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

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

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

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

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

January

January in McLean is very cold. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the 20s F (single digits below 0 C) to low 30s F (single digits C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

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

February

February in McLean can be very chilly. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C), with a few days below 0 F (10+ below zero C). It tends to rain 5-10 days this month.

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:

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

March

March in McLean is brisk and somewhat rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the 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:

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

April

April in McLean is relatively cool and somewhat rainy. The average overnight temperatures in the area are in the low 40s F (single digits C).

It tends to rain regularly. With the colder weather comes lower humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

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

May

May in McLean is a perfect temperature and somewhat rainy. Temperatures average in the low 70s F (low 20s C) during the day. It rains about a third of the time.

What to wear/what to pack:

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

June

If you vacation in McLean during June, you are likely to find that it is 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 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 about a third of the time.

What to wear/what to pack:

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

July

July here can be sweltering. Temperatures average in the 80s F (low 20s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

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

August

August in McLean is extremely warm. The rain can amount to several inches/centimeters.

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

What to wear/what to pack:

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

September

If you are traveling to McLean 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:

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

October

October in McLean is crisp. The rain can amount to several inches/centimeters. During this time, temperatures average in the 60s F (high 10s C), although night temperatures can dip into the low 40s F (single digits C).

What to wear/what to pack:

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

November

If you visit McLean during November, you are likely to find that it is cold. 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).

Humidity is generally between 60 and 70% during the day. In terms of precipitation, you can expect it to rain regularly.

What to wear/what to pack:

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

December

December in McLean can be extremely cold and somewhat rainy. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the high 20s F (single digits below 0 C) to 30s F (single digits C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

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

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

Here are some general tips on what to wear in McLean, 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 McLean

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