Live Weather & Forecast

Weather in North Sioux City

South Dakota, United States · Real-time conditions & 3-day outlook

Flag of United States
Sunny
18°C
Feels like 18°C
64°F / Feels 64°F
Sunny
North Sioux City, South Dakota
🌞 Daytime
Updated: 2026-04-16 11:15
💧
Humidity
54%
💨
Wind
25.6 km/h S
🌬️
Wind Gust
29.4 km/h
🌡️
Pressure
1008 mb
👁️
Visibility
16 km
☀️
UV Index
4.2 (Moderate)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
9°C
🌐
Wind Degree
172°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
138.9 μg/m³
NO₂
2 μg/m³
O₃
126 μg/m³
SO₂
1.3 μg/m³
PM 2.5
4.6 μg/m³
PM 10
8 μg/m³

Weather Alerts 5

Met · Severe · Expected
Red Flag Warning issued April 15 at 9:27PM CDT until April 16 at 8:00PM CDT by NWS Sioux Falls SD

* AFFECTED AREA...In Nebraska, Dixon and Dakota. In South Dakota, Beadle, Kingsbury, Brookings, Gregory, Jerauld, Sanborn, Miner, Lake, Moody, Brule, Aurora, Davison, Hanson, McCook, Minnehaha, Charles Mix, Douglas, Hutchinson, Turner, Lincoln, Bon Homme, Yankton, Clay and Union. * WINDS...Southwest 15 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...An...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Met · Severe · Expected
Red Flag Warning issued April 16 at 3:53AM CDT until April 16 at 8:00PM CDT by NWS Sioux Falls SD

* AFFECTED AREA...In Iowa, Lyon, Sioux, Plymouth and Woodbury. In Minnesota, Lincoln, Lyon, Murray, Nobles, Pipestone and Rock. In Nebraska, Dixon and Dakota. In South Dakota, Beadle, Kingsbury, Brookings, Gregory, Jerauld, Sanborn, Miner, Lake, Moody, Brule, Aurora, Davison, Hanson, McCook, Minnehaha, Charles Mix, Douglas, Hutchinson, Turner, Lincoln, Bon Homme, Yankton, Clay and Union. * WINDS....

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Met · Severe · Expected
Red Flag Warning issued April 15 at 9:27PM CDT until April 16 at 8:00PM CDT by NWS Sioux Falls SD

The National Weather Service in Sioux Falls has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 8 PM CDT Thursday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Iowa, Lyon, Sioux, Plymouth and Woodbury. In Minnesota, Lincoln, Lyon, Murray, Nobles, Pipestone and Rock. * WINDS...South 15 to 20 mph with gusts up to 30 mph. * RELAT...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Met · Severe · Expected
Red Flag Warning issued April 16 at 2:36AM CDT until April 16 at 8:00PM CDT by NWS Omaha/Valley NE

* AFFECTED AREA...Knox, Cedar, Thurston, Antelope, Pierce, Wayne, Boone, Madison, Stanton, Cuming, Burt, Platte, Colfax, Dodge, Butler, and Seward Counties. * TIMING...From noon today to 8 PM CDT this evening. * WINDS...Southwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is no...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior.

Met · Severe · Expected
Red Flag Warning issued April 16 at 2:36AM CDT until April 16 at 8:00PM CDT by NWS Omaha/Valley NE

The National Weather Service in Omaha/Valley has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon today to 8 PM CDT this evening. * AFFECTED AREA...Monona County. * TIMING...From noon today to 8 PM CDT this evening. * WINDS...South 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Any fires that develop will...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior.

Today's Hourly Forecast

24-hour breakdown for North Sioux City, South Dakota

12 AM
Clear
10°
Clear
💧 70% 💨 3.6 km/h
1 AM
Clear
Clear
💧 73% 💨 7.6 km/h
2 AM
Clear
Clear
💧 80% 💨 9.4 km/h
3 AM
Clear
Clear
💧 81% 💨 11.5 km/h
4 AM
Clear
Clear
💧 84% 💨 11.5 km/h
5 AM
Clear
Clear
💧 87% 💨 11.2 km/h
6 AM
Clear
Clear
💧 83% 💨 13 km/h
7 AM
Sunny
Sunny
💧 77% 💨 13.3 km/h
8 AM
Sunny
Sunny
💧 83% 💨 16.6 km/h
9 AM
Sunny
12°
Sunny
💧 68% 💨 21.6 km/h
10 AM
Sunny
16°
Sunny
💧 59% 💨 24.8 km/h
11 AM
Sunny
18°
Sunny
💧 54% 💨 25.6 km/h
12 PM
Sunny
23°
Sunny
💧 40% 💨 24.5 km/h
1 PM
Sunny
26°
Sunny
💧 30% 💨 24.1 km/h
2 PM
Sunny
29°
Sunny
💧 25% 💨 23.4 km/h
3 PM
Sunny
30°
Sunny
💧 17% 💨 22 km/h
4 PM
Sunny
31°
Sunny
💧 13% 💨 22.7 km/h
5 PM
Sunny
31°
Sunny
💧 12% 💨 28.4 km/h
6 PM
Sunny
29°
Sunny
💧 12% 💨 24.8 km/h
7 PM
Sunny
27°
Sunny
💧 15% 💨 23 km/h
8 PM
Sunny
24°
Sunny
💧 20% 💨 24.5 km/h
9 PM
Clear
21°
Clear
💧 24% 💨 24.5 km/h
10 PM
Clear
20°
Clear
💧 32% 💨 27 km/h
11 PM
Clear
19°
Clear
💧 39% 💨 28.4 km/h

3-Day Forecast

Daily overview for North Sioux City, South Dakota

Today
Sunny
Sunny
32° /
🌧️ 0% chance of rain
💧 Avg. humidity: 49%
💨 Max wind: 28.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:43 AM
🌇 Sunset: 08:09 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
Patchy rain nearby
17° /
🌧️ 62% chance of rain
💧 Avg. humidity: 69%
💨 Max wind: 43.9 km/h
🌧️ Total precip: 1.29 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:41 AM
🌇 Sunset: 08:10 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Sunny
Sunny
14° / -0°
🌧️ 0% chance of rain
💧 Avg. humidity: 40%
💨 Max wind: 36 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:40 AM
🌇 Sunset: 08:12 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit

Best Time to Visit North Sioux City

Plan your trip to North Sioux City, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to North Sioux City 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in North Sioux City?
Current conditions in North Sioux City: Sunny, temperature 18°C, humidity 54%.
What is the best time to visit North Sioux City?
The best time to visit North Sioux City is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in North Sioux City?
North Sioux City is located at approximately 42.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in North Sioux City?
The wettest period in North Sioux City is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to North Sioux City?
For visits to North Sioux City during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is North Sioux City in?
North Sioux City is located in United States, in the state of South Dakota.
What are the public holidays in North Sioux City in 2026?
View the 2026 public holidays for North Sioux City on our Holidays page.
What are the GPS coordinates used for the weather forecast in North Sioux City?
The weather forecast for North Sioux City uses coordinates 42.5247, -96.4872.