Temperature for March
In Portland, ME during March the average high temperature is 44.0°F. The hottest day on record was March 31, 1998 when the temperature hit 87.8°F.

In Portland, ME during March the average high temperature is 44.0°F. The hottest day on record was March 31, 1998 when the temperature hit 87.8°F.
In March the average monthly rainfall in Portland, ME is 4.09 inches with rain usually falling on between 9 and 10 days. 1981 was the driest March with only 1.01 inches of rain falling, and 2010 was the wettest March with 11.59 inches of rain. The wettest single day in March was 14 March 1977 when 3.19 inches of rain fell.
In March it usually snows on between 7 and 8 days. In March there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in March.