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Current weather in Sioux Falls is overcast clouds.

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Weather data for Sioux Falls is updated regularly with the latest available observations and forecasts.

Now · 1:12 PM

Sioux Falls Weather & Hourly Forecast

United States · South Dakota · 57104

78°F

Overcast

Feels like: 75°F

💧 Humidity 75% 🌡 Pressure 29.91 inHg 💨 Wind 17 mph 👁 Visibility 7.0 mi ☁ Clouds 100% ☀️ UV index 6.8 · High 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Sioux Falls

Today

2:00 PM

Overcast

80° 💧 0.001 in 💨 16 mph H 71%29.88 inHg

5:00 PM

Partly cloudy

82° 💧 None 💨 15 mph H 70%29.80 inHg

8:00 PM

Partly cloudy night

77° 💧 0.143 in 💨 14 mph H 83%29.83 inHg

11:00 PM

Light thunderstorms

74° 💧 0.067 in 💨 12 mph H 92%29.85 inHg

Tomorrow

2:00 AM

Overcast night

76° 💧 0.011 in 💨 13 mph H 87%29.85 inHg

5:00 AM

Overcast night

74° 💧 None 💨 13 mph H 86%29.85 inHg

8:00 AM

Light thunderstorms

73° 💧 0.290 in 💨 10 mph H 87%29.88 inHg

11:00 AM

Mostly cloudy

80° 💧 0.002 in 💨 9 mph H 72%29.88 inHg

2:00 PM

Overcast

84° 💧 None 💨 6 mph H 64%29.88 inHg

5:00 PM

Overcast

85° 💧 0.002 in 💨 4 mph H 63%29.88 inHg

8:00 PM

Clear night

76° 💧 None 💨 7 mph H 71%29.91 inHg

11:00 PM

Mostly clear night

69° 💧 None 💨 3 mph H 72%29.97 inHg

Wednesday

2:00 AM

Clear night

64° 💧 None 💨 3 mph H 81%29.97 inHg

5:00 AM

Clear night

63° 💧 None 💨 5 mph H 76%30.00 inHg

8:00 AM

Sunny

63° 💧 None 💨 6 mph H 76%30.06 inHg

11:00 AM

Mostly sunny

74° 💧 None 💨 2 mph H 61%30.09 inHg

Today

2:00 PM

Overcast

80° 💧 0.001 in 💨 16 mph H 71%29.88 inHg

3:00 PM

Mostly cloudy

80° 💧 0.000 in 💨 17 mph H 70%29.85 inHg

4:00 PM

Mostly cloudy

82° 💧 None 💨 16 mph H 68%29.83 inHg

5:00 PM

Partly cloudy

82° 💧 None 💨 15 mph H 70%29.80 inHg

6:00 PM

Partly cloudy

81° 💧 None 💨 16 mph H 73%29.80 inHg

7:00 PM

Mostly cloudy

79° 💧 None 💨 15 mph H 77%29.80 inHg

8:00 PM

Partly cloudy night

77° 💧 None 💨 14 mph H 83%29.83 inHg

9:00 PM

Strong thunderstorm

77° 💧 0.001 in 💨 13 mph H 85%29.85 inHg

10:00 PM

Thunderstorms

75° 💧 0.143 in 💨 10 mph H 90%29.88 inHg

11:00 PM

Light thunderstorms

74° 💧 0.057 in 💨 12 mph H 92%29.85 inHg

Tomorrow

12:00 AM

Light rain

75° 💧 0.010 in 💨 13 mph H 91%29.85 inHg

1:00 AM

Mostly cloudy night

75° 💧 None 💨 13 mph H 89%29.83 inHg

2:00 AM

Overcast night

76° 💧 None 💨 13 mph H 87%29.85 inHg

3:00 AM

Light rain

76° 💧 0.009 in 💨 15 mph H 87%29.85 inHg

4:00 AM

Overcast night

74° 💧 0.002 in 💨 14 mph H 87%29.85 inHg

5:00 AM

Overcast night

74° 💧 None 💨 13 mph H 86%29.85 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 12 mph H 85%29.83 inHg

