In April, the weather in Ulyanovsk is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Ulyanovsk has 10 partly cloudy, 8 rainy, 8 sunny, and 4 cloudy days in April. The rains are usually light. April as well as January, March, October, and November is considered the most uncomfortable time to visit Ulyanovsk.