Sioux City weather
Temperature, rain and wind in Sioux City (Iowa, United States), a city of about 82,821 people: how it is right now, hour by hour into tomorrow, the next 7 days and what each month of the year is like.
Right now
Thursday 15 October, 20:00 (America/Chicago)
51 °F
Partly cloudy
Feels like
46 °F
Humidity
54%
Wind
16 mph
NW · Beaufort 4
Dew point
35 °F
Cloud cover
73%
Pressure
1,023 hPa
Hour by hour
Next 24 hours, in the city’s local time.
| Time | Conditions | Temperature | Rain | Wind |
|---|---|---|---|---|
| 19:00 | Fair | 54 °F | 0.00 in | 20 mph |
| 20:00 | Partly cloudy | 51 °F | 0.00 in | 16 mph |
| 21:00 | Cloudy | 52 °F | 0.00 in | 18 mph |
| 22:00 | Cloudy | 51 °F | 0.00 in | 18 mph |
| 23:00 | Partly cloudy | 50 °F | 0.00 in | 18 mph |
| 00:00 | Fair | 49 °F | 0.00 in | 18 mph |
| 01:00 | Partly cloudy | 48 °F | 0.00 in | 19 mph |
| 02:00 | Cloudy | 48 °F | 0.00 in | 19 mph |
| 03:00 | Cloudy | 48 °F | 0.00 in | 21 mph |
| 04:00 | Cloudy | 48 °F | 0.00 in | 21 mph |
| 05:00 | Cloudy | 48 °F | 0.00 in | 22 mph |
| 06:00 | Cloudy | 47 °F | 0.00 in | 21 mph |
| 07:00 | Cloudy | 46 °F | 0.00 in | 21 mph |
| 08:00 | Cloudy | 46 °F | 0.00 in | 22 mph |
| 09:00 | Cloudy | 46 °F | 0.00 in | 22 mph |
| 10:00 | Cloudy | 46 °F | 0.00 in | 21 mph |
| 11:00 | Cloudy | 46 °F | 0.00 in | 19 mph |
| 12:00 | Fair | 47 °F | 0.00 in | 18 mph |
| 13:00 | Clear sky | 49 °F | 0.00 in | 16 mph |
| 14:00 | Clear sky | 51 °F | 0.00 in | 15 mph |
| 15:00 | Clear sky | 52 °F | 0.00 in | 14 mph |
| 16:00 | Clear sky | 52 °F | 0.00 in | 13 mph |
| 17:00 | Clear sky | 52 °F | 0.00 in | 12 mph |
| 18:00 | Clear sky | 50 °F | 0.00 in | 9 mph |
Next 7 days
| Day | Conditions | Low | High | Rain outlook |
|---|---|---|---|---|
| Thu 15/10 | Fair | 48 °F | 54 °F | no rain expected · 0.00 in |
| Fri 16/10 | Fair | 37 °F | 52 °F | no rain expected · 0.00 in |
| Sat 17/10 | Clear sky | 37 °F | 59 °F | no rain expected · 0.00 in |
| Mon 19/10 | Cloudy | 48 °F | 61 °F | no rain expected · 0.00 in |
| Tue 20/10 | Clear sky | 48 °F | 67 °F | no rain expected · 0.00 in |
| Wed 21/10 | Clear sky | 54 °F | 70 °F | no rain expected · 0.00 in |
| Thu 22/10 | Clear sky | 51 °F | 73 °F | no rain expected · 0.00 in |
This column is our own reading: the global model does not publish a probability of precipitation for this region, so we classify the day from the forecast symbol and the total in millimetres. It is not an official probability figure.
America/Chicago
What each number means
- Rain (mm)
- 1 millimetre of rain is 1 litre of water per square metre. Up to 2 mm in a day is drizzle; from 10 mm it is proper rain; more than 50 mm in a few hours is the amount that floods streets.
- Humidity
- Relative humidity is how much water vapour the air holds compared with the most it can hold at that temperature. Above 80% sweat evaporates slowly and heat feels worse; below 30% your throat and eyes dry out.
- Dew point
- The dew point is the temperature at which the air would start to condense. The closer it is to the air temperature, the muggier it feels. Above 20 °C the air already feels heavy.
- Feels like
- "Feels like" combines temperature, wind and humidity: strong wind carries heat away from the body, so it feels colder than the thermometer; high humidity in the heat makes it feel warmer.
- Wind
- Wind is given as a speed and the direction it blows from. Up to 20 km/h you barely notice it; at 40 km/h it moves branches and parasols; above 60 km/h it brings down trees and roof tiles.
- Cloud cover
- Cloud cover as a percentage is how much of the sky is covered. Up to 20% is a clear sky; above 80% the sun barely gets through.
- Chance of rain
- The model does not publish a probability of precipitation for this region. This column is our own reading: the global model does not publish a probability of precipitation for this region, so we classify the day from the forecast symbol and the total in millimetres. It is not an official probability figure.
No climatology available for this coordinate.
Frequently asked questions
- Will it rain tomorrow in Sioux City?
