Measurements:
°C
°F
Sioux City
12°F
N 7 mph
Feels like: 0°F
Precip: 0%
World Resorts USA Sioux City Weather August Weather in Sioux City

Sioux City Weather: August

Average Day Temperature: 88.2°F
Average Night Temperature: 68.1°F
Number of Sunny Days: 16 days
Sunshine Hours: 13.2 - 14.5 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.6 in

Air Temperature in August, °F

Select Year: 2025 2024 2023

The highest day temperature in August 2025 was 102°F. The lowest night temperature was 42°F. The average values for day and night temperatures during August were 85.7°F и 64.3°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Sioux City is 0.6 in.

Wind Speed in August, mph

The average wind speed in August is 9.2 mph. It makes August one of the most windless months of the year for Sioux City.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sioux City in August is 9.4 hours.

Best Time to Visit Sioux City
The most sunny months:
October 19 days
September 19 days
August 16 days
The most warm months:
August 88.2 °F
July 86.9 °F
June 83.5 °F
The most cold months:
January 21.9 °F
February 26.9 °F
December 31.3 °F
The most rainy months:
June 3 days
May 3 days
April 2 days
The most windy months:
April 12 mph
March 11 mph
October 11 mph

Sioux City on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Sioux City
Local time: 02:07
05 dec, friday
0300 12°F
N
7 mph
0600 10°F
NE
4 mph
0900 14°F
N
2 mph
1200 30°F
NE
5 mph
1500 36°F
SE
12 mph
1800 34°F
SE
16 mph
2100 32°F
SE
17 mph
06 dec, saturday
0000 28°F
SE
7 mph