Napoleon, ND Weather & Growing Conditions
Overnight
55°F
Areas Of Fog
Areas of fog. Cloudy, with a low around 55. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Areas Of Fog | 5 mph NE | 5% |
| Saturday | 64°F | Areas Of Fog | 7 to 14 mph NE | 12% |
| Saturday Night | 49°F | Chance Rain Showers | 12 to 15 mph NE | 30% |
| Sunday | 62°F | Mostly Cloudy | 13 to 16 mph E | 10% |
| Sunday Night | 46°F | Mostly Cloudy | 7 to 12 mph E | 10% |
| Monday | 66°F | Mostly Sunny | 8 to 13 mph E | 5% |
| Monday Night | 44°F | Partly Cloudy | 10 mph SE | 3% |
| Tuesday | 67°F | Mostly Sunny | 12 to 23 mph SE | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 21 mph SE | 6% |
| Wednesday | 69°F | Partly Sunny then Slight Chance Rain Showers | 21 to 24 mph SE | 15% |
| Wednesday Night | 51°F | Slight Chance Rain Showers | 14 to 21 mph SE | 24% |
| Thursday | 72°F | Slight Chance Rain Showers then Partly Sunny | 15 mph SE | 17% |
| Thursday Night | 53°F | Partly Cloudy | 13 mph SE | 14% |
| Friday | 73°F | Partly Sunny | 13 to 23 mph S | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Napoleon, ND
Last spring frost
May 13
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4a
Explore more for Napoleon, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Napoleon, Nd (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.