National Weather Service Forecast for: South Sioux City NE
Issued by: National Weather Service Sioux Falls, SD
Updated: 10:31 pm CDT Jun 22, 2025
 
Overnight

Overnight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.
Chance
T-storms
 Monday

Monday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 82. North northwest wind around 10 mph.
Chance
T-storms
 Monday
Night
Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. East northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Showers
 Tuesday

Tuesday: Showers and possibly a thunderstorm. High near 81. East wind 5 to 10 mph. Chance of precipitation is 80%.
Showers

 Tuesday
Night
Tuesday Night: Showers and possibly a thunderstorm. Low around 67. East southeast wind around 5 mph. Chance of precipitation is 90%.
Showers

 Wednesday

Wednesday: Showers likely and possibly a thunderstorm. Cloudy, then gradually becoming mostly sunny, with a high near 89. South southwest wind 5 to 10 mph. Chance of precipitation is 70%.
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.
T-storms

 Thursday

Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Chance
T-storms
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 63.
Partly Cloudy
Lo 68 °F Hi 82 °F Lo 63 °F Hi 81 °F Lo 67 °F Hi 89 °F Lo 66 °F Hi 86 °F Lo 63 °F

Hazardous Weather Outlook
 

Overnight
 
 A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
 
 A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 82. North northwest wind around 10 mph.
Monday Night
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. East northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
 
 Showers and possibly a thunderstorm. High near 81. East wind 5 to 10 mph. Chance of precipitation is 80%.
Tuesday Night
 
 Showers and possibly a thunderstorm. Low around 67. East southeast wind around 5 mph. Chance of precipitation is 90%.
Wednesday
 
 Showers likely and possibly a thunderstorm. Cloudy, then gradually becoming mostly sunny, with a high near 89. South southwest wind 5 to 10 mph. Chance of precipitation is 70%.
Wednesday Night
 
 Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.
Thursday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Thursday Night
 
 Partly cloudy, with a low around 63.
Friday
 
 Mostly sunny, with a high near 89.
Friday Night
 
 Mostly clear, with a low around 67.
Saturday
 
 Mostly sunny, with a high near 92.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Sunday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for South Sioux City NE.