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Westport, IN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Westport, a town in Decatur County, Indiana.

This Afternoon
90°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny. High near 90, with temperatures falling to around 88 in the afternoon. West southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Westport

WhenTempForecastWindPrecip
This Afternoon 90°F Chance Showers And Thunderstorms 5 mph WSW 41%
Tonight 69°F Chance Showers And Thunderstorms then Mostly Cloudy 3 mph SSE 30%
Sunday 89°F Mostly Sunny 5 mph WSW 12%
Sunday Night 63°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 7 mph NNE 62%
Monday 76°F Chance Showers And Thunderstorms 8 mph NE 53%
Monday Night 58°F Chance Showers And Thunderstorms 5 to 9 mph NE 53%
Tuesday 73°F Chance Showers And Thunderstorms 7 mph NE 41%
Tuesday Night 58°F Chance Showers And Thunderstorms 3 to 8 mph NE 41%
Wednesday 71°F Chance Showers And Thunderstorms 6 mph NNE 37%
Wednesday Night 57°F Chance Showers And Thunderstorms then Mostly Cloudy 2 to 6 mph NNE 35%
Thursday 72°F Partly Sunny 2 to 6 mph NNE 8%
Thursday Night 56°F Mostly Cloudy 2 to 6 mph NNE 7%
Friday 74°F Partly Sunny 2 to 7 mph NNE 7%
Friday Night 54°F Partly Cloudy 2 to 7 mph NE 7%

Forecast source: National Weather Service (api.weather.gov) for Westport (39.176, -85.575). Updated through the day.

Growing snapshot for Westport

Last spring frost
Apr 21
First fall frost
Oct 21
Growing season
180 days
Hardiness zone
6b

More local growing data for Westport: nearby ZIP 47283 weather · frost dates · planting calendar · Indiana frost dates

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Climate data from the nearest NOAA station, N Vernon 2 Ese, In (11.6 mi from Westport). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.