SAN ANTONIO -

Rain wasn't the only thing falling Monday. Gas prices continued their slide, down 7 cents in the past week, according to figures from AAA.

Lois Bell filled up her tank for less than $50, something she had not seen in a while.

"Gas is cheaper here," Bell said after returning from an appointment on the south side of town. "It was a blessing for me to make it over here to get my gas."

She filled up for $3.18 a gallon at the HEB on Austin Highway. Around the corner, gas was selling as low as $3.15 a gallon for cash only.

"I live on the south side, and the gas is really high over there," said motorist Evangelina Vasquez.

Instead, she fills up on the northeast side of town to save 15 or 20 cents a gallon.

The average locally was $3.31 a gallon, according to AAA. 

The main reason for the September drop is seasonal. Stations are beginning to switch to winter blends, which are cheaper to manufacture.

Also, nerves have calmed over Syria and the heavy summer driving season is over, meaning more supply is available.

Prices are expected to continue to fall, as much as 15 cents by Halloween.

For a list of recent stories Marilyn Moritz has done, click here.