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
You may also like:
Highest-rated restaurants for tacos in the Portland, Maine area by diners
1 / 6
Jurga Jot // Shutterstock
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
- 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
- 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
cooperr // Shutterstock
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
- 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
- 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
- Partly sunny with a 0% chance of rain
- Gentle breeze (8 mph wind)
- Sunrise at 5:22 AM, sunset at 8:12 PM
You may also like:
How much does it cost to buy a house in Portland, Maine in 2026?
6 / 6
supergenijalac // Shutterstock
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
- Sunny with a 0% chance of rain
- Moderate breeze (14 mph wind)
- Sunrise at 5:23 AM, sunset at 8:11 PM