Get the monthly weather forecast for Portland, ME, including daily high/low, historical averages, to help you plan ahead.

June weather in Portland Maine, United States. Daily high temperatures increase by 8°F, from 68°F to 76°F, rarely falling below 57°F or exceeding 85°F.

Portland Weather in June, USA ; Temperature. 17°C ; High Temperature. 23°C ; Low Temperature. 11°C ; Rainfall Days. 14 days ; Rainfall. 110 mm ...

Get the monthly weather forecast for South Portland, ME, including daily high/low, historical averages, to help you plan ahead.

Summers in Portland tend to be cool. The highs range around the mid- to high 70s, while the lows are brisk – hovering in the low to high 50s come nightfall.

Temperature records began November 25, 1940. Portland, ME Daily Records for JUNE. High Temperatures. Record High. Record Cool High. Page 2. Date Record. Year(s).

Daily high temperatures increase by 8°F, from 67°F to 75°F, rarely falling below 56°F or exceeding 85°F.

Rain early. Decreasing clouds overnight. Low 34F. Winds NW at 15 to 25 mph. Chance of rain 100%. Higher wind gusts possible. Record Low6°. Average Low28°.

Portland weather in June 2025. Expect 23°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Portland in June.