7:00 AM

Overcast

73° 💧 None 💨 12 mph H 85%29.85 inHg

8:00 AM

Light thunderstorms

73° 💧 0.036 in 💨 10 mph H 87%29.88 inHg

9:00 AM

Thunderstorms

74° 💧 0.238 in 💨 4 mph H 90%29.91 inHg

10:00 AM

Light thunderstorms

77° 💧 0.016 in 💨 6 mph H 83%29.88 inHg

11:00 AM

Mostly cloudy

80° 💧 0.001 in 💨 9 mph H 72%29.88 inHg

12:00 PM

Mostly sunny

82° 💧 0.001 in 💨 7 mph H 68%29.88 inHg

1:00 PM

Overcast

84° 💧 0.000 in 💨 8 mph H 64%29.88 inHg

2:00 PM

Overcast

84° 💧 None 💨 6 mph H 64%29.88 inHg

3:00 PM

Overcast

84° 💧 None 💨 5 mph H 65%29.88 inHg

4:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 63%29.88 inHg

5:00 PM

Overcast

85° 💧 None 💨 4 mph H 63%29.88 inHg

6:00 PM

Partly cloudy

84° 💧 0.001 in 💨 4 mph H 68%29.88 inHg

7:00 PM

Mostly sunny

80° 💧 0.001 in 💨 9 mph H 72%29.88 inHg

8:00 PM

Clear night

76° 💧 None 💨 7 mph H 71%29.91 inHg

9:00 PM

Partly cloudy night

73° 💧 None 💨 5 mph H 71%29.94 inHg

10:00 PM

Partly cloudy night

72° 💧 None 💨 5 mph H 67%29.94 inHg

11:00 PM

Mostly clear night

69° 💧 None 💨 3 mph H 72%29.97 inHg

Wednesday

12:00 AM

Partly cloudy night

67° 💧 None 💨 2 mph H 76%29.97 inHg

1:00 AM

Clear night

66° 💧 None 💨 2 mph H 78%29.97 inHg

2:00 AM

Clear night

64° 💧 None 💨 3 mph H 81%29.97 inHg

3:00 AM

Clear night

62° 💧 None 💨 3 mph H 84%29.94 inHg

4:00 AM

Clear night

62° 💧 None 💨 2 mph H 81%29.97 inHg

5:00 AM

Clear night

63° 💧 None 💨 5 mph H 76%30.00 inHg

6:00 AM

Partly cloudy night

61° 💧 None 💨 5 mph H 77%30.03 inHg

7:00 AM

Sunny

62° 💧 None 💨 7 mph H 76%30.06 inHg

8:00 AM

Sunny

63° 💧 None 💨 6 mph H 76%30.06 inHg

9:00 AM

Sunny

66° 💧 None 💨 5 mph H 74%30.06 inHg

10:00 AM

Sunny

70° 💧 None 💨 1 mph H 69%30.06 inHg

11:00 AM

Mostly sunny

74° 💧 None 💨 2 mph H 61%30.09 inHg

12:00 PM

Sunny

77° 💧 None 💨 7 mph H 49%30.09 inHg

1:00 PM

Sunny

77° 💧 None 💨 11 mph H 47%30.09 inHg

2:00 PM

Sunny

77° 💧 None 💨 11 mph H 46%30.06 inHg

3:00 PM

Sunny

78° 💧 None 💨 10 mph H 45%30.06 inHg

4:00 PM

Sunny

77° 💧 None 💨 11 mph H 43%30.03 inHg

5:00 PM

Sunny

76° 💧 None 💨 11 mph H 44%30.03 inHg

6:00 PM

Sunny

75° 💧 None 💨 8 mph H 51%30.03 inHg

7:00 PM

Sunny

72° 💧 None 💨 4 mph H 62%30.03 inHg

8:00 PM

Clear night

67° 💧 None 💨 3 mph H 73%30.03 inHg

9:00 PM

Mostly cloudy night

66° 💧 None 💨 1 mph H 75%30.03 inHg

10:00 PM

Mostly clear night

64° 💧 None 💨 2 mph H 79%30.03 inHg

11:00 PM

Clear night

63° 💧 None 💨 4 mph H 81%30.06 inHg

Thursday

12:00 AM

Clear night

62° 💧 None 💨 5 mph H 79%30.06 inHg

1:00 AM

Mostly clear night

61° 💧 None 💨 5 mph H 78%30.06 inHg

2:00 AM

Clear night

61° 💧 None 💨 5 mph H 77%30.06 inHg

3:00 AM

Clear night

59° 💧 None 💨 5 mph H 79%30.03 inHg

4:00 AM

Clear night

58° 💧 None 💨 3 mph H 84%30.03 inHg

5:00 AM

Clear night

57° 💧 None 💨 1 mph H 84%30.03 inHg

6:00 AM

Clear night

56° 💧 None 💨 2 mph H 86%30.03 inHg

7:00 AM

Sunny

55° 💧 None 💨 4 mph H 89%30.06 inHg

10:00 AM

Sunny

71° 💧 None 💨 4 mph H 54%30.03 inHg

1:00 PM

Sunny

81° 💧 None 💨 9 mph H 30%30.00 inHg

4:00 PM

Sunny

83° 💧 None 💨 11 mph H 30%29.91 inHg

7:00 PM

Sunny

79° 💧 None 💨 11 mph H 38%29.88 inHg

10:00 PM

