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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

WhenTempForecastWindPrecip
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

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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.