Sioux City, Iowa Weather Forecast
Today in Sioux City: mostly sunny with a high near 85°F and a low around 67°F. Rain chance 1%. Best chance of rain is Thursday at 57%. Cooling trend: highs fall from 85°F today to 66°F by Wednesday.
Forecast updated 9:05 PM CDT, Oct 11
Active Weather Alerts
7-Day Forecast for Sioux City
Today 10/11
85°/67°
1%
Mon 10/12
85°/63°
3%
Tue 10/13
70°/53°
5%
Wed 10/14
66°/52°
16%
Thu 10/15
61°/53°
57%
Fri 10/16
56°/43°
4%
Sat 10/17
59°/37°
1%
Next 24 Hours
| Now | 11 PM | Mon12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | |  | | | | | | |  | | | | | | | | | | | | | | |
| Temp | 73° | 72° | 71° | 70° | 70° | 70° | 69° | 68° | 68° | 68° | 68° | 70° | 74° | 77° | 80° | 83° | 84° | 85° | 84° | 82° | 79° | 75° | 71° | 68° |
| Rain | 1% | 1% | 1% | 1% | 1% | 2% | 2% | 2% | 2% | 2% | 3% | 3% | 3% | 3% | 3% | 3% | 2% | 1% | 1% | 0% | 1% | 1% | 1% | 1% |
| Wind | S 7 | S 6 | S 6 | S 5 | S 5 | S 5 | S 5 | SSE 5 | SSE 6 | S 6 | S 7 | S 8 | S 8 | SSW 9 | SW 9 | WSW 10 | WSW 11 | W 11 | W 12 | WNW 13 | WNW 13 | NW 11 | NW 11 | NNW 12 |
Growing Conditions
Growing degree days
3,611
since Apr 1, base 50°F
Rain, last 30 days
1.33 in
model analysis
Rain, year to date
22.38 in
since Jan 1
2-inch soil temperature
71°F
yesterday, daily average
Reference ET, last 7 days
1.14 in
FAO-56 grass reference
Through Oct 10. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Sioux City →
Current Stats & Observations
NWS Forecast
About Sioux City Weather
Sioux City sits at about 1,102 feet above sea level in Woodbury County, Iowa. About 106,455 people live in the Sioux City area. Official forecasts and warnings for the area come from the National Weather Service FSD office, and the nearest NEXRAD radar site is KFSD. The city is in USDA plant hardiness zone 5a, where the coldest winter night typically falls between -20 to -15°F. Over the past ten years the last spring freeze has come around Apr 21 and the first fall freeze around Oct 27.
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