The Bureau of Meteorology says the region experienced warmer than average temperatures and well below average rainfall last month.
According to the statistics, Merriwa recorded just six millimetres of rain - 12 per cent of the average rainfall for October.
Around 17 mills fell in Cessnock - 68 per cent below average.
Meteorologist John James says Nelson Bay was the only area in the region to record above average rainfall.
"Nelson Bay had just over the average - 83 millimetres compared to the average of 78.
"Nelson Bay was the only one above average and that was only just as a result of thunderstorms."
The Hunter also had warmer than average temperatures for October.
Mr James says three towns in the region recorded the highest average October daily temperature on record.
"Williamtown had 27.3 (degrees) for this year, previously it was 27.1," he said.
"Cessnock was 28.6, previously it was 28.4.
"Scone was 28.8, previously it was 28.3.
"So overall the record highest mean daily temperatures."
© ABC 2013
13:52 EDT A strong cold front has pummeled Tasmania, bringing gusty winds and heavy rain.