Napoleon, OH Weather & Growing Conditions
Tonight
63°F
Partly Cloudy then Chance Rain Showers
A chance of rain showers after 4am. Partly cloudy, with a low around 63. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Partly Cloudy then Chance Rain Showers | 10 to 15 mph S | 48% |
| Wednesday | 70°F | Rain Showers | 15 to 20 mph S | 99% |
| Wednesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph SW | 32% |
| Thursday | 62°F | Partly Sunny | 10 to 15 mph SW | 5% |
| Thursday Night | 45°F | Mostly Cloudy | 5 to 10 mph W | 7% |
| Friday | 56°F | Chance Rain Showers | 5 to 10 mph NW | 35% |
| Friday Night | 38°F | Chance Rain Showers | 5 to 10 mph NW | 25% |
| Saturday | 53°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NW | 16% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 5% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 10 mph W | 17% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph W | 17% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph W | 13% |
| Monday Night | 37°F | Partly Cloudy | 10 mph SW | 10% |
| Tuesday | 62°F | Mostly Sunny | 10 to 15 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Napoleon, OH
Last spring frost
Apr 24
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
6a
Explore more for Napoleon, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Napoleon, Oh (0.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.