January in Jalalabad is the coldest month of the year. In January, the weather in Jalalabad is typically warm. Average daily high temperature in January is about 11 degrees above zero. On average, Jalalabad has 27 sunny, 3 partly cloudy, and 1 rainy day in January. The rains are usually light. January as well as February, June, July, and August is considered the most uncomfortable time to visit Jalalabad.