Cool
Average highs are around 8°C, so pack for cooler days.
Weather Guide
Best months: July, August, June
Across the year, average daytime temperatures are around 15°C, sunshine averages 7.3h per day, and rainfall totals about 657mm.

Annual averages
Temp
15°C
Rain
657mm
Annual total
Sun
7.3h
Weather score
53
Mixed avg
Cool
Average highs are around 8°C, so pack for cooler days.
Drier
Rainfall averages 27mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 4.8h per day, so this is not one of the brighter months.
Map
Compare Sioux City, Iowa, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
November8°C average high
November is on the cooler side of Sioux City's year, useful if you prefer less intense daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
November27mm average rain
November sits on the drier side of Sioux City's year, which helps with sightseeing and transfers.
Driest monthsJanuary to February and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
November4.8 hours average sun
November is one of Sioux City's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
November37 weather score
November is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.