Clear night

70° 💧 None 💨 11 mph H 61%29.88 inHg

Friday

1:00 AM

Clear night

68° 💧 None 💨 11 mph H 66%29.85 inHg

4:00 AM

Clear night

67° 💧 None 💨 11 mph H 69%29.83 inHg

7:00 AM

Mostly clear night

66° 💧 None 💨 13 mph H 70%29.77 inHg

10:00 AM

Mostly sunny

74° 💧 None 💨 15 mph H 60%29.71 inHg

1:00 PM

Mostly cloudy

84° 💧 None 💨 20 mph H 54%29.62 inHg

4:00 PM

Partly cloudy

88° 💧 None 💨 22 mph H 45%29.56 inHg

7:00 PM

Light thunderstorms

84° 💧 None 💨 12 mph H 55%29.59 inHg

10:00 PM

Clear night

74° 💧 None 💨 12 mph H 60%29.77 inHg

Saturday

1:00 AM

Clear night

65° 💧 None 💨 9 mph H 53%29.88 inHg

4:00 AM

Clear night

60° 💧 None 💨 8 mph H 59%29.97 inHg

7:00 AM

Clear night

56° 💧 None 💨 6 mph H 66%30.03 inHg

10:00 AM

Mostly sunny

65° 💧 None 💨 9 mph H 44%30.09 inHg

1:00 PM

Sunny

73° 💧 None 💨 9 mph H 31%30.09 inHg

4:00 PM

Sunny

76° 💧 None 💨 8 mph H 26%30.06 inHg

7:00 PM

Sunny

73° 💧 None 💨 4 mph H 30%30.03 inHg

10:00 PM

Partly cloudy night

65° 💧 None 💨 3 mph H 49%30.06 inHg

Sunday

1:00 AM

Partly cloudy night

59° 💧 None 💨 3 mph H 60%30.09 inHg

7:00 AM

Mostly clear night

60° 💧 None 💨 4 mph H 57%30.09 inHg

1:00 PM

Overcast

58° 💧 None 💨 8 mph H 75%30.12 inHg

7:00 PM

Light rain

70° 💧 None 💨 14 mph H 45%30.09 inHg

Monday

1:00 AM

Overcast night

61° 💧 None 💨 12 mph H 80%30.03 inHg

7:00 AM

Overcast night

59° 💧 None 💨 14 mph H 87%29.94 inHg

1:00 PM

Light rain

62° 💧 None 💨 4 mph H 93%29.74 inHg

7:00 PM

Overcast

71° 💧 None 💨 16 mph H 79%29.71 inHg

Tuesday

1:00 AM

Clear night

68° 💧 None 💨 16 mph H 61%29.83 inHg

7:00 AM

Clear night

59° 💧 None 💨 17 mph H 61%30.00 inHg

1:00 PM

Sunny

52° 💧 None 💨 7 mph H 84%30.18 inHg

7:00 PM

Sunny

67° 💧 None 💨 9 mph H 51%30.24 inHg

Wednesday

1:00 AM

Clear night

66° 💧 None 💨 3 mph H 56%30.21 inHg

7:00 AM

Clear night

55° 💧 None 💨 4 mph H 78%30.30 inHg

1:00 PM

Sunny

52° 💧 None 💨 4 mph H 90%30.39 inHg

7:00 PM

Mostly sunny

72° 💧 None 💨 4 mph H 49%30.42 inHg

Thursday

1:00 AM

Overcast night

69° 💧 None 💨 6 mph H 57%30.39 inHg

7:00 AM

Overcast night

57° 💧 None 💨 7 mph H 76%30.47 inHg

1:00 PM

Overcast

55° 💧 None 💨 7 mph H 78%30.47 inHg

7:00 PM

Mostly cloudy

63° 💧 None 💨 6 mph H 58%30.47 inHg

Friday

1:00 AM

Mostly clear night

65° 💧 None 💨 4 mph H 65%30.36 inHg

7:00 AM

Partly cloudy night

55° 💧 None 💨 3 mph H 88%30.36 inHg

1:00 PM

Overcast

55° 💧 None 💨 4 mph H 92%30.33 inHg

7:00 PM

Partly cloudy

72° 💧 None 💨 2 mph H 52%30.30 inHg

Saturday

1:00 AM

Mostly clear night

70° 💧 None 💨 4 mph H 58%30.18 inHg

7:00 AM

Clear night

58° 💧 None 💨 2 mph H 82%30.21 inHg

1:00 PM

Sunny

53° 💧 None 💨 1 mph H 88%30.18 inHg

7:00 PM

Mostly sunny

75° 💧 None 💨 3 mph H 40%30.15 inHg

Sunday

1:00 AM

Clear night

73° 💧 None 💨 7 mph H 44%30.00 inHg

7:00 AM

Clear night

62° 💧 None 💨 8 mph H 67%30.00 inHg

1:00 PM

Overcast

59° 💧 None 💨 7 mph H 84%29.94 inHg

7:00 PM

Overcast

75° 💧 None 💨 7 mph H 58%29.88 inHg

Monday

1:00 AM

Light rain

66° 💧 None 💨 6 mph H 93%29.88 inHg

7:00 AM

Mostly clear night

63° 💧 None 💨 9 mph H 90%30.00 inHg

1:00 PM

Sunny

53° 💧 None 💨 8 mph H 87%30.09 inHg

7:00 PM

