Weather in Sioux Falls, SD
Sioux Falls, Sunday, 18 October, 09:00
Clear. Feels like 38°. High 65°, low 44°.
Monthly outlook for Sioux Falls, SD: average high 58.8°, average low 43.1°. That is 1.9° above the climate normal for October. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 22 October (70.6°), the coolest 1 November (24.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 63.3° | 57.3° | +3.3° |
| 28 October – 6 November | 51.3° | 51.4° | -0.1° |
| 7 November – 16 November | at normal | 45.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Worthing (15 mi).
0
Sioux Falls, Monday, 19 October
Partly cloudy. High 62°, low 41°.
0Sioux Falls, Tuesday, 20 October
Clear. High 66°, low 46°.
0Sioux Falls, Wednesday, 21 October
Clear. High 68°, low 49°.
0
Sioux Falls, Thursday, 22 October
Mostly clear. High 71°, low 51°.
0.17
Sioux Falls, Friday, 23 October
Light rain. High 70°, low 56°.
0.11Sioux Falls, Saturday, 24 October
Light rain. High 63°, low 46°.
0Sioux Falls, Sunday, 25 October
Clear. High 55°, low 38°.
0.05Sioux Falls, Monday, 26 October
Light rain. High 57°, low 43°.
0.23Sioux Falls, Tuesday, 27 October
Light rain. High 57°, low 51°.
0.1Sioux Falls, Wednesday, 28 October
Light rain. High 65°, low 51°.
0Sioux Falls, Thursday, 29 October
Clear. High 59°, low 45°.
0.24Sioux Falls, Friday, 30 October
Light rain. High 55°, low 37°.
0.4
Sioux Falls, Saturday, 31 October
Snow. High 34°, low 32°.
0Sioux Falls, Sunday, 1 November
Mostly clear. High 38°, low 24°.
0
Sioux Falls, Monday, 2 November
Overcast. High 56°, low 35°.
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.
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.
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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