Naperville, Illinois, United States of America: What to pack, what to wear, and when to go [2021]

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Traveling to Naperville, Illinois, United States of America? If you're planning to go to Naperville, we have some important information about when to go, what to wear, and what to pack.

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When to go to Naperville, Illinois, United States of America

Based on the climate and weather in Naperville, the best time to go is September. See below for details.

Important esssentials for Naperville, Illinois, United States of America

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

What to wear/what to pack for Naperville, Illinois, United States of America by month

January

January in Naperville is frigid. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the low 30s F (single digits below 0 C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

February

February in Naperville is very cold. The average overnight temperatures in the area are in the high 10s F (single digits below 0 C), with a few days below 0 F (10+ below zero C).

It tends to rain about a third of the time.

What to wear/what to pack:

March

March in Naperville can be brisk and somewhat rainy. The average overnight temperatures in the area are in the high 20s F (single digits below 0 C). It tends to rain regularly.

What to wear/what to pack:

April

Traveling to Naperville in April, you will notice that it is cool and somewhat rainy. Expect it to rain 5-10 days this month. Daytime temperatures are in the low 60s F (high 10s C).

What to wear/what to pack:

May

If you are traveling to Naperville in May, you will notice that it is warm and somewhat rainy. Expect it to rain a bit less than half of the time.

Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

June

In June, Naperville is hot and somewhat rainy. Temperatures routinely are in the low 80s F (high 20s C) and regularly jump into the low 90s F (low 30s C) range.

At night, lows are in the high 50s F (mid 10s C). This is also a rainy time for Naperville, with several of the days of the month having rain.

What to wear/what to pack:

July

July in Naperville is really hot. The rain can amount to several inches/centimeters.

During this time, temperatures average in the 70s F (low 20s C) to 80s F (low 30s C), although night temperatures can dip into the low 60s F (mid 10s C).

What to wear/what to pack:

August

August here is hot. Temperatures average in the 80s F (high 20s C) during the day. It rains about a third of the time.

What to wear/what to pack:

September

If you go to Naperville in September, you will notice that it is warm. Expect it to rain about a third of the time. Daytime temperatures are in the high 70s F (mid 20s C).

What to wear/what to pack:

October

October here is balmy. Temperatures average in the 60s F (high 10s C) during the day. It rains regularly.

What to wear/what to pack:

November

If you visit Naperville during November, you may notice that it is cold. Temperatures tend to hover around the high 40s F (single digits C) during the day, while at night they can dip into the low 30s F (single digits below 0 C).

In terms of precipitation, you can expect it to rain about a third of the time.

What to wear/what to pack:

December

If you go to Naperville in December, you will notice that it is very cold. Expect it to rain a bit less than half of the time. Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

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