Portland, Maine 7-day weather forecast

Written by:
August 11, 2025
ESOlex // Shutterstock

Portland, Maine 7-day weather forecast

Stacker created the forecast for Portland, Maine using data from OpenWeather. This week's high is 91 °F on Sunday, while the low is 60 °F on Saturday. There are expected to be 2 sunny days and rain on 4 days this week.

There are currently no weather alerts.

Monday, August 11

- High of 87 °F, low of 65 °F (48% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:41 AM, sunset at 7:51 PM
1 / 6
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Tuesday, August 12

- High of 86 °F, low of 69 °F (46% humidity)
- Partly cloudy with a 35% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (8 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:42 AM, sunset at 7:49 PM
2 / 6
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Wednesday, August 13

- High of 84 °F, low of 65 °F (48% humidity)
- Partly cloudy with a 100% chance of rain (4 mm of rain)
- Very high risk of harm from sun exposure (7 UV index)
- Moderate breeze (18 mph wind)
- Sunrise at 5:43 AM, sunset at 7:48 PM
3 / 6
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Thursday, August 14

- High of 89 °F, low of 67 °F (53% humidity)
- Sunny with a 97% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:44 AM, sunset at 7:46 PM
4 / 6
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Friday, August 15

- High of 77 °F, low of 61 °F (39% humidity)
- Overcast with a 0% chance of rain
- Gentle breeze (9 mph wind)
- Sunrise at 5:45 AM, sunset at 7:45 PM
5 / 6
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Saturday, August 16

- High of 80 °F, low of 60 °F (47% humidity)
- Sunny with a 0% chance of rain
- Gentle breeze (12 mph wind)
- Sunrise at 5:47 AM, sunset at 7:43 PM
- Last quarter moon
6 / 6
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Sunday, August 17

- High of 91 °F, low of 69 °F (41% humidity)
- Partly sunny with a 100% chance of rain (6 mm of rain)
- Gentle breeze (12 mph wind)
- Sunrise at 5:48 AM, sunset at 7:42 PM

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