Weather Forecast for Portland
Maine, United States of America
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Current Weather - Portland: 7°C
Current Weather - Portland: 7°C
Maine, United States of America
Clear
Feels like 5°C
Wind
10 km/h NW
Humidity
82%
Pressure
1016 mb
UV Index
0
Visibility
10 km
Patchy rain nearby
Sunday, May 31, 2026
High
17°C
Low
6°C
Rain Chance
92%
Hourly Forecast
13°C
13°C
15°C
14°C
13°C
12°C
12°C
12°C
12°C
12°C
11°C
11°C
10°C
10°C
10°C
Day Statistics
Maximum Wind
10 km/h
Humidity
80%
Precipitation
2 mm
UV Index
6
Visibility
9 km
Rain Chance
92%
Snow Chance
0%
Sun & Moon
Sunrise
05:02 AM
Sunset
08:14 PM
Moonrise
09:26 PM
Moonset
04:50 AM
Moon Phase
Full Moon
Moon Illumination
99%
Air Quality
PM2.5
4.8
μg/m³
PM10
5.8
μg/m³
NO₂
4.9
μg/m³
O₃
65.4
μg/m³
SO₂
1.4
μg/m³
CO
113.7
μg/m³
Weather Alerts
Frost Advisory issued May 30 at 2:10PM EDT until May 31 at 7:00AM EDT by NWS Gray ME
* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In Maine, Central Somerset, Interior Cumberland Highlands, Northern Franklin, Northern Oxford, and Southern Oxford Counties. In New Hampshire, Northern Carroll, Northern Coos, Northern Grafton, and Southern Coos Counties. * WHEN...From 10 PM this evening to 7 AM EDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Frost Advisory issued May 30 at 8:02PM EDT until May 31 at 7:00AM EDT by NWS Gray ME
* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In Maine, Central Somerset, Interior Cumberland Highlands, Northern Franklin, Northern Oxford, and Southern Oxford Counties. In New Hampshire, Northern Carroll, Northern Coos, Northern Grafton, and Southern Coos Counties. * WHEN...Until 7 AM EDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Frost Advisory issued May 31 at 1:12AM EDT until May 31 at 7:00AM EDT by NWS Gray ME
* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In Maine, Central Somerset, Interior Cumberland Highlands, Northern Franklin, Northern Oxford, and Southern Oxford Counties. In New Hampshire, Northern Carroll, Northern Coos, Northern Grafton, and Southern Coos Counties. * WHEN...Until 7 AM EDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
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