August weather in South Sioux City, NE
The average temperature in South Sioux City in August is 72.0°F (60.9°F–83.0°F). Average precipitation: 3.93 inches.
August is a summer month in South Sioux City, and is warmer than the annual average of 48°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Daylight averages about 13h 44m. For travel, August is a comfortable month to visit.
Avg High
83.0°F
Avg Low
60.9°F
Precipitation
3.93 in
Daylight
13h 44m
August records in South Sioux City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2012) | 53.1°F (2014) | 0.13 in (2023) |
| August 2 | 100.0°F (2011) | 54.0°F (2018) | 0.56 in (2016) |
| August 3 | 102.0°F (2022) | 53.1°F (2018) | 0.24 in (2013) |
| August 4 | 98.1°F (2012) | 50.0°F (2017) | 0.50 in (2018) |
| August 5 | 88.0°F (2019) | 50.0°F (2017) | 0.41 in (2025) |
| August 6 | 93.9°F (2022) | 55.9°F (2012) | 1.20 in (2025) |
| August 7 | 96.1°F (2012) | 57.9°F (2024) | 2.50 in (2014) |
| August 8 | 95.0°F (2012) | 53.1°F (2017) | 0.66 in (2014) |
| August 9 | 89.1°F (2025) | 50.0°F (2024) | 0.95 in (2023) |
| August 10 | 91.9°F (2021) | 48.9°F (2024) | 0.13 in (2025) |
| August 11 | 96.1°F (2022) | 50.0°F (2024) | 0.45 in (2020) |
| August 12 | 99.0°F (2022) | 50.0°F (2017) | 1.70 in (2016) |
| August 13 | 95.0°F (2022) | 53.1°F (2014) | 0.25 in (2017) |
| August 14 | 90.0°F (2018) | 54.0°F (2013) | 0.70 in (2024) |
| August 15 | 89.1°F (2015) | 53.1°F (2021) | 1.01 in (2024) |
| August 16 | 91.0°F (2012) | 52.0°F (2023) | 1.93 in (2022) |
| August 17 | 95.0°F (2025) | 48.0°F (2012) | 1.90 in (2017) |
| August 18 | 91.9°F (2025) | 45.0°F (2012) | 1.01 in (2015) |
| August 19 | 91.9°F (2016) | 45.0°F (2012) | 2.70 in (2015) |
| August 20 | 96.1°F (2023) | 45.0°F (2012) | 1.80 in (2014) |
| August 21 | 90.0°F (2023) | 51.1°F (2015) | 0.20 in (2017) |
| August 22 | 97.0°F (2023) | 51.1°F (2012) | 1.40 in (2017) |
| August 23 | 100.9°F (2023) | 51.1°F (2016) | 1.59 in (2014) |
| August 24 | 102.0°F (2023) | 46.0°F (2025) | 2.25 in (2016) |
| August 25 | 98.1°F (2023) | 45.0°F (2015) | 1.09 in (2017) |
| August 26 | 96.1°F (2020) | 45.0°F (2015) | 1.95 in (2017) |
| August 27 | 98.1°F (2020) | 53.1°F (2016) | 1.12 in (2021) |
| August 28 | 93.9°F (2020) | 52.0°F (2019) | 1.97 in (2015) |
| August 29 | 96.1°F (2012) | 48.9°F (2018) | 0.34 in (2021) |
| August 30 | 100.9°F (2012) | 48.9°F (2018) | 0.39 in (2024) |
| August 31 | 102.0°F (2012) | 51.1°F (2017) | 1.35 in (2021) |