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

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

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

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

Important esssentials for Jacksonville, Illinois, United States of America

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

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

January

January in this region is frigid. Temperatures average in the 30s F (single digits C) during the day. It rains once in a while.

What to wear/what to pack:

February

February in this region is cold. Temperatures average in the low 40s F (single digits C) during the day. It rains occasionally.

What to wear/what to pack:

March

March in Jacksonville is cold. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 40s F (single digits C) to low 50s F (low 10s C), although night temperatures can dip into the low 20s F (single digits below 0 C).

What to wear/what to pack:

April

Traveling to Jacksonville in April, you will notice that it is mild. Expect it to rain once in a while. Daytime temperatures are in the 60s F (high 10s C).

What to wear/what to pack:

May

If you vacation in Jacksonville during May, you might see that it is warm. Temperatures tend to hover around the 70s F (mid 20s C) during the day, while at night they can dip into the low 50s F (low 10s C).

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

What to wear/what to pack:

June

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

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

What to wear/what to pack:

July

July in Jacksonville can be sweltering. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 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

Traveling to Jacksonville in August, you will notice that it can be very hot. Expect it to rain occasionally. Daytime temperatures are in the high 80s F (low 30s C).

What to wear/what to pack:

September

If you are traveling to Jacksonville in September, you will notice that it is warm. Expect it to rain occasionally. Daytime temperatures are in the low 70s F (high 20s C).

What to wear/what to pack:

October

October is balmy. Temperatures average in the high 60s F (low 10s C) during the day. It rains once in a while.

What to wear/what to pack:

November

If you vacation in Jacksonville during November, you may notice that it is pretty cool. Temperatures tend to hover around the low 50s F (low 10s C) during the day, while at night they can dip into the low 30s F (single digits C).

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

What to wear/what to pack:

December

December in Jacksonville is brisk. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the high 30s 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:

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