Flat Rock, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Rock, a community in Shelby County, Indiana.
Today
89°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Flat Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 56% |
| Tonight | 69°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph SSE | 33% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph WSW | 22% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 8 to 12 mph NNE | 53% |
| Monday | 73°F | Rain Showers Likely | 8 to 12 mph NE | 59% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 8 to 13 mph NE | 56% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 10 mph NE | 42% |
| Tuesday Night | 57°F | Slight Chance Showers And Thunderstorms | 5 to 13 mph NNE | 23% |
| Wednesday | 71°F | Slight Chance Rain Showers | 5 to 8 mph N | 17% |
| Wednesday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph N | 15% |
| Thursday | 72°F | Partly Sunny | 5 to 8 mph N | 8% |
| Thursday Night | 56°F | Mostly Cloudy | 3 to 8 mph NNE | 8% |
| Friday | 73°F | Mostly Sunny | 3 to 8 mph NNE | 3% |
| Friday Night | 53°F | Partly Cloudy | 3 to 8 mph NE | 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
Boggstown
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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 Sep 19, 2026.