- no rain expected. Rain: 0.00 in. Low 37 °F, High 52 °F.
- What is the temperature in Sioux City right now?
- 51 °F, partly cloudy. Feels like: 46 °F. Humidity: 54%.
- What will the weather be like at the weekend in Sioux City?
- Sat 17/10: clear sky, 37 °F / 59 °F, no rain expected.
- How far ahead does this Sioux City forecast go?
- This page shows 7 days. The model run used here is from 15/10/2026, 23:19 UTC, and the page fetches a new one every 30 minutes.
Nearby cities
Forecasts for places near Sioux City:
- Norfolk 99 km
- Fremont 119 km
- Sioux Falls 119 km
- Columbus 143 km
- Omaha 143 km
- Council Bluffs 145 km
- La Vista 150 km
- Papillion 153 km
How to read this page
How to read the min and the max
The week’s high (73 °F) arrives in the afternoon, about two hours after solar noon; the low (37 °F) just before sunrise. Both are air temperature in the shade, two metres above ground — in direct sun or over asphalt a thermometer reads higher.
Where this number comes from
The Sioux City forecast comes from MET Norway, a partir do ECMWF HRES e, na área nórdica, do MEPS, run of 15/10/2026, 23:19 UTC. The month-by-month climate comes from NASA POWER, climatology of 2001–2020. Both are credited in full at the foot of this page.
What a forecast cannot promise
Out to two days accuracy is high; by day seven the trend matters more than the exact figure. For Sioux City the model publishes no rain probability, so the expectation column is our reading.
Severe weather warnings
This page is informational. For official warnings of storms, gales or flooding affecting Sioux City, go to your national weather service through the World Meteorological Organization warning portal.
Understanding the weather and climate of Sioux City
Is this week in Sioux City above or below the October normal?
Within the week the highest maximum lands on Thu 22/10 (73 °F) and the lowest minimum on Fri 16/10 (37 °F). None of the 7 forecast days collects measurable rain in Sioux City.
What does the dew point say about how Sioux City feels?
Right now in Sioux City the air is at 51 °F with a dew point of 35 °F and relative humidity of 54%. That distance between temperature and dew point is the comfortable band: the body can cool itself by evaporation without effort.
How far is Sioux City from Omaha?
The nearest large city to Sioux City is Omaha, about 143 km away in a straight line, to the south, with 486,051 inhabitants. At that distance it is already common for Sioux City and Omaha to have different days, because a front or a squall line takes hours to cross the gap. Being larger, Omaha shows up in more searches, and plenty of people end up reading its forecast assuming it covers Sioux City.
Words on this page
Apparent temperature
The temperature the body actually feels, rather than the one on the thermometer. It combines air temperature with wind, which carries heat away faster, and humidity, which slows the evaporation of sweat. That is why 30 °C in dry air with a breeze is easier than 28 °C in still, muggy air.
Dew point
The temperature air would have to cool to, at constant pressure and moisture, for water to start condensing. The closer the dew point sits to the air temperature, the less room the vapour has and the muggier the day feels.
Millimetre of rain
The depth of water rain would leave on a flat surface with no run-off. One millimetre is one litre per square metre, no matter how large the area measured is.
Standard definition by World Meteorological Organization (WMO) · Millimetre of rain
Beaufort scale
A 0-to-12 scale that describes wind strength by what it visibly does: smoke rising straight up at 0, leaves moving at 3, large branches bending at 6, roof damage at 9, devastation at 12. It began at sea in the nineteenth century and now has an official equivalence in metres per second.
Standard definition by World Meteorological Organization (WMO) · Beaufort scale
Forecast model
A program that solves the equations of the atmosphere on a grid of points and steps forward in time from the state observed now. Your city forecast is the model value at the nearest grid point, which is why two neighbouring towns get almost the same numbers.
Standard definition by MET Norway (Meteorologisk institutt) · Forecast model
Model run
The time the model was executed with the latest observations. Every forecast belongs to a run, and runs age: one from six hours ago knows nothing about the shower that started afterwards. It is the first thing to check when two sources disagree.
Standard definition by MET Norway (Meteorologisk institutt) · Model run
Climate normal
The average of a climate element — temperature, rainfall, humidity — computed over a long, standardised period, usually thirty years. It does not predict anything: it says what is typical for that place in that month, and gives you a ruler for calling a week warm or wet.
Standard definition by World Meteorological Organization (WMO) · Climate normal
Source, model and licence
- Model
- MET Norway, a partir do ECMWF HRES e, na área nórdica, do MEPS
- Model run
- 15/10/2026, 23:19 UTC
- Source
- MET Norway (Meteorologisk institutt) — Locationforecast 2.0 — Based on data from MET Norway. Licence: CC BY 4.0 / NLOD 2.0.
- Cities, coordinates and population
- Dados de cidades: GeoNames (CC BY 4.0)
The page fetches fresh data every 30 minutes. Informational content. For severe weather warnings, follow your country’s official weather service and civil protection authority.