Current Conditions

Sioux Falls, South Dakota

79°F26°C
Clear

Wind

NW 4 mph7 km/h

Humidity

61%

Cloud Cover

8%

As of Tuesday, September 8, 2026 at 8:09 PM CDT

Today's Outlook

Night

Partly cloudy, with a low around 58°F14°C. Light wind from the NW around 5 mph8 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 80°F27°CLow 58°F14°CPrecip 0 in0 mmCloud 18%Wind NW 7 mph11 km/hWednesday: Mostly clear and warm, with a high of 80°F27°C and morning low of 58°F14°C. Breezy from the NW at 8 to 10 mph14 to 16 km/h. Wednesday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the NW around 5 mph8 km/h.
ClearHigh 83°F28°CLow 51°F11°CPrecip 0 in0 mmCloud 3%Wind S 9 mph14 km/hThursday: Mostly clear and warm, with a high of 83°F28°C and morning low of 51°F11°C. Breezy from the S at 9 to 14 mph15 to 22 km/h. Thursday Night: Mostly clear, with a low around 55°F13°C. Breezy from the SSE at 8 to 14 mph14 to 23 km/h.
ShowersHigh 88°F31°CFeels 92°F33°CLow 65°F19°CPrecip 0.05 in1.3 mm30%Cloud 28%Wind S 16 mph26 km/hFriday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 65°F19°C. Windy from the S at 18 to 20 mph28 to 32 km/h. Humid. Friday Night: Mostly clear, with a low around 66°F19°C. Breezy from the S at 14 to 15 mph23 to 24 km/h. 30% chance of showers in the evening.
ClearHigh 73°F23°CLow 57°F14°CPrecip 0.01 in0.2 mm4%Cloud 22%Wind N 10 mph16 km/hSaturday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Breezy from the NNW at 10 to 12 mph17 to 19 km/h. Dry air. Saturday Night: Mostly clear, with a low around 59°F15°C. Breezy from the N at 9 to 13 mph14 to 21 km/h.
ShowersHigh 70°F21°CLow 53°F12°CPrecip 0.24 in6.1 mm43%Cloud 56%Wind E 9 mph14 km/hSunday: Mostly cloudy and warm, with a high of 70°F21°C and morning low of 53°F12°C. Breezy from the E at 9 to 11 mph15 to 18 km/h. 43% chance of showers throughout the day. Dry air. Sunday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the E at 8 to 12 mph13 to 19 km/h. 15% chance of drizzle throughout the night.
RainHigh 76°F24°CLow 61°F16°CPrecip 0.32 in8.1 mm42%Cloud 68%Wind SSE 13 mph21 km/hMonday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Breezy from the SSE at 14 to 15 mph23 to 25 km/h. 42% chance of light rain throughout the day. Monday Night: Mostly cloudy, with a low around 61°F16°C. Breezy from the SE at 11 to 13 mph18 to 22 km/h. 42% chance of rain throughout the night.
ClearHigh 74°F23°CLow 55°F13°CPrecip 0.02 in0.6 mm9%Cloud 33%Wind WNW 8 mph13 km/hTuesday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 55°F13°C. Breezy from the NW at 9 to 10 mph14 to 16 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the WNW at 7 to 9 mph11 to 14 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 980°F27°C58°F14°C0 in0 mm· —18%ClearNW 7 mph11 km/h
ThursdaySep 1083°F28°C51°F11°C0 in0 mm· —3%ClearS 9 mph14 km/h
FridaySep 1188°F31°C
Feels 92°F33°C
65°F19°C0.05 in1.3 mm· 30%28%ShowersS 16 mph26 km/h
SaturdaySep 1273°F23°C57°F14°C0.01 in0.2 mm· 4%22%ClearN 10 mph16 km/h
SundaySep 1370°F21°C53°F12°C0.24 in6.1 mm· 43%56%ShowersE 9 mph14 km/h
MondaySep 1476°F24°C61°F16°C0.32 in8.1 mm· 42%68%RainSSE 13 mph21 km/h
TuesdaySep 1574°F23°C55°F13°C0.02 in0.6 mm· 9%33%ClearWNW 8 mph13 km/h
WednesdaySep 1672°F22°C54°F12°C0.23 in5.8 mm· 36%57%ShowersSE 9 mph15 km/h
ThursdaySep 1771°F22°C59°F15°C0.26 in6.7 mm· 38%64%ShowersN 10 mph16 km/h
FridaySep 1870°F21°C52°F11°C0.15 in3.7 mm· 20%48%ShowersNW 9 mph14 km/h
SaturdaySep 1970°F21°C51°F11°C0.07 in1.8 mm· 13%44%DrizzleN 8 mph14 km/h
SundaySep 2068°F20°C49°F9°C
Feels 46°F8°C
0.09 in2.2 mm· 16%49%DrizzleE 8 mph13 km/h
MondaySep 2168°F20°C49°F9°C
Feels 45°F7°C
0.09 in2.2 mm· 16%55%DrizzleSE 9 mph15 km/h
TuesdaySep 2267°F20°C50°F10°C
Feels 47°F8°C
0.07 in1.9 mm· 15%58%DrizzleSSE 9 mph15 km/h
WednesdaySep 2369°F20°C51°F11°C0.1 in2.5 mm· 21%56%DrizzleSSE 10 mph16 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 43.5437°N, 96.7280°W·Elevation: 448m·Timezone: America/Chicago·Population: 171,544