Portage, IN Weather & Growing Conditions
This Afternoon
65°F
Slight Chance Rain Showers
A slight chance of drizzle before 2pm, then a slight chance of rain showers and a slight chance of drizzle. Mostly 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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Slight Chance Rain Showers | 15 mph SW | 8% |
| 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). 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 Nov 4, 2026.