Global food prices hit the highest level in 18-months in October, with unfavorable weather raising production concerns for many commodities and threatening to keep consumer costs higher for longer.

Higher prices for staples such as vegetable oils, wheat, cheese and sugar have pushed food commodity costs to their highest level in 18 months, signalling more pain ahead for grocery shoppers and central banks.

The price index, compiled by the U.N. Food and Agriculture Organization (FAO) to track the most globally traded food commodities, increased to 127.4 points last month from a revised 124.9 points in September.

Food prices rose to their highest level in 18 months in October, with the prices of almost all commodity groups rising, led by vegetable oils, the Food and Agriculture Organization of the United Nations said.