Monthly outlook for Sioux Falls, SD: average high 57.4°, average low 44.2°. That is 2.3° above the climate normal for October. Precipitation is expected on 8 days (about 2.3 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 22 October (77.5°), the coolest 4 November (33.1°).
57.4°/44.2°
Average high / low
+2.3°
Above normal
8 / 3
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
60.3°
55°
+2.9°
1 November – 10 November
52.5°
49.2°
+1.9°
11 November – 20 November
at normal
43.7°
—
October records over 66 years
89.1°3 October 2025All-time high
13.8°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Worthing (15 mi).
Fri, 2377° / 56°0.24
77 °
Sioux Falls, Friday, 23 October
Rain. High 77°, low 56°.
Pressure30.00 inHg
Wind11.7 mph SE
Humidity74%
Visibility6.2 mi
Dew point54°
Sat, 2468° / 51°0.09
68 °
Sioux Falls, Saturday, 24 October
Light rain. High 68°, low 51°.
Pressure30.12 inHg
Wind12.5 mph NW
Humidity67%
Visibility6.2 mi
Dew point53°
Sun, 2551° / 46°0.17
51 °
Sioux Falls, Sunday, 25 October
Rain. High 51°, low 46°.
Pressure30.45 inHg
Wind6.6 mph NE
Humidity64%
Visibility5.0 mi
Dew point37°
Mon, 2648° / 44°0.8
48 °
Sioux Falls, Monday, 26 October
Rain. High 48°, low 44°.
Pressure30.39 inHg
Wind10.6 mph E
Humidity92%
Visibility4.3 mi
Dew point44°
Tue, 2760° / 52°0.09
60 °
Sioux Falls, Tuesday, 27 October
Light rain. High 60°, low 52°.
Pressure30.12 inHg
Wind12.4 mph SE
Humidity70%
Visibility—
Dew point46°
Wed, 2867° / 51°0.04
67 °
Sioux Falls, Wednesday, 28 October
Light rain. High 67°, low 51°.
Pressure29.77 inHg
Wind14.8 mph W
Humidity82%
Visibility—
Dew point54°
Thu, 2950° / 41°0
50 °
Sioux Falls, Thursday, 29 October
Overcast. High 50°, low 41°.
Pressure30.24 inHg
Wind13.8 mph NW
Humidity63%
Visibility—
Dew point35°
Fri, 3049° / 40°0.09
49 °
Sioux Falls, Friday, 30 October
Light rain. High 49°, low 40°.
Pressure30.15 inHg
Wind12.5 mph E
Humidity69%
Visibility—
Dew point38°
Sat, 3156° / 46°0.83
56 °
Sioux Falls, Saturday, 31 October
Rain. High 56°, low 46°.
Pressure29.68 inHg
Wind13.3 mph W
Humidity91%
Visibility—
Dew point53°
Sun, 0157° / 39°0
57 °
Sioux Falls, Sunday, 1 November
Clear. High 57°, low 39°.
Pressure30.00 inHg
Wind10.5 mph W
Humidity51%
Visibility—
Dew point34°
Mon, 0245° / 39°0.01
45 °
Sioux Falls, Monday, 2 November
Light rain. High 45°, low 39°.
Pressure30.24 inHg
Wind12.2 mph W
Humidity82%
Visibility—
Dew point36°
Tue, 0343° / 39°0
43 °
Sioux Falls, Tuesday, 3 November
Overcast. High 43°, low 39°.
Pressure30.45 inHg
Wind10.4 mph NW
Humidity90%
Visibility—
Dew point38°
Wed, 0448° / 33°0
48 °
Sioux Falls, Wednesday, 4 November
Partly cloudy. High 48°, low 33°.
Pressure30.27 inHg
Wind15.3 mph NW
Humidity53%
Visibility—
Dew point28°
Thu, 0558° / 37°0
58 °
Sioux Falls, Thursday, 5 November
Overcast. High 58°, low 37°.
Pressure30.03 inHg
Wind12.8 mph W
Humidity41%
Visibility—
Dew point29°
Fri, 0664° / 47°0
64 °
Sioux Falls, Friday, 6 November
Clear. High 64°, low 47°.
Pressure29.94 inHg
Wind9.4 mph W
Humidity47%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0749° / 33°0.02
49 °
Sioux Falls, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high72° (2001)
Record low-12° (1991)
Sun, 0849° / 33°0.06
49 °
Sioux Falls, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation17%
Record high77° (1999)
Record low-2° (1991)
Mon, 0947° / 32°0.13
47 °
Sioux Falls, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.13 in
Chance of precipitation22%
Record high72° (1999)
Record low14° (2018)
Tue, 1045° / 29°0.09
45 °
Sioux Falls, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.09 in
Chance of precipitation22%
Record high66° (2016)
Record low9° (1986)
Wed, 1143° / 28°0.05
43 °
Sioux Falls, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.05 in
Chance of precipitation18%
Record high66° (2005)
Record low2° (1986)
Thu, 1243° / 27°0.06
43 °
Sioux Falls, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high67° (2001)
Record low6° (1986)
Fri, 1345° / 29°0.04
45 °
Sioux Falls, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high70° (1999)
Record low1° (1986)
Sat, 1445° / 30°0.02
45 °
Sioux Falls, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high74° (2025)
Record low7° (2014)
Sun, 1546° / 29°0.07
46 °
Sioux Falls, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.07 in
Chance of precipitation20%
Record high66° (2001)
Record low1° (2000)
Mon, 1645° / 29°0.08
45 °
Sioux Falls, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.08 in
Chance of precipitation17%
Record high70° (2001)
Record low-2° (2014)
Tue, 1744° / 29°0.06
44 °
Sioux Falls, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.06 in
Chance of precipitation18%
Record high68° (2001)
Record low4° (2014)
Wed, 1844° / 28°0.06
44 °
Sioux Falls, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.06 in
Chance of precipitation25%
Record high69° (1999)
Record low0° (2014)
Thu, 1943° / 29°0.09
43 °
Sioux Falls, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.09 in
Chance of precipitation23%
Record high62° (2003)
Record low10° (1985)
Fri, 2041° / 27°0.07
41 °
Sioux Falls, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.07 in
Chance of precipitation18%
Record high64° (1962)
Record low-1° (2014)
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.