Portland, Maine 7-day weather forecast

Written by:
June 8, 2026
ESOlex // Shutterstock

Portland, Maine 7-day weather forecast

Stacker created the forecast for Portland, Maine using data from OpenWeather. This week's high is 78 °F on Monday, while the low is 55 °F on Friday. There are expected to be 4 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, July 20

- High of 78 °F, low of 59 °F (36% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 5:17 AM, sunset at 8:16 PM
1 / 6
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Tuesday, July 21

- High of 72 °F, low of 61 °F (58% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 5:18 AM, sunset at 8:15 PM
- First quarter moon
2 / 6
Cari Rubin Photography // Shutterstock

Wednesday, July 22

- High of 78 °F, low of 64 °F (64% humidity)
- Overcast with a 100% chance of rain (9 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 5:19 AM, sunset at 8:15 PM
3 / 6
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Thursday, July 23

- High of 77 °F, low of 59 °F (43% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 5:20 AM, sunset at 8:14 PM
4 / 6
Piyawat Nandeenopparit // Shutterstock

Friday, July 24

- High of 74 °F, low of 55 °F (45% humidity)
- Sunny with a 0% chance of rain
- Gentle breeze (10 mph wind)
- Sunrise at 5:21 AM, sunset at 8:13 PM
5 / 6
Saijai Boonmak // Shutterstock

Saturday, July 25

- High of 76 °F, low of 58 °F (49% humidity)
- Partly sunny with a 0% chance of rain
- Gentle breeze (8 mph wind)
- Sunrise at 5:22 AM, sunset at 8:12 PM
6 / 6
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Sunday, July 26

- High of 77 °F, low of 61 °F (50% humidity)
- Sunny with a 0% chance of rain
- Moderate breeze (14 mph wind)
- Sunrise at 5:23 AM, sunset at 8:11 PM

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