Mandan, ND Weather & Growing Conditions
Today
66°F
Patchy Fog
Patchy fog before 1pm. Cloudy, with a high near 66. Northeast wind 5 to 10 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog | 5 to 10 mph NE | 14% |
| Tonight | 50°F | Chance Rain Showers | 13 mph NE | 40% |
| Sunday | 61°F | Slight Chance Rain Showers | 12 mph E | 24% |
| Sunday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph E | 20% |
| Monday | 67°F | Mostly Sunny | 5 to 9 mph SE | 9% |
| Monday Night | 47°F | Partly Cloudy | 9 mph SE | 3% |
| Tuesday | 68°F | Mostly Sunny | 10 to 18 mph SE | 2% |
| Tuesday Night | 51°F | Mostly Cloudy | 17 mph SE | 7% |
| Wednesday | 73°F | Partly Sunny | 17 mph SE | 7% |
| Wednesday Night | 53°F | Slight Chance Rain Showers | 8 to 14 mph SE | 15% |
| Thursday | 75°F | Mostly Sunny | 7 to 10 mph SE | 11% |
| Thursday Night | 54°F | Partly Cloudy | 10 mph SE | 9% |
| Friday | 75°F | Partly Sunny | 10 to 17 mph SE | 7% |
| Friday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 17 mph SE | 16% |
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 Sep 19, 2026.