Grayslake, Illinois, United States of America: What to pack, what to wear, and when to go [2022]

This article contains affiliate links to Amazon and other vendors. We may earn commission from purchases made through these links.

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

Contents

About your travel guide

Hi! I'm Dev. I've traveled all over the world and in my travels, I have made many packing lists. In this series, my team and I have compiled the most useful information, as well as things we couldn't live without, to help you plan your trip.


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

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

Important essentials for Grayslake, Illinois, United States of America

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

COVID-19 ESSENTIALS FOR 2022


  • Travel insurance

    If you or a companion get COVID-19, your amazing trip can be ruined. Good travel insurance can help. See plans


  • Travel disinfecting wipes

    Use these to sanitize plane and hotel surfaces.


  • A vaccine card protector

    Vaccine cards often wear away. An unreadable card can have severe consequences. This vaccine card protector helps avoid that.


  • N95 masks to use in crowded airports

    These N95 masks provide the best level of protection you can have.


  • Hand sanitizer

    This hand sanitizer is an easy-to-carry TSA-friendly choice.


  • Kids' KN95 masks

    N95 masks don't exist for kids. These are a good alternative (and can also be used by adults if N95 masks are not available).

General health necessities

Don't forget these

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

Already know when you're traveling?

January

January in Grayslake is frosty, snowy and somewhat rainy. 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 5-10 days this month. It also snows regularly. 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:

February

February in Grayslake is frosty and snowy. The 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:

March

March in Grayslake is pretty cool, snowy and somewhat rainy. The snow can amount to several inches/centimeters. During this time, temperatures average in the high 30s F (single digits C) to high 40s 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:

April

April in Grayslake is chilly and somewhat rainy. The average overnight temperatures in the area are in the high 30s F (single digits C). It tends to rain about half of the time. With the colder weather comes lower humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

May

If you visit Grayslake during May, you will probably notice that it is balmy and somewhat rainy. 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). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain regularly.

What to wear/what to pack:

June

In June, Grayslake is a perfect temperature and somewhat rainy. Temperatures routinely are in the low 70s F (high 20s C) range. At night, lows are in the high 50s F (mid 10s C). This is also a rainy time for Grayslake, with several of the days of the month having rain. In June, humidity reaches as high as 60%.

What to wear/what to pack:

July

July for Grayslake is hot and somewhat rainy. Temperatures average in the 80s F (high 20s C) during the day. It rains regularly.

What to wear/what to pack:

August

August in this region is extremely warm. Temperatures average in the low 80s F (high 20s C) during the day. It rains about a third of the time.

What to wear/what to pack:

September

In September, Grayslake is a perfect temperature and somewhat rainy. Temperatures routinely are in the 70s F (mid 20s C) and regularly jump into the low 80s F (high 20s C) range. At night, lows are in the 50s F (low 10s C). This is also a rainy time for Grayslake, with several of the days of the month having rain. In September, humidity reaches as high as 60%.

What to wear/what to pack:

October

October in Grayslake is relatively cool. The average overnight temperatures in the area are in the low 40s F (single digits C). It tends to rain a bit less than half of the time. With the colder weather comes lower humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

November

November in Grayslake is pretty cool and somewhat rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 40s F (single digits C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

December

December in Grayslake is freezing, snowy and somewhat rainy. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain about a third of the time. It also snows regularly. 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:

Activities for Grayslake, Illinois, United States of America

Here are some activity recommendations and activity-specific packing tips for Grayslake.

Check out our guides for these other locations: Burgas, Bulgaria, Słubice, Poland, Yoder, Kansas, United States of America, Union County, New Jersey, United States of America, Härjedalen, Sweden, Great Basin National Park, Nevada, United States of America, Kiunga, Papua New Guinea, Banteay Chhmar, Cambodia, Mount Gretna, Pennsylvania, United States of America, Saharanpur, India, and Csongrád County, Hungary.