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

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

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

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

Important esssentials for DeKalb, Illinois, United States of America

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

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

January

January in DeKalb is beyond 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 once in a while. It also snows regularly.

What to wear/what to pack:

February

February in DeKalb is freezing. 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 snows sometimes.

What to wear/what to pack:

March

March in DeKalb is pretty cool. The average overnight temperatures in the area are in the high 20s F (single digits below 0 C). It tends to rain once in a while. It also snows sometimes.

What to wear/what to pack:

April

April in DeKalb is crisp. The average overnight temperatures in the area are in the high 30s F (single digits C). It tends to rain occasionally.

What to wear/what to pack:

May

If you visit DeKalb during May, you may see that it is balmy. Temperatures tend to hover around the low 70s F (low 20s C) during the day, while at night they can dip into the high 40s F (single digits C).

In terms of precipitation, you can expect it to rain occasionally.

What to wear/what to pack:

June

Traveling to DeKalb in June, you will notice that it is extremely warm. Expect it to rain about a third of the time. Daytime temperatures are in the low 80s F (high 20s C).

What to wear/what to pack:

July

In July, DeKalb is extremely warm. Temperatures routinely are in the low 80s F (high 20s C) and occasionally jump into the low 90s F (low 30s C) range.

At night, lows are in the low 60s F (high 10s C). This is also a rainy time for DeKalb, with a few of the days of the month having rain.

What to wear/what to pack:

August

Traveling to DeKalb in August, you will notice that it is extremely warm. Expect it to rain occasionally. Daytime temperatures are in the low 80s F (high 20s C).

What to wear/what to pack:

September

September is warm. Temperatures average in the 70s F (mid 20s C) during the day. It rains sometimes.

What to wear/what to pack:

October

In October, DeKalb is cool. Temperatures routinely are in the low 60s F (high 10s C) and 5-10 days this month jump into the low 70s F (low 20s C) range.

At night, lows are in the low 40s F (single digits C). This is also a rainy time for DeKalb, with a few of the days of the month having rain.

What to wear/what to pack:

November

November in DeKalb is brisk. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain sometimes.

What to wear/what to pack:

December

If you are traveling to DeKalb in December, you will notice that it can be extremely cold. Expect it to rain once in a while and snow about a third of the time.

Daytime temperatures are in the low 30s F (single digits below 0 C).

What to wear/what to pack:

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