Sioux Center, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sioux Center, a city in Sioux County, Iowa.
Today
72°F
Patchy Smoke
Patchy smoke and a chance of showers and thunderstorms before 7am, then patchy smoke and a slight chance of rain showers between 7am and 8am, then a chance of rain showers and patchy smoke between 8am and 10am, then patchy smoke and a chance of showers and thunderstorms between 10am and 1pm, then patchy smoke and showers and thunderstorms likely between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then a chance of rain showers and patchy smoke. Mostly cloudy, with a high near 72. North wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Sioux Center
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke | 5 to 10 mph N | 56% |
| Tonight | 53°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NW | 45% |
| Wednesday | 75°F | Mostly Sunny | 0 mph | 1% |
| Wednesday Night | 53°F | Mostly Clear | 0 to 5 mph SSE | 0% |
| Thursday | 81°F | Mostly Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 to 10 mph S | 2% |
| Friday | 86°F | Sunny | 5 to 10 mph SSW | 4% |
| Friday Night | 65°F | Mostly Clear | 5 to 10 mph S | 12% |
| Saturday | 89°F | Sunny | 5 to 15 mph S | 5% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SSE | 19% |
| Sunday | 88°F | Mostly Sunny | 10 mph SE | 14% |
| Sunday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 19% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 10 to 15 mph E | 19% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 24% |
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 Aug 4, 2026.