Portage, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage, a city in Porter County, Indiana.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South wind around 5 mph, with gusts as high as 15 mph.
7-day forecast for Portage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 mph S | 0% |
| Tonight | 65°F | Partly Cloudy | 5 mph S | 2% |
| Wednesday | 80°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SSW | 37% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph WSW | 88% |
| Thursday | 76°F | Rain Showers then Chance Showers And Thunderstorms | 5 mph WSW | 88% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 50% |
| Friday | 80°F | Mostly Sunny | 0 to 5 mph WSW | 8% |
| Friday Night | 64°F | Partly Cloudy | 0 to 5 mph SSE | 8% |
| Saturday | 83°F | Mostly Sunny | 5 mph SSW | 10% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 18% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 18% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 41% |
| Monday | 84°F | Chance Rain Showers | 5 mph SW | 41% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph WSW | 47% |
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 Aug 4, 2026.