It was a dark and cloudy night.

Bryan Kohberger, 30, was a Ph.D. student at Washington State University in Pullman, Washington, Nov. 13, 2022, when prosecutors allege he took a short drive to the neighboring University of Idaho in Moscow, Idaho, and killed four students in a 4 a.m. home invasion stabbing.

His defense says he was just out for a drive and didn’t go to the students’ apartment.

National Weather Service records Idaho prosecutors plan to introduce during his upcoming trial show fog, reduced visibility and low clouds at the time, according to Andrew Wulfeck, a FOX Weather meteorologist and digital producer. 

Exterior evening shot of the rear sliding door of the former off-campus rental house at 1122 King Road in November 2022. (Derek Shook for Fox News Digital)

“[This is] another piece of information that does not appear to be shaping up in Kohberger’s favor,” said Boise defense attorney Edwina Elcox, who has been following the case. Last week, she said the revelation in court documents that Kohberger allegedly purchased a Ka-Bar knife and sheath set on Amazon was “catastrophic” to his defense.

The November 2022 slayings killed Madison Mogen, 21, Kaylee Goncalves, 21, Xana Kernodle, 20, and Ethan Chapin, 20. Under Mogen’s remains, police found a leather Ka-Bar sheath that prosecutors allege had Kohberger’s DNA on the snap.

Jury selection is scheduled for July 30, with an official start date of Aug. 11. 

A previous judge entered not guilty pleas on Kohberger’s behalf at an arraignment in May 2023. He could face the death penalty if convicted.