Longview Washington USA 14 day weather forecastLongview , Washington, the weather is temperate and pleasing all year round. Whether you are touring the vibrant downtown area or exploring the surrounding picturesque landscapes, you can expect content conditions throughout your stay. From balmy summers to brisk autumns, and from moderate winters to invigorating springs, Longview, Washington offers a abundance of outdoor activities for adventure seekers. So bring your sun lotion and parasol, as Longview, Washington's weather is ready to delight you with its changeful and endearing conditions.