Temperature for October
In Portland, ME during October the average high temperature is 60.4°F. The hottest day on record was October 1, 1986 when the temperature hit 84.9°F.
Precipitation for October
In October the average monthly rainfall in Portland, ME is 4.98 inches with rain usually falling on between 11 and 12 days. 1994 was the driest October with only 1.04 inches of rain falling, and 1996 was the wettest October with 14.82 inches of rain. The wettest single day in October was 22 October 1996 when 8.11 inches of rain fell.
In October it usually snows on between 0 and 1 days. In October there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in October.