Illinois, Illinois, United States of America: What to pack, what to wear, and when to go [2018]

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

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

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

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

January

If you go to Illinois in January, you will notice that it is frigid. Expect it to rain or snow a bit less than half of the time. Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

  • Multiple layer jacket shell
  • Waterproof boots
  • Thermal undergarments
  • Very heavy socks
  • Sweaters
  • Scarf
  • Umbrella
  • Gloves
  • Pajamas, such as sweats
  • Waterproof coat
  • Insulated boots
  • Fleeces

February

If you go to Illinois in February, you will notice that it is pretty cool. Expect it to rain or snow regularly. Daytime temperatures are in the high 30s F (single digits C).

What to wear/what to pack:

  • Waterproof boots
  • Umbrella
  • Waterproof coat
  • Sweaters
  • Heavy jacket
  • Heavy socks
  • Cold weather footwear
  • Warm pants or jeans
  • Gloves or mittens

March

March in this region is cold. Temperatures average in the low 50s F (single digits C) during the day. It rains or snows about a third of the time.

What to wear/what to pack:

  • Warm pants or jeans
  • Umbrella
  • Waterproof coat
  • Waterproof boots
  • Cold weather footwear
  • Heavy jacket
  • Heavy socks
  • Gloves or mittens
  • Sweaters

April

If you are traveling to Illinois in April, you will notice that it is crisp. 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:

  • Socks
  • Long skirts
  • Rain coat
  • Dresses
  • Umbrella
  • Waterproof footwear
  • Waterproof luggage
  • Light jacket or fleece
  • Long sleeve shirts or blouses
  • Pants or jeans
  • Standard footwear

May

May in Illinois is a perfect temperature. The rain can amount to several inches/centimeters. During this time, temperatures average in the 70s F (low 20s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

  • Umbrella
  • Light footwear
  • Rain coat
  • Waterproof luggage
  • Skirts
  • Waterproof footwear
  • Shorts or short pants
  • Long and short sleeve shirts
  • Dresses
  • Sandals
  • Sunscreen lotion

June

If you go to Illinois in June, you will notice that it is pretty consistently hot. 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:

  • Rain coat
  • Dresses
  • Umbrella
  • Sunscreen lotion
  • Skirts
  • Sandals
  • Waterproof luggage
  • Shorts
  • Sunglasses
  • Short sleeve shirts
  • Waterproof footwear

July

July in Illinois is really hot. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 80s F (low 30s C).

What to wear/what to pack:

  • Rain coat
  • Sunscreen lotion
  • Skirts
  • Short sleeve shirts
  • Sunglasses
  • Umbrella
  • Waterproof footwear
  • Sandals
  • Waterproof luggage
  • Shorts
  • Dresses

August

If you visit Illinois during August, you are likely to find that it is constantly hot. Temperatures tend to hover around the 80s F (low 20s C) during the day, while at night they can dip into the low 60s F (mid 10s C).

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

What to wear/what to pack:

  • Waterproof luggage
  • Short sleeve shirts
  • Waterproof footwear
  • Rain coat
  • Umbrella
  • Sunscreen lotion
  • Dresses
  • Sandals
  • Sunglasses
  • Shorts
  • Skirts

September

If you visit Illinois during September, you are likely to find that it is warm. Temperatures tend to hover around the high 70s F (mid 20s C) during the day, while at night they can dip into the 50s F (low 10s C).

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

What to wear/what to pack:

  • Sandals
  • Rain coat
  • Sunscreen lotion
  • Light footwear
  • Dresses
  • Waterproof footwear
  • Waterproof luggage
  • Skirts
  • Shorts or short pants
  • Umbrella
  • Long and short sleeve shirts

October

Traveling to Illinois in October, you will notice that it is balmy. Expect it to rain 5-10 days this month. Daytime temperatures are in the 60s F (high 10s C).

What to wear/what to pack:

  • Dresses
  • Waterproof footwear
  • Long skirts
  • Long sleeve shirts or blouses
  • Light jacket or fleece
  • Umbrella
  • Rain coat
  • Socks
  • Standard footwear
  • Waterproof luggage
  • Pants or jeans

November

If you are traveling to Illinois in November, you will notice that it can be very chilly. Expect it to rain or snow regularly. Daytime temperatures are in the low 50s F (low 10s C).

What to wear/what to pack:

  • Waterproof boots
  • Umbrella
  • Waterproof coat
  • Fleeces
  • Standard footwear
  • Socks
  • Warm pants or jeans
  • Jacket or coat
  • Light gloves or mittens

December

December in this region is cold. Temperatures average in the high 30s F (single digits C) during the day. It rains or snows regularly.

What to wear/what to pack:

  • Cold weather footwear
  • Umbrella
  • Gloves or mittens
  • Heavy socks
  • Heavy jacket
  • Warm pants or jeans
  • Waterproof coat
  • Sweaters
  • Waterproof boots

Year-round what to wear/what to pack for Illinois, Illinois, United States of America

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

  • A plug adadpter that supports outlet types A and B
  • A SIM card that works in Illinois
  • If you plan to visit a church, make sure to bring appropriate clothing
  • If you are visiting a temple, pack respectful clothing
  • Appropriate museum wear

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