AURORA, Ill., Sept. 5, 2014 /PRNewswire/ -- Gas price averages across Illinois and Indiana continue to drop heading into the fall season. Illinois and Indiana drivers are currently paying on average $3.55 and $3.51 respectively for a gallon of regular unleaded. These prices mark the lowest prices for a September start since 2010.

In August in Illinois, gas prices averaged $3.51, which was down $.17 from July 2014 and down $.19 from August 2013. In northern Indiana, gas prices averaged $3.55 in August, which was down $.04 from July and down $.10 from August 2013.

"As we cruise out of the summer driving season, lower demand coupled with the switch to a cheaper winter blend of gasoline will likely bring lower prices at the pump," said Beth Mosher, AAA spokeswoman. "If we can get through September without any refinery issues, drivers should enjoy much lower prices this fall."

Other September monthly averages across the region:

• In Cook County, Ill., self-serve regular unleaded gasoline averages $3.75, which is down $.17 from last month and $.15 lower than last year's price-per-gallon.
• In DuPage County, Ill., self-serve regular unleaded gasoline averages $3.59 per gallon, which is a $.10 decrease from July and down $.16 from last year.
• In Kane County, Ill., self-serve regular unleaded gasoline averages $3.56 per gallon, which is down $.05 compared to last month and $.14 lower than August 2013's price.
• In Lake County, Ill., self-serve regular unleaded gasoline averages $3.58 per gallon, which is $.06 lower than last month and down by $.13 compared to this time last year.
• In McHenry County, Ill., self-serve regular unleaded gasoline averages $3.57 per gallon, which is $.15 lower than last month's average and $.16 lower than August 2013's price.
• In Will County, Ill., self-serve regular unleaded gasoline averages $3.56 per gallon, which is $.08 lower compared to last month and $.15 lower compared to last year.
• In Champaign County, Ill., self-serve regular unleaded gasoline averages $3.49 per gallon, a decrease of $.05 from July and $.02 lower than last year.
• In McLean County, Ill., self-serve regular unleaded gasoline averages $3.38 per gallon, which is $.07 lower than last month and $.21 lower than last year.
• In Peoria County, Ill., self-serve regular unleaded gasoline averages $3.40 per gallon, which is down $.07 compared to last month and down $.21 from August 2013.
• In Sangamon County, Ill., self-serve regular unleaded gasoline averages $3.37 per gallon, which is $.08 lower than last month and $.25 lower than last year.
• In Winnebago County, Ill., self-serve regular unleaded gasoline averages $3.45 per gallon, a decrease of $.07 from July and $.11 lower than August 2013.
• In Allen County, Ind., self-serve regular unleaded gasoline averages $3.45 per gallon, which is $.05 higher than last month and $.10 lower than August 2013's price.
• In Lake County, Ind., self-serve regular unleaded gasoline averages $3.51 per gallon, which is down $.08 from July's average and is a $.15 decrease from a year ago.
• In Porter County, Ind., self-serve regular unleaded gasoline averages $3.53 per gallon, which is $.07 lower than last month and $.12 lower than last year.
• In St. Joseph County, Ind., self-serve regular unleaded gasoline averages $3.46 per gallon, which is $.05 lower compared to last month and $.14 lower than last year.

Fuel prices are posted on-line at www.fuelgaugereport.com, which updates prices daily for unleaded, diesel and E85 blends of fuel.

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SOURCE AAA