Image: Steve Lunde

Sun low in sky. At Express Mart in Blair in Wisconsin’s Trempealeau County. Low too is gasoline, dipping below $2.99 a gallon. The national average was $3.27, according to American Automobile Association trackers. In Minnesota:

Lewiston: $2.88 at Kwik Trip.

Nodine: $2.87 at Kwik Trip.

St.  Charles: $2.77 at Cenex, Kwik Trip and Love’s.

Stockton: $2,85 at Clark.

Winona: $3.04 at KwikTrip and Sinclair.

The primary reason for lower prices is a global weakness of oil prices, which have fallen nearly 20%, or more than $15 a barrel, since early September.