Measurements:
°C
°F
Sioux City
48°F
S 6 mph
Feels like: 44°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 22.5 °F
February 29.3 °F
December 30.9 °F
The most rainy months:
May 3 days
June 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 +44
Hawaii +76
Honolulu +76
Houston +78
Las Vegas +96
Los Angeles +100
Maui +70
Miami +80
Miami Beach +82
New York +42
San Diego +94
San Francisco +74
Sarasota +76
Tampa +82
Washington +60
24 Hours Weather Forecast
Sioux City
Local time: 17:21
13 mar, friday
1800 48°F
S
6 mph
2100 38°F
SW
6 mph
14 mar, saturday
0000 34°F
W
9 mph
0300 34°F
W
9 mph
0600 30°F
W
12 mph
0900 32°F
W
15 mph
1200 42°F
NW
18 mph
1500 50°F
NW
16 mph