Iran's judiciary head signaled Wednesday there would be fast trials and executions ahead for suspects detained in nationwide protests despite a warning from President Trump.

Wind chill will make the feels-like temperature drop into the minus-teens this weekend, threatening hypothermia to those outdoors.

A source inside Iran who was able to call out told CBS News on Tuesday that activist groups working to compile a full death toll from the protests, based on reports from medical officials across the country, believed the toll was at least 12,000, and possibly as high as 20,000.

The nationwide protests challenging Iran's theocracy appear increasingly smothered a week after authorities shut the country off from the world and escalated a bloody crackdown.