Zionsville, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Zionsville, a town in Boone County, Indiana.
This Afternoon
84°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. West southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Zionsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Showers And Thunderstorms Likely | 7 mph WSW | 64% |
| Tonight | 68°F | Slight Chance Showers And Thunderstorms | 6 mph S | 24% |
| Sunday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph N | 38% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 69% |
| Monday | 69°F | Chance Showers And Thunderstorms | 15 mph ENE | 58% |
| Monday Night | 53°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 10 to 14 mph ENE | 58% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 14 mph NE | 44% |
| Tuesday Night | 53°F | Chance Showers And Thunderstorms | 7 to 14 mph NE | 44% |
| Wednesday | 68°F | Slight Chance Showers And Thunderstorms | 9 mph NNE | 23% |
| Wednesday Night | 54°F | Mostly Cloudy | 5 to 9 mph NNE | 14% |
| Thursday | 70°F | Partly Sunny | 8 mph NNE | 5% |
| Thursday Night | 54°F | Mostly Cloudy | 3 to 8 mph NNE | 5% |
| Friday | 72°F | Partly Sunny | 5 to 9 mph NNE | 5% |
| Friday Night | 53°F | Partly Cloudy | 3 to 8 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Zionsville (39.992, -86.322). Updated through the day.
Growing snapshot for Zionsville
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
180 days
Hardiness zone
6a
More local growing data for Zionsville: nearby ZIP 46075 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Whitestown, In (2.1 mi from Zionsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.