Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4° N Lon: 96.38° W Elev: 1099 ft.

Fog/Mist

42°F

6°C

Humidity	96%
Wind Speed	SE 13 mph
Barometer	29.70 in (1006.5 mb)
Dewpoint	41°F (5°C)
Visibility	6.00 mi
Wind Chill	35°F (2°C)
Last update	27 Dec 9:52 am CST

More Information:

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

Detailed forecast for

Thurston County

Today

Patchy fog this morning. Cloudy. Highs in the mid 50s. South winds 5 to 10 mph.

Tonight

Cloudy. A chance of rain after midnight. Patchy fog after midnight. Windy with lows in the mid 20s. Southwest winds around 5 mph, increasing to northwest 25 to 30 mph with gusts up to 45 mph after midnight. Chance of rain 50 percent.

Sunday

Mostly cloudy. Snow likely with a slight chance of freezing rain in the morning, then a chance of snow in the afternoon. Areas of blowing snow in the morning, then patchy blowing snow in the afternoon. Snow accumulation around an inch possible. Ice accumulation around a trace. Windy and much cooler with highs in the upper 20s. Temperature falling to around 16 in the afternoon. Northwest winds 25 to 30 mph with gusts up to 50 mph. Chance of precipitation 70 percent. Wind chill values as low as 6 below in the afternoon.

Sunday Night

Partly cloudy. Patchy blowing snow. Windy and much colder with lows around 6 above. Northwest winds 25 to 30 mph with gusts up to 45 mph. Wind chill values as low as 16 below.

Monday

Sunny, windy with highs around 19. Northwest winds 20 to 30 mph with gusts up to 40 mph, diminishing to 15 to 20 mph with gusts up to 30 mph in the afternoon. Wind chill values as low as 17 below in the morning.

Monday Night

Mostly clear. Cold with lows around 10 above. Wind chill values as low as zero.

Tuesday

Mostly sunny. Not as cool with highs in the lower 40s.

Tuesday Night

Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the lower 20s.

Wednesday

Partly sunny. Highs in the upper 30s.

Wednesday Night

Mostly cloudy. Colder with lows around 10 above. Wind chill values as low as 5 below.

New Years Day

Mostly sunny. Much cooler with highs in the lower 20s. Wind chill values as low as 5 below.