July in Arvika is the rainiest, the sunniest, and the warmest month of the year. In July, the weather in Arvika is typically warm. Average daily high temperature in July is about 19 degrees above zero. On average, Arvika has 21 rainy, 9 sunny, and 1 partly cloudy day in July. The rains are usually heavy. July as well as March, April, May, and June is considered the most uncomfortable time to visit Arvika.