South Dakota · NWS FSD office

Sioux Falls, SD weather

It is 54°F and fog/mist at Sioux Falls, Foss Field as of Oct 28, 4:05 AM CDT. Overnight: Patchy Fog, low near 48°F, 3% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 2:03 AM CDT.

Updated Oct 28, 4:14 AM CDT (snapshot)

Current conditions

Temperature

54°F

Fog/Mist

Wind

S 8 mph

Humidity 100% · dew point 54°F

Pressure · visibility

29.98 inHg

Visibility 5 mi

Observed at Sioux Falls, Foss Field (KFSD), Oct 28, 4:05 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Sioux Falls forecast zone right now.

Around the NWS FSD forecast area

No active alerts in zones served by the FSD office near Sioux Falls.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. South Dakota has 1 active alert: see it.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Sioux Falls (local time)
TimeTempForecastPrecip. chanceWind
Wed 6 AM52°FChance Rain Showers14%SSE 5 mph
Wed 7 AM50°FChance Rain Showers25%SSE 5 mph
Wed 8 AM52°FPatchy Fog18%SSE 5 mph
Wed 9 AM53°FChance Rain Showers11%SSE 10 mph
Wed 10 AM57°FChance Rain Showers12%SSE 10 mph
Wed 11 AM59°FChance Rain Showers26%S 10 mph
Wed 12 PM61°FChance Rain Showers32%S 10 mph
Wed 1 PM62°FChance Showers And Thunderstorms36%S 15 mph
Wed 2 PM64°FShowers And Thunderstorms Likely60%S 10 mph
Wed 3 PM64°FChance Showers And Thunderstorms52%SSW 10 mph
Wed 4 PM64°FChance Rain Showers47%SW 10 mph
Wed 5 PM65°FChance Rain Showers31%WSW 10 mph
Wed 6 PM63°FSlight Chance Rain Showers18%W 10 mph
Wed 7 PM61°FMostly Cloudy0%WNW 10 mph
Wed 8 PM59°FPartly Cloudy0%NW 5 mph
Wed 9 PM54°FPartly Cloudy0%NW 5 mph
Wed 10 PM52°FPartly Cloudy0%NW 5 mph
Wed 11 PM51°FPartly Cloudy0%NW 5 mph
Thu 12 AM49°FPartly Cloudy0%NW 5 mph
Thu 1 AM47°FPartly Cloudy0%NW 5 mph
Thu 2 AM45°FPartly Cloudy0%NNW 5 mph
Thu 3 AM44°FPartly Cloudy0%NNW 5 mph
Thu 4 AM42°FPartly Cloudy0%N 5 mph
Thu 5 AM42°FMostly Cloudy0% 0 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Sioux Falls can differ.

7-day forecast

Overnight

Low 48°F

Patchy fog. Cloudy. Low around 48, with temperatures rising to around 52 overnight. South southeast wind around 5 mph.

Wednesday

High 66°F·Low 40°F

A chance of rain showers and patchy fog before 8am, then a chance of rain showers and patchy fog between 8am and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 66. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 40. Northwest wind 0 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 62°F·Low 43°F

Mostly sunny. High near 62, with temperatures falling to around 59 in the afternoon. East northeast wind 0 to 5 mph.

Thursday Night: Partly cloudy, with a low around 43. East southeast wind around 5 mph.

Friday

High 61°F·Low 46°F

Mostly cloudy, with a high near 61. East wind 5 to 10 mph.

Friday Night: A chance of rain showers after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.

Saturday

High 62°F·Low 51°F

A chance of rain showers. Cloudy, with a high near 62. Chance of precipitation is 50%.

Saturday Night: A chance of rain showers. Cloudy, with a low around 51. Chance of precipitation is 30%.

Sunday

High 64°F·Low 53°F

A slight chance of rain showers before noon. Mostly cloudy, with a high near 64.

Sunday Night: A chance of rain showers after midnight. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.

Monday

High 61°F·Low 48°F

Rain showers likely. Cloudy, with a high near 61. Chance of precipitation is 70%.

Monday Night: Rain showers likely. Cloudy, with a low around 48. Chance of precipitation is 60%.

Tuesday

High 58°F

A chance of rain showers. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.

Nearby cities

See every city we cover in South Dakota, or check all active alerts.

About this forecast

Forecast office
Sioux Falls is served by the National Weather Service FSD forecast office, forecast zone SDZ062, county zone SDC099.
Location used
The Census Bureau's internal point for Sioux Falls (43.5407, -96.7320), in Minnehaha County. Population: 209,289 (2024 estimate), number 1 of the 5 South Dakota cities on this site.
Radar
Nearest NWS radar: KFSD. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/43.5407,-96.732 (forecast issued Oct 28, 2:03 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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