Marengo, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marengo, a village in Morrow County, Ohio.
This Afternoon
76°F
Mostly Sunny
Mostly sunny, with a high near 76. Northeast wind around 9 mph.
7-day forecast for Marengo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 9 mph NE | 0% |
| Tonight | 57°F | Mostly Clear | 9 mph NE | 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 | 7 to 10 mph W | 89% |
| Sunday Night | 58°F | Showers And Thunderstorms | 12 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 | 14 mph NE | 47% |
| Tuesday Night | 57°F | Rain Showers Likely | 15 mph NE | 55% |
| Wednesday | 68°F | Rain Showers Likely | 12 to 15 mph E | 55% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 13 mph NE | 50% |
| Thursday | 69°F | Slight Chance Rain Showers | 10 mph NE | 23% |
| Thursday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov) for Marengo (40.401, -82.811). Updated through the day.
Growing snapshot for Marengo
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
172 days
Hardiness zone
6a
More local growing data for Marengo: nearby ZIP 43334 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Ashley
Candlewood Lake
Cardington
Chesterville
Edison
Fulton
Galion
Hidden Lakes
Iberia
Mount Gilead
Sparta
Climate data from the nearest NOAA station, Centerburg 2 Se, Oh (10.5 mi from Marengo). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.