Venersborg WA 10Day Weather Forecast The Weather ChannelLong-view , Washington State, the weather is mild and agreeable all year round. Whether you are visiting the lively downtown area or adventuring the surrounding breathtaking landscapes, you can expect content weather throughout your stay. From hot summers to crisp autumns, and from moderate winters to invigorating springs, Longview, Washington offers a abundance of alfresco activities for nature enthusiasts. So carry your sunblock and umbrella, as Longview, Washington's weather is ready to impress you with its changeful and captivating conditions.