The best time to visit Hammond is during the summer months, from June to August, when the weather is generally warm and sunny, great for outdoor activities.During this period, you can expect average temperatures ranging from 18°C to 24°C, with minimal rainfall. This makes it ideal for exploring the Fort Clatsop National Memorial, enjoying the beaches, or taking a boat trip on the Columbia River. The longer daylight hours also mean more time for sightseeing and enjoying the natural beauty of the area.For those who prefer slightly cooler temperatures and fewer crowds, late spring (May) or early autumn (September) are also good options. The weather is still pleasant, with average temperatures between 15°C and 20°C, and you'll find the attractions and accommodations less busy.