Portage, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage, a city in Porter County, Indiana.
Overnight
62°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 64 overnight. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Portage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Showers And Thunderstorms | 10 mph ESE | 53% |
| Saturday | 76°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 100% |
| Saturday Night | 64°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 mph SE | 92% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 5 to 15 mph NNE | 62% |
| Sunday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 31% |
| Monday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph ENE | 18% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 20% |
| Wednesday | 65°F | Partly Sunny | 5 to 10 mph NE | 10% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph NE | 3% |
| Friday | 69°F | Mostly Sunny | 5 to 10 mph NE | 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
6a
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
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 Sep 19, 2026.