According to CoinMeta, and as reported by CBS, the average price of gasoline in the United States could drop below $4 per gallon as early as Tuesday local time; this would be the first time since July that gasoline prices have fallen to this level. As of Monday, the National Average Gas Price (as reported by the American Automobile Association: AAA) was $4.0093 per gallon. This price is down more than 36 cents from a month ago and 16 cents from a week ago. The decline in diesel prices has been relatively smaller, with only a decrease of about 10 cents over the past month, although it is still about $2.44 per gallon higher than it was a year ago. However, diesel prices have already fallen from their historical high set on September 22. Typically, gasoline prices tend to decrease during the autumn and winter seasons in the United States because the market switches to cheaper "winter blend" gasoline, and there is also a general reduction in the frequency of driving by Americans. At the same time, the maintenance season for refineries is coming to an end, which means that refining capacity and production will increase, and thus so will market supply.