Bismarck, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a city in Burleigh County, North Dakota.
Today
76°F
Sunny
Sunny, with a high near 76. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Sunny | 9 to 14 mph NW | 0% |
| Tonight | 49°F | Mostly Clear | 2 to 13 mph W | 0% |
| Wednesday | 84°F | Mostly Sunny | 3 to 12 mph W | 0% |
| Wednesday Night | 54°F | Mostly Clear | 3 to 10 mph SW | 1% |
| Thursday | 90°F | Sunny | 3 to 10 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 3 to 10 mph E | 0% |
| Friday | 88°F | Sunny | 5 to 10 mph NW | 0% |
| Friday Night | 58°F | Mostly Clear | 6 to 9 mph E | 1% |
| Saturday | 90°F | Sunny | 6 to 12 mph NE | 1% |
| Saturday Night | 58°F | Mostly Clear | 7 to 12 mph NE | 4% |
| Sunday | 86°F | Mostly Sunny | 6 to 13 mph E | 9% |
| Sunday Night | 59°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph NE | 29% |
| Monday | 83°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 29% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 26% |
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 Aug 4, 2026.