Bismarck, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a city in Burleigh County, North Dakota.
Tonight
55°F
Patchy Drizzle then Patchy Fog
Patchy drizzle before 7pm, then patchy fog. Cloudy. Low around 55, with temperatures rising to around 57 overnight. East wind 3 to 13 mph.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Patchy Drizzle then Patchy Fog | 3 to 13 mph E | 8% |
| Saturday | 66°F | Patchy Fog then Slight Chance Rain Showers | 3 to 10 mph E | 23% |
| Saturday Night | 52°F | Chance Rain Showers | 12 mph NE | 29% |
| Sunday | 63°F | Chance Rain Showers | 10 mph E | 43% |
| Sunday Night | 50°F | Chance Rain Showers | 5 to 9 mph E | 43% |
| Monday | 67°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph E | 17% |
| Monday Night | 49°F | Partly Cloudy | 8 mph SE | 4% |
| Tuesday | 69°F | Partly Sunny | 8 to 17 mph SE | 4% |
| Tuesday Night | 53°F | Mostly Cloudy | 15 mph SE | 12% |
| Wednesday | 73°F | Partly Sunny | 15 mph SE | 13% |
| Wednesday Night | 54°F | Slight Chance Rain Showers | 5 to 13 mph SE | 19% |
| Thursday | 76°F | Mostly Sunny | 5 to 9 mph SE | 12% |
| Thursday Night | 55°F | Mostly Clear | 8 mph SE | 6% |
| Friday | 76°F | Mostly Sunny | 7 to 15 mph SE | 7% |
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 Sep 19, 2026.