Marengo, OH Weather & Growing Conditions
Tonight
60°F
Partly Cloudy then Slight Chance Light Rain
A slight chance of rain after 5am. Partly cloudy, with a low around 60. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Partly Cloudy then Slight Chance Light Rain | 10 to 15 mph SE | 18% |
| Wednesday | 66°F | Light Rain | 17 mph S | 94% |
| Wednesday Night | 53°F | Light Rain Likely | 9 to 17 mph SW | 74% |
| Thursday | 64°F | Mostly Sunny | 8 to 15 mph SW | 3% |
| Thursday Night | 46°F | Partly Cloudy | 3 to 9 mph SW | 2% |
| Friday | 60°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph W | 18% |
| Friday Night | 41°F | Slight Chance Light Rain | 9 mph NW | 21% |
| Saturday | 53°F | Slight Chance Light Rain | 10 mph NW | 23% |
| Saturday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 3 to 7 mph W | 23% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 15% |
| Sunday Night | 36°F | Slight Chance Light Rain | 9 mph W | 16% |
| Monday | 57°F | Slight Chance Light Rain | 8 to 12 mph W | 21% |
| Monday Night | 38°F | Slight Chance Light Rain then Partly Cloudy | 12 mph SW | 21% |
| Tuesday | 61°F | Mostly Sunny | 13 mph W | 4% |
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 Nov 4, 2026.