June in Alloa is the cloudiest month of the year. In June, the weather in Alloa is typically warm. Average daily high temperature in June is about 14 degrees above zero. On average, Alloa has 21 rainy, 5 cloudy, 3 sunny, and 1 partly cloudy day in June. The rains are usually moderate. June as well as January, February, March, and April is considered the most uncomfortable time to visit Alloa.