Simulated historical climate weather data for LongviewLongview , Washington, the weather is mild and pleasing all year round. Whether you are touring the dynamic downtown area or adventuring the surrounding breathtaking landscapes, you can expect comfortable climate throughout your stay. From hot summers to brisk autumns, and from temperate winters to cooling springs, Longview, Washington offers a plethora of alfresco activities for nature enthusiasts. So bring your sunblock and parasol, as Longview, Washington's weather is ready to impress you with its variable and captivating conditions.