Weather in Sioux Falls, SD
Sioux Falls, Friday, 16 October, 20:59
Clear. Feels like 39°. High 51°, low 39°.
Monthly outlook for Sioux Falls, SD: average high 60.9°, average low 44.7°. That is 2.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 23 October (73.9°), the coolest 17 October (35.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 63.5° | 58° | +3° |
| 26 October – 4 November | 56.7° | 52.5° | +2.3° |
| 5 November – 14 November | at normal | 46.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Worthing (15 mi).
0
Sioux Falls, Saturday, 17 October
Clear. High 60°, low 36°.
0Sioux Falls, Sunday, 18 October
Clear. High 64°, low 45°.
0
Sioux Falls, Monday, 19 October
Overcast. High 62°, low 44°.
0Sioux Falls, Tuesday, 20 October
Clear. High 66°, low 48°.
0.01
Sioux Falls, Wednesday, 21 October
Light rain. High 69°, low 52°.
0
Sioux Falls, Thursday, 22 October
Mostly clear. High 73°, low 52°.
0.19Sioux Falls, Friday, 23 October
Rain. High 74°, low 62°.
0
Sioux Falls, Saturday, 24 October
Partly cloudy. High 64°, low 46°.
0.01Sioux Falls, Sunday, 25 October
Light rain. High 52°, low 39°.
0.07Sioux Falls, Monday, 26 October
Light rain. High 63°, low 44°.
0Sioux Falls, Tuesday, 27 October
Partly cloudy. High 57°, low 40°.
0Sioux Falls, Wednesday, 28 October
Partly cloudy. High 59°, low 41°.
0.49Sioux Falls, Thursday, 29 October
Rain. High 49°, low 42°.
0.03Sioux Falls, Friday, 30 October
Light rain. High 53°, low 42°.
0Sioux Falls, Saturday, 31 October
Clear. High 59°, low 41°.
0.07Sioux Falls, Sunday, 1 November
Climate normal for this date — 60-year average.
0.04Sioux Falls, Monday, 2 November
Climate normal for this date — 60-year average.
0.05Sioux Falls, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Sioux Falls, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Sioux Falls, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Sioux Falls, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Sioux Falls, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Sioux Falls, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Sioux Falls, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Sioux Falls, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.05Sioux Falls, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Sioux Falls, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Sioux Falls, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Sioux Falls, Saturday, 14 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 Falls, SD 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 Falls, SD 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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