MISSOULA — Football weather has rolled into the Garden City, with snowflakes coating rooftops, trees and windshields.

The projected temperature for Saturday's 3:30 p.m. kickoff pitting Montana against No. 18 Northern Arizona is 34 degrees, with light winds and a less than 10 percent chance of precipitation. By the game's end, it's supposed to dip below freezing.

Bundle up, Griz fans. Bring a blanket and some hand warmers. 

The drop in temperature is a vast difference from last weekend in Ogden, Utah, where it was sunny and 63 degrees.

Enough about the weather. Here are four other things to watch out for in Montana's penultimate home game against Northern Arizona:

NAU QB Case Cookus: Cookus is one of the best quarterbacks the Grizzlies have seen this season. 

Montana's defense has a tall task ahead of it.

Cookus averages 328.9 yards passing per game and completes 58.8 percent of his attempts. He's only thrown four interceptions compared to his 19 touchdown passes. 

Cookus has thrown 30 passes that were 25 yards or longer this season. Only two of them were touchdowns. 

While on the topic of quarterbacks...

UM QB Gresch Jensen: Jensen is in concussion protocol. He's been "day-to-day" all week. 

If Jensen can't go, the next man up is third-string quarterback Caleb Hill. He directed a drive at the end of the fourth quarter against Weber State where he had the chance to show some of his skills — his legs and two key passes to Josh Horner. 

Hill isn't the only quarterback Montana has available. Makena Simis has taken reps this season in a goal-line package. 

On Monday at Montana coach Bob Stitt's press conference, he said both Hill and Simis would be ready.  

On the topic of more injuries...

NAU WR Elijah Marks: Marks is a man of many weapons, but he missed last week with a knee injury and Northern Arizona head coach Jerome Souers said this week that Marks was questionable to play against Montana.

He's one of the driving forces of Northern Arizona's offense and return game.

Marks averages 135 yards per game through the air. On returns, he averages 6.2 yards per punt return and 23.25 yards per kick return. He had a 100-yard kickoff return touchdown earlier in the season. 

If Marks doesn't go on Saturday, the Lumberjacks turn to Chancellor Brewington.

Brewington filled Marks' shoes to the best of his ability last week against Sacramento State with 120 yards receiving and a touchdown. His yardage last week was almost half of his entire season's production. 

Limited turnovers: Montana had five turnovers last week. It's hard to win when a team is -5 in the turnover margin. 

Four of those cough-ups came on offense, with one on special teams. 

The Grizzlies have worked on that in practice this week. 

Amie Just covers Griz football for the Missoulian, among other things. Follow her on Twitter @Amie_Just or email her at Amie.Just@406mtsports.com.