Riley, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riley, a town in Vigo County, Indiana.
Today
92°F
Chance Showers And Thunderstorms
A slight chance of rain showers between 11am and 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. South southwest 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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Chance Showers And Thunderstorms | 6 mph SSW | 47% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph SSE | 18% |
| 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
Nearby towns & communities
Burnett
Dresser
Fontanet
Lakewood
Lyford
New Goshen
North Terre Haute
Prairie Creek
Prairieton
Seelyville
Shepardsville
St. Mary of the Woods
Tecumseh
Terre Haute
Toad Hop
West Terre Haute
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.