Venersborg WA 10Day Weather Forecast The Weather ChannelLong-view , Washington, the weather is mild and pleasing all year round. Whether you are exploring the vibrant downtown area or adventuring the surrounding breathtaking landscapes, you can expect relaxing conditions throughout your stay. From hot summers to brisk autumns, and from mild winters to refreshing springs, Longview, Washington offers a plethora of open-air 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.