Mild
Average highs are around 23°C, so days are mild rather than hot.
May verdict
Good for holiday weather
Average highs are around 23°C, so days are mild rather than hot. Sunshine averages 8.7h per day, so bright days are a strong part of the month. Rainfall averages 93mm, so some wet days are possible.
Monthly averages
Temp
23°C
Rain
93mm
Sun
8.7h
Weather score
57
Good
Mild
Average highs are around 23°C, so days are mild rather than hot.
Showers
Rainfall averages 93mm, so some wet days are possible.
Bright
Sunshine averages 8.7h per day, so bright days are a strong part of the month.
Map
Compare South Sioux City, Nebraska, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
May23°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
May93mm average rain
May is one of South Sioux City's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to February and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May8.7 hours average sun
May is brighter than South Sioux City's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
May57 weather score
May sits close to South Sioux City's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.