Flat Rock, OH Weather & Growing Conditions
Overnight
58°F
Mostly Cloudy
Mostly cloudy, with a low around 58. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Mostly Cloudy | 3 mph E | 2% |
| Saturday | 76°F | Rain Showers Likely | 6 mph E | 55% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 6 mph S | 75% |
| Sunday | 74°F | Showers And Thunderstorms | 6 to 13 mph NW | 91% |
| Sunday Night | 56°F | Chance Rain Showers | 10 to 14 mph NE | 43% |
| Monday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 16 mph NE | 22% |
| Monday Night | 52°F | Slight Chance Rain Showers | 12 to 16 mph NE | 22% |
| Tuesday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 16 mph NE | 16% |
| Tuesday Night | 52°F | Rain Showers Likely | 13 to 17 mph E | 60% |
| Wednesday | 66°F | Rain Showers Likely | 12 to 15 mph E | 60% |
| Wednesday Night | 52°F | Chance Rain Showers | 7 to 13 mph E | 54% |
| Thursday | 68°F | Slight Chance Rain Showers | 10 mph E | 23% |
| Thursday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 10 mph NE | 20% |
| Friday | 69°F | Mostly Sunny | 5 to 13 mph NE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Flat Rock, OH
Last spring frost
Apr 25
First fall frost
Oct 25
Growing season
183 days
Hardiness zone
6a
Explore more for Flat Rock, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Norwalk Wwtp, Oh (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.