July in Seward is the warmest month of the year. In July, the weather in Seward is typically warm. Average daily high temperature in July is about 12 degrees above zero. On average, Seward has 15 rainy, 9 cloudy, 5 sunny, and 2 partly cloudy days in July. The rains are usually heavy. July as well as April, May, June, and August is considered the most uncomfortable time to visit Seward.