Portage, IN Weather & Growing Conditions
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
| 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). Updated through the day.
Growing snapshot for Portage, IN
Last spring frost
Apr 22
First fall frost
Oct 27
Growing season
188 days
Hardiness zone
6a
Explore more for Portage, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Indiana Dunes Nl, In (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.