Flat Rock, OH Weather & Growing Conditions
Tonight
63°F
Partly Cloudy then Slight Chance Light Rain
A slight chance of rain after 5am. Partly cloudy, with a low around 63. South wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Partly Cloudy then Slight Chance Light Rain | 9 to 16 mph S | 18% |
| Wednesday | 68°F | Light Rain | 16 to 21 mph S | 81% |
| Wednesday Night | 52°F | Light Rain Likely | 8 to 20 mph SW | 62% |
| Thursday | 63°F | Partly Sunny | 9 to 16 mph SW | 3% |
| Thursday Night | 48°F | Mostly Cloudy | 3 to 9 mph SW | 10% |
| Friday | 58°F | Chance Light Rain | 3 to 9 mph W | 36% |
| Friday Night | 41°F | Chance Light Rain | 8 mph NW | 36% |
| Saturday | 53°F | Slight Chance Light Rain | 7 to 10 mph NW | 23% |
| Saturday Night | 36°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 18% |
| 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 | 15% |
| 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 (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.