Flat Rock, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Rock, a community in Shelby County, Indiana.
This Afternoon
69°F
Slight Chance Light Rain
A slight chance of rain before 4pm. Mostly cloudy. High near 69, with temperatures falling to around 66 in the afternoon. Southwest wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Flat Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Slight Chance Light Rain | 12 mph SW | 15% |
| Tonight | 47°F | Mostly Cloudy | 2 to 8 mph SW | 4% |
| Thursday | 63°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 1 to 6 mph W | 7% |
| Friday | 55°F | Mostly Cloudy | 2 to 10 mph NW | 8% |
| Friday Night | 35°F | Partly Cloudy | 3 to 8 mph NW | 8% |
| Saturday | 54°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 0 to 6 mph WNW | 0% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 5 mph WNW | 0% |
| Monday Night | 37°F | Clear | 3 mph SW | 0% |
| Tuesday | 63°F | Sunny | 5 mph WSW | 1% |
| Tuesday Night | 37°F | Mostly Clear | 0 to 3 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Flat Rock (39.362, -85.831). Updated through the day.
Growing snapshot for Flat Rock
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6b
More local growing data for Flat Rock: nearby ZIP 47234 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
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Edinburgh
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London
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Morristown
Pleasant View Village
Shelbyville
Waldron
Climate data from the nearest NOAA station, Shelbyville Sewage Plt, In (10.6 mi from Flat Rock). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.