Mount Diablo State Park, California, United States of America: What to pack, what to wear, and when to go [2018]

Traveling to Mount Diablo State Park, California, United States of America? If you're planning to go to Mount Diablo State Park, here is some important information about when to go, what to wear, and what to pack:

When to go to Mount Diablo State Park, California, United States of America

Based on the climate and weather in Mount Diablo State Park, the best time to go is September. See below for details.

What to wear/what to pack for Mount Diablo State Park, California, United States of America by month

January

If you go to Mount Diablo State Park in January, you will notice that it is brisk. Daytime temperatures are in the 50s F (low 10s C).

What to wear/what to pack:

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

February

In February, Mount Diablo State Park is chilly. Temperatures routinely are in the high 50s F (mid 10s C) and 5-10 days this month jump into the low 60s F (mid 10s C) range.

At night, lows are in the low 40s F (single digits C). This is also a rainy time for Mount Diablo State Park, with several of the days of the month having rain.

What to wear/what to pack:

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

March

If you vacation in Mount Diablo State Park during March, you are likely to find that it is relatively cool.

Temperatures tend to hover around the high 50s F (mid 10s C) during the day, while at night they can dip into the low 40s F (single digits C).

What to wear/what to pack:

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

April

April in this region is chilly. Temperatures average in the 60s F (high 10s C) during the day.

What to wear/what to pack:

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

May

May in this region is balmy and dry with little rain. Temperatures average in the low 70s F (low 20s C) during the day.

What to wear/what to pack:

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

June

June for Mount Diablo State Park is warm and very dry with almost no rain. Temperatures average in the high 70s F (mid 20s C) during the day.

What to wear/what to pack:

  • Sunscreen lotion
  • Light footwear
  • Sandals
  • Shorts or short pants
  • Dresses
  • Long and short sleeve shirts
  • Skirts

July

If you vacation in Mount Diablo State Park during July, you are likely to find that it can be very hot and very dry with almost no rain.

Temperatures tend to hover around the 80s F (low 30s C) during the day, while at night they can dip into the low 50s F (mid 10s C).

What to wear/what to pack:

  • Dresses
  • Short sleeve shirts
  • Skirts
  • Shorts
  • Sandals
  • Sunscreen lotion
  • Sunglasses

August

August here is extremely hot and very dry with almost no rain. Temperatures average in the 80s F (low 20s C) during the day.

What to wear/what to pack:

  • Sunglasses
  • Shorts
  • Sandals
  • Short sleeve shirts
  • Sunscreen lotion
  • Dresses
  • Skirts

September

If you visit Mount Diablo State Park during September, you are likely to find that it is extremely warm and very dry with almost no rain.

Temperatures tend to hover around the low 80s F (high 20s C) during the day, while at night they can dip into the high 50s F (mid 10s C).

What to wear/what to pack:

  • Dresses
  • Skirts
  • Sunglasses
  • Sandals
  • Sunscreen lotion
  • Short sleeve shirts
  • Shorts

October

October here is a perfect temperature and dry with little rain. Temperatures average in the 70s F (low 20s C) during the day.

What to wear/what to pack:

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

November

November in Mount Diablo State Park is cool. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 50s F (low 10s C) to low 60s F (high 10s C), although night temperatures can dip into the low 40s F (single digits C).

What to wear/what to pack:

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

December

December in Mount Diablo State Park is relatively cool. 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:

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

Year-round what to wear/what to pack for Mount Diablo State Park, California, United States of America

Here are some general tips on what to wear in Mount Diablo State Park, 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 Mount Diablo State Park
  • Bicycle friendly attire, if you plan on biking anywhere

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