Speedway, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Speedway, a town in Marion County, Indiana.
Today
84°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny. High near 84, with temperatures falling to around 82 in the afternoon. East wind around 2 mph.
7-day forecast for Speedway
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Sunny | 2 mph E | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph NE | 0% |
| Wednesday | 86°F | Sunny | 0 to 3 mph WSW | 0% |
| Wednesday Night | 67°F | Partly Cloudy | 3 mph SW | 5% |
| Thursday | 84°F | Isolated Showers And Thunderstorms | 2 to 7 mph SSW | 56% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 59% |
| Friday | 84°F | Scattered Showers And Thunderstorms | 2 to 6 mph SSW | 47% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 41% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph SW | 21% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSW | 21% |
| Sunday | 87°F | Mostly Sunny | 3 to 9 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy | 8 mph SSW | 13% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 18% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SW | 32% |
Forecast source: National Weather Service (api.weather.gov) for Speedway (39.794, -86.248). Updated through the day.
Growing snapshot for Speedway
Last spring frost
Apr 12
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
6b
More local growing data for Speedway: nearby ZIP 46224 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Beech Grove
Crows Nest
Cumberland
Homecroft
Indianapolis city
Lawrence
Meridian Hills
North Crows Nest
Pleasant View
Rocky Ripple
Southport
Spring Hill
Warren Park
Williams Creek
Wynnedale
Climate data from the nearest NOAA station, Indianapolis Eagle Creek Ap, In (2.9 mi from Speedway). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.