Mandan, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mandan, a city in Morton County, North Dakota.
This Afternoon
46°F
Mostly Cloudy
Mostly cloudy. High near 46, with temperatures falling to around 44 in the afternoon. Northwest wind 9 to 13 mph, with gusts as high as 25 mph.
7-day forecast for Mandan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Mostly Cloudy | 9 to 13 mph NW | 0% |
| Tonight | 28°F | Mostly Cloudy | 7 mph NW | 0% |
| Wednesday | 51°F | Partly Sunny | 7 to 12 mph NW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 5 to 8 mph NW | 0% |
| Thursday | 45°F | Mostly Sunny | 5 mph NE | 0% |
| Thursday Night | 25°F | Partly Cloudy | 3 mph SE | 0% |
| Friday | 52°F | Mostly Sunny | 6 mph SW | 0% |
| Friday Night | 31°F | Mostly Clear | 6 mph SW | 1% |
| Saturday | 57°F | Mostly Sunny | 6 to 16 mph W | 2% |
| Saturday Night | 31°F | Mostly Clear | 2 to 9 mph W | 1% |
| Sunday | 60°F | Sunny | 2 to 9 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 8 to 12 mph SW | 0% |
| Monday | 58°F | Sunny | 9 to 16 mph W | 0% |
| Monday Night | 33°F | Partly Cloudy | 3 to 7 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mandan (46.829, -100.887). Updated through the day.
Growing snapshot for Mandan
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
4a
More local growing data for Mandan: nearby ZIP 58554 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mandan Exp Stn, Nd (4.4 mi from Mandan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.