Plainfield, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a town in Hendricks County, Indiana.
This Afternoon
81°F
Isolated Showers And Thunderstorms
Isolated showers and thunderstorms after 5pm. Mostly cloudy, with a high near 81. Northeast wind around 9 mph. Chance of precipitation is 20%.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Isolated Showers And Thunderstorms | 9 mph NE | 22% |
| Tonight | 66°F | Scattered Showers And Thunderstorms then Mostly Cloudy | 6 to 9 mph ENE | 29% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms | 7 mph S | 50% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 6 mph SSE | 50% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 3 to 7 mph WSW | 34% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 60% |
| Monday | 73°F | Showers And Thunderstorms Likely | 12 mph NE | 61% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 47% |
| Tuesday | 70°F | Chance Showers And Thunderstorms | 12 mph NE | 39% |
| Tuesday Night | 57°F | Chance Showers And Thunderstorms then Mostly Cloudy | 7 to 12 mph NNE | 30% |
| Wednesday | 70°F | Mostly Cloudy | 7 to 10 mph NNE | 6% |
| Wednesday Night | 56°F | Mostly Cloudy | 5 to 10 mph N | 5% |
| Thursday | 72°F | Partly Sunny | 5 to 9 mph N | 5% |
| Thursday Night | 57°F | Mostly Cloudy | 5 to 9 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Plainfield (39.693, -86.372). Updated through the day.
Growing snapshot for Plainfield
Last spring frost
Apr 12
First fall frost
Oct 27
Growing season
196 days
Hardiness zone
6a
More local growing data for Plainfield: nearby ZIP 46168 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Amo
Avon
Belleville
Brownsburg
Cartersburg
Clayton
Clermont
Coatesville
Danville
Heritage Lake
Lizton
North Salem
Pittsboro
Climate data from the nearest NOAA station, Indianapolis Nwfo, In (6.1 mi from Plainfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.