Temperature for July
In Portland, ME during July the average high temperature is 80.8°F. The hottest day on record was July 23, 2011 when the temperature hit 100.0°F.

In Portland, ME during July the average high temperature is 80.8°F. The hottest day on record was July 23, 2011 when the temperature hit 100.0°F.
In July the average monthly rainfall in Portland, ME is 4.46 inches with rain usually falling on between 12 and 13 days. 2003 was the driest July with only 1.57 inches of rain falling, and 1992 was the wettest July with 30.86 inches of rain. The wettest single day in July was 20 July 1992 when 5.98 inches of rain fell.
There are thunderstorms on between 3 and 4 days in July.