Sunny

68° 💧 None 💨 6 mph H 46%30.09 inHg

Tuesday

1:00 AM

Clear night

66° 💧 None 💨 4 mph H 47%30.00 inHg

In Sioux Falls and, more broadly, across the state of South Dakota: The rest of the day will bring mostly cloudy skies with hot temperatures ranging from 71 to 87 degrees Fahrenheit. There is a high chance of rain, with some areas expecting around 0.04 inches of accumulation, and the probability of precipitation reaching up to 95%. Winds from the south will be noticeable, with sustained speeds up to 19 mph and gusts reaching 32 mph. Be prepared for brief, scattered showers and gusty winds as the day progresses. Conditions will gradually cool off toward evening, but humidity may remain elevated. Outdoor activities should account for the possibility of rain and gusty winds, especially during late afternoon hours.

15-Day Weather Outlook for Sioux Falls

TomorrowTomorrow

Strong thunderstorm 85°/73° 💧 None 💨 15 mph

Wednesday, Sep 9Wed Sep 9

Mostly sunny 80°/61° 💧 None 💨 11 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 83°/55° 💧 None 💨 11 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 88°/66° 💧 None 💨 22 mph

Saturday, Sep 12Sat Sep 12

Light thunderstorms 84°/56° 💧 0.074 in 💨 12 mph

Sunday, Sep 13Sun Sep 13

Overcast 73°/58° 💧 0.006 in 💨 8 mph

Monday, Sep 14Mon Sep 14

Light rain 70°/59° 💧 0.471 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Overcast 71°/52° 💧 0.185 in 💨 17 mph

Wednesday, Sep 16Wed Sep 16

Sunny 67°/52° 💧 None 💨 9 mph

Thursday, Sep 17Thu Sep 17

Overcast 72°/55° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 65°/55° 💧 0.004 in 💨 6 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 72°/53° 💧 None 💨 4 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 75°/59° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Light rain 75°/53° 💧 0.091 in 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Sunny 68°/66° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sioux Falls

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sioux Falls

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 7,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 8,1µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 74,8µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Sioux Falls

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,8High 🙂Fair

Tomorrow UV 5,6Moderate 🙂Fair

Wednesday UV 6,3High 🙂Fair

Thursday UV 6,4High 🙂Fair

Friday UV 8,0Very high 🙂Fair

Saturday UV 7,0High —Unavailable

Sunday UV 7,0High —Unavailable

Hourly UV index today

2:00 PMUV 6,7 3:00 PMUV 5,4 4:00 PMUV 4,1 5:00 PMUV 2,2 6:00 PMUV 0,9 7:00 PMUV 0,2

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Sioux Falls

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SIOUX FALLS, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

49/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 59% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 31° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Sioux Falls were last refreshed today at 1:12 PM. The current forecast period extends through 09/09/2026 at 11:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.