In April, the weather in Grand Forks is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Grand Forks has 9 partly cloudy, 8 sunny, 6 rainy, 6 cloudy, and 1 snowy day in April. The rains are usually moderate. April as well as January, March, and November is considered the most uncomfortable time to visit Grand Forks.