Napoleon, IN Weather & Growing Conditions
This Afternoon
67°F
Patchy Drizzle
Patchy drizzle. Mostly cloudy, with a high near 67. Southwest wind around 7 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Patchy Drizzle | 7 mph SW | 7% |
| Tonight | 46°F | Patchy Drizzle then Mostly Cloudy | 3 to 7 mph SW | 9% |
| Thursday | 63°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph W | 16% |
| Friday | 55°F | Mostly Cloudy | 2 to 8 mph NW | 12% |
| Friday Night | 33°F | Partly Cloudy | 6 mph NW | 3% |
| Saturday | 52°F | Mostly Sunny | 6 mph NW | 0% |
| Saturday Night | 29°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 56°F | Sunny | 1 to 6 mph W | 0% |
| Sunday Night | 31°F | Mostly Clear | 3 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 5 mph W | 0% |
| Monday Night | 35°F | Clear | 3 mph SW | 0% |
| Tuesday | 62°F | Sunny | 6 mph W | 1% |
| Tuesday Night | 35°F | Mostly Clear | 2 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Napoleon, IN
Last spring frost
Apr 30
First fall frost
Oct 16
Growing season
168 days
Hardiness zone
6b
Explore more for Napoleon, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Milan 5 Ne, In (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.