Sioux City, Iowa, United States of America: What to pack, what to wear, and when to go [2021]

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Traveling to Sioux City, Iowa, United States of America? If you're planning to go to Sioux City, below is some important information about when to go, what to wear, and what to pack.

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When to go to Sioux City, Iowa, United States of America

Based on the climate and weather in Sioux City, the best time to go is August. See below for details.

Important esssentials for Sioux City, Iowa, United States of America

Here are some general tips on what to wear in Sioux City, as well as several items to remember to pack when traveling there.

What to wear/what to pack for Sioux City, Iowa, United States of America by month

January

January in Sioux City is freezing. The average overnight temperatures in the area are in the low 10s F (10+ below zero C), with a few days below 0 F (10+ below zero C). It tends to rain about a third of the time.

It also snows occasionally. But the colder weather doesn't bring low humidity, which is in the 60% to 70% range on average.

What to wear/what to pack:

February

If you are traveling to Sioux City in February, you will notice that it can be extremely cold. Expect it to rain about a third of the time and snow occasionally.

Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

March

March in Sioux City is cold. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the high 30s F (single digits C) to high 40s F (single digits C), although night temperatures can dip into the low 20s F (single digits below 0 C).

What to wear/what to pack:

April

April in Sioux City can be chilly and somewhat rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 40s F (single digits C) to low 60s F (high 10s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

May

If you go to Sioux City in May, you will notice that it is warm and somewhat rainy. Expect it to rain regularly. Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

June

If you vacation in Sioux City during June, you are likely to notice that it is pretty consistently hot and somewhat rainy. Temperatures tend to hover around the low 80s F (high 20s C) during the day, while at night they can dip into the high 50s F (mid 10s C).

Humidity is generally around 50 during the day. In terms of precipitation, you can expect it to rain regularly.

What to wear/what to pack:

July

July in Sioux City can be sweltering. The rain can amount to several inches/centimeters. During this time, temperatures average in the 80s F (low 20s C), although night temperatures can dip into the low 60s F (mid 10s C).

What to wear/what to pack:

August

If you vacation in Sioux City during August, you are likely to notice that it is hot. Temperatures tend to hover around the low 80s F (high 20s C) during the day, while at night they can dip into the low 60s F (mid 10s C).

Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

September

September in Sioux City is a perfect temperature. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (high 10s C) to 70s F (mid 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

October

If you visit Sioux City during October, you are likely to notice that it is crisp. Temperatures tend to hover around the low 60s F (high 10s C) during the day, while at night they can dip into the high 30s F (single digits C).

Humidity is generally between 40 and 50% during the day. In terms of precipitation, you can expect it to rain occasionally.

What to wear/what to pack:

November

November in Sioux City can be brisk. The average overnight temperatures in the area are in the 20s F (single digits below 0 C). It tends to rain once in a while.

It also snows sometimes. But the colder weather doesn't bring low humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

December

Traveling to Sioux City in December, you will notice that it is freezing. Expect it to rain regularly and snow occasionally. Daytime temperatures are in the low 30s F (single digits C).

What to wear/what to pack:

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