Flat Rock, OH Weather & Growing Conditions
Overnight
63°F
Mostly Cloudy
Mostly cloudy, with a low around 63. South wind 12 to 15 mph, with gusts as high as 29 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Cloudy | 12 to 15 mph S | 12% |
| Wednesday | 67°F | Light Rain | 16 to 20 mph S | 90% |
| Wednesday Night | 52°F | Light Rain Likely then Cloudy | 8 to 18 mph SW | 55% |
| Thursday | 62°F | Partly Sunny | 9 to 16 mph SW | 0% |
| Thursday Night | 47°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 9 mph SW | 21% |
| Friday | 55°F | Rain Showers Likely | 5 to 9 mph W | 62% |
| Friday Night | 40°F | Rain Showers Likely | 10 mph NW | 58% |
| Saturday | 51°F | Chance Rain Showers | 8 to 12 mph NW | 27% |
| Saturday Night | 36°F | Mostly Cloudy | 2 to 7 mph W | 7% |
| Sunday | 55°F | Mostly Sunny | 3 to 12 mph SW | 14% |
| Sunday Night | 36°F | Partly Cloudy | 9 mph W | 14% |
| Monday | 57°F | Slight Chance Light Rain | 7 to 13 mph W | 16% |
| Monday Night | 40°F | Slight Chance Light Rain then Partly Cloudy | 12 mph SW | 15% |
| Tuesday | 61°F | Mostly Sunny | 13 mph W | 5% |
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 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.