Bismarck, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a city in Burleigh County, North Dakota.
Overnight
30°F
Patchy Fog
Patchy fog. Mostly cloudy. Low around 30, with temperatures rising to around 33 overnight. Northwest wind around 8 mph, with gusts as high as 18 mph.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 30°F | Patchy Fog | 8 mph NW | 0% |
| Wednesday | 50°F | Patchy Fog then Partly Sunny | 7 to 13 mph NW | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 6 to 9 mph N | 0% |
| Thursday | 43°F | Mostly Sunny | 2 to 6 mph NE | 0% |
| Thursday Night | 26°F | Partly Cloudy | 5 mph SE | 0% |
| Friday | 50°F | Mostly Sunny | 7 mph S | 0% |
| Friday Night | 31°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 57°F | Sunny | 5 to 14 mph W | 0% |
| Saturday Night | 32°F | Mostly Clear | 2 to 8 mph W | 0% |
| Sunday | 58°F | Sunny | 2 to 9 mph S | 0% |
| Sunday Night | 39°F | Partly Cloudy | 8 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 8 to 14 mph NW | 0% |
| Monday Night | 33°F | Mostly Clear | 2 to 6 mph W | 1% |
| Tuesday | 55°F | Mostly Sunny | 2 to 7 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bismarck (46.815, -100.770). Updated through the day.
Growing snapshot for Bismarck
Last spring frost
May 10
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4a
More local growing data for Bismarck: nearby ZIP 58505 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bismarck 2.4 Nnw, Nd (1.2 mi from Bismarck). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.