Hourly Weather Forecast for Longview WA The Weather Long view , Washington, the weather is mild and enjoyable all year round. Whether you are exploring the vibrant downtown area or discovering the surrounding scenic landscapes, you can expect comfortable climate throughout your stay. From warm summers to crisp autumns, and from moderate winters to cooling springs, Longview, Washington offers a variety of alfresco activities for nature enthusiasts. So bring your sunscreen and umbrella, as Longview, Washington's weather is ready to impress you with its variable and charming conditions.