Sioux Center, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sioux Center, a city in Sioux County, Iowa.
Tonight
63°F
Mostly Cloudy then Areas Of Fog
Areas of fog between midnight and 1am, then areas of fog and a chance of showers and thunderstorms between 1am and 4am, then areas of fog and a chance of showers and thunderstorms between 4am and 5am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy. Low around 63, with temperatures rising to around 66 overnight. North wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Sioux Center
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Mostly Cloudy then Areas Of Fog | 5 to 10 mph N | 33% |
| Saturday | 70°F | Patchy Fog then Cloudy | 5 to 10 mph N | 23% |
| Saturday Night | 57°F | Mostly Cloudy | 10 mph NNE | 12% |
| Sunday | 65°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph NE | 30% |
| Sunday Night | 53°F | Rain Showers Likely | 5 to 10 mph ENE | 64% |
| Monday | 59°F | Rain Showers Likely | 10 mph ENE | 64% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 mph ENE | 38% |
| Tuesday | 61°F | Partly Sunny | 5 mph E | 8% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph ESE | 0% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph SE | 8% |
| Wednesday Night | 51°F | Mostly Cloudy then Chance Rain Showers | 5 mph SSE | 36% |
| Thursday | 67°F | Chance Rain Showers | 5 mph SSE | 36% |
| Thursday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph SE | 17% |
| Friday | 68°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SE | 17% |
Forecast source: National Weather Service (api.weather.gov) for Sioux Center (43.075, -96.170). Updated through the day.
Growing snapshot for Sioux Center
Last spring frost
Apr 30
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a
More local growing data for Sioux Center: nearby ZIP 51250 weather · frost dates · planting calendar · Iowa frost dates
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Climate data from the nearest NOAA station, Sioux Ctr 2 Se, Ia (3.6 mi from Sioux Center). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.