Portland, Maine 7-day weather forecast

Written by:
March 23, 2026
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Portland, Maine 7-day weather forecast

created the forecast for Portland, Maine using data from . This week's high is 78 掳F on Wednesday, while the low is 39 掳F on Sunday. There is expected to be 1 sunny day and rain on 5 days this week.

There are currently no weather alerts.

Monday, May 25

- High of 66 掳F, low of 50 掳F (98% humidity)
- Overcast with a 100% chance of rain (13 mm of rain)
- High risk of harm from sun exposure (5 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:07 AM, sunset at 8:09 PM
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1 / 6
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Tuesday, May 26

- High of 75 掳F, low of 53 掳F (50% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 5:06 AM, sunset at 8:10 PM
2 / 6
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Wednesday, May 27

- High of 78 掳F, low of 61 掳F (48% humidity)
- Mostly cloudy with a 95% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (7 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:05 AM, sunset at 8:11 PM
3 / 6
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Thursday, May 28

- High of 62 掳F, low of 50 掳F (74% humidity)
- Overcast with a 100% chance of rain (9 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:04 AM, sunset at 8:12 PM
4 / 6
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Friday, May 29

- High of 54 掳F, low of 46 掳F (64% humidity)
- Overcast with a 0% chance of rain
- Gentle breeze (10 mph wind)
- Sunrise at 5:04 AM, sunset at 8:12 PM
5 / 6
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Saturday, May 30

- High of 48 掳F, low of 45 掳F (95% humidity)
- Overcast with a 100% chance of rain (37 mm of rain)
- Fresh breeze (19 mph wind)
- Sunrise at 5:03 AM, sunset at 8:13 PM
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6 / 6
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Sunday, May 31

- High of 60 掳F, low of 39 掳F (95% humidity)
- Overcast with a 100% chance of rain (30 mm of rain)
- Moderate breeze (17 mph wind)
- Sunrise at 5:03 AM, sunset at 8:14 PM
- Full moon

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