Weather in Sioux City, IA
Sioux City, Sunday, 25 October, 06:24
Overcast. Feels like 42°. High 62°, low 47°.
Monthly outlook for Sioux City, IA: average high 61.9°, average low 47.9°. That is 4.5° above the climate normal for October. Precipitation is expected on 8 days (about 1.5 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 1 November (69.7°), the coolest 4 November (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 63.4° | 55.2° | +4.5° |
| 4 November – 13 November | 59.3° | 49.4° | +5.5° |
| 14 November – 23 November | at normal | 45.4° | — |
October records over 66 years
0.32
Sioux City, Monday, 26 October
Rain. High 58°, low 45°.
0.05Sioux City, Tuesday, 27 October
Light rain. High 62°, low 46°.
0.08Sioux City, Wednesday, 28 October
Rain. High 69°, low 54°.
0
Sioux City, Thursday, 29 October
Clear. High 67°, low 49°.
0.12Sioux City, Friday, 30 October
Light rain. High 66°, low 56°.
0.28Sioux City, Saturday, 31 October
Rain. High 62°, low 58°.
0Sioux City, Sunday, 1 November
Overcast. High 70°, low 56°.
0.14Sioux City, Monday, 2 November
Light rain. High 67°, low 53°.
0Sioux City, Tuesday, 3 November
Overcast. High 52°, low 44°.
0Sioux City, Wednesday, 4 November
Clear. High 58°, low 38°.
0
Sioux City, Thursday, 5 November
Mostly clear. High 63°, low 45°.
0Sioux City, Friday, 6 November
Overcast. High 69°, low 46°.
0Sioux City, Saturday, 7 November
Overcast. High 53°, low 43°.
0.02Sioux City, Sunday, 8 November
Light rain. High 55°, low 40°.
0.11Sioux City, Monday, 9 November
Light rain. High 58°, low 45°.
0.09
Sioux City, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Sioux City, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Sioux City, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Sioux City, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Sioux City, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Sioux City, Sunday, 15 November
Climate normal for this date — 60-year average.
0.08Sioux City, Monday, 16 November
Climate normal for this date — 60-year average.
0.06Sioux City, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Sioux City, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Sioux City, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Sioux City, Friday, 20 November
Climate normal for this date — 60-year average.
0.04Sioux City, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Sioux City, Sunday, 22 November
Climate normal for this date — 60-year average.
0.04Sioux City, Monday, 23 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Sioux City, IA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Sioux City, IA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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