Mandan, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mandan, a city in Morton County, North Dakota.
Today
76°F
Sunny
Sunny, with a high near 76. West wind 7 to 13 mph, with gusts as high as 24 mph.
7-day forecast for Mandan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Sunny | 7 to 13 mph W | 0% |
| Tonight | 49°F | Mostly Clear | 1 to 12 mph W | 0% |
| Wednesday | 84°F | Mostly Sunny | 3 to 12 mph SW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 3 to 10 mph SW | 1% |
| Thursday | 90°F | Sunny | 3 to 10 mph W | 0% |
| Thursday Night | 57°F | Mostly Clear | 3 to 9 mph E | 0% |
| Friday | 88°F | Sunny | 5 to 10 mph NW | 0% |
| Friday Night | 57°F | Mostly Clear | 8 mph E | 1% |
| Saturday | 91°F | Sunny | 6 to 12 mph NE | 1% |
| Saturday Night | 57°F | Mostly Clear | 7 to 12 mph NE | 4% |
| Sunday | 87°F | Mostly Sunny | 6 to 13 mph E | 9% |
| Sunday Night | 58°F | Slight Chance Showers And Thunderstorms | 12 mph NE | 29% |
| Monday | 84°F | Chance Showers And Thunderstorms | 9 to 14 mph NE | 29% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 27% |
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 Aug 4, 2026.