Sioux Center, IA Weather & Growing Conditions
Today
71°F
Patchy Smoke
Patchy smoke and scattered showers and thunderstorms before 11am, then patchy smoke and showers and thunderstorms between 11am and 5pm, then patchy smoke and scattered rain showers. Mostly cloudy, with a high near 71. North northwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Patchy Smoke | 5 to 10 mph NNW | 82% |
| Tonight | 53°F | Scattered Rain Showers then Mostly Cloudy | 0 to 5 mph WNW | 54% |
| 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 | 62°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 | 87°F | Mostly Sunny | 10 mph SE | 13% |
| Sunday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 20% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 10 to 15 mph E | 20% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sioux Center, IA
Last spring frost
Apr 30
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a
Explore more for Sioux Center, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Sioux Ctr 2 Se, Ia (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.