Longview 7day Weather Forecast Long-view , Washington, the weather is gentle and pleasing all year round. Whether you are visiting the vibrant downtown area or exploring the surrounding breathtaking landscapes, you can expect content conditions throughout your stay. From balmy summers to cool autumns, and from gentle winters to refreshing springs, Longview, Washington offers a abundance of open-air activities for nature enthusiasts. So pack your sunblock and parasol, because Longview, Washington's weather is ready to amaze you with its unpredictable and captivating conditions.