Sioux City, Iowa Weather Forecast
Today in Sioux City: mostly sunny with a high near 78°F and a low around 60°F. Rain chance 24%. Best chance of rain is Monday at 66%. Cooling trend: highs fall from 78°F today to 57°F by Monday.
Forecast updated 9:05 PM CDT, Oct 23
Active Weather Alerts
7-Day Forecast for Sioux City
Today 10/23
24%
78°60°
Sat 10/24
23%
69°53°
Sun 10/25
48%
63°50°
Mon 10/26
66%
57°48°
Tue 10/27
66%
60°48°
Wed 10/28
31%
65°49°
Thu 10/29
10%
61°44°
Next 24 Hours
| Now | 11 PM | Sat12 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 | 69° | 67° | 66° | 66° | 65° | 65° | 64° | 63° | 63° | 62° | 62° | 63° | 66° | 68° | 69° | 69° | 68° | 66° | 65° | 64° | 62° | 59° | 57° | 56° |
| Rain | 1% | 1% | 2% | 2% | 2% | 2% | 2% | 2% | 5% | 4% | 4% | 4% | 6% | 4% | 5% | 6% | 4% | 3% | 7% | 10% | 23% | 22% | 23% | 16% |
| Wind | SSE 16 | S 16 | S 15 | S 14 | S 13 | S 13 | S 13 | S 12 | S 11 | S 10 | S 10 | S 10 | S 9 | SSW 10 | W 11 | WNW 11 | NW 12 | NW 12 | NW 12 | NNW 11 | NNW 11 | NNW 9 | NNW 8 | N 7 |
Growing Conditions
Growing degree days
3,729
since Apr 1, base 50°F
Rain, last 30 days
1.39 in
model analysis
Rain, year to date
22.60 in
since Jan 1
2-inch soil temperature
60°F
yesterday, daily average
Reference ET, last 7 days
0.81 in
FAO-56 grass reference
Through Oct 22. 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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