Average retail gasoline prices in Connecticut have risen 2 cents per gallon in the past week, averaging $2.31 a gallon Sunday, Oct. 9, according to GasBuddy's daily survey of 1,540 gas outlets in Connecticut.

This compares with the national average that has increased 3.3 cents per gallon in the last week to $2.25 a gallon according to gasoline price website GasBuddy.com.

Including the change in gas prices in Connecticut during the past week, prices yesterday were 4.0 cents per gallon lower than the same day one year ago and are 2.7 cents per gallon higher than a month ago. The national average has increased 7.9 cents per gallon during the last month and stands 6.1 cents per gallon lower than this day one year ago.

According to GasBuddy historical data, gasoline prices on Oct. 10 in Connecticut have ranged widely over the last five years:

$2.35/g in 2015, $3.53/g in 2014, $3.70/g in 2013, $4.12/g in 2012 and $3.68/g in 2011.

Areas nearby Connecticut and their current gas price climate:

Waterbury- $2.28/g, up 2.5 cents per gallon from last week's $2.26/g.

New Haven- $2.28/g, up 0.7 cents per gallon from last week's $2.27/g.

Hartford- $2.27/g, up 1.8 cents per gallon from last week's $2.25/g.