Seymour, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seymour, a city in Jackson County, Indiana.
Overnight
68°F
Mostly Cloudy
Mostly cloudy. Low around 68, with temperatures rising to around 70 overnight. East southeast wind around 3 mph.
7-day forecast for Seymour
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Mostly Cloudy | 3 mph ESE | 2% |
| Saturday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph S | 47% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Mostly Cloudy | 2 mph SSE | 32% |
| Sunday | 90°F | Mostly Sunny | 3 mph WSW | 13% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph NNE | 47% |
| Monday | 76°F | Showers And Thunderstorms Likely | 6 mph NE | 56% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 5 to 8 mph NE | 56% |
| Tuesday | 73°F | Chance Showers And Thunderstorms | 6 mph NE | 38% |
| Tuesday Night | 57°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph NNE | 19% |
| Wednesday | 72°F | Slight Chance Rain Showers | 5 mph N | 17% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Mostly Cloudy | 1 to 5 mph N | 16% |
| Thursday | 72°F | Partly Sunny | 5 mph N | 10% |
| Thursday Night | 56°F | Mostly Cloudy | 5 mph N | 10% |
| Friday | 74°F | Mostly Sunny | 5 mph NNE | 3% |
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 19, 2026.