Southport, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southport, a city in Marion County, Indiana.
Today
83°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 83. East wind around 3 mph.
7-day forecast for Southport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Sunny | 3 mph E | 0% |
| Tonight | 62°F | Mostly Clear | 3 mph ENE | 0% |
| Wednesday | 86°F | Sunny | 0 to 3 mph WSW | 0% |
| Wednesday Night | 67°F | Partly Cloudy | 3 mph SSW | 4% |
| Thursday | 85°F | Scattered Showers And Thunderstorms | 2 to 7 mph SSW | 48% |
| Thursday Night | 68°F | Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 6 mph SSW | 59% |
| Friday | 84°F | Scattered Showers And Thunderstorms | 2 to 6 mph SSW | 54% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 46% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph SW | 22% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 22% |
| Sunday | 87°F | Mostly Sunny | 3 to 9 mph SW | 12% |
| Sunday Night | 71°F | Partly Cloudy | 8 mph SSW | 12% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 17% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SW | 30% |
Forecast source: National Weather Service (api.weather.gov) for Southport (39.660, -86.117). Updated through the day.
Growing snapshot for Southport
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
183 days
Hardiness zone
6b
More local growing data for Southport: nearby ZIP 46227 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Beech Grove
Crows Nest
Cumberland
Homecroft
Indianapolis city
Lawrence
Meridian Hills
North Crows Nest
Pleasant View
Rocky Ripple
Speedway
Spring Hill
Warren Park
Williams Creek
Wynnedale
Climate data from the nearest NOAA station, Indianapolis Se Side, In (4.5 mi from Southport). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.