North Sioux City, SD Weather & Growing Conditions
This Afternoon
71°F
Cloudy
Cloudy, with a high near 71. North wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Cloudy | 10 mph N | 5% |
| Tonight | 58°F | Cloudy | 10 mph NNE | 7% |
| Sunday | 63°F | Chance Rain Showers | 10 mph NE | 51% |
| Sunday Night | 53°F | Rain Showers | 5 to 10 mph NE | 90% |
| Monday | 59°F | Showers And Thunderstorms | 10 mph NE | 90% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 19% |
| Tuesday | 63°F | Partly Sunny | 5 mph ENE | 4% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph ESE | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph SE | 7% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 50% |
| Thursday | 68°F | Chance Showers And Thunderstorms | 10 mph SSE | 50% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 5 mph SE | 15% |
| Friday | 71°F | Slight Chance Rain Showers | 5 to 10 mph SE | 17% |
| Friday Night | 59°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph SE | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for North Sioux City, SD
Last spring frost
Apr 29
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5a
Explore more for North Sioux City, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Sioux City Ang, Ia (11 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.