Hourly Weather Forecast for Longview WA The Weather ChannelLong-view , Washington State, the weather is temperate and delightful all year round. Whether you are visiting the vibrant downtown area or adventuring the surrounding scenic landscapes, you can expect content conditions throughout your stay. From hot summers to crisp autumns, and from gentle winters to refreshing springs, Longview, Washington offers a abundance of outdoor activities for nature enthusiasts. So pack your sunscreen and umbrella, as Longview, Washington's weather is ready to impress you with its variable and charming conditions.