Contra Costa County, California, United States of America: What to pack, what to wear, and when to go [2021]

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Traveling to Contra Costa County, California, United States of America? If you're planning to go to Contra Costa County, here is some important information about when to go, what to wear, and what to pack.

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When to go to Contra Costa County, California, United States of America

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

Important esssentials for Contra Costa County, California, United States of America

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

What to wear/what to pack for Contra Costa County, California, United States of America by month

January

If you vacation in Contra Costa County during January, you might find that it is crisp. Temperatures tend to hover around the 50s F (low 10s C) during the day, while at night they can dip into the low 40s F (single digits C).

In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

February

February in Contra Costa County is crisp. The average overnight temperatures in the area are in the low 40s F (single digits C).

What to wear/what to pack:

March

March in this region is cool. Temperatures average in the low 60s F (mid 10s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

April

April in Contra Costa County is chilly. The average overnight temperatures in the area are in the 40s F (single digits C).

What to wear/what to pack:

May

If you are traveling to Contra Costa County in May, you will notice that it is mild and dry with little rain. Daytime temperatures are in the 60s F (high 10s C).

What to wear/what to pack:

June

If you are traveling to Contra Costa County in June, you will notice that it is balmy and very dry with almost no rain. Daytime temperatures are in the low 60s F (low 20s C).

What to wear/what to pack:

July

If you vacation in Contra Costa County during July, you are likely to see that it is balmy and very dry with almost no rain.

Temperatures tend to hover around the low 60s F (low 20s C) during the day, while at night they can dip into the 50s F (low 10s C).

What to wear/what to pack:

August

If you are traveling to Contra Costa County in August, you will notice that it is mild and very dry with almost no rain. Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

September

September in this region is mild and very dry with almost no rain. Temperatures average in the low 70s F (low 20s C) during the day.

What to wear/what to pack:

October

If you vacation in Contra Costa County during October, you will probably see that it is balmy and dry with little rain.

Temperatures tend to hover around the low 60s F (low 20s C) during the day, while at night they can dip into the low 50s F (single digits C).

What to wear/what to pack:

November

If you are traveling to Contra Costa County in November, you will notice that it is relatively cool. Expect it to rain regularly. Daytime temperatures are in the low 60s F (high 10s C).

What to wear/what to pack:

December

December in this region is crisp. Temperatures average in the 50s F (low 10s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

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