Weather in Sioux Falls, SD
Sioux Falls, Wednesday, 21 October, 14:00
Clear. Feels like 69°. High 70°, low 47°.
Monthly outlook for Sioux Falls, SD: average high 58.1°, average low 44°. That is 2.3° above the climate normal for October. Precipitation is expected on 7 days (about 2.8 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 22 October (75.2°), the coolest 3 November (34.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 61.5° | 55.7° | +3.2° |
| 31 October – 9 November | 52.4° | 49.9° | +1.4° |
| 10 November – 19 November | at normal | 44.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Worthing (15 mi).
0
Sioux Falls, Thursday, 22 October
Mostly clear. High 75°, low 51°.
0
Sioux Falls, Friday, 23 October
Overcast. High 71°, low 56°.
0.2
Sioux Falls, Saturday, 24 October
Rain. High 71°, low 55°.
0.17Sioux Falls, Sunday, 25 October
Light rain. High 61°, low 50°.
1.45Sioux Falls, Monday, 26 October
Heavy rain. High 54°, low 43°.
0.19Sioux Falls, Tuesday, 27 October
Light rain. High 50°, low 42°.
0
Sioux Falls, Wednesday, 28 October
Partly cloudy. High 59°, low 44°.
0Sioux Falls, Thursday, 29 October
Overcast. High 52°, low 37°.
0.03Sioux Falls, Friday, 30 October
Light rain. High 53°, low 41°.
0.6Sioux Falls, Saturday, 31 October
Rain. High 64°, low 47°.
0Sioux Falls, Sunday, 1 November
Overcast. High 53°, low 43°.
0Sioux Falls, Monday, 2 November
Clear. High 51°, low 36°.
0Sioux Falls, Tuesday, 3 November
Clear. High 54°, low 35°.
0.11Sioux Falls, Wednesday, 4 November
Light rain. High 49°, low 38°.
0.09Sioux Falls, Thursday, 5 November
Light rain. High 44°, low 41°.
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.
0.07Sioux Falls, Sunday, 15 November
Climate normal for this date — 60-year average.
0.08Sioux Falls, Monday, 16 November
Climate normal for this date — 60-year average.
0.06Sioux Falls, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Sioux Falls, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Sioux Falls, Thursday, 19 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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