Napoleon, ND Weather & Growing Conditions
Overnight
31°F
Patchy Fog
Patchy fog. Mostly cloudy. Low around 31, with temperatures rising to around 35 overnight. Northwest wind around 18 mph, with gusts as high as 29 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 31°F | Patchy Fog | 18 mph NW | 0% |
| Wednesday | 45°F | Patchy Fog then Mostly Cloudy | 16 to 20 mph NW | 0% |
| Wednesday Night | 29°F | Mostly Cloudy | 12 to 15 mph N | 0% |
| Thursday | 39°F | Partly Sunny | 5 to 13 mph N | 0% |
| Thursday Night | 24°F | Partly Cloudy | 5 to 8 mph SE | 0% |
| Friday | 45°F | Mostly Sunny | 8 to 12 mph S | 0% |
| Friday Night | 30°F | Partly Cloudy | 7 to 10 mph SW | 0% |
| Saturday | 53°F | Mostly Sunny | 10 to 20 mph W | 0% |
| Saturday Night | 32°F | Mostly Clear | 7 to 12 mph W | 0% |
| Sunday | 55°F | Sunny | 7 to 14 mph SW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 13 mph SW | 0% |
| Monday | 55°F | Mostly Sunny | 12 to 18 mph NW | 0% |
| Monday Night | 33°F | Mostly Clear | 6 to 9 mph W | 1% |
| Tuesday | 52°F | Mostly Sunny | 6 to 10 mph SW | 1% |
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 Nov 4, 2026.