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Riley, IN Weather & Growing Conditions

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

Today
90°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 90, with temperatures falling to around 88 in the afternoon. West wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Riley

WhenTempForecastWindPrecip
Today 90°F Chance Showers And Thunderstorms 6 mph W 46%
Tonight 70°F Slight Chance Showers And Thunderstorms then Mostly Cloudy 5 mph SSE 15%
Sunday 88°F Mostly Sunny then Chance Showers And Thunderstorms 3 to 7 mph NW 28%
Sunday Night 62°F Chance Showers And Thunderstorms 10 mph NNE 54%
Monday 73°F Rain Showers Likely 12 mph NE 68%
Monday Night 56°F Chance Showers And Thunderstorms 8 to 13 mph NE 66%
Tuesday 70°F Chance Showers And Thunderstorms 12 mph NE 31%
Tuesday Night 55°F Chance Showers And Thunderstorms then Mostly Cloudy 5 to 12 mph NNE 31%
Wednesday 71°F Partly Sunny 6 to 9 mph NNE 8%
Wednesday Night 55°F Partly Cloudy 2 to 9 mph N 6%
Thursday 73°F Mostly Sunny 5 to 8 mph N 3%
Thursday Night 56°F Partly Cloudy 3 to 8 mph NNE 3%
Friday 75°F Mostly Sunny 3 to 8 mph NNE 1%
Friday Night 54°F Partly Cloudy 3 to 7 mph NE 1%

Forecast source: National Weather Service (api.weather.gov) for Riley (39.390, -87.300). Updated through the day.

Growing snapshot for Riley

Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days

More local growing data for Riley: nearby ZIP 47871 weather · frost dates · planting calendar · Indiana frost dates

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Climate data from the nearest NOAA station, Terre Haute Caa Ap, In (4.2 mi from Riley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.