April in Scottsbluff is the rainiest, the windiest, and the cloudiest month of the year. In April, the weather in Scottsbluff is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Scottsbluff has 15 partly cloudy, 8 sunny, 6 rainy, and 1 cloudy day in April. The rains are usually moderate.