Speedway, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Speedway, a town in Marion County, Indiana.
This Afternoon
70°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy. High near 70, with temperatures falling to around 63 in the afternoon. West southwest wind around 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Speedway
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Slight Chance Light Rain | 12 mph WSW | 15% |
| Tonight | 47°F | Mostly Cloudy | 5 to 10 mph WSW | 6% |
| Thursday | 62°F | Partly Sunny | 7 to 13 mph SW | 1% |
| Thursday Night | 44°F | Slight Chance Light Rain | 3 to 8 mph W | 23% |
| Friday | 54°F | Slight Chance Light Rain | 5 to 12 mph NNW | 16% |
| Friday Night | 36°F | Partly Cloudy | 5 to 9 mph NNW | 12% |
| Saturday | 53°F | Mostly Sunny | 7 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Sunday | 57°F | Sunny | 2 to 8 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 1 to 6 mph WNW | 0% |
| Monday | 61°F | Sunny | 1 to 7 mph W | 0% |
| Monday Night | 39°F | Clear | 6 mph SW | 0% |
| Tuesday | 63°F | Sunny | 3 to 7 mph W | 2% |
| Tuesday Night | 39°F | Mostly Clear | 1 to 5 mph WNW | 2% |
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 Nov 5, 2026.