Marengo, OH Weather & Growing Conditions
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. East wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 8 mph E | 2% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 mph SE | 22% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 7 mph S | 70% |
| Sunday | 79°F | Showers And Thunderstorms | 9 mph W | 89% |
| Sunday Night | 58°F | Showers And Thunderstorms | 13 mph NE | 78% |
| Monday | 69°F | Chance Rain Showers | 13 mph NE | 46% |
| Monday Night | 56°F | Chance Rain Showers | 14 mph NE | 47% |
| Tuesday | 69°F | Chance Rain Showers | 12 mph NE | 47% |
| Tuesday Night | 57°F | Rain Showers Likely | 12 to 15 mph E | 55% |
| Wednesday | 68°F | Rain Showers Likely | 12 to 17 mph E | 55% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 14 mph E | 50% |
| Thursday | 69°F | Slight Chance Rain Showers | 12 mph NE | 23% |
| Thursday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NE | 20% |
| Friday | 70°F | Slight Chance Rain Showers | 8 to 12 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marengo, OH
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
172 days
Hardiness zone
6a
Explore more for Marengo, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Centerburg 2 Se, Oh (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.