Washington, Illinois, United States of America: What to pack, what to wear, and when to go [2023]

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

Contents

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

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

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

Already know when you're traveling?

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

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

January

January in Washington is freezing. The average overnight temperatures in the area are in the 10s F (single digits below 0 C), with a few days below 0 F (10+ below zero C). It snows sometimes.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airports constantly losing bags these days, an AirTag can find it anywhere on earth: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials

  • Travel pillow

    An excellent option is this one

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Take care to find the correct type. The majority of adapters that you can buy are just plug changers and expect your electronics to change the voltage themselves. If yours can't do that they could burn up. This one should work in most areas.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Save money with this

February

February in Washington is brisk. 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 high 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:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports frequently losing luggage nowadays, an AirTag can locate it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to pick the necessary type. A lot of adapters currently being sold are just plug changers and expect your electronics to adjust the voltage themselves. If yours can't do that they could burn up. This one should be sufficient for most countries.

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck support pillow

    Our fave is this one

March

March in Washington can be brisk. The average overnight temperatures in the area are in the high 20s F (single digits below 0 C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines always losing bags recently, an AirTag can find it anywhere in the world: AirTag for iPhones.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials

  • Travel pillow

    A good option is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Make sure to find the right type. The majority of adapters available are just plug changers and expect your devices to adjust the voltage themselves. If your devices can't do that they could get fried. This one works in most locations.

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Save money with this

  • Power bank for devices

    A portable power bank, like this one

April

April in Washington is cool. The average overnight temperatures in the area are in the low 30s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airlines frequently losing luggage recently, an AirTag can help you find it anywhere on earth: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Save money with this

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Be careful to get the correct kind. A lot of adapters on sale are just plugs and expect your devices to adjust the voltage themselves. If yours can't do that they could get destroyed. This one should work in most countries.

  • Travel neck support pillow

    A versatile choice is this one

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

May

If you vacation in Washington during May, you will probably notice that it is warm. Temperatures tend to hover around the 70s F (low 20s C) during the day, while at night they can dip into the high 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your stuff.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines frequently losing bags recently, an AirTag can locate it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Plug adapter

    A plug adapter that supports outlet types A and B. Be sure to pick the necessary type. Most adapters currently available are simply plug changers and expect your devices to convert the voltage themselves. If yours can't do that they could get fried. This one is sufficent for most countries.

  • Travel neck pillow

    A great choice is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Save money with this

June

In June, Washington is hot. Temperatures routinely are in the low 80s F (high 20s C) and sometimes jump into the low 90s F (low 30s C) range. At night, lows are in the high 50s F (mid 10s C). This is also a rainy time for Washington, with several of the days of the month having rain.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airlines repeatedly losing luggage nowadays, an AirTag can help you find it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge excessive penalties for overweight luggage. Save money with this

  • Power bank for devices

    A portable power bank, like this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Take care to choose the correct type. Many adapters currently being sold are just plug changers and require your electronics to adjust the voltage themselves. If your devices can't do that they could get fried. This one should work in most locations.

  • Travel pillow

    A versatile choice is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

July

July in this region is really hot. Temperatures average in the 80s F (low 20s C) during the day.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your stuff.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airports repeatedly losing bags these days, an AirTag can find it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge huge prices for overweight luggage. Avoid surcharges with this

  • Power bank for devices

    A portable power bank, like this one

  • Plug adapter

    A plug adapter that supports outlet types A and B. Check that you pick the correct type. Many adapters currently sold are simply plug changers and require your devices to convert the voltage themselves. If yours can't do that they could burn up. This one works in most countries.

  • Travel pillow

    What we like is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

August

If you visit Washington during August, you might see that it is pretty consistently 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 (mid 10s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airlines always losing luggage nowadays, an AirTag can locate it anywhere in the world: AirTag for iPhones.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge large penalties for overweight luggage. Avoid penalties with this

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck support pillow

    Our fave is this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Ensure that you find the correct kind. The vast majority of adapters on sale are simply plugs and require your devices to convert the voltage themselves. If yours can't do that they could burn up. This one should be appropriate for most locations.

September

If you vacation in Washington during September, you will probably 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 low 50s F (low 10s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your things.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines constantly losing bags these days, an AirTag can find it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Save money with this

  • Travel neck support pillow

    An excellent option is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to choose the right type. The vast majority of adapters currently being sold are simply plug changers and require your electronics to convert the voltage themselves. If your electronics can't do that they could get destroyed. This one is sufficent for most locations.

October

If you are traveling to Washington in October, you will notice that it is mild. Daytime temperatures are in the high 60s F (high 10s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your belongings.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines always losing luggage nowadays, an AirTag can help you find it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Take care to choose the correct type. Many adapters that you can buy are simply plugs and require your devices to adjust the voltage themselves. If yours can't do that they could get fried. This one works in most places.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Save money with this

  • Travel neck pillow

    What we like is this one

  • Power bank for devices

    A portable power bank, like this one

November

November in Washington can be brisk. The average overnight temperatures in the area are in the low 30s F (single digits below 0 C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports constantly losing luggage nowadays, an AirTag can help you find it anywhere in the world: AirTag for iPhones.

Comfort + Essentials

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Take care to find the correct type. The vast majority of adapters currently being sold are just plugs and expect your electronics to convert the voltage themselves. If your devices can't do that they could get fried. This one should be sufficient for most countries.

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Avoid penalties with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    Our fave is this one

December

December in Washington is brisk. 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 high 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:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in Washington. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airlines repeatedly losing bags recently, an AirTag can find it anywhere on earth: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your stuff.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Plug adapter

    A plug adapter that supports outlet types A and B. Check that you find the right kind. The majority of adapters that you can buy are just plug changers and require your devices to convert the voltage themselves. If your devices can't do that they could get destroyed. This one is sufficent for most locations.

  • Travel neck support pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

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.

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