Seymour, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seymour, a city in Jackson County, Indiana.
Tonight
70°F
Chance Showers And Thunderstorms then Mostly Cloudy
A chance of showers and thunderstorms before 8pm. Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. South wind around 2 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Seymour
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Chance Showers And Thunderstorms then Mostly Cloudy | 2 mph S | 25% |
| Sunday | 91°F | Mostly Sunny | 3 mph WSW | 8% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 5 mph N | 53% |
| Monday | 78°F | Chance Showers And Thunderstorms | 6 mph NE | 48% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 48% |
| Tuesday | 74°F | Chance Showers And Thunderstorms | 6 mph NE | 45% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 2 to 6 mph NNE | 33% |
| Wednesday | 72°F | Chance Showers And Thunderstorms | 5 mph N | 31% |
| Wednesday Night | 58°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 5 mph N | 21% |
| Thursday | 73°F | Partly Sunny | 3 mph N | 8% |
| Thursday Night | 57°F | Mostly Cloudy | 3 mph NNE | 7% |
| Friday | 75°F | Partly Sunny | 1 to 5 mph NNE | 6% |
| Friday Night | 55°F | Partly Cloudy | 1 to 5 mph NNE | 6% |
| Saturday | 76°F | Mostly Sunny | 3 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Seymour (38.948, -85.891). Updated through the day.
Growing snapshot for Seymour
Last spring frost
Apr 16
First fall frost
Oct 21
Growing season
187 days
Hardiness zone
6b
More local growing data for Seymour: nearby ZIP 47274 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Seymour 2 N, In (1.8 mi from Seymour). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.