Mandan, ND Weather & Growing Conditions
This Afternoon
45°F
Mostly Cloudy
Mostly cloudy. High near 45, with temperatures falling to around 39 in the afternoon. Northwest wind 10 to 15 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 45°F | Mostly Cloudy | 10 to 15 mph NW | 0% |
| Tonight | 28°F | Mostly Cloudy | 6 to 9 mph N | 0% |
| Wednesday | 49°F | Partly Sunny | 8 to 13 mph NW | 0% |
| Wednesday Night | 28°F | Mostly Cloudy | 6 to 9 mph NW | 0% |
| Thursday | 43°F | Mostly Sunny | 6 mph NE | 0% |
| Thursday Night | 25°F | Partly Cloudy | 6 mph SE | 0% |
| Friday | 51°F | Mostly Sunny | 7 mph SW | 0% |
| Friday Night | 31°F | Mostly Clear | 8 mph SW | 1% |
| Saturday | 56°F | Mostly Sunny | 8 to 16 mph W | 3% |
| Saturday Night | 31°F | Mostly Clear | 5 to 9 mph W | 1% |
| Sunday | 60°F | Sunny | 5 to 9 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 9 to 15 mph SW | 0% |
| Monday | 57°F | Sunny | 10 to 16 mph W | 0% |
| Monday Night | 33°F | Partly Cloudy | 5 to 8 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mandan, ND
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
4a
Explore more for Mandan, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Mandan Exp Stn, Nd (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.