40°F	Partly Cloudy	0 mph	2%

Forecast source: National Weather Service (api.weather.gov) for Portage (41.592, -87.179). Updated through the day.

Growing snapshot for Portage

Last spring frost

Apr 22

First fall frost

Oct 27

Growing season

188 days

Hardiness zone

More local growing data for Portage: nearby ZIP 46368 weather · frost dates · planting calendar · Indiana frost dates

Nearby towns & communities

Aberdeen Beverly Shores Boone Grove Burns Harbor Chesterton Dune Acres Hebron Kouts Lake Eliza Lakes of the Four Seasons Malden Ogden Dunes Porter Salt Creek Commons Shorewood Forest South Haven Town of Pines Valparaiso Wheeler

All Indiana locations ›

Climate data from the nearest NOAA station, Indiana Dunes Nl, In (5.4 mi from Portage). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.