Marengo, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marengo, a village in Morrow County, Ohio.
Today
84°F
Sunny
Sunny, with a high near 84. East wind around 5 mph.
7-day forecast for Marengo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 5 mph E | 0% |
| Tonight | 63°F | Mostly Clear | 5 mph E | 0% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph S | 37% |
| Wednesday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 24% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph SW | 46% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph SW | 62% |
| Friday | 83°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 to 9 mph SW | 70% |
| Friday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph SW | 70% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 32% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 32% |
| Sunday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 19% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 28% |
| Monday | 87°F | Chance Rain Showers | 8 to 12 mph SW | 36% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 10 mph SW | 40% |
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 Aug 4, 2026.