Average retail gasoline prices in Connecticut have fallen 0.9 cents per gallon in the past week, averaging $2.30 gallon Sunday, according to GasBuddy's daily survey of 1,540 gas outlets in Connecticut. This compares with the national average that has fallen 2.4 cents per gallon in the last week to $2.23 gallon, according to gasoline price website GasBuddy.com.

Including the change in gas prices in Connecticut during the past week, prices Sunday were 2.6 cents per gallon lower than the same day one year ago and are 2.1 cents per gallon higher than a month ago. The national average has increased 3.0 cents per gallon during the last month and stands 3.4 cents per gallon lower than this day one year ago.

According to GasBuddy historical data, gasoline prices on October 17 in Connecticut have ranged widely over the last five years:

$2.33 gallon in 2015, $3.44 gallon in 2014, $3.68 gallon in 2013, $4.08 gallon in 2012 and $3.70 gallon in 2011.

Areas nearby Connecticut and their current gas price climate:

Waterbury- $2.28 gallon, flat from last week's $2.28 gallon.

New Haven- $2.28 gallon, down 1.1 cents per gallon from last week's $2.29 gallon.

Hartford- $2.26 gallon, down 0.8 cents per gallon from last week's $2.27 gallon.

"October is a time we all expect gas prices to decline. Looking at the change in the U.S. average price for Octobers from 2015 to 2012, it's dropped from Oct 1 to Oct. 31 by 12, 34, 11 and 26 cents respectively," said Gregg Laskoski, senior petroleum analyst for GasBuddy. "That's an average decrease of 20 cents per gallon during the last four Octobers."