Sioux City weather
At 6:30 PM local time it was partly cloudy and 15°C (59°F). Light rain for 1 of the next 24 hours (under 1 mm/h, 0.4 mm total) — cloudy, but fine to be out. Best months for weather: May–Oct. Sioux City sits 371 m (1,217 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Sioux City, Iowa, United States.
Current conditions
- Clouds
- 78%
- Chance of rain
- 3%
- Rain
- 0.0 mm/h
Hourly Forecast
Light rain for 1 of the next 24 hours (under 1 mm/h, 0.4 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season May–OctOff season Nov–Mar
About Sioux City weather
Is it raining in Sioux City right now?
No. It’s partly cloudy and 15° right now. Light rain for 1 of the next 24 hours (under 1 mm/h, 0.4 mm total) — cloudy, but fine to be out.
What’s the weather like in Sioux City this week?
Over the next 7 days, expect highs of 12–21° and lows of 5–15°. Rain is likely on 2 of 7 days (Monday, Tuesday). The driest day looks like Thursday.
Has it been raining in Sioux City lately?
In the past 7 days, Sioux City had 2 rainy days and 12.9 mm of rain in total.
What should I pack for Sioux City?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Sioux City weather by month
When is the best time to visit Sioux City?
Based on weather alone, the best time to visit Sioux City is May–Oct, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from -2°C (29°F) in January to 31°C (88°F) in July.
What is the rainiest month in Sioux City?
June is the wettest month, with about 113 mm (4.4 in) of rain on average. January is the driest, with about 16 mm (0.6 in).
What is the hottest month in Sioux City?
July is the warmest, with average highs of 31°C (88°F) and lows of 19°C (66°F). January is the coolest, with highs of -2°C (29°F) and lows of -11°C (12°F).
Does Sioux City have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is June at about 113 mm (4.4 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months