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

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

When to go to King County, Washington, United States of America

Based on the climate and weather in King County, the best time to go is July. See below for details.

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

January

If you visit King County during January, you are likely to find that it can be very chilly and very rainy. Temperatures tend to hover around the high 40s F (single digits C) during the day, while at night they can dip into the high 30s F (single digits C).

In terms of precipitation, you can expect it to rain about half of the time.

What to wear/what to pack:

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

February

In February, King County can be very chilly and somewhat rainy. Temperatures routinely are in the low 40s F (single digits C) and about half of the time jump into the low 50s F (single digits C) range. At night, lows are in the high 30s F (single digits C).

During your visit, you can expect a few inches of snow. This is also a rainy time for King County, with more than half of the days of the month having rain.

What to wear/what to pack:

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

March

March in King County is brisk and very rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the high 40s F (single digits C) to 50s F (low 10s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

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

April

If you go to King County in April, you will notice that it is cool and somewhat rainy. Expect it to rain about half of the time. Daytime temperatures are in the high 50s F (mid 10s C).

What to wear/what to pack:

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

May

May here is crisp and somewhat rainy. Temperatures average in the 60s F (high 10s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

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

June

June in King County is balmy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (mid 10s C) to low 60s F (low 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

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

July

If you vacation in King County during July, you are likely to find that it is a perfect temperature. Temperatures tend to hover around the 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 occasionally.

What to wear/what to pack:

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

August

August in King County is a perfect temperature. Temperatures average in the 70s F (mid 20s C) during the day. It rains occasionally.

What to wear/what to pack:

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

September

September in King County is mild. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (mid 10s C) to low 70s F (low 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

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

October

October in King County can be chilly and somewhat rainy. Temperatures average in the low 50s F (mid 10s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

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

November

November in King County is brisk and very rainy. The average overnight temperatures in the area are in the low 40s F (single digits C). It tends to rain about half of the time.

What to wear/what to pack:

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

December

If you are traveling to King County in December, you will notice that it can be brisk and very rainy. Expect it to rain about half of the time. Daytime temperatures are in the 40s F (single digits C).

What to wear/what to pack:

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

Year-round what to wear/what to pack for King County, Washington, United States of America

Here are some general tips on what to wear in King County, 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 King County
  • Appropriate museum wear

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