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

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Traveling to O'Fallon, Illinois, United States of America? If you're planning to go to O'Fallon, this is 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 O'Fallon, Illinois, United States of America

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

Important essentials for O'Fallon, Illinois, United States of America

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

COVID-19 ESSENTIALS FOR 2022


  • N95 masks to use in crowded airports

    These N95 masks provide the best level of protection possible.


  • 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).


  • Hand sanitizer

    This hand sanitizer is an easy-to-carry plane-friendly product.


  • 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 frequently wear out. An unreadable card may result in severe consequences. This vaccine card protector helps stop that.

General health necessities

Don't forget these

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

Already know when you're traveling?

January

January in O'Fallon is cold. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain 5-10 days this month. It also snows sometimes. But the colder weather doesn't bring low humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

February

If you go to O'Fallon in February, you will notice that it can be brisk. Expect it to rain 5-10 days this month. Daytime temperatures are in the 40s F (single digits C).

What to wear/what to pack:

March

If you visit O'Fallon during March, you may see that it is cool and somewhat rainy. Temperatures tend to hover around the 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 50 and 60% during the day. In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

April

April for O'Fallon is balmy and somewhat rainy. Temperatures average in the high 60s F (high 10s C) during the day. It rains regularly.

What to wear/what to pack:

May

May in this region is a perfect temperature and somewhat rainy. Temperatures average in the 70s F (mid 20s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

June

If you go to O'Fallon in June, you will notice that it is pretty consistently hot. Expect it to rain a bit less than half of the time. Daytime temperatures are in the 80s F (high 20s C).

What to wear/what to pack:

July

If you go to O'Fallon in July, you will notice that it is really hot. Expect it to rain a bit less than half of the time. Daytime temperatures are in the high 80s F (low 30s C).

What to wear/what to pack:

August

If you are traveling to O'Fallon in August, you will notice that it is consistently hot. Expect it to rain a bit less than half of the time. Daytime temperatures are in the high 80s F (low 30s C).

What to wear/what to pack:

September

September in O'Fallon is hot. Temperatures average in the low 80s F (high 20s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

October

October in O'Fallon is balmy. The average overnight temperatures in the area are in the 40s F (single digits C), with a few days below 32 F (single digits C). It tends to rain 5-10 days this month. 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 O'Fallon is cool. The average overnight temperatures in the area are in the 30s F (single digits C). It tends to rain regularly. But the colder weather doesn't bring low humidity, which is in the 50% to 60% range on average.

What to wear/what to pack:

December

If you go to O'Fallon in December, you will notice that it is pretty cool. Expect it to rain regularly. Daytime temperatures are in the low 40s F (single digits C).

What to wear/what to pack:

Activities for O'Fallon, Illinois, United States of America

Here are some activity recommendations and activity-specific packing tips for O'Fallon.

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