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Several Rounds of Severe Weather Possible through Tuesday

Hazardous Weather Conditions

Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

A Few Clouds

83°F

28°C

Humidity	49%
Wind Speed	Calm
Barometer	29.76 in (1007.2 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	84°F (29°C)
Last update	20 May 2:52 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Sioux City IA

Flood Watch May 21, 01:00am until May 21, 07:00pm

Click here for hazard details and duration

Flood Watch

This Afternoon
High: 81 °F
Mostly Sunny
Tonight
Low: 62 °F
Chance
T-storms then
T-storms
Tuesday
High: 68 °F
Heavy Rain
and Breezy
Tuesday Night
Low: 48 °F
Chance
Showers and
Breezy then
Partly Cloudy
Wednesday
High: 72 °F
Sunny
Wednesday Night
Low: 49 °F
Mostly Clear
Thursday
High: 78 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Chance
T-storms then
Showers
Likely
Friday
High: 71 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 81. North wind 5 to 10 mph.

Tonight

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 62. East northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Tuesday

Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could produce heavy rainfall. High near 68. Breezy, with a northeast wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Tuesday Night

A 30 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 48. Breezy, with a west northwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph.

Wednesday

Sunny, with a high near 72. West wind around 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 49. West wind around 5 mph becoming south after midnight.

Thursday

Mostly sunny, with a high near 78.

Thursday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 55. Chance of precipitation is 60%.

Friday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 71. Chance of precipitation is 60%.

Friday Night

A 30 percent chance of showers. Partly cloudy, with a low around 49.

Saturday

Mostly sunny, with a high near 72.

Saturday Night

A 30 percent chance of showers. Partly cloudy, with a low around 52.

Sunday

A 40 percent chance of showers. Partly sunny, with a high near 75.