January in Rahim Yar Khan is the coldest month of the year. In January, the weather in Rahim Yar Khan is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Rahim Yar Khan has 30 sunny and 1 partly cloudy day in January. January as well as February and December is considered the most comfortable time to visit Rahim Yar Khan.