July in Jyväskylä is the rainiest, the sunniest, and the warmest month of the year. In July, the weather in Jyväskylä is typically warm. Average daily high temperature in July is about 20 degrees above zero. On average, Jyväskylä has 19 rainy, 9 sunny, 2 partly cloudy, and 1 cloudy day in July. The rains are usually moderate.