As of 09:12 EDT

Portland, ME weather in August

74°

Portland, Sunday, 9 August, 09:12

Clear. Feels like 76°. High 92°, low 68°.

Pressure29.88 inHg

Wind2 mph SW

Humidity89%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In August, Portland, ME averages a high of 74.5° and a low of 63.2°. About 3.4 inches of precipitation fall over the month (10 wet days). The record high is 93.6° (2025) and the record low 48° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	75.7°	64.2°	42%	91° (1975)	56.5° (1964)
2	76.5°	64.9°	27%	93.4° (1975)	57° (1992)
3	76.6°	65.3°	33%	89.2° (2020)	55.9° (1964)
4	76.1°	65.7°	37%	86.4° (2022)	56.1° (1964)
5	75.6°	65.1°	32%	86° (2024)	54° (1972)
6	75°	63.9°	35%	89.1° (2018)	57.7° (1972)
7	74.8°	63.9°	35%	93.4° (2022)	56.8° (1964)
8	75.9°	64.4°	38%	91.4° (2022)	58.5° (2024)
9	75.7°	64.6°	32%	92.1° (2022)	55.8° (1964)
10	75.4°	64.6°	38%	86.5° (2001)	54.3° (1964)
11	74.8°	63.7°	37%	91.8° (2025)	53.2° (1972)
12	74.1°	63.7°	33%	93.6° (2025)	55.9° (1979)
13	74.3°	63.5°	30%	90° (2025)	54.7° (1979)
14	76.1°	63.9°	28%	88° (2021)	54° (1964)
15	74.1°	63.7°	35%	84.6° (1985)	53.8° (1964)
16	75°	63.5°	27%	85.1° (1987)	54.7° (1964)
17	75.7°	64°	27%	87.3° (2025)	55.6° (1979)
18	74.5°	63.7°	37%	88° (1987)	53.2° (1968)
19	73.8°	62.4°	30%	84.6° (2022)	55° (1968)
20	73°	62.2°	27%	86° (1983)	55.4° (2007)
21	73.4°	61.7°	27%	85.6° (2020)	53.6° (2025)
22	73.2°	61.9°	35%	86.2° (1976)	52.3° (1982)
23	73°	61.3°	32%	83.7° (2025)	54.9° (1971)
24	73.2°	61.5°	27%	82.4° (1980)	52.5° (1971)
25	72.7°	61.5°	32%	86.4° (2020)	53.1° (1989)
26	73.9°	61.9°	17%	86.2° (2021)	54° (2019)
27	74.3°	62.4°	27%	84° (1983)	51.8° (2019)
28	73.2°	62.1°	28%	90° (2018)	53.6° (2025)
29	72.1°	61.5°	28%	86.2° (2010)	48.7° (1982)
30	73.2°	61°	27%	85.8° (2010)	48° (1965)
31	72.9°	60.8°	22%	88.7° (2010)	48.2° (1965)