Although the relatively mild Pacific Northwest weather doesn't make climate-controlled storage in Seattle a must, there are many instances in which you would want to consider it. Recent heat waves have broken records in the Seattle area during the summer months and have caused many storage users to reevaluate the way they store things throughout the year. Seattle climate-controlled storage acts as an air conditioner or heater to maintain a constant medium temperature so items can't get damaged.
But climate control is more than just having a storage unit with temperature control. It can also help fight against humidity. Seattle is known for having high humidity. Not to mention, it's one of the rainiest cities in the United States, so that should be cause for concern while storing sensitive items for long periods of time. With a climate-controlled unit, you'll be able to diminish the residual humidity within your unit and protect items such as guitars, clothes, electronics, and metal objects, which can be damaged by high humidity.
In order to protect your belongings from the elements while in storage, use this list of climate-controlled storage facilities to find the best option for you.